apterous


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Related to apterous: brachypterous

apterous

[′ap·tə·rəs]
(biology)
Lacking wings, as in certain insects, or winglike expansions, as in certain seeds.
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Small to medium size species (6-5 mm); concolorous or with inconspicuous markings; winged and apterous forms.
Twelve genera of apterous Mezirinae are recorded from the Neotropical Region: Allelocoris, Asterocoris Drake & Harris, 1940; Emydocoris, Notoplocoris Usinger, 1941; Eunotoplocoris Kormilev, 1957; Bergrothiessa, Kormilevia, Mystilocoris and Ormenocoris Usinger & Matsuda, 1959; Pseudopictinus Kormilev, 1966; Limonocoris Kormilev, 1971; and Neormenocoris Heiss, 1999.
1995; Hannunen and Ekbom, 2002), apterous aphids have sometimes been assumed not to be important dispersers (Jepson, 1983; Honek et al.
encelioides are mostly apterous virginoparae with a few alate virginoparae that are found in crowded colonies; no males are observed; this is normal for aphids in the tropical regions where sexual reproduction is lacking and life cyclesare usually holocyclic [2,23,24,25].
Control of neuronal pathway selection by the Drosophila LIM homeodomain gene apterous.
For example, in butterflies, as in fruit flies, the cells that make up the top wing surface contain an activated apterous gene, while those destined to frame the wing perimeter express one called Distal-less.
Subsequently, 140 apterous adult aphids were released (following 1 h starvation) per pot (20 individuals per plant).
Females practically apterous (minute tegminal lobes, hardly visible looking from behind under pronotum).
Fully mature females were apterous (without wings), apodeous (without legs), soft bodied, light green in color, and tapered anteriorly.
Five apterous adult aphids were released on each plant at three weeks after planting.
Andersen (1978) diagnosed Paraphrynoveliidae by the fourth antennal segment being subdivided and the abdominal tergum of the apterous form lacking paired, longitudinal ridges.