Crocidosema plebejana (cotton tipworm)
Index
- Pictures
- Identity
- Summary of Invasiveness
- Taxonomic Tree
- Notes on Taxonomy and Nomenclature
- Description
- Distribution
- Distribution Table
- History of Introduction and Spread
- Risk of Introduction
- Hosts/Species Affected
- Host Plants and Other Plants Affected
- Growth Stages
- Symptoms
- List of Symptoms/Signs
- Biology and Ecology
- Natural enemies
- Means of Movement and Dispersal
- Pathway Vectors
- Plant Trade
- Wood Packaging
- Impact Summary
- Detection and Inspection
- Similarities to Other Species/Conditions
- Prevention and Control
- References
- Links to Websites
- Distribution Maps
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Top of pageIdentity
Top of pagePreferred Scientific Name
- Crocidosema plebejana Zeller, 1847
Preferred Common Name
- cotton tipworm
Other Scientific Names
- Crocidosema plebeiana Zeller
- Crocidosema ptiladelpha Meyrick, 1917
- Crocidosema synneurota Meyrick, 1926
- Crocidosema? insulana Aurivililus, 1922
- Eucosma plebeiana Zeller
- Grapholitha peregrinana Moeschler, 1866
- Paedisca lavaterana Milliere, 1863
- Penthina altheana Mann, 1855
- Proteopteryx blackburnii Butler, 1881
- Steganoptycha obscura Wollaston, 1879
International Common Names
- English: cotton tip borer; hollyhock moth
- Spanish: barrenador del brote y boton
EPPO code
- CRODPL (Crocidosema plebejana)
Summary of Invasiveness
Top of pageIn California, USA, C. plebejana was first detected in 1911 at San Diego (32.5°N latitude), and it was widely recorded in southern California (33 to 34°) during the following 30 years. The species extended its range northward along the coast to San Luis Obispo, California, USA (35°) by 1959 and into the San Joaquin Valley California, USA, in 1968 (35°) (Powell, 1992). An association with commercial cotton in California was not known for 50 years after its first record (Okumura, 1961), but the larvae have been taken on cotton several times since (Powell, 1992). C. plebejana appeared in Berkeley, USA (37.5°N latitude) in 1988 and has been an urban resident since then, evidently dependent upon hollyhock (Alcea rosea) and cheeseweed (Malva parviflora) (Powell, 1992).
In these instances, the delayed geographical and ecological expansion by introduced populations may have involved genetic adaptation to environmental conditions, to which the founders or even the source populations were not adapted. However, the effects of global warming enabling northward expansion may be playing a role.
Taxonomic Tree
Top of page- Domain: Eukaryota
- Kingdom: Metazoa
- Phylum: Arthropoda
- Subphylum: Uniramia
- Class: Insecta
- Order: Lepidoptera
- Family: Tortricidae
- Genus: Crocidosema
- Species: Crocidosema plebejana
Notes on Taxonomy and Nomenclature
Top of pageMeyrick (1911) treated Crocidosema as a subjective synonym of Eucosma Hübner, primarily because the separation of Crocidosema was based on male secondary characters, with genitalia features not yet employed by tortricid taxonomists. That combination was used for several years (e.g. Walsingham, 1914) until Heinrich (1921, 1923) reversed the decision based on genitalic characters.
There are several species names that are or have been considered to be synonyms, not surprising because the species had been widely transported around the world by the mid-nineteenth century, and so was newly 'discovered' in many countries during the same era.
Proteopteryx blackburnii was treated as a subjective synonym of C. plebejana by Walsingham (1907) and most later authors, but that decision was contradicted by Zimmerman (1978), who considered blackburnii, along with two other Hawaiian species described by Walsingham (Crocidosema leprara and Crocidosema marcidella), as distinct sibling species. After studying Pacific Island populations, Clarke (1971, 1986) regarded variation in the complex as intraspecific and returned blackburnii to synonymy. If the interpretation by Zimmerman is correct, by inference there may be many sibling species of Crocidosema currently regarded as the one species plebejana, scattered through the Pacific Islands and Indo-Australian region. Certainly it is unlikely that C. plebejana has reached such remote outposts as Rapa and the Marquesas Islands (northeast of Tahiti), but not Hawaii. It is possible that adventive populations in North America, the Mediterranean region, and Africa are members of two or more lineages. The complex begs for an analysis on the basis of DNA sequencing.
