Liogenys lucialmeidae Cherman, 2020

Cherman, Mariana A., Basílio, Daniel S., Mise, Kleber M., Frisch, Johannes, Smith, Andrew B. T. & Almeida, Lúcia M., 2020, Liogenys Guérin-Méneville, 1831 (Coleoptera: Scarabaeidae: Melolonthinae) from the southern South American Transition Zone and boundaries: taxonomic overview with four new species, Zootaxa 4896 (1), pp. 46-84 : 62-63

Liogenys lucialmeidae Cherman , new species

Figs. 6 , 12 A–B, 15

Type material. Holotype, male, labeled ( CMNC): [white typeset] “ ARGENTINA: Mendoza / Reserva La Payunia, Los Relinchos / S36º00’59’’W68º48’39’’ / Jan-6-2003, 1714 m / F.C. Ocampo, A.B. T. Smith”, [red typeset and handwritten] “ LIOGENYS / LUCIALMEIDAE / HOLOTYPE / Cherman M.A.”, genitalia mounted . Paratypes (20) labeled [yellow typeset and handwritten] “ LIOGENYS LUCIALMEIDAE / PARATYPE / Cherman M. A.”: six females with the label (four at CMNC, two at DZUP (402743-44)): [white typeset] “ ARGENTINA: Mendoza / 1 km Reserva Telteca / S32º 18’40’W67º54’08’’ / Jan-04- 2003, 540 m / F.C. Ocampo, A.B. T. Smith ”. One male ( IADIZA): [white handwritten] “ Malarg ̹e: A 7 km de / Ranquil Norte , camino / a Barrancas [Neuquen Prov.] / 23- I-79 / Sergio Roig ”, [circle full blue, indicating C. Berg collection]. One male and one female paratypes ( IADIZA): [white typeset] “ ARGENTINA: Chubut Peninsula de / Valdés 8km S Punta norte / 42º12’20’’S 63º52’5,9’’W 42 m / 14-I-2010 Coll: G. Flores, G. Cheli, / R. Carrara”. One male paratype ( AMNH): [white typeset] “ ARGEN-TINA / El Bolson, Rio / Negro / 19 [space] / A. Kovacs ”. Two males mounted on cards on the same pin ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / RIO NEGRO / Cnel. Gómez / J. Grosso-leg. / Coll. Martínez / NOV-945”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”, [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029587 ”. One male ( CMNC): [typeset] “ARG: Nuequin / nr Zapala / 19–21.XII.1965 / A. Martinez ”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / Ottawa, Canada”, [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029588 ”. One male ( CMNC): [typeset] “ARG: Nuequin / nr Zapala / 19–21.XII.1965 / A. Martinez ”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / Ottawa, Canada ”, [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029589 ”. One male ( CMNC): [typeset] “ 24-XI-1955 / Villa Regina / Pcia. Rio-Negro / Lg. E.Fleiss ”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”, [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029590 ”. One male ( CMNC): [typeset] “ SA. VACA MUERTA / (950 M. S.N.M.) / NEUQUEN-ARG.”, [typeset] “14-XII-74 / LG.M.GENTILI”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”, [typeset with data matrix barcode] “ Cana-dian Museum of / Musée canadien de la / NATURE / CMNEN 00029591 ”. One male and three females ( NHMW): [typeset] “ ARGENTINIEN / Neuquen Anelo / 26.10.1981 leg. KOVAC ”. The male with the voucher: [typeset with data matrix barcode] “SCARABS OF / SOUTHERN / SOUTH AMERICA / SSSA3002724 ”. The females with the sequence of vouchers: [typeset with data matrix barcode] “SCARABS OF / SOUTHERN / SOUTH AMERICA / SSSA3002787-89 ” .

Holotype and 10 paratypes deposited at CMNC. Two paratypes deposited at DZUP. Three paratypes deposited at IADIZA. One paratype deposited as AMNH. Four paratypes at NHMW.

Diagnosis. Body elongate; dull yellow, pronotum and elytra unicolored or pronotum slightly darker ( Fig. 6A ), frons swollen, mainly in females; in males clypeal emargination deep, subangulate to rounded and wide; in females clypeus short and weakly emarginate ( Fig. 12 A–B); antennae with 10 antennomeres; pronotum and head equal in length, posterior corners subangulate ( Fig. 6B ); in males pronotum with maximum length medially, in females pronotum with uniform length throughout ( Fig. 12 A–B); elytra semi-opaque, with bristles uniformly, in males sometimes somewhat not uniformly pruinose; pygidium elongate or as wide as it is long, disc smooth, with bristles throughout ( Fig. 6C ); males with two protibial teeth; metatibia with inner margin weakly carinate towards the apex and one transverse carina incomplete ( Fig. 6 D–E); parameres forming a concavity at the midline; slightly narrowed subapically; apex sagittate, curved upwards ( Fig. 6 F–H).

