New and revised taxa of Neotropical Diplotaxini (Coleoptera: Melolonthidae): do they change the existing relationships? Revisiting systematics with morphological and molecular data Author Cherman, Mariana A. Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81531 - 980, Curitiba, Paraná, Brazil & Departamento de Biologia e Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Av. Fernando Correia, no. 2367, Boa Esperança, 78060 - 900, Cuiabá, Mato Grosso, Brazil marianabioar@gmail.com Author Basílio, Daniel S. Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81531 - 980, Curitiba, Paraná, Brazil Author Clarkson, Bruno Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81531 - 980, Curitiba, Paraná, Brazil & Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil, 4365, Pavilhão Mourisco, Manguinhos, 21040 - 360, Rio de Janeiro, Rio de Janeiro, Brazil & Laboratório de Entomologia e Fitopatologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, 28013 - 602 Campos dos Goytacazes, Rio de Janeiro, Brazil Author Agostinis, André O. Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81531 - 980, Curitiba, Paraná, Brazil Author Smith, Andrew B. T. Canadian Museum of Nature, 1740 Chemin Pink, Gatineau, Quebec, J 9 J 3 N 7, Canada Author Vaz-De-Mello, Fernando Z. Departamento de Biologia e Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Av. Fernando Correia, no. 2367, Boa Esperança, 78060 - 900, Cuiabá, Mato Grosso, Brazil Author Almeida, Lúcia M. Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81531 - 980, Curitiba, Paraná, Brazil text Zoological Journal of the Linnean Society 2024 2023-10-09 201 1 98 135 http://dx.doi.org/10.1093/zoolinnean/zlad115 journal article 10.1093/zoolinnean/zlad115 0024-4082 11241094 E6D9AF7E-F0AD-4656-B2F2-7FBFAA0312B3R Homalochilus nigripennis Cherman , sp. nov. ( Fig. 6A–G ) Type material ZooBank: urn:lsid:zoobank.org:act: 51B1BCAE-E8E3-4ED7- B406-D5691B40352A Homalochilus nigripennis holotype , ♂ , (NHMB): [white typeset] ‘Humahuaca/ Argentina / 2950 m , I.56’, [white handwritten] ‘ Homalochilus /niger Blanch’, [white, outlined black, typeset and handwritten] ‘ Homalochilus /puntatostriatus/ Bl/ det. Cherman M. A. 2018’, [red typeset] ‘ HOMALOCHILUS / NIGRIPENNIS/ HOLOTYPE /Cherman M. A.’, genitalia mounted. Paratypes (117), all bearing the label [yellow typeset and handwritten] ‘ HOMALOCHILUS /NIGRIPENNIS/ PARATYPE /Cherman M. A.’. Twenty-four ♀ and 56 ♂ paratypes (NHMB) with the same data as the holotype . Among those, one ♀ and eight ♂ paratypes with an additional label [white, outlined black, typeset and handwritten] ‘ Homalochilus niger /det. 1964/A. Martínez’. One ♀ and five ♂ paratypes (NHMB): [white typeset] ‘Cienaguilla, Arg./ Jujuy , 3500m / Pena, 9.2.70’. One ♂ paratype (MZUC): [white handwritten] ‘1340’, [white handwritten] ‘ Argentina /Humahuaca/ Jujuy Bosq/II.44’, [white typeset and handwritten] ‘ Homalochilus / punctatostriatus/M.A. Cherman det. 2016’. One ♂ paratype (MZUC): [white handwritten] ‘1341’, [white handwritten] ‘ Argentina /Humahuaca/ Jujuy Bosq/II.44’, [white typeset and handwritten] ‘ Homalochilus / niger Blanch /R. Gutierrez- Det ♂ /52’. One ♂ paratype (CMNC): [white typeset] ‘ ARGENTINA /Humahuaca/ 6 January 1956 / 2950 m .s.n.m.’. One ♂ and one ♀ paratypes (CMNC): [white handwritten] ‘ ARGENTINA /Do Cochinoca/ Jujuy /Tres Cruces/Coll. Martínez/Dic.-944’, [white typeset] ‘H. & A. HOWDEN/ COLLECTION/ ex. A.Martinez coll.’. One ♂ paratype (CMNC): [white typeset and handwritten] ‘ ARGENTINA / Jujuy /La Quiaca/COLL. DURET/1944/Cipolletti leg.’, [white typeset] ‘H. & A. HOWDEN/COLLECTION/ ex. A.Martinez coll.’, [white typeset and handwritten] ‘ Homalochilus / niger/Blanch./A.MARTINEZ-DET.1956’. One ♀ paratype (CMNC): [white typeset] ‘Sgo. de ESTERO/RIO SALADO/ WAGNER COL’, [white typeset] ‘H. & A. HOWDEN/ COLLECTION/ ex. A.Martinez coll.’. One ♂ and one ♀ paratypes mounted on the same pin (CMNC): [white handwritten] ‘ ARGENTINA / JUJUY /La Quiaca/Cipolletti-leg./ Coll. Martínez/Dic.