Description
Top of pageThe moths are small, and the forewing length is approximately 5.3 to 8.5 mm, averaging slightly larger in the females. There is sexual dimorphism in forewing colour pattern and male secondary structures.
Male
The forewing (FW) has a short costal fold at the base, bearing upright scaling exteriorly. The FW is predominantly dark-grey or brownish-grey with a pale transverse band curving outward from the basal third of the costa to the mid-dorsal margin, expanding along on the dorsal half to encompass a poorly defined ocellar spot above the tornus. The band is variably obscured by grey-brown on the costal half and distally from a sharply defined inner margin on the dorsal half. A well-defined brown, often triangular spot precedes the ocellar spot, which is dull-whitish with two usually well-defined, thin and dark longitudinal lines, preceded and followed by patches of shining silvery-grey.
The hindwing (HW) has a large tuft of upright, dark-brown scales at the base of the Cu vein; scale colouring sparse, brownish, and concentrated along the veins and distal half of the wing.
The abdomen is dark grey-brown dorsally, and paler grey-brown ventrally, with cream-white anal tufts. The genitalia are illustrated by Heinrich (1921, 1923), Bradley et al. (1979), and Clarke (1986).
Female
The FW averages 0.1 to 0.8 mm longer than the male FW, and lacks a costal fold. The ground colour is predominantly tan, especially the costal half, blending to a dark-brown dorsal area, interrupted by a rectangular, grey spot on the dorsal margin corresponding to a dorsal, white portion of the transverse pattern in the male.
The ocellar spot is similar to the male, but usually with four discernible longitudinal dark marks. The genitalia were figured by Heinrich (1931), Clarke (1976, 1986), and Bradley et al. (1979), who also illustrate male specimens in colour.
Egg
Bishop and Blood (1978) described the superficial appearance of C. plebejana eggs. On seedling cotton they are deposited on the upper and lower surfaces of the leaves, typically close against the veins, fitted into the gap on the vein-leaf surface interface. At oviposition they are roughly oval, and translucent white, showing the ribbing of the chorion typical of tortricids. By the third day, irregular reddish-brown patches develop, and eventually form a ring shape. On the fourth day, the dark head capsule becomes visible preceding hatching. Thus the egg resembles that of Epinotia, a closely related genus, pliable on the substrate and white when first deposited, with a pink ring appearing within 48 hours (Opler, 1974).
Larva
The early instars are whitish or grey, with a dark head capsule and thoracic shield. The late-instar larvae are approximately 8 to 12 mm long (when preserved), and the body is whitish to grey, tan, or yellowish, and often tinged with pink (Swezey, 1915; Heinrich, 1921; Bishop and Blood, 1978), or it is dark reddish-brown (Bradley et al., 1979).
The final instar has a 0.7 to 0.9 mm wide head capsule. It is yellow-brown with black ocellar (stemmatal) and postgenal areas. The thoracic shield is yellowish, and the rest of the integument is unpigmented, including the pinacula setae. The spinulae are darker than the integument; they are short and dark, and their bases are enlarged and of integumental colour, giving a pebbly appearance. The anal fork (anal comb) is moderately well developed, with five tines (MacKay, 1959). Detailed maps of the setal arrangements are illustrated by Heinrich (1921) and MacKay, based on specimens from Florida and Texas, USA (reprinted by Zimmerman, 1978).
Pupa
Typical tortricoid form with moderately strong segmental rows of caudally-directed abdominal spines; weak cremaster spurs and hooked setae; dark-brown. Illustrated by Heinrich (1921) (reprinted by Zimmerman, 1978).
Distribution
Top of pageDistribution Table
Top of pageThe distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.
