ART. 17. NORTH AMERICAN PHOROCERA ALDEICH AND WEBBER. 47 



16. Abdomen with aecoiul to fourth segments shining on the posterior third 



or more 17 



Abdomen with second to fourth segments pollinose or subpollinose to 

 the liind edge; males with a tuft of dense long hair before the 

 middle coxae 18 



17. Basal joints of antennae reddish; venter pollinose in part; male with 



only the usual hair before the middle coxae claripennis Macquart. 



Whole antennae black, slender and elongate; venter shining black (male 



unknown ) indivisa, new species. 



IS. Palpi black on basal half; abdomen broadly red on sides of first, second 

 and third segments, leaving only a median stripe black; the united 

 inner forceps form a slender curved prc^cess. flat behind at nuddle. 

 keeled basally and slightly hooked at tip. 



tessellata Brauer and Bergenstamm. 

 Palpi yellow 19 



19. Parafrontals golden yellow; male genitalia small; base of the united 



inner forceps flat behind floridensis Townsend. 



Parafrontals white or pale yellow; large species with large genitalia, 

 the base of the united inner forceps round, lieeled behind. 



tachinomoides Townsend. 



20. Sides of the face below the lowest frontals bare or with a few hairs 



directed upward 23 



Sides of the face below the lowest frontals with a few hairs directed 

 downward and extending as far as the middle of the third antennal 

 joint . 21 



21. Abdominal hairs not bristly in median region although somewhat erect ; 



small crossvein not iufuscated 22 



Abdominal hairs erect, long and bristly, apical cell open; bucca one-third 

 the eye height; small crossvein iufuscated specularis, new species. 



22. Apical cell closed ; bucca one-half the eye height facialis Coquillett. 



Apical cell open ; bucca one-fourth the eye height meracanthae Greene. 



23. Palpi yellow 27 



Palpi black (in tortricis the apical half or less is sometimes yellow) — 24 



24. Mid tibiae with one bristle on the outer front side near the middle: 



arista thickened on the basal third 25 



Mid tibiae with two bristles on the outer front side near the middle, tlie 

 upper one a little smaller ; two or three sternopleural bristles ; arista 

 slender, hardly thickened basally tortricis Coquillett. 



^lid tibiae with at least two stout bristles on the outer front side near 

 the middle; four sternopleural bristles; arista thickened to the mid- 

 dle; third antennal joint in the male unusually thickened and convex 



on the outer edge sternalis Coqudlett. 



2.J. With four sternopleural bristles; abdominal hairs depressed; thorax 



and abdomen gray pollinose erecta Coquillett. 



AVitli three sternopleural bristles* 26 



20. Mesouotum gray pollinose, with the usual stripes; abdomen gray polli- 

 nose on the first three segments, yellow on the fourth. 



xauthura, new species. 



Mesonotum and abdomen shining black unipihim, new species. 



27. Mid tibiae with one bristle on the outer front side near the middle 33 



Mid tibiae with at least two stout bristles on the outer front side near 



the middle 28 



28. Sides of front outside of the front bristles bearing many long hairs— 30 

 Sides of front outside <>f the frontal bristles bearing only short h:urs__ 29 



5596— 24— Proc.N.M.vol.C;] 31 



