498 Tachinidae. 



rather narrow and diverging; scutellum brownish at apex or nearly 

 all over. Thorax black-haired ; three postsutural dorsocentrals and 

 two præ- and three postsutural acrostichals. Scutellum with four 

 marginal bristles on each side, the apical small, crossing; a number 

 of discai bristles. Abdomen black, shining, generally a little reddish 

 at the sides on third and fourth segment; third and fourth segment 

 with a more or less conspicuous white pruinose front band, which 

 generally almost or quite wants on fifth segment. Abdomen black- 

 haired; third and fourth segment with a pair of discai and marginal 

 bristles, also on fifth segment a pair of distinct discai bristles; on 

 third segment sometimes two pairs of discals. The bristles scarcely 

 as strong as in connivens. Fifth sternite large, cleft to 

 or a little beyond middle, the bottom of the excision 

 looking rectangular, not rounded or pointed; the 

 lamellæ triangular, with long hairs, the inner margins 

 about meeting at base, but depressed so that it gives 

 the excision an apparently rectangular shape. Geni- 

 talia not small; præhypopygial segment shining, with 

 bristles and hairs; hypopygium likewise with bristles 

 and hairs. Upper forceps shorter than lower, elongated 

 Fig. 109. triangular, straight; it is somewhat broadened at base, 

 E. radicum, ^^^ ^^^ wing-like dilated, and it is carinate in the 

 lower forceos i^iddle, but without tooth at base; arms of lower 

 with scale- forceps resemble those in connivens and are haired in 

 like piece. the same way, and they have likewise a scale-like, 

 but not large piece at base, inwards from which a some- 

 what hook-like but rather straight arm projects, slightly bifid at end. 

 Legs black. Wings more or less yellowish at base; veins brown or 

 dark brown, generally more or less brownish seamed; discai angle 

 without veinlet. Squamulæ whitish. Halteres yellowish to brown. 



Female. Similar; frons as broad as the eye. Abdomen generally 

 with two pairs of discai bristles on third segment and sometimes 

 also on fourth, the latter with a row of marginal bristles; front tarsi 

 with three last joints dilated, and also second slightly dilated. 

 Length 6,5 to about 12 mm. 



This species is similar to connivens, but besides by the breadth 

 of the frons it is in the male known alone by the shape of fifth sternite ; 

 a helping character in the female is the frequent occurrence of two 

 pairs of discai bristles on third abdominal segment. 



E. radicum is common in Denmark; at Copenhagen, Valby, 



