| number of long macrosetae on pygidium | two longer (Fig. 12) or shorter (Fig. 13) macrosetae | two (Fig. 9) or four (Fig. 10) long macrosetae; outer pair shorter |
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| shape of eroded, deeply indented surface above long macrosetae on pygidium | one area, shaped more or less like a bull’s-horn scalp (Figs 12, 13) | very large, ocellate one (Fig. 10) to two egg-shaped areas on each side (Fig. 9) |
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| body length | 3.0–4.6 mm | 2.9–3.6 mm |
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| macrosetation of basal edge of genae | denser, macrosetae longer than tarsomere 2 of protibiae (Fig. 7) | much sparser, macrosetae much shorter than tarsomere 2 of protibiae (Fig. 8) |
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| epipharynx | somewhat less transverse (Fig. 16) | somewhat more transverse (Fig. 15) |
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| aedeagus | somewhat plumper in lateral view (Fig. 14) | somewhat thinner in lateral view (Fig. 11) |
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