. Brigham Young University science bulletin. Biology -- Periodicals. 158 Brigham Young University Science Bulletin Genus Pilophoropsis Poppius Key to the Species 1. Scutellum with silvery scalelike hairs 2 Scutellum without silvery scalelike hairs; ( 9 ) pronotum one-fourth longer than broad at base brachypterus Popp. 2. Clavus with four transverse silver spots on apical half; ( $ ) pronotum length scarcely equal to width at base; male claspers distinctive (Fig. 237) nicholi (Kngt.) Clavus with two transverse silver spots on apical half; male claspers distinctive (Fig. 238) balli, n. sp. Pilop
. Brigham Young University science bulletin. Biology -- Periodicals. 158 Brigham Young University Science Bulletin Genus Pilophoropsis Poppius Key to the Species 1. Scutellum with silvery scalelike hairs 2 Scutellum without silvery scalelike hairs; ( 9 ) pronotum one-fourth longer than broad at base brachypterus Popp. 2. Clavus with four transverse silver spots on apical half; ( $ ) pronotum length scarcely equal to width at base; male claspers distinctive (Fig. 237) nicholi (Kngt.) Clavus with two transverse silver spots on apical half; male claspers distinctive (Fig. 238) balli, n. sp. Pilophoropsis balli, new species Fig. 238 Closely related to nicholi (Kngt.), but dif- fers in placement of silvery, scalelike bands on hemelytra as shown in the key; also differs in structure of male genital segment and claspers (Fig. 238). Male. Length mm, width mm. Head: width .78 mm, vertex .30 mm; base of clypeus barely visible as seen from above; eyes only slightly elevated above surface of vertex, sharp basal edge of vertex and posterior edge of eyes form an arcuate line, with eyes extending back slightly over anterior angles of pronotum. An- tennae: segment I, length .20 mm, yellowish brown, a red spot at base; II, .61 mm, cylin- drical, at base more slender than segment I, but tapering gradually to thicker (.08 mm) on apex, yellowish brown, clothed with fine, short yel- lowish pubescence; III, .36 mm, thickness .08 mm, equal to segment II on apex, slightly more slender on base, brownish; IV, .34 mm, thick- ness equal to segment III, brownish. Rostrum, length mm, reaching to near posterior margin of mesosternum, yellowish. Pronotum, length .76 mm, width at base 'mm; disk strongly convex, sloping in all directions from the central high point; lateral margins rounded, slightly sulcate as viewed from above; moderately shin- ing, finely and sparsely pubescent, calli indi- cated by a slightly granulated surface; basal margin forming a broadly arcuate line, covering
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