Atheta (Alaobia) ventricosa Bernhauer, 1907

Gusarov, Vladimir I., 2003, Revision of some types of North American aleocharines (Coleoptera: Staphylinidae: Aleocharinae), with synonymic notes, Zootaxa 353 (1), pp. 1-134 : 61-64

Atheta (Alaobia) ventricosa Bernhauer, 1907

( Figs. 81–92 )

Atheta (s. str.) sodalis: Bernhauer, 1907: 391 (misidentification).

Atheta (s. str.) ventricosa Bernhauer, 1907: 391 .

Atheta (s. str.) mollicula Casey, 1910a: 37 , syn. nov.

Sableta (Canastota) phrenetica Casey, 1910a: 111 , syn. nov.

Atheta (Delphota) callens Casey, 1911a: 87 , syn. nov.

Atheta (s. str.) franklini Casey, 1911a: 89 , syn. nov.

Atheta (s. str.) postulans Casey, 1911a: 90 , syn. nov.

Atheta (s. str.) ventricosa: Fenyes, 1920: 213 (as valid species).

Atheta (s. str.) mollicula: Fenyes, 1920: 214 (as valid species).

Atheta (Sableta) phrenetica: Fenyes, 1920: 221 (as valid species).

Atheta (s. str.) callens: Fenyes, 1920: 215 (as valid species).

Atheta (s. str.) franklini: Fenyes, 1920: 214 (as valid species).

Atheta (s. str.) postulans: Fenyes, 1920: 214 (as valid species).

Atheta (s. str.) ventricosa: Bernhauer & Scheerpeltz, 1926: 651 (as valid species).

Atheta (s. str.) mollicula: Bernhauer & Scheerpeltz, 1926: 645 (as valid species).

Atheta (Sableta) phrenetica: Bernhauer & Scheerpeltz, 1926: 666 (as valid species).

Atheta (s. str.) callens: Bernhauer & Scheerpeltz, 1926: 639 (as valid species).

Atheta (s. str.) franklini: Bernhauer & Scheerpeltz, 1926: 643 (as valid species).

Atheta (s. str.) postulans: Bernhauer & Scheerpeltz, 1926: 648 (as valid species).

Atheta (s. str.) ventricosa: Moore & Legner, 1975: 377 (as valid species).

Atheta (s. str.) mollicula: Moore & Legner, 1975: 366 (as valid species).

Atheta (Sableta) phrenetica: Moore & Legner, 1975: 370 (as valid species; misspelled as phenetica).

Atheta (s. str.) callens: Moore & Legner, 1975: 356 (as valid species).

Atheta (s. str.) franklini: Moore & Legner, 1975: 361 (as valid species).

Atheta (s. str.) postulans: Moore & Legner, 1975: 370 (as valid species).

Xenota ventricosa: Seevers, 1978: 269 (as valid species).

Xenota mollicula: Seevers, 1978: 270 (as valid species).

Canastota phrenetica: Seevers, 1978: 258 (as valid species).

Xenota callens: Seevers, 1978: 268 (as valid species).

Xenota franklini: Seevers, 1978: 268 (as valid species).

Xenota postulans: Seevers, 1978: 271 (as valid species).

Type material. Lectotype of Atheta ventricosa (here designated): ♀, “ Mt. Arlngtn [Mount Arlington] N.[ew] J.[ersey]”, “Sept.”, white circle, “ pedicularis Melsh.? v. Fenyes det. Bernhauer ”, “ ventricosa Brh. Typus”, “Chicago NHMus M.Bernhauer Collection ” . Paralectotypes: ♀, “Ithaca, N.[ew] Y.[ork] Wickham”, “129.”, “ ventricosa Brh. Cotypus ” (yellow label), “Chicago NHMus M.Bernhauer Collection ” ; ♀ (had been mounted on the same card as the lectotype), “ Mt. Arlngtn [Arlington] N.[ew] J.[ersey]”, “Sept.”, white circle, “ pedicularis Melsh.? v. Fenyes det. Bernhauer ”, “ ventricosa Brh. Typus”, “Chicago NHMus M.Bernhauer Collection ” ; ♂, “ Blue Ridge Mts. 9­04 [ix.1904?] N.[orth] C.[arolina]”, “ Beyer ”, “ ventricosa Brh. Cotypus ” (yellow label), “ Chicago NHMus M.Bernhauer Collection ”; 1 destroyed specimen with only metatrochanters remaining, “ Blue Ridge Mts. 9­04 [ix.1904?] N.[orth] C.[arolina]”, “Beyer”, “128”, “ ventricosa Brh. Cotypus ” (yellow label), “Chicago NHMus M.Bernhauer Collection ” ( FMNH) .

Lectotype of Atheta mollicula (here designated): ♂, “Metlakatla B.[ritish] Col.[umbia] Keen”, “ Atheta mollicula Csy. ”, “TYPE USNM 39266” (red label), “CASEY bequest 1925” ( NMNH) . Paralectotypes: 2♀♀, “Metlakatla B.[ritish] Col.[umbia] Keen”, “ mollicula PARATYPE USNM 39266” (red label), “CASEY bequest 1925” ( NMNH) .

