Aleochara prisca Sharp, 1876

Caron, Edilson, Moussallem, Marcelo & Bortoluzzi, Sidnei, 2019, Revision of Brazilian species of Aleochara Gravenhorst of the subgenus Aleochara (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 4712 (1), pp. 1-33 : 10-13

Aleochara prisca Sharp, 1876

( Figs. 3 , 26–34 , 75 )

Aleochara prisca Sharp 1876: 69 (Description, type locality: “Ega”), note: Ega is currently known as Tefé, a municipality in Amazonas, Brazil. Duvivier 1883: 100 (catalogue). Bernhauer & Sheerpeltz 1926: 778 (catalogue). Blackwelder 1944: 167 (checklist). Caron et al. 2008: 833 (checklist). Fery 2013: 81 (checklist).

Type material: Holotype: One specimen ( Fig. 3 ), female, deposited in BMNH: (1) “ Aleochara \ prisca Type\ Amazons.\ D.S.” [white label, handwritten]. (2) “Holo\Type” [circular label, white with red boards, ‘Holo’ handwritten]. (3) “Ega.” [circular label, green, handwritten]. (4) “ S. America:\ Brazil ” [white label, printed in black]. (5) “Sharp Coll.\1905-313.” [white label, printed in black]. (6) “ A. prisca \ type. D. S.” [white label, handwritten]. (7) “ Holotype \ Aleochara \ prisca Sharp \ det. R. G. Booth 2014” [white label, handwritten].

Note: Sharp described the species based on holotype.

Additional material: FMNH: Brazil: female. One specimen: (1) “ S. America:\ Brazil ”; (2) “Sharp Coll.\ 1905- 313.”; (3) “Compared with\ type:\ Aleochara \ prisca \ Shp.”; (4) “Chicago Nat. Hist. Mus.\ (ex. D. Sharp Colln \ by exchange with\ Brit. Mus. Nat. Hist.)”; (5) “FMNHINS\ 2840579\ FIELD MUSEUM \ Pinned” . INPA: Brazil: 18 specimens: (1) “Brasil – AM, Manaus\ Reserva Adolpho Ducke\ 16/VII/2008 \ K.M.Mise (Leg.)”; (2) “Coleta manual\ Isca carcaça suína. One specimen: (1) “ Brasil – AM, Manaus\ Reserva Adolpho Ducke\ 10-16/VII/2008 \ K.M.Mise (Leg.)”; (2) “Coleta manual\ Isca carcaça suína. One specimen: (1) “Brasil – AM, Manaus\ Reserva Adolpho Ducke\ 10/VII/2008 \ K.M.Mise (Leg.)”; (2) “Coleta manual\ Isca carcaça suína. Two specimens: (1) “Brasil – AM, Manaus\ Reserva Adolpho Ducke\ 12/VII/2008 \ K.M.Mise (Leg.)”; (2) “Coleta manual\ Isca carcaça suína. Four specimens: (1) “BRASIL, AM, Manaus\ Rod. AM-010, Km-26,\ Reserva Ducke,”; (2) “Isca: Cadáver suíno\ 10.VII.2020, N.J.\ Fraga & J.F. Vidal ”. One specimen: (1) “ BRASIL, AM, Manaus\ Rod. AM-010, Km-26,\ Reserva Ducke, 3.VI.2002,”; (2) “N.J.\ Fraga & J.F. Vidal \ carcassa suína”. One specimen: (1) “Brasil, Amazonas, Manaus\ Fazenda Experimental da\ UFAM, BR 174 , Km 38.\ 20.xii.2007 \ Coleta manual\ T. V. Senra Leg.”; (2) “13—Sthaphylinidae\ M.C.B. Feitosa Det. ” .

Diagnosis: Aleochara prisca differs from other Brazilians A. ( Aleochara ) species by abdominal tergum VIII two times wider than long; apex of median lobe of the aedeagus toothless and apical one-third curved in lateral view (directed ventrad); anterior margin of each side of tergum IX of female with a weakly sclerotized area and rounded median angle.

