LASIOPTERA. 133 



a. Metatai'sus short. 



b. Abdomen with yellow bands. Species 1. 



b b. Abdomen wholly black. Species 3. 

 a a. IMetatarsus long. Species 3. 



1. picta, Meig. Zw. i. 89. 1 (1818) ; Winn. Plcea, capite, halte- 

 ribus abdominis fusciis interruptis ventreqnc Jlavis, antennis nigris, thora- 

 cis lateribus pectoreqiie fulvis, alis Umpidis, tibiis apice tarsisque nigris. 

 Long. \\; alar. 3 lin. 



PiceoKs. Head yellow. Antenna? black. Thorax tawny on each side 

 and beneath. TFings limpid; veins and cilia black; costa apparently 

 thick, the costal, mediastinal, and subcostal veins being contiguous ; 

 subanal vein straight ; anal indistinctly forked, forming with its second 

 branch an extremely obtuse angle, its first branch almost obsolete. 

 Ilalteres yellow. Abdomen icith an interrupted yelloio band on each seg- 

 ment ; underside yelloio. Legs long, slender, yellow ; tarsi longer than 

 the tibice ; hind tarsi about thrice the length of the tibice ; tarsi and tips 

 of the tibiae black. 



Eare. In the British Museum. (E.) 



2. albipennis, Kl. Zw. i. 40. 5 (1804). At^'a, alis Umpidis apice 

 suhcinei-eis, venis nigris, costa albo-uniguttata, pedibus piceis validiuscu- 

 lis. Long, li; alar. 3 lin. 



Beep black. TFings limpid, greyish at the tips ; veins and cilia black ; 

 costa with a white spot at the tip of the subcostal vein ; subcostal and 

 mediastinal veins distinct, separate ; subanal vein straight ; anal form- 

 ing with its second branch a slightly curved line ; first branch indis- 

 tinct, very near the anal vein. Legs 2^iceous, rather stout, 'moderately 

 long ; tarsi longer than the tibice. 



Eare. In the British Museum. (E.) 



3. stygia, Hoffra. MSS. ; Meig. Zw. i. 91. 7 (1818). Obscure 

 fusca, subtus sordide fiava, antennis nigris, alis nigro-cinereis pubescen- 



tibus, venis nigris, pedibus validiusculis albidis. Long, -j ; alar. 2 lin. 



Brotcnish, dingy yellow beneath. Antennaj black. Wings dark grey, 

 very thickly pubescent ; veins black ; subcostal vein distinct, ending at 

 beyond three-fourths of the length ; subanal distinct, indistinctly forked 

 towards its tip ; anal forming a very obtuse angle near its tip ; the fore 

 branch obsolete. Legs rather stout, moderately long, with whitish reflec- 

 tions ; metatarsus longer than any of the following joints. 



Rare. (E.) 



Lasioptera Biihi, Schr., lives in excrescences on the stems of 

 different species of Ruhus, and probably is also a British species. 

 L. aurlchicta, Winn., lives at the roots of Festuca prateufiis, 

 changes to a pupa in a snow-white covering, and appears two 

 weeks afterwards in the fly state. 



