550 Syrphidae. 



is similar to that of the next genus and lives in the same way in- 

 decaying wood. 



The species of S'pilomyia are beautiful, wasp-like flies ; they occur 

 in woods and seek various flowers, especially Umbelliferæ. 



Of the genus 5 species occur in the palæarctic region; one is 

 found in Denmark. 



1, S. saltuum Fabr. 



1794. Fabr. Eut. Syst. IV, 287,32 (Syrphus) et 1805. Syst. Antl. 189,9 

 (Milesia). — 1830. Meig. Syst. Beschr. VI, 349. — 1843. Zett. Dipt. Scand. 

 II, 856, 2 et 1849. VIII, 3188, 2. - 1862. Schin. F. A. I, 365. — 1907. 

 Kat. palåarkt. Dipt. III, 143. — Syrphus diophthalmus Rossi (nec L.) 1790. 

 Faun. Etr. II, 294, 1477, Tab. X, Fig. 2. — 1822. Meig. 1. c. III, 229, 3 

 {Milesia) et 1830. VI, 349 {Spilomyia). 



Male. Vertex elongated, black, a little greyish pruinose, the 

 anterior half yellow; frons and epistoma yellow, white pruinose at 

 the sides and narrowly down along the eyes and also on the Iower 

 part ; frons with a blackish triangle above the antennæ, epistoma with 

 a more or less distinct, black or brownish middle stripe and just the 

 anterior mouth edge black; the middle stripe does not reach to the 

 antennæ. Vertex black-haired, the yellow anterior part bare; frons 

 without hairs; epistoma with erect, pale hairs, except along the middle 

 and on the Iower part ; just below the antennæ at each side the hairs 

 are dark. Jowls reddish yellow, a little pruinose. Occiput whitish 



Fig. 182. Antenna of S. saltuum ^, from the inside. X 40. 



grey pruinose along the eyes, the hairs whitish below, yellowish above 

 and here also with numerous not long, black hairs, sometimes the 

 hairs almost all black. Eyes with dark, longitudinal stripes and spots, 

 the part at the vertex and suture and all the front and hind margins 

 dark, further a longitudinal stripe down the hinder part, more or less 



