Biology of the Membra cidae of the Cayuga Lake Basin 277 



\cry i-ai(!. \'au Duzce's paratypes in the Cornell collection, and a 

 small series taken by the author in July, 1914, arc the only records. 



Technical description. — Near preceding species in appearance, but larger and with tegmina 

 strongly colored wath reddish brown and marked with darker; pronotum low; postenor 

 process short. 



Head gray-green deeply punctate with black, areas next to eyes black; base nearly straight; 

 eyes large, gray; oceih large, red, prominent, about equidistant from each other and from 

 the eyes; clypeus long, extending below inferior margin of face. 



Pronotiun deeply and closely punctate, sparingly pubescent, green-gray tinged with 

 reddish; metopidium convex, median carina distinct, large brown fascia above each eye; 

 dorsal crest very low, median spot pale; anterior transverse line pale bordered with brown; 

 similar line before base of posterior process; posterior process short, blunt, not reaching 

 apices of tegmina. 



Tegmina deep red-brown, semiopaque, darker brown spot at middle and at tip of each, 

 bases punctate. Undersurface of thorax red-brown; abdomen flavous. Legs ferruginous. 



Length 6 mm.; width 2.4 mm. 



The subgenus Atyi)i)ut Stal 



The subgenus Atjanna of the genus Cyrtolobus has been set off to 

 include those forms in which the pronotum is highest at the anterior 

 extremity. The character, while entirely superficial, is valuable for 

 convenience in separating the species of this confusing group. 



The three species represented in the ]:)asin may be separated as follows: 



a. Species large, 7-9 mm castaneae 



aa. Species small, 5-6 mm. 



b. Pronotum punctate; female green, male black with broken yellow dorsal 



stripe querci 



bb. Pronotum smooth; both sexes green inornala 



50. Atymna castaneae Fitch (Plate xxviii, 11, 12) 



1851 Smilia castaneae Fitch, Cat. Ins. N. Y., p. 49. 



1851 Thelia castaneae Walk., List Horn. B. M., p. 1143. 



1854 Gargara nigricephala Emna., N. Y. Agr. Rept. 5: 157, pi. 13, fig. 5. 



1854 Gargara viridis Enmi., X. Y. Agr. Rept. 5: 154, pi. 3, fig. 13. 



1856 Smilia castaneae Fitch, Rept. Ins. N. Y. 3:470. 



1856 Fitch, Trans. N. Y. Agr. Soc. 16:470. 



1858 Walk.. List Hom. B. M. Suppl., p. 133. 



1867 Atymna cas'aneae Stal, Ofv. Kongl. Vet. Akad. Forh. 24:551. 



1869 Stnilia castaneae Rathvon, Momb. Hist. Lane. Co. Pa., p. 551. 



1890 Atymna castaneae Van Duzee, Psyche 5 : 390. 



1890 Smilia castaneae Packard, Ins. Inj. For. and Shade Trees, p. 350. 



1890 Ophigenna nigrocephala Smith, Ins. N. J., p. 442. 



1892 Atymna castaneae Harring, Ottawa Nat. 6:30. 



1894 Godg., Cat. Memb. N. A., p. 4.35. 



1894 Ophiderma nigricephala Godg., Cat. Memb. N. .\., p. 440. 



1896 Atymna castaneae Fowler, B. C. A., d. 140. 



1903 Buckt., Mon. Memb., p. 194, 218. 



1903 Atymna lineata Buckt., Mon. Memb., p. 194, pi. 42, fig. 6. 



