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).