Redescription: BL: 8.4 mm. EW: 2.2 mm. Head dark brown to black; pronotum predominantly yellowish, or yellowish with dark brown macula on central disc, or entirely dark brown; elytra predominantly yellowish, or yellowish with dark brown macula on disc, or dark brown with external sides lighter or lighter on latero-anterior angle; abdomen brown to dark brown, with posterior half of tergum VII to tergum X lighter, somewhat yellowish to rusty-brown; legs, antennae and mouthparts yellowish to brown. Dorsal surface glossy and covered with thin golden yellowish setae with setigerous pores impressed. Note: the color pattern is very variable in this species, which some individuals are very lighter than the others (for example: holotype), mainly pronotum and elytra.

Head: with setigerous punctation; disc with sparse pubescence directed mediad and anterad. Antennae with antennomere 2 half the length of first and slightly narrower than first; 3 longer than 2; 4 transverse; 5–9 similar in shape, clearly transverse, gradually slightly narrower than the apex, 5 distinctly wider than 9; 10 subquadrate to slightly transverse; 11 twice longer than the previous one, subtriangular in shape; 1–4 glossy with some long black setae; 5–11 dull and covered by very short white setae, some long black setae on apex of each antennomere and in 11 with long black setae on a transversal circular line in the middle of the antennomere.

Thorax: pronotum with setigerous punctuation; setae directed posterad at the midline of the disc and directed posterad and laterad elsewhere. Mesoventral process truncate. Elytra with setigerous punctuation, denser than pronotum; setae directed posterad.

Abdomen: distinctly narrowed posteriorly, maximum width of tergum X about half of apical width of tergum VII; terga coarsely setigerous punctuated, similar to head, pubescence sparse directed posterad.

Male: tergum VIII two times wider than long ( Fig. 26 ); posterior margin emarginate at the middle, not serrated. Sternum VIII as wide as long; posterior margin broadly rounded and truncate medially ( Fig. 27 ); internal surface with many short and dense setae directed anterad; Tergum IX with asymmetrical ventral struts, the left shorter than the right, the left with one accessory short arm directed laterad. Tergum X with anterior margin truncate and posterior margin very slightly emarginate at the middle ( Fig. 28 ). Aedeagus: median lobe elongate and bulbous at base ( Fig. 30 ); apex toothless, ventral margin curved in apical one-third in lateral view, directed ventrad ( Fig. 31 ).

Female: tergum VIII two times wider than long; posterior margin truncate ( Fig. 32 ). Sternum VIII wider than long; posterior margin broadly rounded, somewhat pointed at the middle, some short setae restricted to posterior margin ( Fig. 33 ). Tergum IX without ventral struts; anterior margin of each half of tergum IX with a weakly sclerotized area and rounded median angle. Tergum X with anterior margin truncate and posterior margin emarginate at the middle ( Fig. 34 ). Spermatheca not found.

Geographical records: Material examined: Brazil (Amazonas: Manaus and Tefé) ( Fig. 75 ).

Natural history: associated with decomposing pig carcass.

Figures

FIGURE 75. Map of distribution of Brazilian species of Aleochara (Aleochara).

FIGURES 1–7. Dorsal habitus of Brazilian species of Aleochara (Aleochara). (1) A. auricoma; (2) A. mundana; (3) A. prisca; (4) A. bugnioni; (5) A. lustrica; (6) A. chrysorrhoa; (7) A. bonariensis.

FIGURES 26–31. Morphologic structures of A. prisca, male. (26) Tergum VIII, dorsal view; (27) Sternum VIII, ventral view; (28) Terga IX–X, dorsal view; (29) Paramere; (30) Aedeagus, dorsal view; (31) Aedeagus, lateral view.

FIGURES 32–34. Morphologic structures of A. prisca, female. (32) Tergum VIII, dorsal view; (33) Sternum VIII, ventral view; (34) Terga IX–X, dorsal, view.