Campylochaeta. 359 



three marginal bristles on each side, the apical strong, crossing; 

 a small subapical may be present. Three sternopleural bristles, but 

 the lower weak, sometimes abortive. Pteropleura with only a bundle 

 of hairs. Abdomen ovate or elongated ovate; excavation on second 

 segment reaching the margin or stopping a little before; there are 

 discai and marginal bristles; second segment without , bristles ; fifth 

 with a row of discai and of marginal bristles. Genitalia not small, 

 bent in under venter; eighth segment large, occupying apex of ab- 

 domen; hypopygium elongated; upper forceps elongated triangular, 

 with apex curved a little inwards; arms of lower forceps a little 

 shorter. Legs not long, more or less robust, especially the tarsi; 

 anterodorsal bristles on hind tibiæ quite unequal; claws and pulvilli 

 in male somewhat elongated; front tarsi in female simple. Wings 

 with first posterior cell just closed or narrowly open, ending quite 

 near apex of wing; discai angle obtuse and apical cross- vein sloping; 

 posterior cross-vein near the middle between medial cross-vein and 

 angle or a little behind; bristles at base of cubital vein or one of 

 them rather strong; a small costal spine. 



The species are parasitic on various Heterocera, especially Geo- 

 metrids. The larva bores out of the host larva and pupates in the 

 ground, and it hibernates as pupa. The breathing of the larva takes 

 place through a primary hole. 



Of the genus three European species are known, two occur in 

 Denmark. — - The two subgenera, Frivaldzkia Schin. with inepta, 

 and Campylochaeta s. str. with præcox have been divided mainly by 

 the direction of the ocellar bristles, and the presence of a bristle on 

 jowls in inepta which should be absent in praecox] as seen from the 

 descriptions, the characters are, however, of no value, as they are the 

 same or nearly the same in both species; a better character would 

 be the bare or hairy cheeks. 



Table of Species. 



1. Cheeks somewhat narrow, bare; legs black 1. inepta. 



— Cheeks very broad, with hairs; legs with tibiæ reddish 2. præcox. 



1. C. inepta Meig. 



1824. Meig. Syst. Besclir. IV, 361, 212 {Tachina) et 1838. VII, 261, 15 

 {Phorocera). — 1900. Villen. Bull. Soc. Ent. de Pr. 161, 8. — 1907. Kat. palå- 

 arkt. Dipt. III, 278 [Zenillia). — 1921. Baer, Zeitschr. f. angew. Ent. VII, 160. 



— Tachina distincta Meig. 1824. 1. c. IV, 413, 302 et 1830. VI, 368 et 1838. VII. 

 263, 2 {Doria). — 1907. Villen. Wien. Ent. Zeitg. XXVI, 248, 6 {Doria). — 1907. 