Last updated: 12 May 2022Continent/Country/Region | Distribution | Last Reported | Origin | First Reported | Invasive | Reference | Notes |
---|---|---|---|---|---|---|---|
Africa |
|||||||
Benin | Present | ||||||
Congo, Democratic Republic of the | Present | Introduced | Original citation: Meyrick (1938) | ||||
Egypt | Present | Introduced | |||||
Kenya | Present | Introduced | Original citation: Meyrick (1920) | ||||
Saint Helena | Present | Present based on regional distribution. | |||||
-Ascension | Present | Introduced | Original citation: Fletcher (1932) | ||||
São Tomé and Príncipe | Present | Introduced | Original citation: Meyrick (1934) | ||||
Seychelles | Present | Introduced | Original citation: Fletcher (1932) | ||||
South Africa | Present | Introduced | Original citation: Pinhey (1975) | ||||
Sudan | Present | Introduced | |||||
Uganda | Present | Introduced | Original citation: Bradley (1965) | ||||
Zimbabwe | Present | Introduced | Original citation: Pinhey (1975) | ||||
Asia |
|||||||
Cambodia | Present | Introduced | Original citation: Fletcher (1932) | ||||
India | Present | Introduced | Original citation: Fletcher (1932) | ||||
Iran | Present | ||||||
Japan | Present | Present based on regional distribution. | |||||
-Ryukyu Islands | Present | Introduced | Original citation: Nasu and Yasuda (1993) | ||||
-Shikoku | Present | Introduced | Original citation: Kawabe and Kusui (1978) | ||||
Philippines | Present | Introduced | Original citation: Diakonoff (1967) | ||||
Sri Lanka | Present | Introduced | Original citation: Diakonoff (1982) | ||||
Syria | Present | Introduced | Original citation: Fletcher (1932) | ||||
Taiwan | Present | Introduced | Original citation: Fletcher (1932) | ||||
Turkey | Present | ||||||
United Arab Emirates | Present | Introduced | Original citation: Ezzet and Nazmi (1971) | ||||
Europe |
|||||||
Austria | Present | Introduced | Original citation: Spuler (1913) | ||||
Croatia | Present | ||||||
Cyprus | Present | ||||||
Federal Republic of Yugoslavia | Present | Introduced | Original citation: Spuler (1913) | ||||
France | Present | Introduced | |||||
Germany | Present | Introduced | Original citation: Spuler (1913) | ||||
Ireland | Present | Introduced | Original citation: Huggins (1966) | ||||
Italy | Present | Introduced | 1847 | ||||
Netherlands | Present | ||||||
Poland | Present | ||||||
Portugal | Present | Present based on regional distribution. | |||||
-Madeira | Present | Introduced | Original citation: Fletcher (1932) | ||||
Russia | Present | ||||||
Spain | Present | Introduced | Original citation: Spuler (1913) | ||||
-Canary Islands | Present | Introduced | Original citation: Walsingham, 1908 | ||||
United Kingdom | Present | Introduced | 1900 | Invasive | Original citation: Bradley and et al. (1979) | ||
North America |
|||||||
Barbados | Present | ||||||
Bermuda | Present | Introduced | 1980 | Original citation: Ferguson and et al. (1991) | |||
British Virgin Islands | Present | Introduced | Original citation: Walsingham, 1897 | ||||
Costa Rica | Present | Introduced | Original citation: INBio, 1996 | ||||
Cuba | Present | Introduced | Original citation: Essig Museum of Entomology, 1966 | ||||
Dominican Republic | Present | ||||||
Grenada | Present | Introduced | Original citation: Walsingham, 1897 | ||||
Mexico | Present | Introduced | Original citation: Walsingham, 1914 | ||||
Puerto Rico | Present | Introduced | |||||
Saint Vincent and the Grenadines | Present | Introduced | Original citation: Walsingham, 1897 | ||||
United States | Present, Localized | ||||||
-California | Present | Introduced | 1911 | ||||
-Florida | Present | Introduced | 1918 | Original citation: Kimball (1965) | |||
-Louisiana | Present | Introduced | 1916 | Original citation: Powell (1992) | |||
-New Mexico | Present | Introduced | Original citation: Essig Museum of Entomology, 1979 | ||||
-North Carolina | Present | Introduced | Original citation: Ferguson and et al. (1991) | ||||
-South Carolina | Present | Introduced | 1944 | Original citation: Powell (1992) | |||
-Texas | Present | Introduced | Original citation: Heinrich (1921) | ||||
Oceania |
|||||||
Australia | Present | Introduced | |||||
-New South Wales | Present | Introduced | Original citation: Meyrick (1911) | ||||
