Coilodes niger ( Mannerheim, 1829 ), 2023

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, European Journal of Taxonomy 914 (1), pp. 1-53 : 31-34

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.

Figures

Fig. 8. Coilodes niger (Mannerheim, 1829) stat. rev., two ♂♂ from Macaé de Cima, Nova Friburgo, Rio de Janeiro, Brazil, at CERPE (A–E) and at CEMT (F–G); another ♂ at CEMT from Nova Friburgo, Rio de Janeiro, Brazil (J–K); and graphical representation (H–I). A. Body, dorsal view. B. Body, ventral view. C. Head, dorsal view. D. Head, ventral view. E. Pronotum, dorsal view. F–K. Male genitalia. F. Dorsal view. G. Ventral view. H. Right paramere. I. Left paramere. J. Right side. K. Left side. Scale bars: A–B = 1 mm; C–E = 0.5 mm; F–K = 0.2 mm.

Fig. 14. Distribution map of species of Coilodes Westwood, 1846. A. Coilodes bezerrai Basílio & Vazde-Mello sp. nov.; Coilodes castaneus Westwood, 1846; and Coilodes edeiltae Basílio & Vaz-de-Mello sp. nov. B. Coilodes fumipennis Arrow, 1909; Coilodes humeralis (Mannerheim, 1829); and Coilodes lunae Basílio & Vaz-de-Mello sp. nov. C. Coilodes mayae Basílio & Vaz-de-Mello sp. nov.;Coilodes niger (Mannerheim, 1829) stat. rev.; Coilodes ovalis Robinson, 1948; and Coilodes parvulus Westwood 1846. D. Coilodes punctipennis Arrow, 1909; Coilodes ravii Basílio & Vaz-de-Mello sp. nov.; and Coilodes skelleyi Basílio & Vaz-de-Mello sp. nov.