128 THOMAS SAY FOUNDATION 



Chloroperla cydippe Newman. 



i Plate 11. fig. 6; plate 23, figs. 1-3. 1 

 ]839. Clihjrii/H rht cydippt Newman, Mag. Nat. Bist., 3:88. 

 1842. Isopteryx cydippt Pictet, Inc. Neurop., \>. 3 17. 

 L852. Perla cydippt Walker, Gat., p. 168. 

 L861. Isopteryx cydippt Eagen, Syn. Neurop. N. A., p. 31. 

 1892. Isopti i- 1 i.r cydippe Banks, Cat., p. 342. 

 1904. Isopteryx cydippe Hanks. Proc. Ent. Soc. Wash., 6:205. 

 1907. Chloroperla cydippe Banks, Cat. Neurop., p. 12. 

 1895. Chloroperla brevis Banks, Trans. Am. Ent. Soc, 22:314. 

 1907. Alloperla brevis Banks, Cat. Neurop., p. 13. 



Length to tip of wings, male, 6.5-7.5 mm. ; female, 8-9 

 mm.; expanse, male, 12-13 mm.; female, 14-16 mm. 



General color yellowish green, bright green in life. 



Head a little wider than prothorax; pale yellowish 

 green ; three small black ocelli, the hind ocelli closer to 

 the eyes than to each other. Antennae pale at base, in- 

 fuscated towards the tip. Apical segment of palpi short. 



Prothorax transversely oval ; angles much rounded ; 

 uniformly pale ; subrugulose. Legs pale ; tips of tarsi 

 blackish. Wings greenish hyaline, veins pale ; subcosta 

 ends much before the cord; several crossveins before the 

 end of subcosta and one beyond ; second anal vein of fore- 

 wing branched ; second cubital vein of f orewing short, 

 downcurved and originating opposite the tip of first anal 

 vein ; hind wing without a folded anal field ; radial sector 

 with two branches in forewing, unbranched in hind wing. 



Abdomen pale. Caudal setae pale, short, with about 8 

 segments. 



Male. Ninth abdominal sternite much produced and 

 evenly rounded behind ; tenth abdominal tergite partly 

 cleft ; supra-anal process modified into a very short, some- 

 what triangular, recurved process ; subanal lobes small, 

 unmodified. 



Female. Hind margin of eighth abdominal sternite 

 produced into a broad, rounded subgenital plate which 

 normally extends over most of the ninth sternite. 



Distribution.— Georgia, Clayton, May 18-23, 1911 (J. C. 

 Bradley) ; Burton, May 21, 1909. North Carolina. Mary- 

 land, Beltsville, May 2, 1915 (W. L. McAtee). Maim:, 

 Echo Lake, Mt. Desert, July 12 (C. W. Johnson) ; Orono, 

 May. New Hampshire, Durham. Pennsylvania, Harris- 

 burg, May 9-15; Montgomery Co., May 26. New York, Ith- 

 aca, May-July; Newfield ; Sport Island, Sacandaga R., June 

 17 (C. P. Alexander) ; Hamburg, July, 1908. Wisconsin, 

 Polk Co., July (Baker). Nevada, Reno, 1878 (Morrison). 



