Placusa vaga Casey, 1911a

Gusarov, Vladimir I., 2003, Revision of some types of North American aleocharines (Coleoptera: Staphylinidae: Aleocharinae), with synonymic notes, Zootaxa 353 (1), pp. 1-134 : 119-120

Placusa vaga Casey, 1911a

( Figs. 8 , 16 , 24 , 31 , 47–49 , 76– 78 in Klimaszewski et al. 2001)

Placusa vaga Casey, 1911a: 189 .

Pseudota cornicula Casey, 1911a: 151 , syn. nov.

Placusa (Calpusa) vaga: Bernhauer & Scheerpeltz, 1926: 544 (as valid species).

Atheta (Pancota) cornicula: Bernhauer & Scheerpeltz, 1926: 661 (as valid species).

Placusa vaga: Klimaszewski et al., 2001: 27 (as valid species).

Type material. Holotype of Placusa vaga : ♀, “ Sta. Cruz Mts. Cal.[ifornia]”, “ vaga Csy. ”, “TYPE USNM 39576” (red label), “CASEY bequest 1925” ( NMNH).

Holotype of Pseudota cornicula : ♀, “Metlakatla, B.[ritish] Col.[umbia] Keen”, “ cornicula Csy. ”, “TYPE USNM 39161” (red label), “CASEY bequest 1925” ( NMNH).

Diagnosis. See Klimaszewski et al. (2001).

Discussion. The holotype of Ps. cornicula agrees with the lectotype of Pl. vaga in external characters and in the shape of the spermatheca. Casey (1911a) admitted that he was unable to examine the tarsal formula of the holotype of Ps. cornicula (it is in fact 4­4­ 5). This may explain why he failed to recognize that the species belonged to Placusa (tribe Placusini ).

Distribution. Placusa vaga is known from British Columbia and California.

Figures

FIGURES 5–9. Genitalia of Tinotus acerbus (Casey) (lectotype of Acrimea acerba (5–8) and lectotype of Acri. resecta (9)). 5 — median lobe, parameral view; 6 — median lobe with details of retracted internal sac, abparameral view; 7 — median lobe, lateral view; 8 — median lobe with details of retracted internal sac, lateral view; 9 — spermatheca. Scale bar 0.1 mm (9), 0.2 mm (5– 8).

FIGURES 15–18. Genitalia of Oxypoda amica Casey (male, lectotype of O. amica (15–17); and female from 2.5 km N Lawrence (18)). 15 — median lobe, parameral view; 16 — median lobe with details of retracted internal sac, lateral view; 17 — median lobe with details of retracted internal sac, abparameral view; 18 — spermatheca. Scale bar 0.1 mm (18), 0.2 mm (15–17).

FIGURES 23–30. Genitalia of Paradilacra densissima (Bernhauer) (male, lectotype of Pa. persola Casey (23–28); female, lectotype of Pa. memnonia Casey (29); and female, lectotype of Pa. deserticola Casey (30)). 23 — median lobe, parameral view; 24 — apex of median lobe, parameral view; 25 — median lobe, lateral view; 26 — apex of median lobe, lateral view; 27 — apex of median lobe with details of retracted internal sac, parameral view; 28 — apex of median lobe with details of retracted internal sac, lateral view; 29–30 — spermatheca. Scale bar 0.1 mm (24, 26, 29– 30), 0.2 mm (23, 25, 27–28).

FIGURES 31–35. Abdominal segment 8 of Atheta aemula (Erichson) (male (31–33) and female (34–35), 1.5–2.5 km N Lawrence, Kansas). 31 — male tergum 8; 32 — male sternum 8; 33 — apex of male tergum 8; 34 — female tergum 8; 35 — female sternum 8. Scale bar 0.2 mm (33), 0.4 mm (31–32, 34–35).

FIGURES 47–51. Abdominal segment 8 of Atheta fenyesi Bernhauer (male, lectotype of Dimetrota vigilans Casey (47, 49); male, lectotype of At. querula Casey (48); and female, paralectotype of At. fenyesi (50–51)). 47 — male tergum 8; 48 — male sternum 8; 49 — apex of male tergum 8; 50 — female tergum 8; 51 — female sternum 8. Scale bar 0.2 mm (49), 0.4 mm (47–48, 50–51).

FIGURES 75–80. Genitalia of Atheta frosti Bernhauer (male, lectotype of At. modiella Casey (75– 79); and female, lectotype of At. frosti (80)). 75 — median lobe, parameral view; 76 — median lobe, lateral view; 77 — apex of median lobe, parameral view; 78 — apex of median lobe, lateral view; 79 — median lobe with retracted internal sac, abparameral view; 80 — spermatheca. Scale bar 0.1 mm (77–80), 0.2 mm (75–76).