Helocera. 477 



four postsutural acrostichals; no præsutural intraalar bristlc. Scu- 

 tellum with four marginal bristles on each side, the lateral small, 

 the apical crossing. Two long sternopleural bristleB and one or a 

 couple of smaller. Pteropleura with a small bunch of hairs above. 

 Abdomen conical in male, ovate and flattened in female; excavation 

 on second segment not reaching hind margin; there are only weak 

 marginal bristles, none on second segment. Legs not long and slightly 

 bristled; tarsi somewhat robust, especially front tarsi, and these 

 most robust in female; claws and pulvilli small. Wings with first 

 posterior cell narrowly open, ending at apex of wing; discai angle 

 obtuse, apical cross- vein a little concave; posterior cross-vein rather 

 near medial cross-vein; no costal spine. 



Of the genus only one species is known, also occurring in Denmark. 



1. H. delecta Meig. 



1824. Meig. Syst. Beschr. IV, 349, 190 {Tachina) et 1838. VII, 243, 14 

 (Thryptocera). — 1883. Mik, Verh. zool. bot. Gesell. Wien, XXXIII, 187 et 

 1892. Wien. Ent. Zeitg. XI, 55. — 1889. B. B. Denkschr. Akad. Wiss. Wien, 

 LVI, 102, Tab. V, Fig. 85 et 1893. LX, 202, 95. — 1907. Kat. palåarkt. Dipt. 

 393. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 139. — Tachina maculiventris 

 Zett. 1849. Dipt. Scand. VIII, 3236, 63—64. — E. macrocera R. D. Posth. I, 

 703, 1(?. — Cerophora funesta R. D. 1863. 1. c. I, 701, 1, ?. — 1906. Villen. 

 Wien. Ent. Zeitg. XXV, 286. — Stauferia diaphana B. B. 1889. 1. c. LVI, 105, 

 166, Tab. V, Fig. 99. — 1907. Villen. Wien. Ent. Zeitg. XXVI, 256, 52. 



Male. Frons above about as broad as the eye, somewhat widening 

 downwards. Orbits, cheeks and jowls grey; frontal stripe reddish 

 yellow. Vibrissæ small. Orbits with a row of hairs outside the frontal 

 bristles; jowls with st ronger, bristly hairs. Occiput grey, with black 

 hairs, only pale below in the middle. Antennæ black, reaching to 

 end of epistoma; arista short, thickened in basal half, yellowish at 

 base. Thorax black, shining, grey pruinose, with four black stripes, 

 the median abbreviated at the suture; thorax has black hairs; scu- 

 tellum with a pair of discai bristles. Abdomen black, somewhat 

 shining, with large yellow side spots, occupying second, third and 

 sometimes part of fourth segment, and almost all the venter; abdomen 

 may thus be termed yellow with apical part and a median stripe 

 black; at the front margin of the segments are narrow, white pruinose 

 bands; abdomen is black-haired, with only a pair of indistinct mar- 

 ginal bristles on third and a row on fourth segment; on the latter 

 segment some discai hairs may be stronger than the others. Legs 

 black or brownish black, femora more or less pale on basal part. 



