Liogenys punctaticollis (Blanchard, 1851)

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 : 48-51

Liogenys punctaticollis (Blanchard, 1851) Figs 69, 90

Hilarianus punctaticollis Blanchard, 1851: 169 (orig. desc.); Lacordaire 1856: 270 (sys.); Harold 1869a: 1141 (check.); Dalla Torre 1913: 319 (check.); Blackwelder 1944: 228 (check.).

Liogenys palmata Burmeister, 1855: 13 (orig. desc.); Blackwelder 1944: 227 (check.).

Liogenys palmatus : Harold 1869a: 1140 (check.); Dalla Torre 1913: 318 (check.); Frey 1969: 40, 56 (key, red.).

Liogenys punctaticollis : Frey 1974: 331 (n. comb.; senior syn. of L. palmata ); Evans 2003: 213 (check.); Evans and Smith 2005: 177 (check.); Evans and Smith 2009: 181 (check.).

Hilarianus anguliceps Blanchard, 1851: 169 (orig. desc.); Lacordaire 1856: 270 (sys.); Harold 1869a: 1141 (check.); Dalla Torre 1913: 319 (check.); Blackwelder 1944: 228 (check.); Evans 2003: 273 (check.); Evans and Smith 2005: 230 (check.); Evans and Smith 2009: 308 (check.); Cherman et al. 2016: 23 (junior syn. of L. punctaticollis ).

Type material.

Hilarianus punctaticollis male holotype (MNHN): [handwritten] “Brésil”, [light green printed] “MUSÉUM PÁRIS”, [red printed] “SYNTYPE”, [green handwritten] " H. punctaticollis / Cat Mus/ Brésil / M. de Castelnau". Genitalia mounted.

Liogenys palmata male lectotype (MHLU): [handwritten] " palmata / Germ./ Bras Int.", [white handwritten] "Type/ Liogenys / palmatus /burm/[printed] det. G. Frey 1967/68". Genitalia mounted. Male paralectotype (MHLU): "P. Type/ Liogenys / palmatus / burm/ [printed] det. G. Frey 1967/68", [green printed] “Nov./Frib.”, [white printed] "Prof. Hüsind/Halle” Genitalia mounted. Female paralectotype (MHLU): "P. Type/ Liogenys / palmatus /burm/[printed] det. G. Frey 1967/68", [white printed] "Prof. Hüsind/Halle”. Those three types were labeled by Frey in 1967/68, as Type and P. Types and that is why they are here considered as lectotype and paralectotypes.

Hilarianus anguliceps female holotype (MNHN): [white handwritten] “71/44”, [light green printed] “MUSÉUM PÁRIS /Rio-Janeiro/de Castelnau", [white handwritten] “f”, [white handwritten] " Hilarianus / anguliceps Bl", [red printed] “SYNTYPE”, [green handwritten] " H. anguliceps /Cat Mus/ Brésil /M. de Castelnau".

Non-type material.

BRAZIL. ES: Rio Bonito, X/1963, 600 m, without collector, 1 ex. (DZUP); MG: Mesquita, XII/1973, Ravenna col., 1 ex. (CMNC); SP: São Paulo, IX/1936, J. Zikan col., 1 ex. (IBSP); without locality and date, Raben col., 1 ex. (ZMUC).

Diagnosis.

Body brownish; elongate; elytra testaceous to brownish, pronotum darker, reddish brown in males and dark brown in females; clypeal emargination sub-angled and wide; outer sides of anterior teeth sub-parallel; clypeal lateral margin straight; mesotibia quadrate in cross section in males, sub-quadrate to cylindrical in females; posterior margin of male metafemur medially produced on posterior margin; metatibial inner margin abruptly sub-basally or medially produced; pygidium varies from flat to convex, as wide as it is long, pygidial disc bristled only on apex; in males, total length of parameres near five times the length of their apex; inner margins convergent; apex harpoon-like with lateral angle curved projecting almost perpendicular to parameres (Fig. 69F).

Redescription.

Length: 14.0-16.0 mm; width: 6.9-7.9 mm. Brownish. Head: distance between eyes nearly twice the width of one eye; frons shorter than clypeus; clypeal emargination sub-angled, shallow and wide; outer sides of anterior teeth sub-parallel; outer margin of anterior tooth shorter than the eye; clypeal lateral margin straight; canthus not exceeding the outer margin of the eye; distal maxillary palpomere, maximum width less than twice width of apex; fovea shallow, extending past the transverse midline of the palpomere; labium transversely carinated, as wide as it is long; antenna 10-articulated, lamellae 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 sparse and coarse; pronotal posterior corners sharp, almost right-angled; proepisternum with short bristles; mesepisternum scaly; sides of metasternum scaly and bristled, few long bristles on the anterior margin; distance between meso- and metacoxae up to twice longer than the metacoxa; scutellum ogival, finely punctured at the sides. Elytra: shiny, glabrous, uniform brownish, barely lighter in color than the pronotum; elytra more than three times longer than the pronotum; elytral suture slightly darker than elytron and distinctly elevated; pair of inner ridges more noticeable than outer three pairs. 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, with a row of long bristles on anterior and posterior margins; mesotibia sub-quadrate in cross section; disc coarsely sculptured, apical transverse carina in male mesotibia with intraspecific variation being partial or complete, in females always complete; basal apophysis of metacoxa produced beyond the outer margin of trochanter; male metafemur medially produced on posterior margin; metatibia with posterior discontinuous longitudinal carina; metatibial apical spurs equal in length, length equal to the diameter of the tibial apex; inner margin of male metatibia carinated and abruptly medially produced towards apex, apical inner surface setose, metatibial disc finely sculptured; metatibial transverse carina present posteriorly; basal metatarsomere and tarsomere II equal in size, in males protarsomere II long; pro- and mesotarsomeres I to IV enlarged, protarsomeres slightly wider than the mesotarsomeres and more than twice as wide as metatarsi; claw bifid, symmetrical, superior tooth longer and as wide as the inferior; distance between teeth shorter than the inferior tooth. Abdomen: ventrites bristled on disc; propygidium visible, glabrous; pygidium in lateral view flat or convex, in posterior view sub-trapezoidal, as wide as it is long; pygidial width not exceeding distance between spiracles of propygidium, pygidial disc bristled only on apex; pygidial apex in males quadrate. Parameres: width of basal region equal to the parameres together at its transverse midline, parameral split at the third portion; total length of parameres near five times the length of their apex; inner margins slightly convergent and opened; apex harpoon-like with lateral angle curved projecting almost perpendicular to parameres (Fig. 69F). In lateral view parameres concave (Fig. 69G).

Type-locality.

Liogenys punctaticollis : BRAZIL; Liogenys anguliceps : BRAZIL. Nova Friburgo, RJ (syn). Liogenys palmata : BRAZIL, “int” (syn).

Geographical distribution.

BRAZIL (ES, MG, RJ, SP).

Remarks.

Liogenys punctaticollis differs from L. tibialis (Fig. 77) in a few features, such as the lateral margin of clypeus being always straight; in females the elytra are very shiny and the male genitalia with total length of parameres near five times the length of their apex; apex harpoon-like with lateral angle curved projecting almost perpendicular to parameres and inner margins slightly convergent and opened.

In Cherman et al. (2016) Hilarianus anguliceps was synonymized with L. punctaticollis . As it is the Hilarianus type species, this genus was designated the junior synonym of Liogenys ( Cherman et al. 2016).