Liogenys martinezi 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 : 65-69

Liogenys martinezi Cherman , new species

Figs. 7 , 12 C–D, 15

Type material. Holotype, male, labeled ( CEMT): [white typeset] “ ARGENTINA: Neuquen, / Cobunco , XII.1989 / A. Martinez coll.”, [white typeset] “CZMT-CEMT / 0000018075”, [red typeset and handwritten] “ LIOGENYS / MARTI-NEZI / HOLOTYPE / Cherman M.A.”, genitalia mounted . Paratypes (100) labeled [yellow typeset and handwritten] “ LIOGENYS MARTINEZI / PARATYPE Cherman M. A.”: One female and two male paratypes ( CEMT) with same data of the holotype, and labeled with the following sequence of vouchers: [white typeset] “CZMT-CEMT / 0000018076- 78”. One male paratype ( CEMT): [ white typeset] “ ARGENTINA: Mendoza, 9.XI.1987, L. Peña coll.”, [white typeset] “CZMT-CEMT / 0000018096”. Three female paratypes ( DZUP): [white typeset] “ ARGENTINA: Mendoza / RP 180, 20 km S El Nihuil / S35º11’54’’ W68º43’09’’ / Jan-5-6-2003, 1311 m / F.C Ocampo, A.B. T. Smith”, and labeled with the following sequence: [white typeset] “ DZUP / 402744-46 ”. One male ( IADIZA): [white typeset] “RA. Neuquen / 5 km S de Lag. Blanca / 15/01/2007 / G. SanBlas col. / 39º06’56.1’’S 70º00’10.1’’W / 975 msnm”. One male ( DZUP): [white typeset] “ ARGENTINA: Chubut / Península Valdez, Golfo Nuevo / Ea. San Pablo; 50m / 27 Nov. 2005 ”, [white typeset] “ DZUP / 40247 ”. One male ( IADIZA): [white typeset] “ ARGENTINA: Chubut Biedma / Península de Valdes En San Pablo / 30 km SW Pto. Pirámides 42º 41’ / 43.2’’S 64º 10’ 42,7’’W 66 m / 06-I-2010 Coll: G. Flores, G. Cheli, / R. Carrara”. One male ( IADIZA): [white typeset] “ ARGENTINA: Mendoza / Malarg̹e Adesmia Palauco / 2149m 36º8’8.541’’S 69º26’45.168’’W 31-I-2010 / Coll: R. Carara F. Campón / E.Scheibler ”. Five males ( CMNC): [handwritten by A.Martínez] “ ARGENTINA / NEUQUEN / Pilmatué / Shajovskoy-leg. / Coll. Martínez / 7-XI-64”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll”. Each specimen bears a voucher number of the following sequence: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029595–99 ”. One male ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / NEUQUEN / Pilmatue / Co Huayolon 1500m / Gentili-leg. / Coll. Martínez / Ene.-965”, [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029600 ”. One male and one female ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / NEUQUEN / Ayo. Picún Leufú / y Ruta Nac. 40 / Coll. Martínez / Ene.-965”, [typeset, outlined black] “H. & A. HOW-DEN / COLLECTION / ex. A. Martinez coll.”. The male with the voucher: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029601 ”, the female with: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029636 ”. Three males ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / NEUQUEN / Lag. Blanca / Gentili-leg. / Coll. Martínez / Dic.965”, [hardwritten and typeset, outlined black] “ Liogenys / rufoflavus ³ / Moser / A. MARTINEZ-DET. 1990”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”. The males with the following sequence of vouchers: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029603-05 ”. One female ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / NEUQUEN / Lag. Blanca / Gentili-leg. / Coll. Martínez / Dic.965”, [hardwritten and typeset, outlined black] “ Liogenys / rufoflavus ♀ / Moser / A. MARTINEZ-DET. 1990”, [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 00029625 ”. One male ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / NEUQUEN / ZAPALA / Coll. Martínez / Ene.-965”, [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 00029606 ”. Three females ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / NEUQUEN / ZAPALA / Coll. Martínez / Ene.-965”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”. The females with the following sequence of vouchers: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029621-23 ”. One male and one female ( CMNC): [handwritten] “ NEUQUEN / Los Catutos / 10- III-64 ”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”. Male and female with the following vouchers, respectively: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029607 ”, [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029631 ”. One male and two females ( 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.” The male with the voucher: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029609 ”. Females with the following sequence of vouchers: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029639-40 ”. One male and two females ( CMNC): [typeset] “ SA. CUCHILLO CURA / (975 M. S.N.M.) / NEUQUEN-ARG.”, [typeset] “15-XII-74 / LG.M.GENTILI”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”. The male with the voucher: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029610 ”. Females with the sequence of vouchers: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029642-43 ”. One male and three females ( CMNC): [typeset] “EA. LLAMUCO / (1100 M.S.N.M.) / NEUQUEN-ARG.”, [typeset] “18- III-74 / LG.M.GENTILI”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”. The male with the voucher: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029611 ”. The females with the sequence of vouchers: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029632-34 ”. One male ( VMDC): “Argentina Chubut / Trelew / 1 Septiembre1996 / Leg. D. Rojas Lanus ”, [typeset with data matrix barcode] “SCARABS OF / SOUTHERN / SOUTH AMERICA / SSSA3002723 ”. One male ( CMNC): [typeset] “ ARGENTINA: Mendoza / RP 180, 20 km S El Nihuil / S 35º11’54’’ W 68º43’09’’ / Jan-5-6-2003, 1311 m / F.C.Ocampo, A.B. T.Smith”. Seven males and nine females with the data ( CMNC): [typeset] “ ARGENTINA: Chubut / Península Valdez, Golfo Nuevo / Ea. San Pablo; 50 m / 27 Nov. 2005 ”. The males with the sequence of vouchers: [typeset with data matrix barcode] “SCARABS OF / SOUTHERN / SOUTH AMERICA / SSSA3002716-22 ”. The females with the sequence of vouchers: [typeset with data matrix barcode] “SCARABS OF / SOUTHERN / SOUTH AMERICA / SSSA3002742-50 ”. Six males and eight females with the data ( DZUP): [typeset] “ ARGENTINA: Chubut / Península Valdez, Golfo Nuevo / Ea. San Pablo; 50 m / 27 Nov. 2005 ”. The males with the sequence of vouchers: [typeset with data matrix barcode] “SCARABS OF / SOUTHERN / SOUTH AMERICA / SSSA3002710-15 ”. The females with the sequence of vouchers: [typeset with data matrix barcode] “SCARABS OF / SOUTHERN / SOUTH AMERICA / SSSA3002734-41 ”. Six males and nine females with the data ( IADIZA): [typeset] “ ARGENTINA: Chubut / Península Valdez, Golfo Nuevo / Ea. San Pablo; 50 m / 27 Nov. 2005 ”. The males with the sequence of vouchers: [typeset with data matrix barcode] “SCARABS OF / SOUTH-ERN / SOUTH AMERICA / SSSA3002704-09 ”. The females with the sequence of vouchers: [typeset with data matrix barcode] “SCARABS OF / SOUTHERN / SOUTH AMERICA / SSSA3002725-33 ”. One male ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / NEUQUEN / Covunco / Gentili-leg. / Coll. Martínez / Dic.963”, [typeset] “ Howden coll. ex. / A.Martinez coll.”, [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029602 ”. One female ( 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 00029620 ”. One female ( CMNC): [typeset] “ ARGENTINA / Villa Regina / Rio Negro / 20.XI.63 leg. Pena ”, [handwritten and typeset] “ Liogenys / kadleci / det.G. Frey,1970 / n sp”, [typeset, outlined black] “H. & A. HOWDEN / COLLEC-TION / ex. A. Martinez coll.”, [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029626 ”. One female ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / Rio Negro / Valcheta / Coll. Martínez / Dic.992”, [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 00029627 ”. One female ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / RIO NEGRO / Cnel. Gómez / J. Grasso-legit: / Coll. Martínez / NOV.-946”, [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 00029628 ”. Two females (on cards on the same pin) ( CMNC): [handwritten by A. Martínez] “ ARGEN-TINA / RIO NEGRO / Cnel. Gómez / J. Grasso-leg. / Coll. Martínez / Dic.-94”, [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 00029629 ”. One female ( CMNC): [handwritten by A. Martínez] “AR-GENTINA / RIO NEGRO / S. Antonio Oeste / Zunino-leg. / Coll. Martínez / Ene.976”, [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 00029645 ”. Two females ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / RIO NEGRO / S. Antonio Oeste / P. Las Grutas / Bordon-legit / Coll. Martínez / Dic.-973”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”. The females with the following sequence of vouchers: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029646-47 ”. One female ( CASC): [typeset] “ ARGENTINA, Río Negro / San Antonio Oeste / XII-15- 1966, at light / E.I.Schlinger / M.E.Irwin ”, [typeset] “ CASENT / 8426016”. Three females ( CMNC): [handwritten by A. Martínez] “ ARGENTINA / NEUQUEN / Covunco / Gentili-leg. / Coll. Martínez / Dic.963”, [typeset, outlined black] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”. The females with the following sequence of vouchers: [typeset with data matrix barcode] “Canadian Museum of / Musée canadien de la / NATURE / CMNEN 00029614-16 ” .

