106 Tachinidae. 



slightly to somewhat ascending, those above tlie angle small and 

 no specially strong vibrissa on the angle. Epistoma not retreating, 

 but hollowed in the middle and thus the lower part somewhat reflected 

 and protriiding. Oral cone and proboscis of medium length; clypeus 

 excised to beyond middle. Palpi thread-like. Antennæ inserted above 

 the middle of the eye, long, third joint somewhat longer than the 

 elongated second; arista bare, second joint elongated. Thorax qua- 

 dratic; of bristles only four fme along the hind margin. Scutellum 

 with two marginal bristles on each side, no apical bristles. Sterno- 

 pleura with one (the posterior) bristle and with hairs. Above on 

 pteropleiira a small bundle of hairs. Abdomen short and broadly 

 oval, almost globular, without bristles; excavation on second seg- 

 ment only present at base; a sixth segment visible below anterior 

 to the præhypopygial. Genitalia forming a knob ventrally at apex; 

 apex of abdomen in female simple. Legs not long, robust, especially 

 anterior femora somewhat thickened; the legs without real bristles 

 and thus no ventral bristle on middle tibiæ in both sexes; femora 

 with a row of spinules below in apical half ; claws and pulvilli in male 

 a little elongated. Wings with first posterior cell short-petiolate, 

 or closed at margin, ending a little before apex of wing; angle on 

 discai vein obtuse, more or less rounded; posterior cross-vein near 

 the angle. No costal spine; bristles at base of cubital vein very minute. 



The species rotundatum is parasitic on imagines of Pentatomids; 

 it belongs to Pantel's group 1, the eggs being deposited on the host, 

 the larva bores in and later on forms a secondary breathing-hole 

 in a tracheal bladder in thorax. 



Of the genus two European species are known, one occurring 

 in Denmark (the other belonging to the subgenus Stylogymnomyia 

 B. B.). 



1. G. rotundatum Linn. 



1758. Linn. Syst. Nat. X, L 595 et 1767. XII, 2, 991, 76 {Musca). — 1764. 

 Milll. Faun. Friederichsd. 83, 735 [Musca). -^ 1805. Fabr. Syst. Antl. 311, 12. 

 {Tachina). — ^ 1820. Fall. Dipt. Suec. Ehizom. 9, 1. — 1824. Meig. Syst. Beschr. 

 IV, 204, 1, Tab. XXXIX, Fig. 2L — 1838. Zett. Ins. Lapp. 628, 1 et 1844. 

 Dipt. Scand. III, 1226, 1 et 1859. XIII, 6161, 1. — 1862. Schin. F. A. I, 410. — 

 1889. B. B. Denkschr. Akad. Wiss. Wien, LXI, 142. — 1894. Pand. Kev. 

 Entom. XIII, 81, 1. — 1907. Kat. palåarkt. Dipt. III, 558. — 1921. Baer, 

 Zeitschr. f. angew. Entom. VII, 393. ^ 1924. Stein, Arch. f. Naturgesch. 90, 

 6, 255, 2. — Musca cristata Panz. 1803. Faun. Germ. LXXXIII, 23. — 1824. 

 Meig. 1. c. IV, 205, 2. — 1862. Schin. F. A. I, 411. 



