Liogenys grossii Cherman

Cherman, Mariana Alejandra, Mise, Kleber Makoto, Moron †, Miguel Angel, Vaz-de-Mello, Fernando Z. & Almeida, Lucia Massutti de, 2017, A taxonomic revision of Liogenys occurring in Brazil with an interactive key and remarks on New World Diplotaxini (Coleoptera, Melolonthidae), ZooKeys 699, pp. 1-120 : 91-92

Liogenys grossii Cherman sp. n. Figs 85, 90

Type-specimen.

Holotype male, pinned, with genitalia mounted. Original labels: [white printed] "BRASIL. BA/Encruzilhada. Estr. SE/16. XII. 2012. Luz/ P. C. Grossi Coll", [red printed] “HOLOTYPE” (CERPE). Paratypes (5) bearing the label [red printed] “PARATYPE”: Female paratype labeled: [white printed] "BRASIL, BA, Encruzilhada/ 15°34'35"S 40° 56'51"W / 15.xii.2012, J.A.Rafael and/ E.J.Grossi, Arm. Luz, 850m" (INPA). Female paratype labeled. [White printed] "BRASIL. MG. Aguas/ Vermelhas. Faz. Faccino/ 12.XII. 2012. Luz/ P. C. Grossi Coll" (CERPE). Three female paratypes labeled: [white printed]"BRASIL: Bahia, Encruzilhada,/ Divisa, [long space] XI.1975". (MNRJ). Holotype and one paratype deposited at CERPE, Coleção Entomologica da Universidade Federal Rural de Pernambuco, Recife. Female paratype deposited at INPA, Instituto Nacional de Pesquisa Amazônica, Manaus; and three female paratypes at MNRJ, Museu Nacional de Rio de Janeiro, Rio de Janeiro.

Diagnosis.

Body brownish; elongate; elytra testaceous, pronotum purplish red, sparsely punctured; clypeal emargination sharp and wide; outer sides of anterior teeth parallel; clypeal lateral margin convex, with a sub-angled tooth-like projection, right angle between outer side of anterior teeth and clypeal lateral projection; mesotibia quadrate in cross section; inner margin of male metatibia medially produced; ventrites III to V strongly produced medially (Fig. 85F); pygidium flat, as wide as it is long; pygidial disc bristled only on apex, coarsely punctured; male genitalia, basal region narrower than the width of the parameres together at its maximum width, parameres narrowed subapically, apical edges rounded (Fig. 85G).

Holotype.

Male. Length: 13.3 mm; width: 6.4 mm. Elytra testaceous, pronotum purplish red. Head: distance between eyes nearly twice the width of one eye; frons swollen, equal in length to clypeus; clypeal emargination sharp, shallow and wide; outer sides of anterior teeth parallel; outer margin of anterior teeth three times shorter than the eye; clypeal lateral margin convex, with a sub-angled tooth-like projection; distance between clypeal lateral projection and anterior margin of eye slightly shorter than one eye; distance between clypeal lateral projection and anterior tooth shorter than basal width of anterior tooth; right angle between outer side of anterior teeth and clypeal lateral projection; canthus not exceeding the outer margin of the eye; distal maxillary palpomere, maximum width as wide as the apex; fovea shallow, elongate, extending past the transverse midline of the palpomere; labium transversely carinated, as wide as it is long; antenna 10-articulated, lamellae slightly lighter in color and longer than flagellum. Thorax: anterior margin of pronotum slightly produced medially; maximum length of pronotum exceeding the length of tarsomeres I, II and III together; disc glabrous, punctures fine and very sparse; pronotal posterior corners sharp, almost right-angled; proepisternum with short bristles; mesepisternum scaly; sides of metasternum bristled; distance between meso- and metacoxae up to twice longer than the metacoxa; scutellum ogival, finely punctured at the base. Elytra: shiny, glabrous, uniformly testaceous, distinctly lighter in color than pronotum; elytra more than three times longer than the pronotum; elytral suture darker than elytron and distinctly elevated; all four elytral ridges barely noticeable. Legs: procoxa bristled on infra-carinal and outer surface; punctures visible at 12 × magnification; three protibial teeth, middle and apical equal in size, the three teeth equally spaced; protibial inner apical spur present; mesofemural disc setose, scarcely bristled; mesotibia quadrate in cross section, disc coarsely sculptured; two mesotibial transverse carinae, the apical one incomplete; basal apophysis of metacoxa produced beyond the outer margin of trochanter; inner margin of metatibia carinated and abruptly medially produced towards apex; apical inner surface setose; metatibial disc finely sculptured; metatibial transverse carina present posteriorly; metatibia with posterior discontinuous longitudinal carina; metatibial spurs equal in length, length equal to the diameter of the tibial apex; protarsomere II long; pro- and mesotarsomeres I to IV enlarged, protarsomeres two-fold wider than the mesotarsomeres and more than three times wider than the metatarsi; basal metatarsomere longer than tarsomere II and as wide as; claw bifid, symmetrical, superior tooth longer and narrower than the inferior; distance between teeth shorter than the inferior tooth. Abdomen: ventrites bristled on disc and sides; ventrites III, IV and V strongly produced medially; propygidium visible, glabrous; pygidium flat; sub-quadrate, as wide as it is long; pygidial width not exceeding distance between spiracles of propygidium; pygidial disc bristled only on apex, coarsely punctured; pygidial apex quadrate. Parameres: basal region narrower than the parameres together at its maximum width, parameral split at the third portion; inner margins convergent; narrowed subapically; apical edges rounded (Fig. 85G). In lateral view parameres slightly concave (Fig. 85H).

Female paratype. Length: 13.9 mm; width: 7.2 mm. As the holotype except in the size bigger, body wider and darker, clypeal lateral margin weakly produced; ventrites not produced medially and pygidium convex.

Etymology.

Noun in the genitive case. The species is dedicated to its collector, Dr Paschoal Coelho Grossi, great Scarabaeoidea researcher and author of numerous species within the superfamily.

Type-locality.

BRAZIL, Bahia: Encruzilhada [40°56'51"W, 15°34'35"S], from light, 16 Dec 2012, P. C. Grossi Coll.

Geographical distribution.

BRAZIL (BA, MG).

Remarks.

Liogenys grossii Cherman, sp. n. resembles L. spiniventris (Fig. 73) in the size, shape and color of the body and elytra, shape of clypeus and mainly in the presence of medial projections on ventrites. The new species differs in the additional medial projection on ventrite and in the shape of the parameres (Fig. 85F), narrowed subapically.