Platydracus vicarius ( Sharp, 1889 )

Khilkovich, A. K. & Shabalin, S. A., 2023, REVIEW OF THE GENUS PLATYDRACUS (COLEOPTERA: STAPHYLINIDAE) FROM THE RUSSIAN FAR EAST, Far Eastern Entomologist 489, pp. 8-15 : 12-15

Platydracus vicarius ( Sharp, 1889)

Fig. 2

Staphylinus vicarius Sharp, 1889: 117. Type locality: “Nikko” [ Japan: Honshu] .

Staphylinus vicarius : Scheerpeltz, 1933: 1389; Wang et al., 2012: 90.

Staphylinus (Platydracus) vicarius : Tikhomirova, 1973: 187.

Platydracus vicarius : Shibata, 1985: 301; Herman, 2001: 3471; Cho & Ahn, 2009: 266.

Platydracus (Platydracus) vicarius : Smetana & Davies, 2000: 41; Smetana, 2004: 682; Shibata et al., 2013: 173; Schülke & Smetana, 2015: 1099; Cho, 2019: 71.

MATERIAL. Primorskii krai: Vladivostok, 4.VIII 1974, 1 specimen, L.D. Filatova [BC]; same locality, 14.VIII 1974, 1 specimen, L.D. Filatova [BC]; Dmitrievka, 22.IX.1983, 1 specimen, V.S. Arefin, L.A. Ivliev [BC]; Anuchinsky district, LZP-3 settlement, 11–15.IX 1978, Bakurov [BC]; Jewish Autonomous oblast: Obluchye , 26.VII 1974, O.N. Kabakov [BC] .

DISTRIBUTION. Russia (first record): Primorskii Krai, Khabarovskii krai. – Japan (Honshu), China (Liaoning), Korea (Ganhwon-do, Chungcheongbuk-do, Jeollabuk-do, Jeollanam-do, Gyeongsangbuk-do, Jeju-do) .

Key to Far Eastern species of the genus Platydracus (the poorly studied species P. sachalinensis is not included in the key)

1. Elytra brown-orange …………………..............…………………………….………..… 4

– Elytra black …………………………..............……………….….……...…………..…... 2

2. 6 visible sternite rounded without clipping …….............…….….......… Р. aureofasciatus

– 6 visible sternite with a distinct clipping ……………………….…..............………...…. 3

3. The head is almost square; its length is not less than the width. Tergites 6-7 of abdomen with dense white pubescence in basal portion ……..............................…….. P. inornatus

– The head is trapezoidal, wide (its length from the plat band to the back of the head is less than the width behind the eyes). Tergites 6-7 of abdomen without white pubescence, completely black bristles ……………….............................................…..... P. mortuorum

4. The front femur is a monochrome, dark ……….............……….…………….…………. 5

– The front femur if a bicolored, their basal part is darker than the apical …..............….... 6

5. Basal part of 6 abdominal tergite with a transverse site of light bristles …..…..…. ……………………………………………………………...............…….…... P. demissus

– Basal part of 6 abdominal tergite with evenly covered with dark bristles (fig. 2) ….....…. ………………………………………………………..…….................….….… P. vicarius

6. The temple is a same length as the eyes. The first segment of the antennae is shorter than the second and third combined ………...…….................................….…… P. ussuriensis

– The temple is a longer than the eyes. The first segment of the antennae is the same length as 2 and 3 combined ……………….................................……………..…... P. brevirornis

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Figures

Figs 1, 2. Habitus of Platydracus spp., dorsal view. 1 – P. inornatus; 2 – P. vicarius. Scale bars = 1 mm.