Aleochara (Xenochara) repetita Sharp, 1887

Buss, Bruna Caroline & Caron, Edilson, 2023, Revision of Brazilian species of Aleochara Gravenhorst of the subgenus Xenochara Mulsant & Rey (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 5330 (4), pp. 509-534 : 522-524

Aleochara (Xenochara) repetita Sharp, 1887

( Figures 6 , 11, 12 , 20 , 69–76 , 94 )

Aleochara repetita: Sharp, 1887: 776 (original description). Bernhauer & Sheerpeltz 1926: 783 (as subgenus Baryodma ). Caron et al. 2008: 834 (as subgenus Coprochara ). Buss et al. 2018: 703 (as subgenus Xenochara ). Newton 2022 (as valid species).

Type locality: Panama, San Félix and Brazil, Pará ( Buss et al. 2018). A complete discussion about the type locality see in Buss et al. (2018).

Aleochara opacula Bernhauer, 1901:369 (Original description). [Type locality: “ Brasil:Amazon” ( Klimaszewski & Maus 1999)]. Klimaszewski & Maus 1999: 209 (Lectotype designation and attribution to the subgenus Xenochara ). New synonym.

Type material. Syntype, ♁, dissected, deposited in FMNH, with labels ( Figs. 1 and 2 in Buss et al. 2018): (1) “♁[male sign]\ Aleochara repe -\ tita. D.S.\San Felix Panama \Champion.” [old card with syntype glued, manuscript]; (2) “San Feliz,\ Panama.\Champion.” [old white label, printed in black]; (3) “B.C.A. Col. I. 2.\ Aleochara \ repetita ,\ Sharp.” [old white label, printed in black]; (4) “Sharp Coll.\1905.-313.” [old white label, printed in black]; (5) “Chicago Nat. Hist. Mus.\(ex. D. Sharp Colln.\by exchange with\Brit. Mus. Nat. Hist.)” [old white label, printed in black]; (6) “[QR Code] FMNHINS/2840577/ FIELD MUSEUM \Pinned” [old white label, printed in black]; (7) “ Aleochara ( Xenochara \ repetita \ Det., Moussallem, 2014” [white label, two first lines manuscript, third printed in black].

Type material. Only pictures were analyzed ( Figs. 11 and 12 ). Lectotype, ♀, deposited in FMNH. With labels: (1) “ opacula Fvl. \Amazonas\Staudinger”[white label, printed in black]; (2) “ opacula Brh. \Type” [white label, printed in black]; (3) “474” [white label, printed in black]; (4) “Chicago NHMus\ M.Bernhauer \ Collection” [white label, printed in black]; (5) “LECTOTYPE (female)\ Aleochara (X.) \ opacula Bernh. \Des. Klimaszewski e\ Maus , 1998” [old red label printed in black]; (6) “ Bernhauer Brazil Types \PHOTOGRAPHED\ E. Caron 2017” [blue label, printed in black]; (7) “[QR Code] FMNHINS/3048724/ FIELD MUSEUM \ Pinned ” [old white label, printed in black].

Additional material. Deposited in CESP 187 specimens, MNRJ 45 specimens, MPEG 30 specimens and MZUSP 47 : Brazil, Pará, Uruará , II–X.2015, collected in pitfall traps baited with banana, or meat, or feces, collected by Reinaldo et al. Deposited in CESP : 9 specimens from Brazil, Mato Grosso do Sul, Bonito , 04–05.III.2004 and 03–04.III.2009, no collectors data . 10 specimens from Brazil, Paraná, Palotina , 23. VI.2011 to 24.XII.2012, collected manually or with pitfall trap, R. J. Simioni, S. B. Silva and E. Caron col. 12 specimens from Brazil, Paraná, Palotina , 24.III.2017 to 05. V.2017, pitfall trap, G.S. Hein and B. Buss col. 3 specimens from Brazil, Paraná, Palotina , IV.2016, pitfall, A. Nicolau col. 1 specimen from Brazil, Paraná, Toledo , 13.I.2013, C. K. Kotzko col.

Diagnosis. Aleochara (X.) repetita differs from A. (X.) leivasorum sp. nov. and A. (X.) lapidicola by having male tergum VIII with posterior margin emarginate and coarsely serrated (around 10 teeth) ( Fig. 69 ); and female sternum VIII with posterior margin slightly emarginate ( Fig. 72 ).