-Queensland | Present | Introduced | Original citation: Meyrick (1911) | ||||
-South Australia | Present | ||||||
-Victoria | Present | Introduced | Original citation: Meyrick (1911) | ||||
-Western Australia | Present | Introduced | Original citation: Meyrick (1911) | ||||
Fiji | Present | Original citation: Dugdale (1977) | |||||
French Polynesia | Present | Introduced | Original citation: Meyrick (1929) | ||||
-Marquesas Islands | Present | Introduced | |||||
New Zealand | Present | Introduced | Original citation: Hudson (1928) | ||||
Northern Mariana Islands | Present | Introduced | Original citation: Clarke (1976) | ||||
Pitcairn | Present | Introduced | |||||
Samoa | Present | Introduced | Original citation: Meyrick (1927) | ||||
Solomon Islands | Present | Introduced | Original citation: Bradley (1961) | ||||
Tonga | Present | Original citation: Buxton and Hopkins (1927) | |||||
Vanuatu | Present | Original citation: Buxton and Hopkins (1927) | |||||
South America |
|||||||
Argentina | Present | Original citation: Fletcher (1932) | |||||
Brazil | Present | Present based on regional distribution. | |||||
-Amazonas | Present | Original citation: Meyrick (1930) | |||||
-Rio Grande do Sul | Present | Original citation: Biezanko (1961) | |||||
Chile | Present | Native | Original citation: Clarke (1971) | ||||
Ecuador | Present | Original citation: Meyrick (1917) | |||||
-Galapagos Islands | Present | Original citation: Meyrick (1926) | |||||
Peru | Present | Original citation: Meyrick (1917) |
History of Introduction and Spread
Top of pageRisk of Introduction
Top of pageHosts/Species Affected
Top of pageA major factor in the adventive success of C. plebejana has been its ability to adopt diverse larval food plants, primarily Malvaceae, but evidently some unrelated plants as well. C. plebejana feeds on many native species in the places it colonizes. For example, Heinrich (1921) and Bottimer (1926) recorded seven native and two weed species of Malvaceae in Texas, USA, in addition to one Sterculiaceae. A number of plant species have been recorded as hosts of C. plebejana larvae in the field in various geographical locations (see Mann, 1855; Milliere, 1863; Spuler, 1913; Walsingham, 1914; Heinrich, 1921; Bottimer, 1926; Fletcher, 1932; Bishop and Blood, 1978; Clarke, 1986; Common, 1990; Ferguson et al., 1991; Powell, 1992; Hamilton and Zalucki, 1993a; Nasu and Yasuda, 1993; Heppner, 2004). Incidental or doubtful host plants are recorded in Heinrich (1923), Bottimer (1926), Fletcher (1932), Clarke (1986), Common (1990), and Heppner (2004).
Detailed information on host use among the non-malvaceous plants is not available: for example, whether they represent single occurrences; whether populations having undergone unusual host switches; or further information on individual larvae occasionally being found on weedy hosts growing near malvaceous hosts. Some of these records may be based on misidentified larvae.
Host Plants and Other Plants Affected
Top of pageSymptoms
Top of pageAffected plant parts vary with host species and season. Typically the larvae feed in seed capsules on immature seeds, but occasionally in flowers on the pollen (Heinrich, 1921), undeveloped flower buds (Fletcher, 1921), or leaves (Fletcher, 1932). They cause severe damage to cotton seedlings in Australia, burrowing into the shoots (Bishop and Blood, 1978; Hamilton and Gage, 1986), but they do not feed on larger squares (flower buds), flowers, or small to medium sized bolls (Hamilton and Zalucki, 1993a, b). Usually the larvae are found singly in seed capsules, except in okra (Hibiscus esculentus), in which several specimens occurred in one pod, whereas on Sida spp. and other plants with quite small seed pods, the larvae often feed in a tied shelter of terminal leaves and immature seed capsules (Bottimer, 1926). On Lavatera arborea [Malva dendromorpha] in Europe, a larva moves from one capsule to another, boring a hole through the side of the capsule (Bradley et al., 1979). Pupation occurs in the larval gallery or shelter, or within a leaf roll (Bottimer, 1926). Among non-malvaceous plants, the larvae have been found webbing the terminal leaves of Atriplex spp. and sometimes damage the ears of wheat in Australia (Common, 1990).
