Leptididae. 141 



The species of Leptis are rather characteristic by their long, 

 somewhat slender shape, short head and large wings. They occur 

 especialiy in woods and are found sitting on stems of trees watching 

 for prey such as small Diptera etc, and they are exclusively carni- 

 vorous; they may also be found in low herbage. 



Of the genus 35 palæarctic species are known, of which 7 have 

 hitherto been found in Denmark. 



Table of Species. 



1 . Wings spotted 1 . scoloixicea. 



— Wings unspotted 2. 



2. Stigma present 3. 



— Stigma absent (or at all events only a very slight trace 

 present) 6. 



3. Stigma divided into two parts (vvhen one of the parts is in- 

 distinet the stigma is in this case at all events very small) 4. 



— Stigma not divided, large and distincl 5. 



4. Thorax quite grey with greyish stripes, scutellum grey; 



abdomen with black middle spots 2. maculuta. 



— Thorax grey on the disc with two yellow stripes, the sides 

 more or less yellow, scutellum yellow ; abdomen without 



black middle spots 3. immacuhtta. 



5. Scutellum grey, thorax distinctly striped; larger species.. 4. notata. 



— Scutellum yellow, thorax not, or indistinctly striped; smaller 



species 5. Uneola. 



6. Thorax more or less yellowish, scutellum yellow; coxæ 



yellow 6. tringaria. 



— Thorax and scutellum grey; coxæ grey 7. aimulata. 



1. L. scolopacea L. 



1761. Musca, Linn. Fn. Suec. 1788. — 1842. Zett. Dipt. Scand. 1, 

 216, 1. — 1862. Schin. F. A. I, 172. — 1903. Kat. palaarkt. Dipt. II, 81. 



Male. Front and face grey; the back of the head also grey, with 

 longish, white hairs. Antennæ yellow, arista brown. Second joint of 

 palpi yellow. Thorax grey, with two narrow, longitudinal stripes and 

 the side margins whitish grey, and in the middle a narrow, whitish 

 grey line; humeral calkis yellow. Pleura and sterna grey. The 

 thoracic disc with short, black hairs, the metapleura with long, white 

 hairs; scutellum grey, sometimes a little yellowish at the extreme 

 apex. Abdomen reddish yellow with somewhat triangular or rhom- 

 boidal, or sometimes aimost roundish, black spots along the dorsal 

 middle line, and longitudinal, black spots along each side, the latter 

 often confluent to a black, marginal stripe; the last segment quite 

 black. Venter yellow, the last two or three segments black. Abdomen 

 with black hairs on the dorsal side, on the venter with pale hairs. 



