Liogenys calcaratus Frey, 1970: 283 Krajčík 2012: 144 Liogenys calcarata : Evans 2003: 207 Evans & Smith 2009: 176 Cherman et al. 2016: 759 Cherman et al. 2017: 16 Liogenys Guérin-Méneville, 1831 (Coleoptera: Scarabaeidae: Melolonthinae) from the southern South American Transition Zone and boundaries: taxonomic overview with four new species Cherman, Mariana A. Basílio, Daniel S. Mise, Kleber M. Frisch, Johannes Smith, Andrew B. T. Almeida, Lúcia M. Zootaxa 2020 2020-12-18 4896 1 46 84 Frey, 1970 Frey 1970 [151,518,330,357] Insecta Melolonthidae Liogenys Animalia Coleoptera 6 52 Arthropoda species calcarata   Figs. 2, 13E, 14      Liogenys calcaratus Frey, 1970: 283;  Krajčík 2012: 144(checklist).     Liogenys calcarata: Evans 2003: 207(checklist);  Evans & Smith 2009: 176(checklist);  Cherman et al.2016: 759(systematics);  Cherman et al.2017: 16(taxonomy).   Type material.  Male holotypeof  Liogenys calcarata( NMHB): [white, typeset] “ ARGENTINA/  20 kmN. La Rioja/ 24.9.68 leg. Pena”, [red typeset] “TYPE”, [white typeset and handwritten] “Type / Liogenys/ calcaratus / n. sp. / det. G. Frey, 1970”, genitalia mounted. One male paratype( NHMB),  five malesand one female paratypes( AMNH) with the same data of the holotype.  Male paratype( ZMHB): [white, typeset] “ ARGENTINA/  20 kmN. La Rioja/ 24.9.68 leg. Pena”, [red typeset] “PARATYPE”, [white, typeset and handwritten] “ Liogenys/ calcaratus / n. sp. / det. G. Frey, 1970”.  Four maleand two female paratypes( CMNC): [white, typeset] “ ARGENTINA/  20 kmN. La Rioja/ 24.9.68 leg. Pena”, [yellow handwritten and typeset] “ LIOGENYS/ CALCARATUS / FREY / PARATYPE”, [white, typeset and handwritten] “ Liogenys/ calcaratus / det. G. Frey, 1970/ n sp”, [white, typeset] “H. & A. HOWDEN / COLLECTION / ex. A. Martinez coll.”.  Non-type material(12).  ARGENTINA.  San Juan: El Baldecito, Valle Fertil,  XII.1964, A. Martínez, 1 male( CMNC);   Buenos Aires: Estancia Barraú(  30 kmSW Villa Iris),  XII.1946, A. Martínez, 1 male( CMNC);  Puán, Felipe Solá,  XII.1953, A. Martínez, 1 female( CMNC);   San Luis: Arizona( 18 kmS),  250 m,  18–23.I.1982, H. & A. Howden, 1 female( CMNC);   Mendoza: San Rafael,  6.XII.1988, L. Peña, 4 females( INPA);   Río Negro: Coronel Gómez,  I.1958, A. Martínez, 2 females( NHMUK);   Chubut: Dolavon, Angostura,  1.V.2011, 43°18’36’’S, 65°42’36’’W, D. Rojas Lanus, 1 female( VMDC).   Diagnosis. Body elongate; dull yellow ( Fig. 2A), pronotum shiny, unicolored with elytra; elytra shiny or semiopaque, with bristles, inconspicuous bristles throughout the elytron and also on frontoclypeal surface; clypeal emargination deep, wide and rounded; clypeal lateral margin convex, blunt projected; antenna with 10 antennomeres; pronotal posterior corners rounded ( Fig. 2B); protibia with three teeth, distance between basal and middle teeth longer than the distance between middle and apical teeth; mesotibia quadrate in cross section ( Fig. 2D); pygidium flat; subtrapezoidal; pygidial disc smooth, inconspicuous bristles throughout, bristles longer towards the apex ( Fig. 2C); in males inner margin of metatibia weakly carinate towards apex; metatibial apical spurs of different lengths and shape, the longer spur equal to the diameter of the tibial apex, the shorter spur wider and projected laterally ( Fig. 2E); protarsomere II very wide; inner margins of parameres concave; parameres three times the length of the apex; apex lanceolate, outer margins expanded in a plane below at the base ( Fig. 2F).   Redescription. Length: 8.2–9.5 mm; width: 3.4–4.8 mm. Dull yellow. Head. Distance between eyes twice the width of one eye; frons swollen, longer than the clypeus, frontoclypeal surface with inconspicuous bristles; clypeal emargination deep, wide and rounded; outer sides of anterior teeth subparallel; clypeal lateral margin convex, blunt projected; canthus exceeding the outer margin of the eye; distal maxillary palpomere, maximum width slightly wider than the apex; fovea deep, very small, only at the base; 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 rounded; hypomere with short bristles; mesepisternum, sides of metaventrite and metacoxae with bristles; disc of metaventrite with abundant spine-like