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 IDENTIFICATION KEY TO NEW WORLD DIPLOTAXINI [modified from Cherman et al. (2017) ] 1. Division between clypeus and frons distinct [see Cherman et al. (2016) for more details] ( Fig. 4A ); sutural ridge of elytra not narrowed posteriad ( Fig. 6A ); galea of maxilla curved, not forming an angle at the apex of its external margin ( Fig. 4D . ............................................................................................................................................................................................................................2 -. Division between clypeus and frons indistinct; sutural ridge of elytra strongly narrowed posteriad; galea of maxilla straight, forming an angle at the apex of its external margin..................................................................................................................................3 2. Pronotal anterior corners reduced, evenly continuous with hypomeron ( Fig. 4B ); propygidium entirely exposed; pygidium subquadrate; elytra flattened, apex of sutural ridge of elytra rounded ( Fig. 14C ) ...................................................... Homalochilus -. Pronotal anterior corners distinctly elevated, hypomeron not continuous with dorsal surface; pygidium suboval; propygidium mostly hidden by elytra; elytra flattened or convex, apex of sutural ridge of elytra angled ( Fig. 14A ) .................. ............................................................................................................................................................................................................ Diplotaxis 3. Frons and clypeus coplanar; concavity on disc of mentum and arched transverse carina absent ( Fig. 15A ) ................. Pacuvia -. Frons and clypeus not coplanar, broad concavity on disc of mentum limited by arched transverse carina ( Fig. 15B ).............4 4. Inner margin of both eyes more-or-less convergent ( Fig. 15D, E, G, H ): anterior margin of clypeus widely rounded ( Fig. 15D ) or subemarginate ( Fig. 15E ), never forming tooth-like projections; frons and clypeus medially flattened, not concave ............................................................................................................................................................................................................................5 -. Inner margin of both eyes parallel ( Fig. 15C, F ); anterior margin of clypeus emarginate, forming tooth-like projections ( Fig. 15C ); frons and clypeus medially flattened or concave ............................................................................................................. Liogenys 5. Clypeus rounded, sometimes anterior margin narrowly emarginate ( Fig. 15D ); apex of both mandibles forming obtuse angle, seen in frontal view of head ( Fig. 13B ); apex of sutural ridge of elytra rounded or subangulate ( Fig. 14B ), subapical callus of elytra distinct on apex, more-or-less defined ( Fig. 7I )........................................................................................ Pachrodema -. Clypeus trapezoidal, subemarginate ( Figs. 8B , 9A , 10B , 15E ); apex of both mandibles forming acute angle, seen in frontal view of head ( Fig. 13A ); apex of sutural ridge of elytra sharp, right or obtuse-angulate ( Fig. 14F ), subapical callus of elytra absent ( Fig. 9C ) ............................................................................................................................................................................ Careocallus