List of Symptoms/Signs
Top of pageSign | Life Stages | Type |
---|---|---|
Fruit / abnormal shape | ||
Fruit / external feeding | ||
Fruit / frass visible | ||
Fruit / gummosis | ||
Fruit / internal feeding | ||
Fruit / obvious exit hole | ||
Fruit / premature drop | ||
Fruit / reduced size | ||
Fruit / webbing | ||
Growing point / dead heart | ||
Growing point / dieback | ||
Growing point / distortion | ||
Growing point / dwarfing; stunting | ||
Growing point / external feeding | ||
Growing point / frass visible | ||
Growing point / internal feeding; boring | ||
Growing point / wilt | ||
Inflorescence / dwarfing; stunting | ||
Inflorescence / external feeding | ||
Inflorescence / frass visible | ||
Inflorescence / twisting and distortion | ||
Inflorescence / webbing | ||
Leaves / external feeding | ||
Leaves / frass visible | ||
Leaves / leaves rolled or folded | ||
Leaves / webbing | ||
Seeds / empty grains | ||
Seeds / external feeding | ||
Seeds / frass visible | ||
Seeds / internal feeding | ||
Seeds / webbing | ||
Stems / dieback | ||
Stems / distortion | ||
Stems / internal feeding | ||
Stems / visible frass | ||
Stems / webbing | ||
Stems / witches broom |
Biology and Ecology
Top of pageNo available information.
Phenology and Reproductive Biology
The biology and ecology of C. plebejana have been studied in Australia, where it is a minor to occasionally serious pest of seedling cotton in southern Queensland and New South Wales (Bishop and Blood, 1978; Hamilton and Gage, 1986; Hamilton and Zalucki, 1991, 1993a, b). However, there seems to have been no detailed study of the life cycle independent of the cotton-growing season or in other regions.
This species primarily occurs in semi-arid tropical and subtropical regions, but has adapted to a wide range of environments in adventive situations worldwide. The adults are active at various times of the year, and there is no mention of diapause in the literature. In southern California, USA, where C. plebejana has been resident for nearly a century, there are collection records from throughout the year. In coastal central California from 1990 to 1998, there were sporadic records from December to June, and C. plebejana flew more or less continuously from July to November, with no indication of discrete generations (J Powell, University of California, Berkeley, USA, personal communication, 2004, on the basis of data collected in 1992). The larvae are probably active as long as temperature conditions are favourable and the host plants remain available.
When reared in the laboratory at 25°C, egg and larval development was very rapid compared to other Tortricidae and most Lepidoptera, requiring just 3.5 to 4 days incubation and 14 days for larval growth (Bishop and Blood, 1978), whereas pupal development was about average for tortricids (10.7 days).
Hamilton and Zalucki (1991) reared the tipworm at various temperatures from 14 to 34°C and obtained even faster growth rates at higher temperatures, averaging 2.8 to 2.5 days incubation and 12.6 to 10 days for larval growth at 28 to 34°C. However, at the latter temperatures survival was reduced and all eggs laid were infertile. Their results at 25°C were similar to those of Bishop and Blood's; 27 to 28 days development time from egg to adult. A minimum of 10.4 days for larval growth and 18.8 to 19.5 days development from egg to adult at 31°C are the shortest periods seen by the author of this datasheet for any lepidopteran (J Powell, University of California, Berkeley, USA, personal communication, 2004). Hence, it would be possible for 10 or 12 generations to be completed annually under optimum conditions, but probably no more than three to five generations are realized in most temperate and subtropical regions. In Queensland, Hamilton and Zalucki (1991) suggest that three to five generations are possible on cotton (Gossypium spp.) annually, but only one occurs.
Environmental requirements: C. plebejana was first discovered in Sicily, Italy, but it may already have been transported widely in subtropical regions with malvaceous plants, including cotton and okra (Abelmoschus esculentus). There are 22 other described species of Crocidosema in South America, Panama, and Costa Rica, and the Caribbean islands (Powell et al., 1995). Thus C. plebejana may have been native to the neotropics, perhaps lowland situations in more arid regions, such as the west coast of South America. It has adapted to diverse climatic situations, including innumerable Pacific islands. Closely related species or differing populations of C. plebejana may have been native on the Juan Fernandez Islands off the coast of Chile, the South Pacific islands, and the Hawaiian Islands, or there has been appreciable differentiation of island populations in relatively recent times (Clarke 1971, 1986; Zimmerman, 1978).
There is evidence that the successful colonization of cotton is dependent or at least enhanced by alternate use of weeds such as Anoda cristata (Bishop and Blood, 1978) and Malva parviflora (Hamilton and Zalucki, 1993a, b), which may develop inflorescences throughout the year, particularly in irrigated lands. Alternatively, Crocidosema spp. larvae can build up on Malva spp. then cause damage to cotton after the weed senesces (Hamilton and Zalucki, 1991). Cotton is not a preferred host because changes in chemical composition following flowering deter feeding (Hamilton and Zalucki, 1993a). Diapause is not known in C. plebejana and therefore populations probably cannot survive on cotton alone.
