Phorocera. 353 



and Villeneuve declares it a sure character (Ann. des Se. Nat. Zool. 

 10, VII, 1924, 22, note). As seen also the hypopygium shows a little 

 difference. 



3. Ph. echinura R. D. 



1830. E. D. Myod. 109, 3 et 1863. Posth. I, 555, 4. — 1907. Kat. palåarkt. 

 Dipt. III, 318. — 1921. Baer, Zeitschr. f. angew. Ent. VII, 353. — Spongosia 

 occlusa Rond. 1859. Dipt. Ital. Prodr. III, 183, 1. — 1889. B. B. Denkschr. 

 Akad. Wiss. Wien, LVI, 94, Tab. III, Fig. 48 et 1893. LX, 119. — 1895. Pand. 

 Rev. Entoni. XIV, 343. 19 {ZenilUa). — 1907. Villen. Ann. Soc. Ent. de Fr. 

 LXXVI, 384. 



Male. Frons above of about the breadth of the eye, somewhat 

 protruding; cheeks broad. Orbits greyish or yellowish grey, downwards 

 together with cheeks and jowls silvery; frontal stripe velvet blackish 

 brown, seen from in front yellowish. Weak outer vertical bristles 

 present. Frontal bristles descending a little below insertion of arista. 

 Vibrissæ strong. Orbits and jowls with black hairs. Occiput grey, 

 with dense yellowish hairs and no black hairs behind postocular 

 bristles. Eyes with dense yellowish hairs. Antennæ black; third joint 

 more than twice as long as second; arista distinctly thickened in 

 basal half. Palpi yellowish at apex, dark on basal part. Thorax 

 blackish, greyish pruinose, with four somewhat broad black stripes, 

 the median abbreviated behind; scutellum brownish with the base 

 dark. Thorax black-haired; a præsiitural intraalar bristle; apical 

 scutellar bristles only a little smaller than the others, crossing; some 

 distinct discai bristles. Abdomen conical, blackish, obscurely reddish 

 on the sides of second, third and fourth segment; the three last seg- 

 ments greyish white pruinose, shifting with dark tessellations according 

 to view, the hind margins and a broader hind part of fifth segment 

 black; a narrow grey middle line visible. Abdomen black-haired, 

 second segment with a pair of marginal bristles, third with a pair of 

 discai and marginal, and fourth with a pair of discai and a row of 

 marginal bristles; fifth segment is densely covered all over with a 

 little smaller bristles. Fourth sternit triangularly pointed, fifth cleft 

 to the base. Hypopygium not large; upper forceps cleft above at 

 base, the corners drawn out into two long lamellæ, densely beset 

 with long, backwards directed hairs; the lower part of the forceps 

 elongated cordate, carinate and with the apical part pointed and bent 

 ventrally. Legs black. Wings a little tinged, especially at base; veins 

 blackish; first posterior cell just closed, ending considerably before 



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