Sarcophaga. 191 



forceps long, somewhat slender, attenuating and curved a little 

 ventrally; it is cleft in about apical half, the arms a little incised in 

 ventral margin before the sharp, hookformed apex, also sometimes 

 with a shallow emargination dorsally. Claspers of equal length, with 

 curved, hook-shaped apex. Penis long, the end short-pointed and 

 pointing downwards, above it a pair of long at the apex bifid distal 

 apophyses, curved towards each other, and inwards to them a pair 

 of rod-like proximal apophyses; above the apophyses small upper 

 and larger lower, paler lobes are seen. Posterior femora densely 

 fringed below; hind tibiæ with long antero- and posteroventral 

 fringes; middle femora with a comb, but no posteroventral bristles 

 basally; hind femora with an anteroventral row of strong bristles. 

 Wings shghtly tinged; costal segment 3 longer than 5; subcostal 

 vein bare; no costal spine. 



Female. Frons broader than the eye; bristles on cheeks stronger 

 than in male and rather strong. The triangularly oval split in sixtli 

 segment nearly quite ventral, with strong marginal bristles; th& 

 segment grey or reddish. 



Length 8 — 14 mm. 



The species is recorded to vary somewhat, the hypopygium may 

 be red: var, exuherans Pand., or the forceps may be broader and 

 broad to the end with a small abrupt apex: var. harpax Pand.; also 

 length and shape of apex of the distal apophyses may vary, but 

 such varieties have not occurred with us. 



S. tuberosa seems to be rare in Denmark, I know only two copu- 

 lated pairs, taken at Tisvilde in July (the author). 



Geographical distribution: — All Europe, on Formosa, in India 

 and Japan; towards the north known from Finland. Kramer records it 

 as bred from Lymantria monacha and Dendrolimus pini. From North 

 America the main form is not known, but the varr. harpax and exuhe- 

 rans and a third variety, sarracenioides Aldr. are recorded, harpax 

 also from Hawaii and Fiji islands. The var. sarracenioides is interesting 

 by having been frequently bred both as scavenger and parasite,. 

 from carrion and from various gråshoppers, beetles and Lepidoptera. 



16. S. scoparia Pand. 



1896. Pand. Rev. Entom. XV, 189, 26. — 1907. Villen. Ann. Soc. Ent. 

 de Fr. LXXVI, 396. — 1907. Kat. palåarkt. Dipt. III, 490. — 1911. Kram. 

 Abhandl. Nat. Geseli. Gorlitz, 27, 26, Taf. I, Fig. 3. — 1913. Bottch. Deutsch. 

 Ent. Zeitschr. 3, Fig. 32. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 198. — 



