176 



Orthorrhapha brachycera. 



occur in or near woods and in the vicinity of water. Stæger took it 

 numerously flying in the air and in copula in Charlottenlund on 2*^/8. 

 Geographical distribution : — Northern and middle Europe down 

 into France; towards the north to middle Sweden. 



21. H. gallica Meig. 



1804. Meig. Klass. eur. zweifl. Ins. I, 222, 7 (Empis). — 1822. Meig. 

 Syst. Beschr. III, 9, 15. - 1842. Zett. Dipt. Scaiid. I, 336, 2. — 1862. 

 Schin. F. A. 1, 114. — 1892. Strobl, Verh. zool. bot. Geseli. Wien, XLII, 

 166, 50. — 1903. Kat. palaarkt. Dipt. II, 251. 



Male. Vertex, frons and epistoma grey, frons somewhat narrow; 

 palpi dark, somewhat greyish, with brown or blackish hairs. Occiput 

 grey, with black, downwards with brownish hairs. Antennæ some- 

 what long, black, the basal joints reddish. Thorax grey, with two 

 somewhat distant, slightly darker stripes, abbreviated behind ; a small 

 humeral point reddish. The dorsocentral and acrostichal bristles short, 

 black; the former uniserial, but in piaces irregularly biserial, longer 

 behind, the latter somewhat dense, biserial to quadriserial, but very 

 irregular and sometimes almost quite biserial. Further a humeral 

 bristle, a posthumeral, three notopleural, a supraalar and a postalar 

 bristle, all black and somewhat strong; besides there are finer hairs 

 on the sides and in the præsutural depression. Pleura grey, the 

 spiracles brownish, and likewise a small, indistinct spot below the 

 wing-root. Scutellum with four black marginal bristles. Abdomen 

 grey, sometimes somewhat brownish or yellowish to- 

 wards the base ; it is clothed with brownish or blackish 

 hairs, and has somewhat longer marginal bristles on 

 the segments. Venter similarly coloured, short-haired. 

 Exterior genitalia of medium size, somewhat com- 

 pressed; the lamellæ somewhat shining, with longish 

 hairs. Legs yellow, also the coxæ, the four last tarsal 

 joints dark brown to blackish. Front femora with 

 short, fine hairs on the posterior side; middle femora 

 with a few bristly hairs on the anterior side, which 

 are short towards the apex; hind femora short-haired; 

 front tibiæ short-haired above and below, and with 

 a few short bristles above; middle tibiæ with some 

 fine (sometimes less distinct) bristles above; hind tibiæ 

 with one dorsal row of bristles. Front tibiæ slightly 

 thickened towards the apex, metatarsi very slightly 

 thicker, elongated, cylindrical, straight below and with 



Fig. 66. 

 H. gallica, 



front leg. x30. longish hairs above; they are somewhat shorter than 



