Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Phenacoccus longoi Russo (Hemiptera: Coccoidea: Pseudococcidae) newly recorded from fir forests in Greece.

Abstract

Scale insects were collected between 2006 and 2011 on Abies cephalonica in two locations: Kefallonia Island and Mainalo Mountain in the Central Peloponnesus. Approximately 10 wood cuttings, each 30-40 cm long, of 5 trees of similar age and growth, were collected once a month from each of the investigation areas. Four scale insect species were found, one of which, Phenacoccus longoi, is a new record for the fauna of Greece. P. longoi completes one generation per year. The female settles under the dry cork layer of the bark. Its body is covered with white waxy filaments and produces small drops of honeydew in all the nymphal stages and the adult. The adult females appear on the trees in early May, searching for a place to oviposit, which commences 10-15 days later. P. longoi females lay 82-135 eggs (mean 98, n=80), under the body. The adult females produce protective waxy filaments and cover the eggs. The oviposition period lasts ∼20 days. The crawlers appear 20-25 days later, disperse to younger branches and feed until late June and July. The 1st instar nymphs undergo a moult in late August and then overwinter as a 2nd instar nymph.