Biology of the [NIembracidae of the Cayuga Lake Basin 239 



1S95 Acuialis calva Gillette and Baker, Hera. Colo., p. 67. 

 1907 Micndalis Illinoiensi!^ Baker, Can. Ent. 39:116. 



1907 MicTutdh calva Baker, Can. Ent. 39:116. 



1908 Van Duzee, Stud. N. A. Memb., p. 53, 



1908 Micrutalis Illinoirnsis Van Duzee, Stud. N. A. Memb., p. 53. 



1909 Micrutalis calva ^'an Duzee, Flor. Hem., p. 206. 



1909 Smith, Ins. N. J., p. 91. 



1910 Matausch, Journ. N. Y. Ent. Soc. 18:167. 



1912 I^.latausch, Psyche 19:66. 



1913 Funkh., Horn. Wing Veins, fig. .«. 



1913 Branch, Kans. Univ. Sci. Bui. 8:103, figs. 20, 21, 82. 



1Q15 Micruialis Illinoiensis Aletcalf, Horn. No. Car., p. 6. 



1915 Micridalif! calva Metcalf, Hom. No. Car., p. 6. 



1916 Van Duzee, Check List Hem., p. .)(), no. 1()()5. 



Another more southern form that has l)een found once in th(^. Ijasin. 

 A single specimen was collected l)y the author from a young locust tree 

 {Rohinia pseudacaci(i) in August, 1911, in the bed of Six Mile Creek. 

 The species is easily distinguished by its ver}^ small size and shining black 

 prothorax. 



Technical descriptiun. — Very minute; one of the smallest species of Membracidae in the 

 United States; usually strongly marked with black altho color is variable; abdomen yellowish; 

 tegmina hyaline, veins very indistinct. 



Head broad, smooth, lightly punctate, not pubescent, upper third black, lower two-thirds 

 yellowish; eyes prominent, white or gray; ocelli not prominent, pearly, about equidistant 

 from each other and from the eyes and situated slightly above an imaginary line drawn 

 thru centers of eyes; clypeus rounded, continuing sinuate outline of inferior margin of face. 



Pronotum low, nearly flat, finely punctate, not pubescent, anterior part usually black, tip 

 of posterior proce-ss generally pale; posterior process stout, triangular, just reaching internal 

 angles of tegmina and not extending as far as tip of abdomen. 



Tegmina entirely hyaline, not punctate nor pubescent at base, veins indistinct, apical 

 border broad. Entire abdomen pale; undersurface of thorax often nuirked with black. 

 Femora black or ferruginous; tibiae fuscous, tarsi ferruginous. 



Length 3-3.5 mm.; width 1.5-1.7 mm. 



The genus CdrynoUt Fitch 



The two species of the genus Carynota rei)resent('d in this basin may be 

 separated by the fact that one (C. mera) is large and gray with a ti-ansverse 

 lateral band of black, while the other (C. jjorphyrea) is small and Ijrown 

 with a sprinkling of light ])oints on either side of the pronotum. 



IG. Carynota mera Say (Plate xxvi, 1-3) 



1831 Membracis mera Say, Jouni. Acad. Nat. Sci. Phila. 5:310. 



1851 Carynota mera Fitch, Cat. Ins. N. Y., p. 48. 



1851 Walk., List Hom. B. M., p. 1144. 



1854 Gargara majus Emm., N. Y. Agr. Rept. 5:156, pi. 13, fig. G. 



1856 Ophiderma mera Fitch, Rept. Ins. N. Y. 3:465. 