Holotype and 58 paratypes at CMNC. One paratype at CASC. Four paratypes deposited at CEMT. Eighteen paratypes deposited at DZUP. Eighteen paratypes deposited at IADIZA. One paratype at VMDC.

Diagnosis. Body elongate; yellowish brown or light brown, pronotum shiny, with few bristles, unicolored with elytra or darker ( Fig. 7A ); elytra pruinose and with bristles ( Fig. 7E ); frons with few bristles; longer than clypeus, females with frons swollen and clypeus shorter, weakly emarginate; clypeal lateral margin concave in males, straight in females ( Fig. 12 C–D); antenna with 10 antennomeres; pronotum with uniform length, posterior corners obtusely angulate ( Fig. 7B ); protibia with three equally spaced teeth or space shorter between basal and middle teeth; mesotibiae and metatibiae cylindrical in cross section; apical carinae complete ( Fig. 7D ); males with metatibial spurs equal in length and longer than the diameter of the metatibia; protarsomere II as wide as long; inner margin of male metatibia not or weakly carinate; pygidium slightly convex; subtrapezoidal, apex subquadrate; pygidial disc with bristles throughout ( Fig. 7F ); apex of parameres lanceolate-like, at the base expanded below the plane of the parameres.

Holotype. Male. Length: 10.7 mm; width: 5.0 mm. Light brown, elytra pruinose. Head: distance between eyes four times the width of one eye; frons longer than clypeus; clypeal emargination shallow, weakly angulate, wide; outer sides of anterior teeth parallel, lateral margin concave; distal maxillary palpomere, maximum width two times the apical width; fovea deep, not reaching the midline; antenna with 10 antennomeres, club lighter in color equal in width to the funicle. Thorax: anterior margin of pronotum slightly produced medially; pronotal disc shiny, with punctures fine and sparse; posterior corners sharp, obtusely angulate; hypomere with abundant long bristles; mesepisternum and sides of metaventrite with sparse scales; metacoxae with bristles; distance between mesocoxae and metacoxae twice the metacoxa length; scutellum ogival, wih sparse, fine punctures at the sides. Elytra: pruinose, inconspicuous bristles dispersed randomly; elytral suture and elytron unicolored, weakly elevated; all four elytral ridges weakly defined. Legs: procoxa with bristles; protibia with teeth, basal tooth vestigial, apical tooth the longest; distance between basal and middle teeth shorter than between middle and apical teeth; mesotibia cylindrical and somewhat flattened in cross section, mesotibial surface finely sculptured; mesotibia with two transverse carinae, the apical carina complete; inner margin of metatibia weakly carinate towards the apex, glabrous on inner surface; external surface finely sculptured; metatibia with two transverse carinae, the apical carina complete; metatibial apical spurs equal in shape and length, longer than the diameter of the tibial apex; metatarsomere I equal in size to metatarsomere 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 claw longer and slightly wider than the inferior tooth; distance between teeth longer than the length of inferior tooth. Abdomen: band of scales visible beneath the outer margin of elytra; ventrites with bristles; propygidium scaly; pygidium slightly convex; subtrapezoidal, as long as wide; pygidial width not exceeding distance between spiracles of propygidium; pygidial disc with bristles throughout, bristles thick; pygidial apex subquadrate. Parameres: basal region wider than both sections of the parameres at maximum width, parameral split at 2/3 the length of the basal region; inner margins slightly convex, opened; apex lanceolate-like, inferior margin expanded below the plane of the parameres; parameres in lateral view straight, not coplanar ( Fig. 7G ).

Variation. Male paratypes. Length: 9.5–11.5 mm; width: 4.9–5.5 mm. As the holotype except in the head and pronotum unicolored with the elytra; in protibia the three teeth equally spaced or the basal and middle teeth closer. Female paratypes. Length: 9.4–10.4 mm; width: 4.8–5.2 mm. As the holotype except in the clypeal lateral margins straight, clypeus shorter; elytra less pruinose; and the same variation in the distance between basal and middle teeth on protibia that observed in males.

Etymology. Noun in the genitive case. The species is dedicated to Dr. Antonio Martínez, the collector of the holotype and part of the paratypes. He was one of the most prolific workers on scarab beetles in South América, who produced a large body of work. His large particular collection was purchased by Henry and Anne Howden and transferred to the Canadian Museum of Nature in Ottawa.

Type locality. ARGENTINA, Neuquén, Cobunco (Covunco, 38°32’00.0’’S 70°15’00.1’’W) .

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

Remarks. Liogenys martinezi new species strongly resembles L. kuntzeni in the body size and color, somewhat the shape of the clypeus and pygidium, elytra with bristles, and metatibia with apical transverse carina complete in males. Liogenys martinezi new species differs from this species (in parenthesis) in the clypeal emargination shallower, males with clypeus longer and lateral margins strongly concave ( Fig. 12C ) (clypeus slightly convex and teeth parallel ( Fig. 11E )), females with clypeal lateral margins straight, teeth following the margin of clypeus (clypeal lateral margins slightly convex, teeth subparallel); pronotum shorter, posterior corners obtusely angulate (subangulate); males and females with three protibial teeth (males with two protibial teeth, for variations see remarks of L. kuntzeni ); mesotibia with two transverse carinae strongly marked and with long setae in males (carinae less marked and setae shorter); metatibial spurs equal in length, longer than the diameter of the tibial apex (spurs with different length, the longer spur equal in length to the diameter of the tibial apex); males with protarsomere II as wide as it is long (protarsomere II longer than wide), and parameres with subtle differences in shape at the apex.

Figures

FIGURE 7. Liogenys martinezi Cherman, new species, male holotype views: A) dorsal, B) clypeus and pronotum, C) pygidium, D) lateral, E) detail of pruinose elytron, and parameres views: F) dorsal, G) 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.