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American Midland Naturalist Monograph No. 3 



two-thirds, entirely white on apical third. Fringe scales arranged in alternately 

 dark and pale groups. 



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

 86B). Ninth tergite (IX-T) with lobes (IXT-L) broadly rounded, widely 

 separated, each bearing several scattered setae. Tenth sternite (X-S) promi- 

 nent, heavily sclerotized. Phallosome (Ph) cylindrical, rounded apically, open 

 ventrally, closed dorsally. Claspette (CI) with stem curved, slender, expanded 

 apically; expanded portion attached to basal third of basistyle and bearing about 

 five seta-like filaments on crown. Basistyle (Bs) about twice as long as broad, 

 cylindrical, nearly truncate at apex, clothed with sparse scales and numerous 

 long setae; basal and apical lobes absent. Dististyle (Ds) reticulated, a little 

 more than half as long as basistyle, moderately inflated medially, tapering 

 distally, slender, and curved near tip, terminating in a peg-like claw (Ds-C). 



larva. Fig. 87). — Head broader than long. Antenna shorter than head, 

 moderately spinose; antennal tuft generally 8 to 15-branched, barbed, inserted 

 near middle of shaft; tip of antenna apically with a short spine, a moderately 



Fig. 87. Larva of PsoTophora signipenriis (Coquillett). A, Male 

 terminalia. B, Comb scale. C, Peclen tooth. D, Head. 



