Biology of the Membkacidae op^ the Cayuga Lake Basin 285 



The largest and coininonest species of Ophitlenna in the basin. Fouiul 

 on oaks. Xery active and extremely difficult to study in the field. The 

 life history is not known. 



Technical description. — Large brown species; dorsum rounded and very pubescent with 

 short, black, bristly hairs; posterior process short, suddenly acute, not reaching apices of 

 tegmina; tegmina hyaline, bases and costal areas strongl.y punctate, tips clouded with fuscous, 

 veins very prominentj underpart of body dark; males smaller and darker than females. 



Head broader than long, yellow, feebly punctate, very hairy; base slightly, uniformly 

 curved; eyes large, brown; ocelli prominent, red, nearer to each other than to the eyes; inferior 

 margin of face sinuate; clypeus yellow with two vertical stripes of red; base hairy. 



Pronotum coarsely punctate, densely pubescent, brown mottled with green; dorsum 

 rounded, slightly depressed behind middle, lateral margin curved downward at middle; 

 posterior process short, suddenly acute, not reaching tips of tegmina. 



Tegmina smoky hyaline, veins very prominent, nearly all of basal half below pronotum 

 strongly punctate, tips clouded with fuscous; hind wings iridescent. Undersurface of head 

 and thorax fuscous; abdomen flavous. Femora and tibiae strongly marked with dark 

 brown. 



Length 7.6 mm.; width 3.2 mm. 



56. Ophidenna pubescens Emmons (Plate xxviii, 16, and Plate xxix, 4) 



1854 Gargara pubescens Emm., N. Y. Agr. Rept. 5:157, pi. 13, fig. 2. 

 1908 Ophiderma pubescens Van Duzee. Stud. N. A. Memb., p. 99. 

 1913 Funkh., Hom. Wing Veins, figs. 46, 68. 



1916 Van Duzee, Check List Hem., p. 61, no. 1701. 



A small and very haify species, very abundant in all parts of the basin. 

 It is common on oak early in the season. The nymphs appear in April 

 and may be taken until July. Like those of the preceding species, the 

 insects show great activity and are not often taken in general col- 

 lecting. 



Technical description. — Small, light brown mottled with white; dorsum convex, hairy; 

 posterior process short and blunt, not reaching tips of tegmina; tegmina hyaline with median 

 black stripe and cloud of brown on tips; undersurface of body flavous; femora strongly marked 

 with black; males smaller and darker than females. 



Head broader than long, yellow tinged with red and punctate with brown, sculptured, 

 convex; base sinuate; eyes prominent, grayish; ocelli protruding, transparent, about 

 equidistant from each other and from the eyes; clypeus extending below inferior margin 

 of face, feebly trilobed, two vertical stripes of red, tip hairy. 



Pronotum closely and finely punctate, densely pubescent, light brown with broad pale 

 stripe down center of metopidium, middle of this stripe dark brown, semicircular white stripe 

 behind humeral angles and another before base of posterior process, these stripes sometimes 

 bordered with darker; humeral angles not prominent; metopidium convex; dorsum convex, 

 very sUghtly depressed behind middle; posterior process short, suddenly acute, extending 

 as far as bases of apical cells of tegmina. 



Tegmina mottled, basal fifth of each brown and punctate, behind this an opaque yellow, 

 punctate, transverse band, this followed by a transverse black band, apical two-fifths hyaline ; 

 tips clouded with fuscous. Undersurface of body flavous. Legs flavous, femora strongly 

 marked with black. 



Length 6 mm.; width 2.5 mm. 



