Coilodes skelleyi 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 : 45-47

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

urn:lsid:zoobank.org:act:BC7D6A98-84F6-4DE1-ACAF-985335387750

Figs 13 , 14D

Diagnosis

Similar to Coilodes castaneus , it is distinguished by the presence of a compact lobe on the right side of the tegmen and by having the right paramere with a sinuous apex.

Etymology

Noun in the genitive singular. Coilodes skelleyi Basílio & Vaz-de-Mello sp. nov. is named after Paul E. Skelley, the aphodiine and erotylid specialist, and collector of most specimens known thus far.

Type material

Holotype

PERU • ♂; Loreto, 80 km, NE Iquitos, Explorama Lodge , Rio Ynamono , 1 km from Amazon R.; 1–5 Sept. 1992; P.E. Skelley leg.; human dung; FSCA.

Paratypes (4 ♂♂ and 16 ♀♀)

BRAZIL – Amazonas • 2 ♀♀; Benjamin Constant, “ Guanabara II ”; 10 Mar. 2004; Silva, P. H. leg.; CEMT • 1 ♂; same collection data as for preceding; DZUP • 3 ♀♀; same collection data as for preceding • 2 ♀♀; same collection data as for preceding; CEMT • 1 ♂; Pico da Neblina ; 0°40′ N, 66°00′ W; 5–12 Nov. 1977; Robin Best leg.; CEMT .

PERU – Loreto • 1 ♂; same collection data as for holotype • 5 ♀♀; same collection data as for holotype • 1 ♂; same collection data as for holotype; CEMT • 2 ♀♀; same collection data as for holotype • 2 ♀♀; same collection data as for holotype; DZUP .

Description

Male (holotype)

MEASUREMENTS. Length 5.6 mm. Width 3.2 mm. Body ( Fig. 13A–B ) convex, oval and shiny.

COLOUR. Head, scutellar shield, elytra and legs dark brown; pronotum and venter yellowish brown.

HEAD ( Fig. 13C–D ). Surface slightly strigulate. Frons, in dorsal view, subrectangular; one long tubercle in the middle; proximal border rounded; posterior margin narrower than the anterior; lateral margin slightly arched; disc slightly strigulate. Eye visible dorsally. Canthus strong; distinct area expanded downwards. Clypeus subtrapezoidal; lateral margins weakly rounded; anterior borders rounded; apex straight; setae thin and sparse, throughout the anterior margin dorsally; disc strigulate. Labrum semicircular; slight medial projection; setae sparse, spreading along the entire dorsal border. Mandibles dorsally excavated, protruding beyond the apex of labrum. Labium with mentum subquadrate; inferior margin arched; 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. 13E ). Convex; slightly excavated medially; posterior margin as wide as the anterior one; anterior margin arched, angles subacute; posterior margin rounded and produced medially; lateral margin convex, setae absent; punctures thin and sparse.

SCUTELLAR SHIELD. Subtriangular; setae and punctures absent; apex punctate.

ELYTRA. Double row of thick longitudinal punctures, sutural stria complete, formed by thick punctures.

VENTER ( Fig. 13B ). Hypomeral surface strigulate, setose; prosternum ( Fig. 13B, D ) elevated at midlength, transversally grooved; anterior margin subtrapezoidal and flat, projected outward; mesoventrite and metaventrite smooth.

LEGS. Procoxa conical; surface smooth. Protrochanter joint with the procoxa rounded, distally angulate. Profemur with posterior margin carinate. Protibial 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 second protibial 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. 13F–K ). Lobe of tegmen on the right side, with rounded apex, measuring ⅔ of the distance between the lobe base and the paramere base; sclerotized region next to right paramere base; parameres asymmetrical; right paramere subrectangular, longer than wide, with curved apex; left paramere, spoon-shaped, dislocated to dorsal region.

Female

Length 5.2–6.7 mm. Width 3.1–4.2 mm.

Variation Length ranging from 5.2 to 6.7 mm. Width ranging from 3.1 to 4.2 mm. Body colour in dorsal view sometimes uniform, ranging from yellowish brown to dark brown. Frons lateral margins may have a strong rectangular entrance.

Geographical distribution

Peru (Loreto); Brazil (Amazonas) ( Fig. 14D ).

Biological data

Species collected in human faeces (label data).

Figures

Fig. 13. Coilodes skelleyi Basílio & Vaz-de-Mello sp. nov., paratype ♂ at CEMT from Pico da Neblina, Amazonas, Brazil (A, F–G), paratype ♀ at DZUP from Loreto, Peru (B), paratype ♂ at DZUP from Benjamin Constant, Amazonas, Brazil (C, E), holotype ♂ (D, 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.