. Bulletin of the British Museum (Natural History) Entomology. 262 S. J. BROOKS & P. C. BARNARD. Figs 567-572 Triplochrysapallida. 567, fore wing (from Kimmins); 568, apex of 2 abdomen, lateral; 569, apex of 2 abdomen, lateral; 570, 6* genitalia, dorsal; 571, 9 spermatheca, lateral; 572, 2 subgenitale, ventral. membrane. This is a plesiomorphic condition which occurs widely throughout the Neuroptera ( Hemerobiidae and Myrmeleonidae). Pamochrysa, Kimochrysa and Pimachrysa plesiomorphically retain a suture completely separating tergite 9 and the ectoprocts in males. Biology. Unknown. Pol
. Bulletin of the British Museum (Natural History) Entomology. 262 S. J. BROOKS & P. C. BARNARD. Figs 567-572 Triplochrysapallida. 567, fore wing (from Kimmins); 568, apex of 2 abdomen, lateral; 569, apex of 2 abdomen, lateral; 570, 6* genitalia, dorsal; 571, 9 spermatheca, lateral; 572, 2 subgenitale, ventral. membrane. This is a plesiomorphic condition which occurs widely throughout the Neuroptera ( Hemerobiidae and Myrmeleonidae). Pamochrysa, Kimochrysa and Pimachrysa plesiomorphically retain a suture completely separating tergite 9 and the ectoprocts in males. Biology. Unknown. Pollen grains were present in the guts of adults examined during this study and Tjeder (1966) identified Dipsacacae and Compositae pollen grains in the gut contents of specimens that he examined. Genus PIMACHRYSA Adams Pimachrysa Adams, 1956: 67. Type species: Pimachrysa grata Adams, by original designation. Distribution. Five species are known from western and northern Mexico. Diagnosis. Adult. Small lacewings, fore wing (Fig. 561) 7-10 mm; ground colour brown. Head marked with brown stripes on labrum, clypeus, frons, vertex, scape; palps broad, rounded apic- ally; labrum with straight apical margin; vertex domed; toruli large; head width : eye width = : 1, eyes very small; antenna, pale brown, shorter or same length as fore wing; flagellar segments 3 times as long as broad; setae arranged in 6 rings. Pronotum marked with brown lateral stripe; dorsal setae very short, few; meso- and metanotum with brown lateral stripe. Legs with short, black setae; claws without basal dilation. Fore wing narrow (length : breadth = :1); unmarked; costal area narrow at base; costal setae short, inclined; stigma marked with brown spot on each crossvein; Sc long or short; Sc and R widely separated; basal Sc crossvein mm; im long, quadrangular; Rs straight; m2 very long; radial crossveins straight; gradates in two parallel series; crossveins not crassate in 6; c2 up to
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