Natural enemies
Top of pageNatural enemy | Type | Life stages | Specificity | References | Biological control in | Biological control on |
---|---|---|---|---|---|---|
Trichogramma | Parasite | Eggs |
Means of Movement and Dispersal
Top of pagePlant Trade
Top of pagePlant parts liable to carry the pest in trade/transport | Pest stages | Borne internally | Borne externally | Visibility of pest or symptoms |
---|---|---|---|---|
Flowers/Inflorescences/Cones/Calyx | arthropods/larvae | Yes | Yes | Pest or symptoms usually visible to the naked eye |
Fruits (inc. pods) | arthropods/larvae | Yes | Yes | Pest or symptoms usually visible to the naked eye |
Leaves | arthropods/larvae | Yes | Pest or symptoms usually visible to the naked eye | |
Seedlings/Micropropagated plants | arthropods/larvae | Yes | Yes | Pest or symptoms usually visible to the naked eye |
Stems (above ground)/Shoots/Trunks/Branches | arthropods/larvae | Yes | Yes | Pest or symptoms usually visible to the naked eye |
Plant parts not known to carry the pest in trade/transport |
---|
Bark |
Bulbs/Tubers/Corms/Rhizomes |
Growing medium accompanying plants |
Roots |
Wood |
Wood Packaging
Top of pageWood Packaging not known to carry the pest in trade/transport |
---|
Loose wood packing material |
Non-wood |
Processed or treated wood |
Solid wood packing material with bark |
Solid wood packing material without bark |
Impact Summary
Top of pageCategory | Impact |
---|---|
Animal/plant collections | None |
Animal/plant products | None |
Biodiversity (generally) | None |
Crop production | Negative |
Environment (generally) | None |
Fisheries / aquaculture | None |
Forestry production | None |
Human health | None |
Livestock production | None |
Native fauna | None |
Native flora | Negative |
Rare/protected species | None |
Tourism | None |
Trade/international relations | None |
Transport/travel | None |
Detection and Inspection
Top of page- On seedlings: webbed up shelters in terminal leaves; distorted or blackened terminal growth at the meristem; and larval tunnels in the apical stem.
- In flower buds and flowers: webbing and frass amongst the petals and stamens.
- In seed capsules: holes to the exterior; webbing and eaten immature seeds; frass; and possibly some exudation from green fruit.
On plants with tiny seed capsules (e.g. Sida spp.), the leaves may be webbed together with the inflorescences and young seed capsules.
Similarities to Other Species/Conditions
Top of pageSeveral species of other Eucosmini genera are superficially similar, in forewing colour pattern, to either the males or females of C. plebejana. The males resemble several species of Epinotia or Epiblema, but can be readily recognised by the large hindwing scale tufts at the base of the Cu vein. The females are similar to some species of Epinotia, Eucosma, or Phaneta, but can be differentiated by details of the forewing pattern, or it may be necessary to examine the genitalia, especially if specimens are worn.
The larvae probably cannot be reliably distinguished from other similar Eucosmini without detailed comparison to setal patterns, but few other Eucosmini are specialists on Malvaceae and none is known to be pests of cotton (Gossypium spp.) or okra (Abelmoschus esculentus).
Prevention and Control
Top of pageDue to the variable regulations around (de)registration of pesticides, your national list of registered pesticides or relevant authority should be consulted to determine which products are legally allowed for use in your country when considering chemical control. Pesticides should always be used in a lawful manner, consistent with the product's label.
The eggs and newly-hatched larvae are the most susceptible stages to chemical control in the 4 or 5 days before the insect bores into the terminal of the plant (Bishop and Blood, 1978). Once the larvae are inside the stem, insecticides do not provide adequate control. Broad-spectrum insecticides generally have low efficacy and can reduce the natural enemy population, which can result in a resurgence of the pest (Bailey, 2007). A threshold of one or two larvae per metre has been reported for tip damage in cotton (Bailey, 2007).
