Empididae. 305 



15. T. fasciata Meig. 



1822. Meig. Syst. Beschr. III, 86, 43, Tab. XXIII, Fig. 22. — 1862. 

 Schin. F. A. I, 89 {Platijpalpus). — 1903. Kat. palaarkt. Dipt. II, 283. — 

 Tachydromia candicans var. c: 1842. Zett. Dipt. Scand. I, 285, 17. 



Male. Vertex and frons grey, the latter broader than in candicans; 

 epistoma white ; palpi yellow, large, half as long as proboscis. Occiput 

 grey, with whitish yellow bristles above, while hairs below. Antennæ 

 blackish or brownish, the two basal joints yellow, the third joint 

 short and shorter than the arista. Thorax yellowish grey pruinose, 

 with two more or less distinct, grey stripes in the middle, abbreviated 

 behind; all bristles yellow. Scutellura with four yellow marginal 

 bristles, the two lateral small. Pleura grey pruinose; no black spot 

 above the middle coxæ. Abdomen black, shining; all segments with 

 grey, triangular spots at the sides, meeting or almost meeting in the 

 middle; on the sides the spots occupy the whole length of the seg- 

 ment, while they are narrow and pointed towards the middle. Ab- 

 domen is clothed with short, yellowish hairs. Venter black, but not 

 rarely more or less pale. Legs yellow or pale yellow, tarsi with the 

 last joints -blackish or brownish, and generally more or less distinctly 

 but narrowly brownish or blackish 

 annulated. Front femora somewhat, 

 middle femora considerably thickened. 

 The legs are yellow haired. Wings 

 hyaline, slightly yellowish tinged. 

 Veins brownish, yellow towards the 

 base; cubital and discai vein con- 

 verging, the discai vein with a some- 

 what sudden curve before the apex. Fig. 139. Wing-part of T. fasciata. 

 Balteres whitish yellow. 



Female. Similar to the male; abdomen pointed. 



Length. This species varies in size like candicans, generally it 

 is 3,5 — 4,5 mm., but sometimes specimens may be found down to 

 2,5 mm. 



This species can, on account of the absence of the black spot 

 on the pleura, only be confused with candicans, but it is distinguished 

 by the larger bands on abdomen, a different curvature of the discai 

 vein, and also by the broader frons and the more thickened anterior 

 femora. 



T. fasciata is not rare in Denmark; Amager, Ordrup Mose, Erme- 

 lund, Dyrehaven, Ørholm, Geel Skov, Tyvekrog; on Langeland at 

 Lohals; my dates are ^^,'r> — Vt. It occurs in the same piaces as 

 candicans. 



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