Redescription. Male: maximum body length 7.0 mm, maximum elytral width 1.5 mm. Body brownish to dark brown with appendages (antenna: antennomeres 1 and 2 only), elytra (except posterolateral regions) and posterior half of abdominal segments VII and VIII lighter. Body dorsal surface glossy; pubescent, appearing yellowish-brown in artificial light; setigerous pores impressed. Head: circular. Pubescence directed anterad. Eyes large and slightly prominent, twice the length of temples. Ventral surface of head with a very short carina on each side of midline. Neck absent. Antenna reaching base of elytra; antennomere 1 subequal in length to antennomere 2 and 3 ( Fig. 20 ); antennomere 4 slightly longer than wide; antennomere 5 subquadrate; antenomeres 6–10 wider than long, gradually increasing in width towards apex; antennomere 11 two times longer than wide, length almost equaling two preceding antennomeres combined; antennomeres 1–4 glossy with some long black setae; antennomeres 5–11 covered by very short white setae, with some long black setae on apex each antennomere; 11 with long black setae on a transverse circular line at the apex of basal one-third of the antennomere. Labrum transverse; anterior margin with a-sensilla and b-sensilla long. Mandibles symmetrical, without internal teeth. Maxillary palpomere 2 and 3 about the same length; palpomere 4 about half length of 3. Gular plate broad. Thorax: pronotum transverse, posterior margin broadly curved; densely pubescent, with pubescence directed posterad and laterad elsewhere. Elytra shorter than pronotum; the same width with pronotum; elytra wider than long; densely pubescent, pubescence directed posterad; each posterolateral margin kindly rounded. Hind wings developed. Mesoventrite completely carinate; mesoventrite process somwhat sharp and longer than metaventrite process, both joined. Abdomen: distinctly narrowed posteriorly. Pubescence sparse directed posterad. Tergum VIII with posterior margin emarginate and coarsely serrated (around 10 teeth) ( Fig. 69 ). Sternum VIII with posterior margin very slightly emarginate ( Fig. 71 ). Aedeagus elongate ( Figs. 73–75 ); median lobe of the aedeagus with apex strongly curved directed ventrad in lateral view. Female: similar to male, except for tergum VIII with posterior margin emarginate, somewhat U-shaped, not serrate ( Fig. 70 ). Sternum VIII with posterior margin slightly emarginate (but, more conspicuous than the male) ( Fig. 72 ). Spermatheca Lcurved and irregularly twisted duct ( Fig. 76 ).

Geographical records. New records: Brazil: Mato Grosso do Sul (Bonito), Paraná (Toledo). Literature records: Panama: Chiriqui (San Félix), and Brazil: Pará (Uruará), Distrito Federal (Planaltina) and Paraná (Palotina) ( Buss et al. 2018) ( Fig. 94 ).

Taxonomic notes. The name A. (X.) opacula Bernhauer, 1901 is here treated as junior synonym of A. (X.) repetita , after the study of the type material.

Biological notes. The specimens of A. (X.) repetita are often collected using pitfall traps baited with banana, meat or feces, from un-baited pitfall traps (but close to the pig carcass), or also manually in pig carcass.

Figures

FIGURE 94. Map of Brazilian records for some species of Aleochara (Xenochara): A. (X.) repetita; A. (X.) capitinigra and A. (X.) verberans.

FIGURES 1–8. Dorsal view of Brazilian species of Aleochara (Xenochara). 1) A. (X.) puberula; 2) A. (X.) verberans; 3) A. (X.) simulatrix; 4) A. (X.) taeniata; 5) A. (X.) capitinigra sp. nov.; 6) A. (X.) repetita; 7) A. (X.) lapidicola; 8) A. (X.) leivasorum sp. nov. Scales: 1.0 mm.

FIGURES 9–14. Types of Aleochara (Xenochara). 9, 10) A. simulatrix, 9) habitus, dorsal view, 10) labels; 11, 12) A. opacula, 11) habitus, dorsal view (scale 1 mm), 12) labels; 13, 14) A. festiva, 13) habitus, dorsal view, 14) labels.

FIGURES 15–22. Antennae of Brazilian species of Aleochara (Xenochara). 15) A. (X.) puberula; 16) A. (X.) verberans; 17) A. (X.) simulatrix; 18) A. (X.) taeniata; 19) A. (X.) capitinigra sp. nov.; 20) A. (X.) repetita; 21) A. (X.) lapidicola; 22) A. (X.) leivasorum sp. nov. Scales: 0.6 mm.

FIGURES 69–76. Terminalia of Aleochara (Xenochara) repetita. 69) Tergum VIII, male; 70) Tergum VIII, female; 71) Sternum VIII, male; 72) Sternum VIII, female; 73) Median lobe of aedeagus, dorsal view; 74) Median lobe of aedeagus, ventral view; 75) Median lobe of aedeagus, lateral view; 76) Spermatheca. Scales: 0.6 mm (Figs. 69–72), 0.5 mm (Figs. 73–75), 0.15 mm (Fig. 76).