bristles; distance between mesocoxae and metacoxae twice the metacoxa length; scutellum ogival, smooth. Elytra: shiny or semiopaque, inconspicuous bristles throughout the elytron, a row of short bristles on the fourth ridge; elytral suture and elytron unicolored, slightly elevated; all four elytral ridges barely noticeable. Legs: procoxa with bristles, weakly scaly and punctate; protibia with three teeth equal in size; distance between basal and middle teeth longer than the distance between middle and apical teeth; mesofemur with thick, erect bristles along the inferior margin; mesotibia quadrate in cross section, mesotibial surface smooth; mesotibia with two transverse carinae present posteriorly; metafemur with thick, erect bristles along the inferior margin; males with inner margin of metatibia weakly carinate towards apex; surface finely sculptured, almost smooth; metatibia with two transverse carinae present posteriorly; males with metatibial apical spurs of different lengths and shape, the longer spur equal to the diameter of the tibial apex, the shorter spur wider and projected laterally; metatarsomere I shorter and equal in width to tarsomere II; protarsomeres and mesotarsomeres I–IV enlarged, protarsomere II very wide; protarsomeres less than twice wider than the mesotarsomeres; claw bifid, symmetrical, superior tooth of claw longer and wider than the inferior tooth; distance between teeth longer to the length of inferior tooth. Abdomen: ventrites with erect bristles at the disc, more abundant on ventrites II and III; propygidium with few bristles; pygidium flat; subtrapezoidal; pygidial width not exceeding distance between spiracles of propygidium; pygidial disc smooth, inconspicuous bristles throughout, a few longer bristles towards the apex; pygidial apex subquadrate. Parameres: basal region slightly wider than both sections of the parameres at its maximum width, parameral split at 2/3 the length of the basal region; inner margins concave; three times the length of the apex; apex lanceolate, outer margins weakly expanded in a plane below at the base; parameres in lateral view convex, coplanar ( Fig. 2G).    Typelocality. ARGENTINA. 20 kmN La Rioja[near El Cantadero, 29°14’28.9’’S 66°51’20.3’’W].  Geographical distribution. ARGENTINA( La Rioja,  San Juan,  Buenos Aires,  Mendoza, San Luis, Río Negro, Chubut).   Remarks.  Liogenys calcarataresembles  L. flaveolain the body color, size, and in the shape of tibiae and pygidium.  Liogenys calcaratadiffers from  L. flaveola(in parenthesis) in the clypeal emargination deep (shallow); pronotal punctures finer; pygidial disc with bristles (glabrous); males with metatibial spurs uneven, the shorter spur wider and asymmetrically projected (truncate but not projected). The parameres of both species have apex lanceolate, in  L. calcaratathe outer margins are expanded in a plane below (in one plane). This species also resembles  L. kuntzeniin the shape of the apex lanceolate, and at its base the outer margin is also expanded in a plane below. In the case of  L. calcarata, the expanded portion at the base of the apex is very narrow. 5891900321 NMHB Pena Argentina G. Frey La Rioja 6 52 1 1 La Rioja holotype 5891900307 [685,1015,639,665] NHMB Pena Argentina G. Frey La Rioja 6 52 1 1 La Rioja paratype 5891900311 AMNH Pena Argentina G. Frey La Rioja 6 52 2 1 La Rioja paratype 5891900308 ZMHB Pena Argentina G. Frey La Rioja 6 52 1 1 La Rioja paratype 5891900322 CMNC Pena Argentina G. Frey La Rioja La Rioja 6 52 2 1 La Rioja paratype 3003785366 1964-12 CMNC El Baldecito & A. Martinez Argentina Valle Fertil 6 52 1 1 San Juan 3003785354 [270,1360,927,954] 1946-12 CMNC Martinez Argentina Estancia Barrau 6 52 1 1 Ciudad Autonoma de Buenos Aires 3003785328 1953-12 CMNC A. Martinez Argentina Felipe Sola Puan 6 52 1 1 Buenos Aires 3003785301 1982-01-18 1982-01-23 1982-01-18 CMNC H. & A. Howden Argentina 250 Arizona 6 52 1 1 San Luis 3003785445 [476,1159,999,1025] 1988-12-06 INPA L. Pena Argentina San Rafael 6 52 4 4 Mendoza 3003785452 1958-01 NHMUK A. Martinez Argentina Coronel Gomez 6 52 2 2 Rio Negro 3003785374 2011-05-01 VMDC D. Rojas Lanus Argentina -43.309998 Angostura 19 -65.71 Dolavon 6 52 1 1 Chubut