Aleimma Hübner
Type species: loeflingiana Linnaeus
The genus is monotypic.
DIAGNOSIS
External characters:
Venation:
venation Aleimma loeflingiana
Forewing: All veins separate; R 5 to termen apically; chorda and median stem atrophied.
Hindwing: All veins separate.
Forewing shape and markings:
Aleimma loeflingiana adults 2
Forewing slightly expanding posteriorly, costa uniformly curved outwards, or a little more arced at base; apex short, pointed; termen oblique, rather straight. Forewing ground colour pale yellow; wing marked with yellowish brown and dark brown (variable).
Sexual dimorphism:
Forewing markings similar in males and females.
Genitalia:
Male:
male genitalia A. loeflingiana
Tegumen short with fairly short pedunculi, delicately concave in middle posteriorly; socius subsquare; tuba analis slender. Valva strong, with costa long, broadening posteriorly; sacculus slender with broad termination coalescent with caudal edge of valva, slightly concave in middle ventrally; brachiola strongly modified, short, broad, not reaching caudal edge of valva. Transtilla weakly sclerotized. Aedeagus rather short, pointed ventro-terminally, with short coecum penis; cornuti absent.
Female:
female gen. A. loeflingiana
Papilla analis broad, flat posteriorly, with long hairs submedially and small, hairy, anterior portions which are rounded apically; apophyses posteriores very broad; apophyses anteriores short; sterigma broad, sinuate on both sides of median convexity of posterior edge and with small, rounded anterior projections and delicate sculptures; antrum more strongly sclerotized than remaining portions of ductus bursae, the latter fairly short, membranous. Corpus bursae elongate; signum plate-shaped, elongate.
Early stages:
Larva: head, prothoracic and anal plates and thoracic legs blackish-brown or black; abdomen pale green varying to brownish green, integument strongly shagreened; pinacula brown or black.
Chaetotaxy (after Swatschek, 1958): SD1 and D1 on common pinaculum on A9; SV group on A1, 2, 7, 8 and 9 is 3:3:2:2:2, sometimes also 2:2:2:2:2; L-setae on A1 situated in a vertical line; V1 setae about twice as far apart on A9 than on A8.
Biology:
A single generation yearly; hibernation in egg stage; larvae feed within folded or rolled leaves of Quercus ; also found on Carpinus and Acer.
Distribution:
Western part of Palaearctic Region.