542 



JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 8 



Idiocerus gemmisimidans new species. 



Female. Length, 7 mm. Vertex yellowish with a dark brownish irregular line 

 connecting the eyes along the crest; the usual spots on the vertex indicated by two 

 small more or less indistinct brownish dots; vertex mottled with brownish, especially 

 at the inner upper angle of the eye and in the center where it is more or less bluish in 

 certain Ughts. In the darker specimens a broken irregular dark brownish pro- 

 curved line connects the antennae. OceUi situated on dark brownish spots. Face 

 pale yellowish. Sculpture of vertex finely, transversely rugulose. Basal segment of 

 antennae yellowish, second segment blackish, remainder yellowish to dark brownish. 

 Prothorax with bronzy reflections, brownish, sometimes mottled with bluish, 

 transversely rugulose; sculpture more pronounced than on the vertex. Scutellum 

 brownish, paler behind, rugulose in front of the depressions and transversely striate 

 behind. Wings pale brownish, veins with akernating dark brown and white por- 

 tions. When the wings are at rest the following white portions of the veins are most 

 conspicuous: terminal portion of 2d A (which when the wings are closed makes in 

 combination with the white vein on the opposite wing a conspicuous V-shaped mark) ; 

 a section near the base of Cu opposite the fork of R; the fork of R; and the junction 

 of Cu2 and 1st A. Legs brownish yeUow; tibiae with a more or less distinct dark 

 brownish stripe extending along the basal half of the outer edge. Claws blackish. 

 Ventral aspect of insect yellowish. 



Male (PI. 30, Fig. 6). Length, 6 mm. Coloration of head similar to that of fe- 

 male. Prothorax shghtly more grayish with two irregular blackish spots in center 

 and one on either side on posterior border. Scutellum yellowish brown with a 

 blackish bar in front notched in the center behind, and nearly interrupted by two 

 large areas of the ground color; behind this bar are two small blackish spots. Mem- 

 brane of wings for the most part pale brownish, more pronounced at tip, veins "with 

 alternating whitish and dark brownish or blackish portions. The extent of the dark 

 brownish portions on the wings varies to a considerable extent but is often as shown 

 in PI. 31, Fig. 10. The markings on the wings are more distinct than in female. 

 Antennae and legs similar to those of the female. Antennae without discs. Face 

 of the male (PI. 31, Fig. 9) similar to that of female. In the Hghter specimens the 

 motthng on the vertex, which in the darker specimens often forms a more or less dis- 

 tinct band connecting the eyes, is very faint, and the procurved line connecting the 

 antennae lacking. 



Egg (PI. 30, Fig. 7). Length, 1.36 mm., width, .4 mm., bluntly rounded at poste- 

 rior end, tapering gradually to anterior end which is obhquely truncate and provided 

 with a dark brownish cap; pale translucent, shiny; chorion finely punctate. . 



The eggs (PI. 31, Fig. 8) are inserted in groups of five to ten, eight being a common 

 number, just under the bark of the green twigs, usually just above a bud. The 

 eggs He flat in a more or less curved row under a thin flap of bark which soon turns 

 brown. 



Nymphs. 



Stage I (PI. 30, Fig. 1). Length, 1.29 mm., width of head including eyes, .63 mm. 

 General color shining dark brown or black. Head with a narrow yellowish median 

 fine. Thorax with a broader yellowish median line of varying width. First and 

 second abdominal segments yellowish; the latter brownish laterally. Eyes reddish. 

 Antennae pale yellowish, except basal segment which is black. Coxae, trochanters 

 and extreme base of femora pale yellowish; remainder of femora and basal half of 

 tibiae dark brownish or blackish; terminal half of tibiae and first tarsal segment pale 

 yellowish; whole of second segment of fore tarsi, and tip of second segment of middle 

 and hind tarsi, blackish; claws blackish. 



