Key to species of Allophrys occurring in Japan

1. Mesopleuron with fine but sharp and dense punctures on smooth and shining background (Fig. 1). Foveate groove deep and long, extending in anterior 0.8 of mesopleuron, coarsely crenulate (Figs 1, 2).......... matsumurai Khalaim, sp. nov., ♀♂

- Mesopleuron impunctate or with weak punctures centrally, granulate and dull. Foveate groove weak, usually extending in anterior half of mesopleuron, without or with very fine transverse wrinkles........................................... 2

2. Temple polished. Mandible with upper tooth somewhat longer (1.5×) than the lower tooth. Basal area of propodeum narrow, indistinct, rectangular (Fig. 14).................................................. takemotoi Khalaim, sp. nov., ♀

- Temple uniformly granulate, dull. Mandible with upper tooth much longer (2.5×) than the lower tooth. Basal area of propodeum broad, distinct, strongly widened anteriorly................................................ Allophrys sp., ♂