Stratiomyiidae. 53 



O. inicroleon is very rare in Denmaric and lias oniy been talten 

 on three occasions; in Teglstrup Hegn by Fr. Meinert, eight specimens, 

 and in Jntiand at Dollerup near Viborg and at Funder near Sili<e- 

 borg by Ax. Petersen, four specimens; on tbe latter locality it was 

 talven on '"'.-. and ■' i; 1906. 



Geograpliical distribution: — Nortbern and niiddle Europe from 

 the Southern Sweden and Finland to nortbern France. 



4. O. ornata Meig. 



1S22. Strut iomijs, Meig. Syst. Beschr. III, 144, 13. — 1842. Stratiomys, 

 Zett. Dipt. Scand. I, 136,4. — 1846. Loew, Linn. Entom. 1, 476, 6.— 1862. 

 Schin. F. A. I, 18. — 1903. Kat. palaarkt. Dipt. II, 27. 



Male. Eyes bare, unicolorous, facets in about the lower third 

 smaller than above, the dividing line rather sbarp. Fare moderately 

 protruding, black with whitish grey hairs. Antennæ dark brownisli, 

 sometimes paler, lirst joint somewhat longer than the second. Thorax 

 brownisli black, clothed with dense, yellow pubescence; below the 

 pubescence is paler. Scutellum yellow, black at the base, the spines 

 witli black tips. Abdomen black with large yellow side spots on se- 

 cond, third and fourtli segments, and the side- and hind margins 

 of the fifth segment yellow; sometimes the spots at the same side are 

 connected and thus enclosing triangular, black spots at the margin. 

 Venter pale yellow, often with a small, black spot, or a pair of spots 

 on the middle of the third and fourth segments. (Quite fresh specimens 

 are of a distinct greenish colour, but later on this colour changes.) 

 Abdomen clothed with long, yellow or greyish iiairs. Legs yellow, 

 femora black at the basal half; tibiæ with a small, more or less in- 

 distinct, blackish ring in the middle; tarsi blackish brown towards the 

 ends; femora long yellow haired, the dense ciliation at the tip of the 

 middle femora especially distinct; tibiæ short haired. Wings hyaline 

 with yellow veins, cubital vein forked, the third of the veins rising 

 from the discai cell thin and abbreviated. Halteres pale yellow. 



Female. Face black, the mouth edge and most of the yowls 

 yellow; front black with a pair of yellow spots above the antennæ, 

 another pair in tbe middle and a third pair on the vertex ; hinder eye- 

 margin yellow, connected with the spots on the vertex, clothed with 

 golden hairs; the spots on the front sometimes more or less confluent. 

 Thorax yellow on the sides, and with a yellow spot on the pleura 

 below the wing-root, the disc clothed with erect hairs as in the 

 male but a little shorter, and besides with depressed, golden pube- 

 scence. Abdomen as in the male but the side spots always separate. 

 Legs all yellow, only the tarsi darkened towards the ends. 



Length 13,.5 — 1.5,.5 mm. 



