apterous

It is possible to create (or perhaps order) winged, red-eyed flies, and apterous, sepia-eyed flies.

At the time of the bioassays, 14 apterous adult female aphids [fasted for 1 hr) per genotype were transferred from the insect stock colony and allowed to feed.

A fairly similar distribution exists in the Tabariini, a small group of three currently monospecific genera of apterous and very long-legged katydids of spider-like appearance, the only South American representatives of the otherwise Old World subfamily Mecopodinae.

padi treatment was established by placing 25 nonviruliferous apterous R.

Mobility of apterous grain aphids Sitobion avenae within wheat fields.

ramosa by nymphs and adult apterous females of a secondary-host generation of S.

Among these 3885 were alate and 51010 were apterous. Out of total collected specimens three species were identified as Sitobion avenae, Schizaphis graminum, Rhopalosiphum padi.

The no-choice test involved four replicates of single plants of each genotype at the two-leaf stage, covered with clear plastic cylinder cages, and infested with five apterous adults of GBI or the isolate from Haskell County.

The production of the apterous and elate forms in the aphid, Megoura viciae Buckton, with special reference to the role of crowding.

persicae in assays using apterous aphids and leaf discs embedded in agar.

They are all apterous insects, usually bark-colored, with a concave thoracic sternum that enables them to fit snugly onto the twigs of forest trees and bushes.

Observation on the life stage of Cinara species indicates that both winged and wingless female (apterous and allate) are present during the growing season (April-September) and nymphs are produced by parthenogenesis.

However, females are not a problem, because they are apterous or micropterous in Embolemus and macropterous in Ampulicomorpha.

For the time course study, adult, apterous RWA from greenhouse colonies reared on 'Wintermalt' barley (Webster et al., 1993) were used.

The first-generation females and the oviparae are always apterous, but crowding may induce the production of winged individuals in any other generation (Gange 1985).