Lypha. 405 



in male, in female the iippermost transverse. Gheeks haired above. 

 Vibrissæ ascending to the middle. Oral bristles well developed. Eyes 

 hairy. Epistoma straight, retreating. Oral cone and proboscis rather 

 short; clypeus forceps-shaped; palpi thread-like. Antennæ inserted 

 at middle of the eye; tliird joint fully twice as long as second; arista 

 with second joint slightly elongated. Thorax rectangular; three post- 

 sutural doisocentrals and three præ- and three postsutural acrosti- 

 chals; no præsutiiral intraalar bristle. Scutellum with four marginal 

 bristles on each side, the apical small, crossing. Three sternopleiiral 

 hristles. Pteropleiira with a long bristle above. Abdomen oval; 

 excavation on second segment reaching hind margin ; there are discai 

 and marginal bristles; second segment withoiit bristles; fifth with 

 bristles all over. Genitalia not large; upper and lower forceps of 

 same length. Legs with numerous bristles; claws and pulvilli small; 

 front tarsi in female with the three last joints a little dilated. Wings 

 with first posterior cell closed at the margin, ending rather near 

 apex of wing; discai angle rectangular, without or with a quite short 

 veinlet; no or a very small costal spine. 



The species is parasitic on Chrysomelids and Rhopalocera, and 

 belongs to Pantel's group 4 (Thompson 1923). 



Only two palæarctic species, one occurring in Denmark. 



1. L. dubia Fall. 



1810. Fall. Vet. Acad. Handl. XXXI, 275 et 1820. Dipt. Suec. Muse. 

 29, 60 {Tachina). — 1824. Meig. Syst. Beschr. IV, 360, 210 (Tachina) et 

 1838. VII, 256, 22 (Exorista). — 1844. Zett. Dipt. Scand. III, 1111, 108 et 

 1859. XIII, 6105, 108 {Tachina). — 1862. Scliin. F. A. I, 460, 463 (Exorista). 



— 1889. B. B. Denkschr. Akad. Wiss. Wien, LVI, 93, Tab. II, Fig. 43 {Aporo- 

 myia). — 1895. Pand. Rev. Entom. XIV, 331, 2 {Phorocera) et 334, 1 {Zenillia). 



— 1900. Villen. Bull. Soc. Ent. de Fr. 160, 21 (Exorista). — 1907. Kat. palåarkt. 

 Dipt. III, 221. — 1921. Baer, Zeitschr. f. angew. Ent. VII, 136. — 1924. Stein, 

 Arcli. f. Naturgesch. 90, 6, 55. — Exorista herberidis Meig. 1838. I. c. VII, 257, 

 23. — 1900. Villen. 1. c. 160, 22. — Tachina umbrinervis Zett. 1844. 1. c. III, 

 1146, 146. — 1862. Schin. F. A. I, 526 (Tryphera). 



Male. Frons above scarcely half as broad as the eye; cheeks 

 above nearly as broad as frons, narrowing downwards. Orbits and 

 cheeks silvery, but dark in certain views; jowls grey; frontal stripe 

 black or brownish. Frontal bristles numerous. Orbits and upper half 

 of cheeks black-haired; jowls with long black hairs. Occiput grey,, 

 with whitish hairs and rows of black hairs behind postocular bristles. 

 Eyes with long pale hairs. Antennæ black, grey pruinose, third 



