Liogenys moseri Frey, 1969

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 : 41-42

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Liogenys moseri Frey, 1969


Liogenys moseri Frey, 1969 Figs 66, 93

Liogenys moseri Frey, 1969: 60, 49 (orig. desc., key); Evans 2003: 211 (check.); Evans and Smith 2005: 175 (check.); Evans and Smith 2009: 179 (check.).

Type material.

Liogenys moseri male syntype (ZMHB): [white printed] "Rio Jan", [white printed] " Liogenys / laminiceps /Mos.", [light red printed] “Typus”, [white handwritten] "Type/ [printed] Liogenys / [handwritten] moseri n. sp./[printed] det G. Frey, 1968", [red printed] "SYNTYPUS/ Liogenys / moseri Frey, 1969/labelled by MNHUB 2014". This type is here designated the lectotype [white, outlined in red, printed] "LECTOTYPE/ Liogenys moseri /Frey, 1969/des. M. A. Cherman 2014". Genitalia mounted. Male syntype (NHMB): [white printed] "Rio Jan", [white handwritten] " Liogenys /sjoestedti/Mos/Typen.", [red printed] “PARATYPE”, [white printed] Liogenys / [handwritten] moseri /n. sp./[printed] det G. Frey, 1968", [white handwritten] “Wagner”, [white printed] “Hieke/Berlin”. This type is here designated the paralectotype [white, outlined in red, printed] "PARALECTOTYPE/ Liogenys moseri /Frey, 1969/des. M. A. Cherman 2014".

Non-type material.

BRAZIL. Without locality and date, 1 ex. (NHRS); MT: Pocone: Margen baia do Burro, 17°50.73'S, 57°24.17'W, 15/XI/2011, J. L. da Silva col., 1 ex.; without date, 1 ex.; Sede do parque [Parque Nacional do Pantanal Matogrossense], 17°50.73'S, 57°24.17'W, 15/XI/2011, J. L. da Silva col., 1 ex. (CEMT).


Body and elytra testaceous, elongate, sides almost parallel; pronotum reddish brown; clypeal emargination shallow, rounded and wide; outer sides of anterior teeth parallel; clypeal lateral margin with a sharp tooth-like projection, forming a deep right angle between this projection and the anterior teeth; pronotal posterior corners apparently rounded, weakly obtuse; mesepisternum, sides of metasternum, metacoxae and ventrites scaly; mesotibia quadrate in cross section; male metafemur medially produced on posterior margin; pygidium flat; sub-quadrate; pygidial disc with abundant erect bristles throughout; punctures reticulated; parameres widened on apex, apex rounded; inner margins convergent.


Length: 9.8-10.8 mm; width: 4.6-5.0 mm. Testaceous. Head: distance between eyes nearly twice the width of one eye; frons shorter than clypeus; clypeal emargination rounded, shallow and wide; outer sides of anterior teeth parallel; outer margin of anterior teeth as long as the eye; clypeal lateral margin convex, with a sharp tooth-like projection, distance between clypeal lateral projection and anterior margin of eye longer than one eye, distance between tooth-like projection and anterior tooth shorter than basal width of anterior tooth; right angle between outer side of anterior teeth and clypeal lateral projection; canthus exceeding the outer margin of the eye; distal maxillary palpomere, maximum width more than twice width of apex, fovea deep; not reaching the transverse midline of the palpomere; labium transversely carinated, as wide as it is long; antenna 10-articulated, lamellae and flagellum unicolored and equal in length. 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 coarse and dense; pronotal posterior corners apparently rounded, weakly obtuse; proepisternum with short bristles; mesepisternum scaly, as are the sides of metasternum, also with few long bristles on the anterior margin; distance between meso- and metacoxae up to twice longer than the metacoxa; scutellum ogival, coarsely punctured at the base. Elytra: shiny, glabrous, uniform testaceous, lighter in color than the pronotum; elytra more than three times longer than the pronotum; elytral suture slightly darker than elytron and distinctly elevated; all four elytral ridges barely noticeable. Legs: procoxa scaly on infra-carinal and outer surface; three protibial teeth, mid dle and apical equal in size, the three teeth equally spaced; protibial inner apical spur present; mesofemural disc setose; 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; metafemur medially produced on posterior margin; metatibial apical spurs of different lengths, the longest one shorter than the diameter of the tibial apex; inner margin of metatibia carinated towards apex, apical inner surface setose; metatibial disc finely sculptured; two metatibial transverse carinae present posteriorly; basal metatarsomere and tarsomere II equal in size, in males protarsomere II short and wide; in males pro- and mesotarsomeres I to IV enlarged and more than twice as wide as metatarsi; claw bifid, symmetrical, superior tooth longer and as wide as the inferior; distance between teeth as long as the inferior tooth. Abdomen: band of scales visible at the lowest magnification beneath the outer margin of elytra; ventrites scaly on disc; propygidium visible, bristled; pygidium flat, sub-quadrate, wide, pygidial width not exceeding distance between spiracles of propygidium; pygidial disc with abundant erect bristles throughout, punctures reticulated; pygidial apex rounded. Parameres: width of basal region equal to the parameres together at its maximum width, parameral split at 2/3; inner margins convergent; apex widened, rounded (Fig. 66F). In lateral view parameres slightly concave (Fig. 66G).


BRAZIL. Rio de Janeiro.

Geographical distribution.



Liogenys moseri resembles L. obesina Frey, 1969 -a northern Argentinian species- mainly in the shape of the parameres, but they differ in the body shape, being the sides more parallel in L. moseri ; clypeal lateral margins produced; thorax and abdomen scaly ventrally; pygidial apex slightly narrower and bristles on disc thicker. The type-locality of L. moseri (Rio de Janeiro) is dubious, as the amount of localities recorded among the non-type material are from Mato Grosso state, which is very far from Rio de Janeiro. The type material was collected by Wagner during the end of 19th century and beginning of the 20th, mainly in Rio Salado region (Santiago del Estero, Argentina). Probably, the original type-locality written on the label was "Rio Sal" instead of "Rio Jan", misspelled by the person who wrote the definitive label. Female of L. moseri remains unknown.