mesonotum blackish gray, with only weak subshine; 
legs with femora black, foreknee yellowish, tibiae 
and tarsi yellowish brown; wing veins pale; squama 
and fringe whitish; male genitalia with aedeagus 
ending in long tubule, divided only at apex (figs. 
395, 396), with 2 tubules then diverging at right 
angles . 
Host/Early Stages. Urtica spp. 1st instar larva 
forming narrow leaf mine beside margin and this 
later develops into broad blotch (fig. 397); 
larval posterior spiracles each with 3 bulbs 
(without groups of hairs as in A. pseudoreptans ) ; 
puparium reddish brown. 
Distribution. California, Washington, almost 
certainly more widespread; Canada, Europe. 
References. Spencer, 1969a: 55; 1981: 126, part 
2, p. 267. 
Gena narrow, at rear at most 0.17 height of eye 25 
25 (24). Frons 1.5 times width of eye; gena narrow, at most 
0.25 height of eye A. pseudoreptans Nowakowski 
Synopsis. Head (fig. 398) with frons matt black 
or more brownish, not projecting above eye; gena 
exceptionally narrow, 0.08 height of eye in 
center, up to 0.11 at rear; 3d antennal segment 
normally black, occasionally more brownish; meso- 
notum with 3 strong dc, grayish black; legs with 
femora black stnd yellowish foreknees, tibiae and 
tarsi paler, brownish yellow; wing length from 2.8 
to 3.9 mm in both sexes, veins pale; squama and 
fringe silvery yellow; male genitalia with aedea- 
gus (fig. 399) distinctive, asymmetrical (illus- 
trated by Frick, 1952a: 348, as A. reptans ) . 
Host/Early Stages. Urtica spp. Larval mine 
normally commences along leaf margin, widening 
into irregular blotch, turning black when old; 
larval posterior spiracles each with 3 bulbs and 
4 patches of hairs (fig. 400); puparium reddish 
brown. 
Distribution. California, Idaho, Oregon, Washington; 
Canada, Europe. 
References. Frick, 1952a (as A. reptans); Spencer, 
1969a: 54; 1981: 124. 
Remarks. This species was confused by earlier 
authors with the true A. reptans Fallen. They oc- 
cur together in America and in Europe and both feed 
on Urtica. 
— Frons broader, twice width of eye 
A. hardyi Spencer, n. sp. 
Synopsis. Frons dark brown, not projecting above 
eye; 2 ors, 3 ori; gena narrow, 0.17 height of 
eye; 3d antennal segment small, round, black; 
mesonotum matt grayish black, with 3 strong post- 
sutural dc; legs brownish, with all knees yellow, 
tibiae and tarsi conspicuously yellow; squama and 
fringe silvery white; male genitalia with aedeagus 
as in figures 401, 402. 
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