Asilidae. 13 



Geographical distribution: — Northern and niiddle Europe down 

 into France; towards the north to niiddle Scandinavia; and in the east 

 of Siberia. 



2. L. guttiventris Zett, 



1842. Zett. Dipt. Scand. 1. 187, 2. et 1849. VIII, 2976, 2. - 1847. 

 Low, Linn. Entom. II, 397, 3. — 1862. Schin. F. A. I, 118. — 1903. Kat. 

 palaarkt. Dipt. II, 102.— 1820. L. ci/lindrica Meig. (nec. Deg.) Syst. Beschr. 

 II, 343, 1, Tab. XXI, Fig. 16. 



Male. Epistoma white or greyish white, epistomal beard white. 

 Proboscis and palpi black. Frons and vertex brownish grey; occiput 

 grey, the occipito-orbital bristles blaekish above but whitish lower 

 down. Antennæ black, the second joint rufous; the style pubescent 

 (requires a somewhat high magnifying power to be distinctly seen) 

 (Fig. 5). Eyes slightly dark greenish. Thorax much as in cylindrica, 



Fig. 5. Anlenna of L. guttiventris. X 40. 



brownish grey with three dark brown, broad stripes, the lateral 

 stripes abbreviated in front, the niiddle stripe divided anteriorly by a 

 grey line; scutelluni grey; humeral and postalar calli more or less 

 rufous; pleura grey; the præsutural and intraalar bristles black. Ab- 

 domen grey, the apical part of the segments lighter, in front of this 

 part a broad, transverse, dark brown band, generally prolonged for- 

 wards in the middle. Not rarely the hind margin of the second and 

 third segments is slightly yellowish. Venter mostly coloured like the 

 dorsal surface. The abdomen is sparingly clothed with short, yellowish 

 hairs, at the margin of the first segment there are longer bristles. 

 The genitalia shining black, ferrugineous beneath, with pale hairs. 

 Legs yellow to ferrugineous; the coxæ grey; the trochanters with a 

 black point at the apex on the inside; the hind femora with a blaekish 

 ring near the tip and generally with a narrow blaekish line nearer 

 to the base on the anterior side, the middle femora often with a 

 blaekish patcli near the apex on the front side; the middle tibiæ more 

 or less dark along the front side, sometimes the front tibiæ with 

 traces of the same, the hind tibiæ dark brown along the anterior and 

 posterior sides, most distinctly on the anterior side; the tarsal joints 

 yellow with the apex brown, but the tarsi on the whole darker 

 towards the apex, the last joint quite dark. The legs are clothed 

 with short, pale hairs, and the tibiæ and tarsi bear the ordinary 

 bristles which are pale on the tibiæ and blaekish on the tarsi. The 



