426 



Tachinidae. 



The species are parasitic on larvæ of larger Neterocera; they belong 

 to Pantel's group 4. E. fera is known to pupate within the skin of the 

 host larva, and its larva to get the air through a primary hole. The 

 species occur especially on sandy locaUties. 



Of the genus about 20 pelæarctic species are recorded, 2 occur 

 in Denmark. 



Remarks: I have kept the name Echinomyia though strictly it 

 should be replaced by Tachina Meig. 1903 with the type grossa. 



Table of Species. 



1. Very large, quite black species 1. grossa. 



— Smaller, partly red species 2. fera. 



1. E. grossa Linn. 



1758. Linn. Syst. Nat. X, 592 et 1767. XII, 2, 991, 75 (Musca). — 1805. 

 Fabr. Syst. Antl. 310, 7 {Tachina). — 1820. Fall. Dipt. Suec. Muse. 3, 1 {Ta- 

 china). — 1824. Meig. Syst. Bescbr. IV, 329, 1 {Tachina) et 1838. VII, 182, 2, 

 Tab. LXVIII, Fig. 14—30. — 1844. Zett. Dipt. Scand. III, 992, 1. — 1862. 

 Schin. F. A. I, 425. — 1896. Pand. Eev. Entom. XV, 74, 3. — 1907. Kat. 

 palåarkt. Dipt. III, 194. — 1921. Baer, Zeitscbr. f. angew. Ent. VII, 129. — 

 1924. Stein, Arch. f. Naturgesch. 90, 6, 43, 2. 



Male. Frons above about as broad as the eye. Orbits and the 

 whole head bright yellow; frontal stripe reddish brown seen from 



above, but from in front greyish or 

 pale yellow pruinose. Frontal bristles 

 descending well below insertion of an- 

 tennæ. Orbits with black hairs, cheeks 

 and jowls with golden hairs. Occiput 

 yellow, with dense yellow hairs. Antennæ 

 with second joint about twice as long 

 as third, this latter nearly quadratic, 

 but dilated inwardly tovvards apex; the 

 antennæ are red, third joint black, only 

 narrowly red at base or all brownish; 

 arista thickened in more than basal 

 half, black, or reddish at base, the two 

 basal joints somewhat elongated. Palpi 

 yellow. Thorax black, shining, black- 

 haired; four or five, sometimes six, 

 often somewhat irregularly placed postsutural dorsocentrals, and gener- 

 ally three præsutural and four postsutural acrostichals, the anterior 



Fig. 88. E. grossa ,^ , antenna. 



