Coilodes ravii Basílio

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 : 42-44

Coilodes ravii Basílio & Vaz-de-Mello sp. nov.

urn:lsid:zoobank.org:act:3CA8E8E5-3A5E-41A8-BF4C-404E609C4A4A

Figs 12 , 14D

Diagnosis

Similar to Coilodes punctipennis , it is distinguished by the presence of finer punctures on elytra and by the presence of a sharp lobe on the right side of the tegmen, reaching the base of parameres.

Etymology

Noun in the genitive singular. Coilodes ravii Basílio & Vaz-de-Mello sp. nov. is named after Ravi Basílio Dantas, nephew of the first author.

Type material

Holotype

ECUADOR • ♂; Prov. Napo, vic. Puerto Misahuali ; 1°02′04.2″ S, 77°39′49.2″ W; alt. 1650–1900 ft; 6–19 Sep. 1998; J.E. Eger leg.; fish carrion baited, pitfall trap; CEMT.

Paratypes (2 ♂♂ and 4 ♀♀)

ECUADOR – Napo • 1 ♂; same collection data as for holotype; CEMT • 1 ♀; same collection data as for holotype; CEMT • 1 ♂; same collection data as for holotype; DZUP • 1 ♀; same collection data as for holotype; DZUP • 1 ♀; Yutari; Mar. 1990; S. Sandoval leg.; CEMT • 1 ♀; Pichira; 8 Mar. 1990; S. Sandoval leg.; [trap], “carne baja”; CEMT .

Description

Male (holotype)

MEASUREMENTS. Length 6.4 mm. Width 3.7 mm. Body ( Fig. 12A–B ) convex, oval and shiny.

COLOUR. Body, yellowish brown; elytra with outer margins black.

HEAD ( Fig. 12C–D ). Surface slightly strigulate. Frons, in dorsal view, subrectangular; two small tubercles merged, in the middle; proximal border rounded; posterior margin as wide as the anterior one; lateral margin, straight and darker; surface without punctures. Eye barely visible dorsally. Canthus strong; distinct area expanded downwards. Clypeus subrectangular; lateral margins weakly rounded; anterior borders rounded; apex straight; setae thin and sparse, throughout the anterior margin dorsally; surface without punctures. Labrum semicircular; setae sparse, spreading along the entire dorsal border. Mandibles dorsally excavated, protruding beyond the apex of labrum. Labium with mentum subquadrate; inferior and lateral margins straight and superior margin slightly curved in the middle; 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. 12E ). Convex; strongly excavated medially; subtrapezoidal, posterior margin wider than anterior one; 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. 12B ). Hypomeral surface strigulate, setose; prosternum ( Fig. 12B, D ) elevated at midlength, transversally grooved; anterior margin straight and flat, 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. 12F–K ). Lobe of tegmen triangular on right side, reaching the paramere bases; sclerotized region next to paramere bases; parameres asymmetrical; right paramere longer than wide, straight base and apex rounded; left paramere dislocated to ventral region, straight apex strongly curved outward.

Female

Length 5.8 mm. Width 3.6 mm.

Variation

Length ranging from 5.8 to 6.4 mm. Width ranging from 3.5 to 3.7 mm. Head and pronotum colour ranging from yellowish brown to dark brown. Pronotum in males sometimes with a slight excavation.

Geographical distribution

Ecuador (Napo) ( Fig. 14D ).

Biological data

Species collected in carcasses of fish (label data).

Figures

Fig. 12. Coilodes ravii Basílio & Vaz-de-Mello sp. nov., holotype ♂ (A–G, 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.