200 American Midland Naturalist Monograph No. 3 



tudinal stripe of narrow goIden-yellow scales, the stripe broader posteriorly, 

 narrowed anteriorly and projecting forward between the eyes; a submedian 

 patch of narrow dark bronzy-brown scales present on either side of the median 

 pale-scaled area; lateral region of occiput clothed with broad appressed yellow- 

 ish scales surrounding a patch of broad appressed dark scales. Erect forked 

 scales numerous, those on central portion of occiput pale. Thorax: Integument 

 of scutum black, clothed with narrow golden to golden-brown scales dorsally, 

 becoming dark bronzy-brown laterally; anterior margin and prescutellar space 

 somewhat paler; frequently a pair of narrow, rather indefinite, longitudinal 

 submedian lines of pale yellow to golden-yellow scales originating at the outer 

 margins of the prescutellar space and extending forward nearly the full length 

 of the scutum. Posterior pronotum clothed with narrow dark bronzy-brown 

 scales. Abdomen: First tergite whitish-yellow scaled; remaining tergites each 

 laterally white, basally and medially pale yellow, and with a pair of large 

 quadrate dark-scaled submedian patches. Venter whitish to pale-yellow scaled, 

 speckled with dark scales. Legs: Femora and tibiae dark on outer aspects, 

 liberally speckled with pale scales; inner surfaces pale; white knee spots present. 

 Hind tarsus with segment 1 white-ringed at base and yellow ringed at middle, 

 segments 2 to 4 broadly white-ringed at bases, and segment 5 entirely white. 

 Fore-and mid-tarsi similarly marked, but with bands narrower on segments 1 

 to 3 and absent on 4; segment 5 of fore-tarsus usually entirely dark scaled; 

 segment 5 of mid-tarsus usually principally white, blended with dark scales. 

 Wing: Plume scales narrow; squame scales rather broad, mixed dark-brown 

 and white. 



ADULT MALE. — Coloration similar to that of female. TERMINAlia (Fig. 

 107C). Lobes of ninth tergite (IXT-L) about two-thirds as long as wide, 

 separated by a little less than the width of one lobe, each bearing several short 

 stout setae. Tenth sternite (X-S) prominent, heavily sclerotized. Phallosome 

 (Ph) stoutly conical, about two-thirds as broad as long, rounded apically, open 

 ventrally, closed dorsally. Claspette stem (CI-S) rather stout (usually slightly 

 stouter than in A. mitchellae) , pilose, somewhat curved, extending to or slight- 

 ly beyond basal lobe and bearing a short seta near apex arising from a promi- 

 nent tubercle; claspette filament (CI-F) as long as stem, slender, curved. 

 Basistyle (Bs) about three times as long as width across middle, cylindrical, 

 rounded at apex, clothed with scales and numerous long setae; basal lobe (B-L) 

 only slightly raised, bearing numerous short setae; apical lobe absent. Dististyle 

 (Ds) about two-thirds as long as basistyle, broader at basal third; terminal 

 claw (Ds-C) slender, one-fifth as long as dististyle. 



The terminalia of this species is very similar to that of A. mitchellae. The 

 most reliable character for separation is found in the basal lobe, which is more 

 prominent in A. mitchellae. After carefully comparing terminalia of both 

 species, it is usually possible to identify subsequent specimens with reasonable 

 certainty. 



larva. (Fig. 108). — Head broader than long. Antenna about half as long 

 as head, curved, spinose; antennal tuft multiple, finely barbed, inserted near 

 middle. Head hairs: Preantennal (A) multiple, barbed, extending to insertion 



