AQUATIC INSECTS IN NEW YORK STATE 2S1 



the eyes and en*Mng at the middle of the thorax on its ventral 

 «ide. Palpi ending in a J-shaped hook. 



Respiratory horns cylindric, becoming laterally flattened at 

 tip, erect but bent anteriorly in their distal third. Wings and 

 legs closely covering the ventral surface; tips of the wing cases 

 reaching the base of the fourth abdominal segment; legs much 

 curved beneath the wing cases; tarsi laid straight along the 

 ventral side of the abdomen, those of the fore legs reaching 

 the constriction of the middle of the fourth, those of the middle 

 and hind legs, the apical circlet of spines on the fourth abdom- 

 inal segment. Thorax unarmed; a low carina between the 

 respiratory horns, ending posteriorly in a series of transverse 

 corrugations, on either side of which ai-e si)ots and lines of 

 darker color. 



Abdominal segments transversely divided by a constriction, 

 both before and behind which, dorsally and ventrally, is a broad 

 pale area bordered by darker brown, forming at the sides a 

 band which includes the row of spiracles at the anterior border 

 •of segments 1-7. In the pale band on the lateral margin there 

 arises a stout spine in the basal half and a larger one in the 

 apical half of segments 2-7; here are also numerous brown 

 dashes, merging into the larger, phalerate markings already 

 described. 



On the dorsal side in the apical half of each of segments 1-7 

 there is a transverse row of about a dozen sharp, minute thorns, 

 Tery minute on 2, but becoming larger posteriorly; on the ven- 

 tral side of same is a similar row of stouter thorns, becoming 

 much stouter and fewer and nearer the hind margin posteriorly, 

 while before them, near the middle constriction, stand an iso- 

 lated pair of similar size. On segment 8 there are three pairs 

 of stout spines on the dorsum, the intermediate pair being the 

 largest, and there are three lesser pairs on the venter. On the 

 -end of the abdomen, and perhaps belonging to a ninth segment, 

 there are two other |)airs of spines, a larger yellowish, brown 

 tipped, straight pair, and a smaller, terminal, upcurved pair. 



Epiphragma fascipennis Say 



Plates 8, 9 



Xiimnobia fascipennis Say, Acad. Nat. Sci. Phila. Proc. 3:19, 



11:823 

 1828 Limnobia fascipennis Wiedemann, Aussereur. zweifliig. 



Insecten, 1:31 

 1859 Epiphragma pavonina Osten Saclien, Acad. Nat. Sci. Phila. 



Proc. p.239 

 1SG9 Epiphragma fascipennis Osten Sacken, Mongr. N. Am. 



Dipt. 4:191 



