148 The Ohio Journal of Science [Vol. XIX, No. 2, 



aa. Forceps stouter, and more or less curved when viewed from above (except in 

 saffratia, Fig. 23), without lateral falcate process. 



e. Each forceps bearing on median upper surface a lamellate process 

 apparently formed of coalescent bristles. 

 f. This process very long, fimbriate and brush-like, unaccompanied by 

 a smaller inner apical process (Fig. 5); dark species with golden 

 pile on face and posterior margins of abdominal segments. . . 



ferox Will. 



ff. Median process less brush-like, and accompanied by a smaller one of 



more or less similar structure on apical part of inner margin of 



forceps. 



g. The two processes almost contiguous at base, both well-elevated 



distally above surface of forceps, main process about as broad 



apically as eleswhere (Fig. 6); abdominal segments 4-6 in 



part ferruginous with concolorous pile gilva L. 



gg. The two processes more remote at base; the smaller rather closely 

 paralleling surface of forceps, 

 h. Main process as broad or broader at tip than elsewhere. 



i. Median lamella less solidified; inner process not extending 

 beyond end of forceps (Fig. 7); pale pile, light yellowish 

 green to pale golden, not forming distinct bands clear 

 across hind margins of abdominal segments. . . .vivax Will, 

 ii. Median lamella more solidified; inner process extending slightly 

 beyond end of forceps (Fig. 8); pale pile, golden to red gold 

 in color, forming conspicuous bands across hind margins 



of segments vivax anthemon n. subsp. 



hh. Main process narrowed apically (Figs. 9, 10); yellow pile on 

 posterior half of pronotum. 

 j. Segments 3-7 with hind angles and margins ferruginous with 



golden pile ventralis Will. 



jj Segments 3-7 entirely ferruginous with concolorous hair. . 



coquillettii n. sp. 



ee. Forceps without median lamellate process. 



k. Each forceps with a more or less distinctly separate 

 process on apical part of inner margin. 

 1. Process rather closely paralleling body of forceps. 



m. Process, as seen from side, clearly though sometimes 

 only slightly separated from body of forceps, 

 n. Larger species with dense ferruginous pile on 

 abdomen, 

 o. Apical process of forceps distinctly curved, some- 

 what twisted longitudinally, and rather 

 abruptly narrowed near tip (Fig. 11); species 

 with whitish hair on posterior half of pro- 

 notum; segments 3-7 with dense golden to 

 orange red hair. 

 p. Length over 25 mm.; abdominal pile orange 



red triix n. sp. 



pp. Length under 20 mm.; abdominal pile golden. 



trux var. audax n. var. 



oo. Apical process of forceps neither curved nor 

 twisted (Fig. 12); segments 3-7 in part fer- 

 ruginous with concolorous pile, .aimatis n. sp. 

 nn. Smaller species; abdomen nearly bare or with only a 

 moderate proportion of dense (usually golden) 

 pubescence. 



q. Forceps as in Figure 13; blackish species, 

 with legs, except tarsi, reddish yellow. 



sadales walk. 



qq. Apical process of forceps a little longer, more 

 pointed and farther recurrent along inner 

 margin of forceps (Fig. 14); abdominal 

 segments 2 or 3 to 7 yellow to reddi.sh. 

 (For key to varieties see p. 162) . Jelis OS. 



