Coilodes niger Basílio & Vaz-De-Mello & Cherman & Almeida 2023, stat. rev.
Creators: name: Basílio, Daniel Silva
name: Vaz-De-Mello, Fernando Zagury
name: Cherman, Mariana Alejandra
name: Almeida, Lúcia Massutti de
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hybosoridae
Coilodes
Coilodes niger

description: Coilodes niger (Mannerheim, 1829) stat. rev.
Figs 8, 14C
Hybosorus niger Mannerheim, 1829: 46 (original description).
Coilodes niger – Blackwelder 1944: 217 (checklist). — Allsopp 1984: 107 (checklist). — Ocampo & Ballerio 2006: 191 (catalogue: synonym with Coilodes humeralis). — Basílio et al. 2023: 5 (phylogeny).
Hybosorus auger – Westwood 1846: 165 (incorrect subsequent spelling: taxonomy). — Ocampo & Ballerio 2006: 191 (synonym with C. humeralis).
Coelodes niger – Gemminger & Harold 1869: 1075 (incorrect subsequent spelling: catalogue). — Arrow 1912: 37 (catalogue).
Diagnosis
Similar to Coilodes humeralis, it is distinguished by the subtrapezoidal shape of the pronotum, the rounded anterior margin of the clypeus and male genitalia with a short dorsal lobe on the tegmen, smaller than half the distance between the lobe of the tegmen base and the paramere base.
Type material
Lectotype (here designated)
BRAZIL • ♀; ZIN.
Additional material examined (40 ♂♂ and 36 ♀♀)
BRAZIL – Rio de Janeiro • 1 ♂; Nova Friburgo; Nov. 1998; P. Grossi and E. Grossi leg.; CEMT • 1 ♀; same collection data as for preceding • 16 ♂♂; same collection data as for preceding; Mar. 1998; FIT; CEMT • 14 ♀♀; same collection data as for preceding • 1 ♂; Nova Friburgo; Oct. 1998; P. Grossi leg.; CEMT • 1 ♂; same collection data as for preceding; DZUP • 2 ♂♂; Nova Friburgo, Macaé de Cima; Jan. 2006; B. Miller leg.; CEMT • 1 ♀; same collection data as for preceding • 1 ♂; same collection data as for preceding; DZUP • 1 ♀; same collection data as for preceding • 1 ♀; same collection data as for preceding; CERPE • 11 ♂♂; same collection data as for preceding; Feb. 2006; E.J. Grossi leg.; CEMT • 12 ♀♀; same collection data as for preceding • 2 ♂♂; same collection data as for preceding; CERPE • 1 ♂; same collection data as for preceding; Jan. 2000; E. Grossi and P. Grossi leg.; FIT; CEMT • 1 ♀; same collection data as for preceding • 1 ♀; Teresópolis; Dec. 1973; A. Bello leg.; CEMT • 1 ♂; same collection data as for preceding; Nov. 1990 • 1 ♀; same collection data as for preceding • 1 ♀; same collection data as for preceding; Oct. 1991 • 2 ♂♂; Teresópolis, Pq. Nac. Serra dos Órgãos; Jan. 2014; R. Monteiro leg; CEMT • 3 ♀♀; same collection data as for preceding.
Type locality
Brazil.
Redescription
Male
MEASUREMENTS. Length 5.9–7.6 mm. Width 3.7–4.7 mm. Body (Fig. 8A–B) convex, oval and shiny.
COLOUR. Head and elytra black; pronotum and scutellar shield ranging from black to red; venter and legs dark brown.
HEAD (Fig. 8C–D). Surface slightly strigulate. Frons, in dorsal view, subrectangular; one long tubercle in the middle; proximal border rounded; posterior margin as wide as the anterior one; lateral margin arched; punctures small and sparse or absent. Eye barely visible dorsally. Canthus strong; distinct area expanded downwards. Clypeus semicircular; lateral and anterior margins rounded; setae thin and sparse, throughout clypeal margin dorsally; punctures small and sparse or absent. Labrum semicircular; setae sparse, spreading along the entire dorsal border. Mandibles dorsally excavated, protruding beyond the apex of labrum. Labium with mentum subrectangular; lateral margins slightly rounded, inferior margin arched and superior margin straight; disc strigulate, long setae on the margins. Maxilla subtriangular; long setae throughout surface. Antenna with 10 antennomeres; antennal club with three antennomeres; club with basal antennomere cupuliform.
PRONOTUM (Fig. 8E). Convex; slightly or stronger excavated medially; subtrapezoidal, posterior margin wider than anterior margin; anterior margin straight, angles subacute; posterior margin rounded and weakly produced medially; lateral margin convex; setae and punctures absent.
SCUTELLAR SHIELD. Subtriangular; setae and punctures absent; apex punctate.
ELYTRA. Double row of longitudinal punctures, sutural stria complete, formed by thicker punctures.
VENTER (Fig. 8B). Hypomeral surface strigulate, setose; prosternum (Fig. 8B, D) elevated at midlength, transversally grooved; anterior margin subtrapezoidal, apex straight and jagged, mesoventrite and metaventrite smooth.
LEGS. Procoxa conical; surface strigulate. Protrochanter joint with the procoxa rounded, distally angulate. Profemur with posterior margin carinate. Protibia with inner margin convex; carinate; single spur, slightly curved at the apex; external margin with three larger teeth and series of smaller denticles along the entire margin. Protarsi with tarsal insertion beneath the protibial second tooth. Mesothoracic and metathoracic legs smooth. Mesotrochanter and metatrochanter subtriangular with bifurcated apex. Mesofemur and metafemur carinate on posterior margin. Mesotibia and metatibia with erect setae; apex weakly expanded; pair of spurs with sharp apex. Tarsi with five tarsomeres; tarsal claws toothed medially.
ABDOMEN. Six ventrites with recumbent setae.
GENITALIA (Fig. 8F–K). Lobe of tegmen short; less than half the distance between the lobe of tegmen base and paramere base; parameres asymmetrical; right paramere base as wide as apex, with rounded edges; left paramere with wide base, large, narrow, and rounded apex slightly curved.
Female
Length 7.0 mm. Width 4.3 mm.
Geographical distribution
Brazil (Rio de Janeiro) (Fig. 14C) (Mannerheim 1829; label data).
Biological data
Coilodes niger was collected by flight interception trap.
Remarks
Coilodes niger was synonymized with C. humeralis by Ocampo & Ballerio (2006). It is here revalidated after comparison between the type material of both species and the additional material.
Coilodes auger Westwood, 1846 is C. niger misspelled. As it is not an available name, it is not considered a synonym.
A lectotype is here designated for Coilodes niger because the original description (Mannerheim 1829) neither specified how many specimens were examined nor designated a holotype.
description: Published as part of Basílio, Daniel Silva, Vaz-De-Mello, Fernando Zagury, Cherman, Mariana Alejandra & Almeida, Lúcia Massutti de, 2023, A look beyond the colour: taxonomic revision of Coilodes Westwood, 1846 (Coleoptera, Hybosoridae), with the description of six new species, pp. 1-53 in European Journal of Taxonomy 914 (1) on pages 31-34, DOI: 10.5852/ejt.2023.914.2377, http://zenodo.org/record/10407071