Phlaeopterus, Motschulsky, 1853

Shavrin, Alexey V., 2020, The Chinese species of the genus Phlaeopterus Motschulsky, 1853 (Coleoptera Staphylinidae: Omaliinae: Anthophagini), Zootaxa 4722 (4), pp. 395-400 : 396-397

Key to the Palaearctic species of Phlaeopterus

1 Pronotum slightly transverse, with irregular lateral crenulation. Elytra short, slightly longer than pronotum; wings reduced to short stubs. Forebody reddish-brown. Aedeagus as in Fig. 10 ( Shavrin & Mullen 2015). Body length: 4.00– 4.30 mm. Habitus as in Fig. 1 ( Shavrin & Mullen 2015). Russia: Eastern Siberia …....................................... P. czerskyi

- Pronotum distinctly transverse, with regular lateral crenulation. Elytra long, about twice as long as pronotum; wings fully developed. China ….................................................................................... 2

2 Lateral portions of pronotum with moderately small pits. Forebody reddish-brown to brown, sometimes with very indistinct spots on elytra. Aedeagus as in Fig. 7 . Body length: 3.75–4.20 mm. Habitus as in Fig. 1 . Gansu …................................................................................................... P. hromadkai Shavrin , sp.n.

- Lateral portions of pronotum with very large, markedly deeper pits. Coloration different, elytra with distinct pale spots on elytra … ................................................................................................. 3

3 Body reddish-brown to blackish-brown; elytra with two oblique yellow-brown or reddish-brown spots. Aedeagus as in Figs 20D-F ( Cheng et al. 2019). Body length: 3.73–3.90 mm. Habitus as in Fig. 17B ( Cheng et al. 2019). Shaanxi, Hebei ….......................................................................................... P. rufimarginatus

- Body reddish-brown; elytrae with five to seven yellow maculae ….............................................. 4

4 Elytrae with five moderately distinct maculae. Smaller: 3.82 mm. Habitus as in Fig. 3 ( Shavrin 2014). Guandong ….................................................................................................. P. ruzickai

- Elytrae with seven very distinct maculae. Larger: 4.95–5.00 mm. Habitus as in Fig. 4 ( Shavrin 2014). Shaanxi ….............................................................................................. P. septemmaculata

Figures

FIGURES 1–8. Phlaeopterus hromadkai: 1—habitus, 2—labrum (dorsal view), 3—left and right mandibles (dorsal view), 4—labium (dorsal view), 5—mentum (dorsal view), 6—left maxilla (dorsal view), 7—aedeagus (parameral view), 8—aedeagus (lateral view).