References
Top of pageAurivillius CVS, 1922. Lepidoptera. In: Skottsberg C, ed. The Natural History of Juan Fernandez and Easter Island, 3:263-270
Bedford HW, 1931. Report on the work carried out at the Khartoum Laboratory during 1929. Review of Applied Entomology, Series A, 19:391-392
Biezanko CM, 1961. XIII Olethreutidae, Tortricidae, Phaloniidae, et Psychidae da zona suesta do Rio Grande do Sul. Ministerio Agric., Inst. Agron. do Sul, Pelotas. Arquivos Entomol., Series A, 15
Bottimer LJ, 1926. Notes on some Lepidoptera from eastern Texas. Journal of Agricultural Research, 33:797-819
Bradley JD, 1961. Microlepidoptera of the Solomon Islands. Bulletin of the British Museum (Natural History), Entomology, 10:121
Bradley JD, 1965. Ruwenzori Expedition 1952. Microlepidoptera. Bulletin of the British Museum (Natural History), Entomology, 12:81-148
Buxton PA, Hopkins G, 1927. Insects of Samoa, Tonga, the Ellice Group, and New Hebrides. Memoirs of the London School of Hygiene and Tropical Medicine, 1:29
Clarke JFG, 1971. The Lepidoptera of Rapa Island. Smithsonian Contributions to Zoology, 56
Common IFB, 1990. Moths of Australia. Leiden, Netherlands: E. J. Brill, v + 535 pp
Diakonoff A, 1967. Microlepidoptera of the Philippine Islands. US National Museum Bulletin No. 257
Dugdale J, 1977. Lepidoptera of Lakeba and Mace Islands, Lau Group, Fiji, with an annotated list of the macrolepidoptera. Bulletin of the Royal Society of New Zealand, 17:63-89
EPPO, 2014. PQR database. Paris, France: European and Mediterranean Plant Protection Organization. http://www.eppo.int/DATABASES/pqr/pqr.htm
Ezzet YM, Nazmi NH, 1971. Survey and classification of leaf roller moths of the United Arab Emirates. Technical Bulletin of the Ministry of Agriculture, United Arab Emirates, 1970
Fletcher TB, 1921. Life histories of Indian insects. Microlepidoptera. Memoirs of the Department of Agriculture, India, Entomology Series 6
Fletcher TB, 1932. Life-histories of Indian Microlepidoptera (second series). Scientific Monographs, Imperial Council of Agricultural Research, 2:1-58
Forbes WTM, 1930. Scientific survey of Porto Rico and the Virgin Islands 12 (1). Insects of Porto Rico and the Virgin Islands. Heterocera or moths (excepting the Noctuidae, Geometridae, and Pyralididae). New York, USA: New York Academy of Science
Hall MR, 1995. Notes and comments on some Suffolk moths in 1994. Suffolk Natural History, 31:3-5
Heinrich C, 1921. Some Lepidoptera likely to be confused with the pink bollworm. Journal of Agricultural Research, 20:807-836
Heinrich C, 1923. Revision of the North American moths of the subfamily Eucosminae of the family Olethreutidae. US Natl. Mus. Bul. 123
Heinrich C, 1931. Notes on and description of some American moths. Proceedings of the United States National Museum, 79:1-16
Heppner JB, 2004. Arthropods of Florida and neighboring land areas. Vol. 17, Lepidoptera of Florida. Part 1. Introduction and catalog. Gainesville, USA: Florida Department of Agriculture, Consumer Services Division Plant Industry
Hudson GV, 1928. The butterflies and moths of New Zealand. Wellington, New Zealand: Ferguson & Osborn, 387-481
Huggins HC, 1966. Notes on the microlepidoptera. Entomologists Record and Journal of Variation, 78:256
Kawabe A, Kusui Y, 1978. Moths of the Ogasawara (Bonin) Islands. Tinea, 10:163-172
Kimball CP, 1965. The Lepidoptera of Florida. An Annotated Checklist. Gainsville, Florida, USA: Florida Department of Agriculture
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Distribution References
CABI, Undated. Compendium record. Wallingford, UK: CABI
CABI, Undated a. CABI Compendium: Status inferred from regional distribution. Wallingford, UK: CABI
CABI, Undated b. CABI Compendium: Status as determined by CABI editor. Wallingford, UK: CABI
Links to Websites
Top of pageWebsite | URL | Comment |
---|---|---|
GISD/IASPMR: Invasive Alien Species Pathway Management Resource and DAISIE European Invasive Alien Species Gateway | https://doi.org/10.5061/dryad.m93f6 | Data source for updated system data added to species habitat list. |
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