Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

On the Biology of the Cerambycidae (Coleopt.).

Abstract

The following is substantially the senior author's summary: This contribution presents the data collected during 24 years on the bionomics of 350 species of Longicorns (133 Cerambycids and 217 Lamiids) occurring in India, Burma and Ceylon. For the dry-wood borer, Stromatium barbatum, F., 311 food-plants are listed; Shorea robusta is the tree attacked by the largest number, 37 species, of Longicorns. An alphabetical list of 568 species of Indian trees, shrubs, woody climbers, etc., with their borers is appended. The food-plants of at least 250 of the species dealt with have not previously been published.
The generalizations drawn from the biological data are discussed in an introductory section under the headings; Oviposition, larval habits, body-form and food-requirements, pupation, life-cycle, emergence-period, imaginal habits and longevity. The range in the length of the life-cycle of various species is from 21/2 months to over 10 years. In temperate climates the life-cycle is annual or longer; in the tropics species with annual cycles are as characteristic as are species with shorter cycles. In the majority of dead-wood borers, a brood normally consists of short-cycle and long-cycle larvae, so that development may be prolonged by multiples of the short period up to two or three years from oviposition. The season in which emergence of the adults occurs is a characteristic of the species; four emergence-periods are recognised, viz., temperate summer, dry or pre-monsoon season, south-west monsoon season, and post-monsoon season. Monsoon emergences are strongly influenced by the initial date, quantity and distribution of monsoon rainfall. Three-dimensional graphs (date, percentage-emergence and rainfall) are given for two species, and two-dimensional graphs for typical examples of other types of emergence. A three-dimensional graph (temperature, humidity and length of life) is given for the imaginal longevity of Hoplocerambyx spinicornis, Newm.
The catalogue of the 350 species is arranged alphabetically by genera and species. Summaries or references to literature are given of the information on previously well-documented species, but for the remainder the bulk of the information is new and is recorded in detail. Much of it should be useful to entomologists in the Malayan region generally.