Lectotype of Sableta phrenetica (here designated): ♂, “Metlakatla B.[ritish] Col.[umbia] Keen”, “ phrenetica Csy. ”, “TYPE USNM 39140” (red label), “CASEY bequest 1925” ( NMNH).

Lectotype of Atheta callens (here designated): ♀, “D.[istrict of] C.[olumbia]”, “ callens Csy. ”, “TYPE USNM 39491” (red label), “CASEY bequest 1925” ( NMNH).

Lectotype of Atheta franklini (here designated): ♀, “Buena Vista Spg. [Springs] Franklin Co. Pa. [Pennsylvania]”, “ Ath. franklini Csy. ”, “TYPE USNM 39314” (red label), “CASEY bequest 1925” ( NMNH) . Paralectotypes: 3♀♀, “Buena Vista Spg. [Springs] Franklin Co. Pa. [Pennsylvania]”, “ franklini PARATYPE USNM 39314” (red label), “CASEY bequest 1925” ( NMNH) .

Lectotype of Atheta postulans (here designated): ♀, “Metlakatla B.[ritish] Col.[umbia] Keen”, “ postulans Csy. ”, “TYPE USNM 39307” (red label), “CASEY bequest 1925” ( NMNH) . Paralectotypes: 2♀♀, “Metlakatla B.[ritish] Col.[umbia] Keen”, “ postulans PARATYPE USNM 39307” (red label), “CASEY bequest 1925” ( NMNH) .

Additional material. UNITED STATES: Alaska: ♀, 16 km NW Lituya Bay, pitfalls in hemlock forest, 15 m, vi­ix[.1977] (D.Mann); 3 specimens, 10 km SE Lituya Bay, pitfalls in hemlock forest, 35 m, vi­ 4.ix.1977 (D.Mann); 7 specimens, 16 km NW of Lituya Bay, pitfalls in edge of spruce forest, 10 m, vi­ 4.ix.1977 (D.Mann); ♂, Baranof Is., 5 mi. ESE of Sitka, 19.vii.1980 (L.Herman); 3♂♂, Baranof Island, NNE of Sitka, Indian River, 20.vii.1980 (L.Herman) ( AMNH); New York: Orange Co.: ♂, ♀, 5 specimens, 8 km S New Windsor, Black Rock Forest, 23–25.v.1998 (V.I.Gusarov) ( SPSU); Vermont: Windsor Co.: ♂, ♀, 3 specimens, 8 km SEE Springfield, Hwy. I­91, 43º14.00'N 72º26.81'W, 250 m, in forest litter, Acer , Betula , Tsuga , Quercus , 21.ix.1998 (V.I.Gusarov) ( SPSU); CANADA: New Brunswick: Sunbury Co.: ♂, Acadia Research Forest, pitfall trap, 28.vii.1999 (G.Gesner); ♀, ditto but 21.vii.1999 ( SPSU); Ontario: ♂, 74 km NWW Sault Ste. Marie, Hwy. 17, slope facing Lake Superior, 47º09.61'N 84º41.90'W, 80 m, in forest litter, Betula , Picea , Populus , Acer , Pinus , 11.vii.1999 (V.I.Gusarov) ( SPSU).

Diagnosis. Atheta ventricosa is very similar to At. sodalis ( Erichson, 1837) but differs in the shape of the aedeagus ( Figs. 85–88 , 90–92 ) (particularly the apex of the median lobe ( Figs. 85–86 ) and the sclerites of the internal sac ( Figs. 90–92 )), and the posterior margin of the male tergum 8 ( Fig. 81 ).

Discussion. The types of At. ventricosa , At. mollicula , Sa. phrenetica , At. callens , At. franklini and At. postulans are similar in external characters and the shape of the aedeagus and spermatheca. All these names are considered to be synonyms.

Distribution. Atheta ventricosa is a widespread species but its distribution is poorly documented. It is known from the United States (Alaska, Vermont, New York, New Jersey, Pennsylvania, District of Columbia and North Carolina) and Canada (British Columbia, Ontario and New Brunswick).

Figures

FIGURES 81–84. Abdominal segment 8 of Atheta ventricosa Bernhauer (male, Baranof Island, Alaska (81–82); and female, Metlakatla, British Columbia (83–84)). 81 — male tergum 8; 82 — male sternum 8; 83 — female tergum 8; 84 — female sternum 8. Scale bar 0.2 mm.

FIGURES 85–88. Aedeagus of Atheta ventricosa Bernhauer (male, Baranof Island, Alaska). 85 — median lobe, parameral view; 86 — apex of median lobe, parameral view; 87 — median lobe, lateral view; 88 — apex of median lobe, lateral view. Scale bar 0.1 mm (86, 88), 0.2 mm (85, 87).

FIGURES 89–92. Genitalia of Atheta ventricosa Bernhauer (female, Lituya Bay, Alaska (89); male, Baranof Island, Alaska (90–92)). 89 — spermatheca; 90 — apex of median lobe with partially everted internal sac, parameral view; 91 — apex of median lobe with partially everted internal sac, abparameral view; 92 — apex of median lobe with partially everted internal sac, lateral view. Scale bar 0.1 mm (90–92), 0.2 mm (89).