-943’, [white typeset] ‘H. & A. HOWDEN/ COLLECTION/ ex . A.Martinez coll.’, [white typeset and handwritten] ‘ Homalochilus /niger/Bl./A.MARTINEZ-DET.1956’. Ten ♂ and three ♀ paratypes (UMRM), three ♂ and one ♀ paratype (CMNC), and three ♂ and one ♀ paratype (DZUP): [white typeset] ‘ ARGENTINA /Humahuaca/ 6 January 1956 / 2950 m . s. n. m.’. Two ♂ paratypes (UMRM): [white typeset] ‘ ARGENTINA /Tres Cruces/ 6 Enero 1956 / 3400 m .’. Holotype and 86 paratypes deposited at NHMB . Ten paratypes at CMNC . Three paratypes at CEMT . Two paratypes at DZUP . Fifteen paratypes at UMRM . One paratype at MZUC . Diagnosis Body, head, and pronotum entirely black, semiopaque; elytra entirely black, semiopaque, unicolorous with body ( Fig. 6A ); clypeus slightly lobed, head as long as pronotum ( Fig. 6B ); fovea of distal maxillary palpomere reaching the midline; club of antenna slightly shorter than the funicle; anterior margin of pronotum slightly constricted; disc coarsely and roughly punctate; pronotal posterior corners subangulate ( Fig. 6B ); metacoxae slightly shorter than the distance between mesocoxae and metacoxae; elytra near two times longer than the pronotum; four elytral ridges, both outermost less noticeable, sparse long bristles along the sutural ridge, scattered bristles on disc, erect long setae on apex of elytra present; protarsomere I longer than tarsomere II in both sexes; disc of ventrites with long bristles ( Fig. 6C ); pygidium subtrapezoidal ( Fig. 6D ); parameres with apex curved downwards, forming right angle with the longitudinal axis ( Fig. 6F, G ). Figure 6. Homalochilus nigripennis . Male holotype habitus (A); head and pronotum (B); lateral (C); posterior (D) views; metatibial apex (E); parameres in dorsal (F) and lateral (G) views. White arrow indicates the longest spur. Holotype description Length: 8.0 mm; width: 4.9 mm . Body short, semiopaque, sides parallel, body, head, and pronotum black, elytra on disc red and on margins black; glabrous; eyes almost entirely placed laterally, frons almost as wide as the anterior margin of pronotum; frons and clypeus coplanar; clypeus truncate; galea of maxilla with two teeth, the apical stronger; distal maxillary palpomere acuminate, fovea deep, reaching the midline of the palpomere; labium widened at the transverse midline, slightly wider than it is long; sloped from the transverse carina towards apex; apical emargination wide and rounded; antenna black, with nine antennomeres, club and as long as the funicle; pronotal anterior corners scaly, fused with hypomeron; pronotal disc coarsely punctate, simple punctures sparsely disposed; posterior corners obtuse angulate; mesocoxae and metacoxae almost equal in length; scutellum long; elytra flattened, near 1.5 longer than the pronotum; four elytral ridges, the outermost less noticeable; subapical callus strong, callus and apex of the sutural ridge at the same level; three protibial teeth, the basal tooth shorter than the other two (angle obtuse in relation to axis); mesotibia cylindrical, two transverse carina, the apical complete; metatibial spurs strongly uneven ( Fig. 6E ), the longest almost two times the diameter of the tibial apex; all tarsi cylindrical (in both sexes), protarsal claws simple, mesotarsal and metatarsal claws bifid (in females all claws bifid); protarsomere I slightly shorter than tarsomere II (in both sexes); propygidium exposed, scaly in basal region, mostly glabrous; pygidium flat, as wide as it is long; subtrapezoidal; pygidial disc glabrous, scaly basally; basal region strongly sulcate, basally widened and slightly swollen; parameres narrow, as long as the basal region, apex curved downwards, forming right angle with the longitudinal axis. Variation Male paratypes : Length: 8.0– 9.4 mm ; width: 4.2–5.0 mm. Female paratypes : Length: 8.0– 9.6 mm ; width: 4.2–5.0 mm. The females also have the apical carina on mesotibia complete, while the metatibial spurs are strongly uneven especially in males. Type locality ARGENTINA . Jujuy , Humahuaca [23°12ʹ45.4ʹʹS 65°20ʹ54.0ʹʹW]. Geographical distribution ARGENTINA ( Jujuy , Santiago del Estero ) . Remarks Gutiérrez (1952: 213 , 214) erroneously used part of the type series in his redescription of Homalochilus niger .