Xenopygus bicolor (Laporte)

Caron, Edilson, De Castro, Jessica C., Da Silva, Maycon R. & Ribeiro-Costa, Cibele S., 2016, Phylogeny and revision of a colorful Neotropical genus of rove beetles: Xenopygus Bernhauer (Coleoptera: Staphylinidae), Zootaxa 4138 (1), pp. 59-82 : 73

publication ID

https://doi.org/10.11646/zootaxa.4138.1.2

publication LSID

lsid:zoobank.org:pub:C302BB64-26B4-4959-9914-DB1AB4BB4B1A

DOI

https://doi.org/10.5281/zenodo.5690523

persistent identifier

https://treatment.plazi.org/id/03F087BB-FFBF-FF85-2999-6189FDAEFAD0

treatment provided by

Plazi

scientific name

Xenopygus bicolor (Laporte)
status

 

Xenopygus bicolor (Laporte)

( Figs 3 View FIGURES 2 – 4 , 6, 31, 34, 40, 43, 46, 58)

Staphylinus bicolor Laporte, 1835: 115 (original description, type locality: ‘Cayenne’). Laporte, 1840: 177 (characteristics, distribution). Note: preoccupied name, primary homonym of Staphylinus bicolor Paykull, 1789 (currently Lesteva analis ), but was held according to plenary power of ICZN Committee in Opinion 2053 ( ICZN 2003). Discussion about this topic see ( Herman 2001 a, Herman 2002 and ICZN 2003). Note: Irmler (1982) designates the Neotype from a specimen from Erichson’s collection, also from ‘Cayenne’.

Philonthus bicolor Erichson, 1840: 495 (transferred to Philonthus , characteristics, distribution).

Xanthopygus bicolor Kraatz, 1857: 540 (transferred to Xanthopygus ); Solsky, 1872: 306 (cited as Xanthopygius); Sharp, 1876: 132 (male characteristics, distribution).

Lampropygus bicolor Sharp, 1884: 347 (Error: Sharp referred to Erichson’s species).

Xenopygus bicolor Bernhauer, 1906: 196 (transferred the species to Xenopygus ); Bernhauer & Schubert, 1914: 405 (catalog); Irmler, 1979: 31 (characteristics); Irmler, 1982: 209 (Neotype designation: characteristics); Herman, 2001 a: 54 (nomenclatural discussion); Herman 2001 b: 3610 (catalog); Rodriguez et al., 2012: 233 (characteristics, biological notes).

Type material. Neotype, female, deposited in ZMHB, not studied.

Diagnosis. Xenopygus bicolor is easily distinguished from X. analis and X. confusus by the color of the head and pronotum, metallic blue to green, and elytra yellow to dark brown; apical half of abdominal segment VI and basal half of segment VII evidently darker than the remainder of abdomen ( Fig. 3 View FIGURES 2 – 4 ) and sternite VIII of male with apical margin slightly emarginate at middle (Fig. 34).

Redescription. BL: 9–17 mm, BW: 3.4 mm. Head and pronotum metallic blue to green, elytra and abdominal segments yellowish, apical half of abdominal segment VI and basal half of segment VII evidently darker than the remainder of abdomen ( Fig. 3 View FIGURES 2 – 4 ). Pronotum with setal punctuations forming a pair of longitudinal lines in the median region of disc and distributed in each lateral third, more evident in the anterior half (Fig. 6).

Eyes slightly longer than half of the head. Antenna scape equal to slightly longer than antennomeres II and III combined; antennomere IV as long as wide; antennomeres V–XI with microsetae; antennomere XI apparently symmetric. Mesoventrite process with apex truncate and wide; and metatarsomeres II–IV slightly bilobate. Tergite III–V with arched carina; sternite VII of male with wide porous structure at middle (Fig. 31); sternite VIII of male slightly medially emarginate (Fig. 34). Median lobe with bulbous base ( Fig. 40 View FIGURES 39 – 41 ); apex rounded to pointed, subapically with a small tooth in hook shape in ventral surface (Fig. 43); parameres fused in a single plate and exceed the apex of median lobe, apex round, apical two thirds with peg setae forming two irregular lines near the lateral margins (Fig. 46).

Geographical record. Guyana: Demerara. Equador: Orellana. Peru: Loreto; Madre de Diós. Bolivia: La Paz Department. Brazil: Amazonas; Pará; Acre; Rondônia; Mato Grosso ( Fig. 58 View FIGURES 57 – 59 ).

Biological notes. Xenopygus bicolor was found on tree barks and fungi, collected with feaces baited pitfall traps, and with flight interception traps.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Xenopygus

Loc

Xenopygus bicolor (Laporte)

Caron, Edilson, De Castro, Jessica C., Da Silva, Maycon R. & Ribeiro-Costa, Cibele S. 2016
2016
Loc

Xenopygus bicolor

Rodriguez 2012: 233
Herman 2001: 54
Herman 2001: 3610
Irmler 1982: 209
Irmler 1979: 31
Bernhauer 1914: 405
Bernhauer 1906: 196
1906
Loc

Lampropygus bicolor

Sharp 1884: 347
1884
Loc

Xanthopygus bicolor

Sharp 1876: 132
Solsky 1872: 306
Kraatz 1857: 540
1857
Loc

Philonthus bicolor

Erichson 1840: 495
1840
Loc

Staphylinus bicolor

Laporte 1840: 177
Laporte 1835: 115
1835