. Bulletin of the British Museum (Natural History) Entomology. . Figs 480-485 Berchmansus. 480,482,484,485, B. adumbratus; 481, 483, B. elegans. 480, fore wing (from Kimmins); 481, apex of 3 abdomen, lateral; 482, apex of 2 abdomen, lateral; 483, 6 genitalia, ventral; 484, 2 subgenitale, ventral; 485, 2 spermatheca, lateral. with extensive black markings; setae long, sparse; sternites with microtholi in 6; callus cerci rounded, trichobothria 23-33; sternites large; ectoprocts fused dorsally with slight apical invagi- nation; sternite 8+9 fused in 6; sternite 7 straight apically in 9; ectoproct
. Bulletin of the British Museum (Natural History) Entomology. . Figs 480-485 Berchmansus. 480,482,484,485, B. adumbratus; 481, 483, B. elegans. 480, fore wing (from Kimmins); 481, apex of 3 abdomen, lateral; 482, apex of 2 abdomen, lateral; 483, 6 genitalia, ventral; 484, 2 subgenitale, ventral; 485, 2 spermatheca, lateral. with extensive black markings; setae long, sparse; sternites with microtholi in 6; callus cerci rounded, trichobothria 23-33; sternites large; ectoprocts fused dorsally with slight apical invagi- nation; sternite 8+9 fused in 6; sternite 7 straight apically in 9; ectoproct and tergite 9 fused. Genitalia 8 (Fig. 483) (B. elegans only). Tignum, gonapsis, median plate and entoproces- sus absent; parameres absent; gonarcus long, narrow with short gonocornua; arcessus broad, short with apical tooth; additional arcuate struc- ture, sometimes with pair of median horns, situated below gonarcus, attached laterally to ectoproct; pseudopenis absent; gonosaccus, gono- cristae, spinellae absent. Genitalia 9 (Figs 484, 485). Praegenitale absent; subgenitale bilobed apically; spermatheca very broad or narrow; ventral impression very deep; vela moderate or very long, highly coiled or simply curved; duct long, coiled. REMARKS. Berchmansus can be distinguished from all other chrysopid genera by the position of the basal radial crossvein which leaves the radius before the origin of Rs, and by the arcuate structure, situated ventrad of the gonarcus complex, in the male genitalia. The two species examined in this study (B. adumbratus Navas and B. elegans Guerin) differ considerably in many respects as noted in the generic description. Unfortunately, it has not been possible to examine a male of B. adumbratus so it is unclear at present which characters in the male genitalia are of generic significance. Until the male of adumbratus is described it seems reasonable to group the species in the same genus on the basis of the. Please note that these images are extracted
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