Clytiomyia. 101 



The species rotundiventris is parasitic on Elasmostethus grisens 

 and belongs to Pantel's group 1. 



Of the genus (s. lat.) about 14 European species are known; 

 2 occur in Denmark. 



Table of Species. 



1. Antenna and femora yellow {Subclytia Pand.) 1. rotundiventris. 



— Antennæ and legs black {Heliozeta Rond.) 2. pellucens. 



1. C. rotundiventris Fall. 



1820. Fall. Dipt. Suec. Muse. 23, 46 {Tachina). — 1824. Meig. Syst. 

 Beschr. IV, 356, 204 (Tachina) et 1838. VII, 205, 4, Tab. LXIX, Fig. 22—24, 

 (Clytia). — 1844. Zett. Dipt. Scand. III, 1086, 83 (Tachina). — 1862. Schin. 

 F. A. I, 524 (Clytia). — 1894. Pand. Rev. Entom. XIII, 96, 1 (Subclytia). — 

 1907. Kat. palåarkt. Dipt. III, 571. — 1921. Baer, Zeitscbr. f. angew. Entom. 

 VII, 395. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 257 (Subclytia). 



Male. Frons narrow above, very slightly protruding; jowls 

 nearly one half of the height of the eye. Orbits silvery white, cheeks 

 and jowls more yellowish silvery. Frontal stripe black or brownish 

 black. Orbits bare, jowls with black hairs. Occiput grey, yellowish 

 just below, wdth white hairs and black hairs just above. Antennæ 

 yellow, third joint a little longer than second; arista thickened in 

 less than basal half, apparently bare. Palpi yellow. Thorax quite 

 grey pruinose, with a very slight indication of three stripes. Scutellum 

 with apex yellow. Thorax is black-haired; no posthumeral but an 

 intraalar bristle. Scutellum with two marginal bristles on each side 

 and a weak subapical. Abdomen yellow, in certain light whitish 

 pruinose, with a black, triangular middle spot and a transverse side 

 spot at hind margin on each segment. Abdomen is black-haired, 

 with weak marginal bristles, a pair on second segment and a more 

 or less complete row on the others. Legs yellow with blackish brown 

 tibiæ and tarsi, the former paler on basal part; claws and pulvilli 

 somewhat elongated. Wings slightly tinged ; veins brown ; first posterior 

 cell very narrowly open or just closed, ending at apex of wing; angle 

 on discai vein very obtuse and rounded. Squamulæ white. Halteres 

 yellow. 



Female. I do not know the female. 



Length 4 — 5 mm. 



C. rotundiventris is rare in Denmark, only one specimen, a male 

 is known from Tisvilde; it is the bred specimen mentioned below. 



