Biology of the Membra cidae of the Cayuga Lake Basin 263 



Is fairly common on the hills southeast of Ithaca but has never been 

 taken north of Six Mile Creek. Inhabits hickory, butternut, walnut, and 

 basswood, but eggs and nymphs have been found only on hickory, on 

 which host the life history of the insect has been worked out. 



This species is one of the most active of all the Telamonas and flies well. 



The striking colors of both sexes makes the species easy of recognition. 

 The females are a briUiant grass-green, while the males are yellow with 

 brown fascia. Both fade quickly in collections. Attempts have been 

 made to preserve the green color of the female but without success. 



Eggs laid during September hatch about the middle of May and reach 

 maturity the last of June. The males are much less numerous than the 

 females thruout the season. Mating has been observed thruout August 

 and September, and the nymphal periods have been found to average, 

 respectively, ten, six, five, ten, and fourteen days. 



A very fine stand of hickory, containing large numbers of this species, 

 is found in Station 0. 



Technical description. — Females large, brilliant uniform grass-green; males smaller, bright 

 yellow with deep brown fascia. Very striking in color; large size; crest high and square; 

 tegmina tipped with brown. 



Female: Head nearly twice as wide as long, green punctate with brown, finely pubescent; 

 eyes large, brown; ocelli large, orange, nearer to each other than to the eyes; clypeus deeply 

 punctate, pubescent, tip in a pointed extension. 



Pronotum concolorous green, fading to mottled yellow in cabinet specimens; very finely 

 punctate and pubescent; metopidium more or less angular, median carina distinct, three small 

 brown spots mesad of humeral angles; humeral angles produced, triangular, blunt; crest 

 large, high, much higher before than behind, anterior margin less sloping than posterior, 

 dorsal margin bro\\Tiish; posterior process long, gradually acute, apex brownish and not 

 reaching tips of tegmina. 



Tegmina brownish hj-aline, bases and costal regions pimctate with black, tips clouded 

 with dark brown, veins prominent. Undersurface of thorax flavous, abdomen yellowish, 

 pubescent, ovipositor brown. 'Legs flavous; tibiae mottled with brown; tarsi ferruginous. 



Length 11 mm.; width 6 mm. 



Male: Differs from female in size and color. Head mottled brown and yellow, much 

 darker than that of female, much sculptured, inferior line of face strongly sinuate. 



Pronotum bright yellow, metopidium strongly shaded with brown; dark brown fascia on front 

 of dorsal crest; dark brown fascia on posterior third of crest extending gradually narrowed 

 to lateral margin of pronotum; posterior median line of crest yellow, transverse band of 

 yellow behind crest; apex of posterior process brown. 



Undersurface of body deep brown. Legs flavous strongly marked with brown. 



Length 10 mm.; width 5 mm. 



36. Telamona pruinosa Ball 



1903 Telamona ■pruinosa Ball, Proc. Biol. Soc. Wash. 16:177, pi. 1, figs. 7-7b. 

 1914 Van Duzee, Trans. S. Diego Soc. Nat. Hi.st. 2»:o0. 



1916 Van Duzee, Check List Hem., p. 60, no. 1642. 



