Phymatocera, Dahlbom, 1835

Key for distinguishing Phymatocera from other Japanese genera of Blennocampinae (excluding former Heterarthrinae)

1 All tarsi with plantar lobe on tarsomeres 1–4 ( Fig. 3A View FIGURE 3 ); in Onychostethomostus, fore and middle tarsi with plantar lobe on tarsomeres 1–4, but hind tarsus with plantar lobe only on tarsomere 4 ( Fig. 3B, C View FIGURE 3 ).................................. 2

- All tarsi with plantar lobe only on tarsomeres 3 and 4 ( Fig. 3D View FIGURE 3 ).............................. Esehabachia , Halidamia

2(1) In fore wing, proximal part of vein 2A+3A usually distally separated from vein 1A ( Fig. 4A–D View FIGURE 4 ), if fused with vein 1A or very close to it ( Fig. 4B, E View FIGURE 4 ), cell 1A about 1/2 as long as cell 2A ( Fig. 4E View FIGURE 4 ) or epicnemium present ( Fig. 4G, I View FIGURE 4 )................ 3

- In fore wing, proximal part of vein 2A+3A distally fused with vein 1A and cell 1A about 3/4 or more as long as cell 2A ( Fig. 4F View FIGURE 4 ). Epicnemium absent ( Fig. 4H View FIGURE 4 )............................................................ Hoplocampoides

3(2) Fore wing with proximal part of vein 2A+3A not sinuate ( Fig. 4A, C–E View FIGURE 4 ). If epicnemium present, epicnemial groove wide depression formed by elevation of epicnemium and usually seamlessly fused with anterior marginal ridge ( Fig. 4G View FIGURE 4 ). In some species, either epicnemium or anterior marginal ridge, or both absent............................................. 4

- Fore wing with proximal part of vein 2A+3A sinuate ( Fig. 4B View FIGURE 4 ), but often distally faint. Epicnemium present, with epicnemial groove linear, and completely separated from anterior marginal ridge ( Fig. 4I View FIGURE 4 )............................ Tomostethus View in CoL

4(3) In fore wing, section of vein M between its junctions with vein Rs and crossvein 1m-cu shorter than 1/2 vein Rs+M ( Fig. 4A View FIGURE 4 ); proximal part of vein 2A+3A simple and straight. Flagellomere 2 0.4–0.5 × flagellomere 1 in dorsal length.... Nipponocampa

- In fore wing, section of vein M between its junctions of vein Rs and crossvein 1m-cu longer than 1/2 vein Rs+M ( Fig. 4B, F View FIGURE 4 ); proximal part of vein 2A+3A of fore wing various ( Fig. 4C–E View FIGURE 4 ). Flagellomere 2 usually more than 0.5 × flagellomere 1 in dorsal length............................................................................................... 5

5(4) Dorsal tentorial pit widely and deeply open ventrally ( Fig. 5A–C View FIGURE 5 ). Proximal part of vein 2A+3A of fore wing various ( Fig. 4A, C–E View FIGURE 4 ). Epicnemium present or absent ( Fig. 4G, H View FIGURE 4 )............................................................ 6

- Dorsal tentorial pit isolated ( Fig. 5D View FIGURE 5 ) or shallowly or narrowly and shallowly open ventrally ( Fig. 5E, F View FIGURE 5 ). Proximal part of vein 2A+3A of fore wing distally curved anteriorly ( Fig. 4C View FIGURE 4 ), rarely straight ( Fig. 4A View FIGURE 4 ). Epicnemium absent ( Fig. 4H View FIGURE 4 )................................................................... Apareophora , Ardis , Monardis , Pareophora , Periclista