Stratiomyiidae. 



65 



ludimentary ; the labella are rather broad, somewhat protruding forwards 

 and of whitish or yellow colour; when spread out they from a disci- 

 form plate. The maxillæ are rudimentary, forming two smal), chitinous 

 staves, but there are distinct, two-jointed palpi. Thorax is short. 

 nearly quadratic; scutellum unarmed. Abdomen is narrow at the base. 

 narrower than thorax, somewhat broader behind and in the male as 

 broad as, in the female broader than, the thorax; it consists of five 

 segments. The male and female genitalia are similar to those in 

 Sargus. Wings nioderately long, rather broad. with a distinct radial 

 vein and a forked cubital vein; from the discai and 

 second basal cell rise four veins, the fourth being the 

 anterior branch of the postical vein. thus there are 

 five posterior cells and a postical cross-vein betvveen the 

 discai cell and the postical vein. In rest the wings 

 lie parallel over the abdomen. 



The larvæ are similar to those of Sargus but less 

 flattened, and the last seginent has an excision in the 

 apex so that it terminates with two small points; the 

 head is more elongate and narrower than in Sargus, 

 and the eye-swellings are smaller. Each segment has 

 on both surfaces a transverse row of six strong, some- 

 what flattened bristles and a few similar bristles on the 

 margin, the last segment has eight bristles on the 

 margin; the spiracles are as in the Sargus larva. — 

 The larvæ live in the earth on moist piaces, especially 

 in rich soil and in similar localities; they hibernate and Fig. 26. Larva of 

 the development takes place in spring or summer. C.formosa.xi. 



The species of Chloromyia occur in similar localities as those of 

 Sargus, they are also rather lively and are often seen flying and 

 howering. 



The genus only includes two palæarctic species of whicli one occurs 

 in Denmark. 



1. C. formosa Scop. 



1763. Miisca, Scop. Ent. cam. 339, 910. — 1842. Chnjsomi/ia. Zett. 

 Dipt. Scand. I, 154, 1. — 1855. Chrysomyia. Low, Verh. zool. bot. Ver. 

 Wien, V, 138. — 1862. Chrysomyia, Schiii. F. A. I. 23. — 1903. Kat. 

 palaarkt. Dipt. II. 34. 



Male. Eyes densely hairy, the facets in the upper half distinctly 

 larger than below, the colour greenish with an iridescent band on the 

 dividing line between the facets. Front and face black, with long. 

 blackish or brownish hairs. Antennæ blackish brown. Thorax golden 



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