Lucilia. 



147 



Squamulæ brownish fumigated. Halteres 

 brownish. 



Female. Similar; frons as broad as 

 the eye or broader; cheeks broader than 

 orbits. Squamulæ white. 



Length 6 — 10 mm. 



L. simulatrix is common in Denmark; 

 Copenhagen, Amager, Ordrup, Charlotten- 

 lund, Ermelund, Dyrehaven, Lyngby Mose, 

 Ørholm, Præstevang, Grib Skov, Jyderup; 

 on Funen, and in Jutland at Sønderborg, 

 Horsens, Søndervig and Aalborg; on Born- 

 holm at Allinge; the dates are 2*^/5 — Vs- 

 I have taken it in copula on "/g. 



Geographical distribution: — At present 

 known in Europe down into France; towards the north to southern 

 Sweden (Ringdahl). 



Fig. 28. L. simulatrix, 

 forceps in profile. 



5. L. caesar L. 



1758. Linn. Syst. Nat. X, I, 595, 50 {Musca). — 1805. Fabr. Syst. Antl. 

 289, 26 {Musca). — 1821. Fall. Dipt. Suec. Muse. 46, 20 {Musca). — 1826. 

 Meig. Syst. Beschr. V, 51, 1 {Musca). — 1845. Zett. Dipt. Scand. IV, 1312, 1. 

 — 1862. Schin. F. A. I, .590. — 1896. Pand. Eev. Entom. XV, 218, 14 {Galli- 

 phora). — 1907. Kat. palåarkt. Dipt. III, 532. — 1911. Kram. Abhandl. Nat. 

 Gesell. Gorlitz, 27, 42 Tab. III, Fig. 5. — 1924. Stein, Arch. f. Naturgesch. 

 90, 6, 263, 1. — Musca ruficeps Meig. 1826. 1. c. V, 55, 8. — 1845. Zett. 1. c. 

 IV, 1314, 2. — 1862. Schin. F. A. I, 590. 



Male. Frons above quite narrow, orbits touching or practically 

 touching. Orbits a little dark above, downwards together with 

 cheeks and jowls whitish silvery; frontal stripe black. Orbits with 

 very few hairs; jowls black- or brownish-haired. Occiput greenish 

 black, silvery along the eye-margin, with black, or downwards more 

 brownish hairs. Antennæ black, third joint thrice to four times as 

 long as second. Palpi yellow. Thorax with two postsutural acrosti- 

 chals. Abdomen without marginal bristles on third segment. Geni- 

 talia somewhat large, hypopygium with long, partly bristly hairs. 

 Forceps relatively robust; upper forceps broad at base and here cari- 

 nate, cleft to the middle into two close-lying, thin, nearly straight 

 branches, the dorsal margin curved inwards in the middle; arms of 

 lower forceps broad at base, evenly attenuating, the apex curved 



10* 