Holotype. Male. Length: 9.4 mm; width: 4.3 mm. Uniform dull yellow. Head: distance between eyes almost three times the width of one eye; frons equal in length to clypeus, swollen; clypeal emargination deep, subangulate, wide; outer sides of anterior teeth subparallel, apparently following the lateral margin of clypeus, lateral margin straight; distal maxillary palpomere, maximum width two times the apical width; fovea deep, reduced to a point at the widest part of the palpomere; antenna with 10 antennomeres, club lighter in color than funicle. Thorax: anterior margin of pronotum slightly produced medially; pronotal disc with punctures fine and sparse; posterior corners subangulate, angle obtuse; hypomere with short bristles and a few scales at the inner margen; mesepisternum, sides of metaventrite and metacoxae with sparse bristles; distance between mesocoxae and metacoxae twice the metacoxa length; scutellum ogival, with a few punctures. Elytra: semi-pruinose, bristles dispersed randomly; elytral suture and elytron unicolored, weakly elevated; all four elytral ridges weakly defined ( Fig. 6A ). Legs: procoxa weakly scaly; protibia with two teeth equal in size; mesotibia cylindrical and somewhat flattened in cross section, mesotibial surface finely sculptured; mesotibia with one transverse carina only demarked posteriorly; inner margin of male metatibia weakly carinate towards the apex; surface finely sculptured; metatibia with one transverse carina incomplete; metatibial apical spurs of different lengths and shape, the longer spur equal to the diameter of the tibial apex, the shorter spur wider, truncate, and slightly projected downwards; metatarsomere I slightly shorter and equal in width to tarsomere II; protarsomeres and mesotarsomeres I–IV enlarged, protarsomere II as wide as long; mesotarsomeres less enlarged than the protarsomeres; claw bifid, symmetrical, superior tooth of a claw longer and slightly wider than the inferior tooth; distance between teeth longer than the length of inferior tooth. Abdomen: ventrites with sparse bristles; propygidium with bristles; pygidium slightly convex; subtrapezoidal, as long as wide; pygidial width not exceeding distance between spiracles of propygidium; pygidial disc smooth and with bristles throughout; pygidial apex subquadrate. Parameres: basal region as wide as both sections of the parameres at maximum width, parameral split at 2/3 the length of the basal region; inner margins convex at the dorsal plane, forming a concavity at the ventral plane; slightly narrowed subapically; apex sagittate, curved upwards; parameres convex in lateral view.

Variation. Male paratypes. Length: 10.0– 11.4 mm; width: 4.4–5.0 mm. As the holotype except in the lateral margin of clypeus more concave. Female paratypes. Length: 9.6–10.9 mm; width: 4.8–5.5 mm. As the holotype except in the clypeus short and weakly emarginate; pronotum shorter; elytral ridges more marked; and three protibial teeth.

Etymology. Noun in the genitive case. The species is dedicated to Dr. Lúcia Massutti de Almeida, a renowned Brazilian Coleopterist and mentor of the first author.

Type locality. ARGENTINA, Mendoza, Reserva La Payunia, Los Relinchos , 36º00’59’’S 68º48’39’’S, 1714 m .

Geographical distribution. ARGENTINA (Mendoza, Neuquén, Río Negro, Chubut) .

Remarks. Liogenys lucialmeidae new species resembles L. flavida in the body size and color; shape of the clypeus, especially in females ( Fig. 11 C–D); elytra with bristles; males with two protibial teeth and metatibia with one transverse carina incomplete. Liogenys lucialmeidae new species differs in the clypeal emargination deep in males (shallow); antennae with 10 antennomeres (9 antennomeres); pronotum shorter; males with inner margin of metatibia weakly carinate towards the apex (distinctly carinate); metatibia with the transverse carina more strongly defined; and the different shape of the parameres. The new species also resembles L. kuntzeni , especially the females in the shape of the clypeus ( Fig. 11 E–F), differing from this species (in parenthesis) in the clypeal emargination rounder in males (angulate); lateral margins of clypeus straight or slightly concave but teeth never parallel (slightly convex, teeth parallel); females with the clypeal teeth even less noticeable and pronotum shorter; pygidium longer; males with one metatibial transverse carina incomplete (complete); and the shape of the parameres are different.

Figures

FIGURE 6. Liogenys lucialmeidae Cherman, new species, male holotype views: A) dorsal, B) clypeus and pronotum, C) pygidium, D) lateral, E) meso- and metatibiae, and parameres views: F) dorsal, G) dorsolateral, H) lateral.

FIGURE 11. Dimorphism in clypeus. Liogenys flaveola Moser, 1924: A) male, B) female; L. flavida Moser, 1918: C) male, D) female; L. kuntzeni Moser, 1921: E) male, F) female; L. rufoflava Moser, 1918: G) male, H) female.

FIGURE 12. Dimorphism in clypeus. Liogenys lucialmeidae Cherman, new species: A) male, B) female; L. martinezi Cherman, new species: C) male, D) female; L. maxillaricuspis Cherman, new species: E) male, F) female.