DIPLOTAXINI

Cherman, Mariana A., Basílio, Daniel S., Clarkson, Bruno, Agostinis, André O., Smith, Andrew B. T., Vaz-De-Mello, Fernando Z. & Almeida, Lúcia M., 2024, New and revised taxa of Neotropical Diplotaxini (Coleoptera: Melolonthidae): do they change the existing relationships? Revisiting systematics with morphological and molecular data, Zoological Journal of the Linnean Society 201 (1), pp. 98-135 : 108

publication ID	https://doi.org/ 10.1093/zoolinnean/zlad115
publication LSID	lsid:zoobank.org:pub:E6D9AF7E-F0AD-4656-B2F2-7FBFAA0312B3R
DOI	https://doi.org/10.5281/zenodo.11247695
persistent identifier	https://treatment.plazi.org/id/03D18442-FFC6-FF83-32EE-FB6B5CE2F804
treatment provided by	Plazi
scientific name	DIPLOTAXINI
status

Treatment

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 View Figure 4 ); sutural ridge of elytra not narrowed posteriad ( Fig. 6A View Figure 6 ); galea of maxilla curved, not forming an angle at the apex of its external margin ( Fig. 4D View Figure 4 . ............................................................................................................................................................................................................................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 View Figure 4 ); propygidium entirely exposed; pygidium subquadrate; elytra flattened, apex of sutural ridge of elytra rounded ( Fig. 14C View Figure 14 ) ...................................................... 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 View Figure 14 ) .................. ............................................................................................................................................................................................................ Diplotaxis

3. Frons and clypeus coplanar; concavity on disc of mentum and arched transverse carina absent ( Fig. 15A View Figure 15 ) ................. Pacuvia

-. Frons and clypeus not coplanar, broad concavity on disc of mentum limited by arched transverse carina ( Fig. 15B View Figure 15 ).............4

4. Inner margin of both eyes more-or-less convergent ( Fig. 15D, E, G, H View Figure 15 ): anterior margin of clypeus widely rounded ( Fig. 15D View Figure 15 ) or subemarginate ( Fig. 15E View Figure 15 ), never forming tooth-like projections; frons and clypeus medially flattened, not concave ............................................................................................................................................................................................................................5

-. Inner margin of both eyes parallel ( Fig. 15C, F View Figure 15 ); anterior margin of clypeus emarginate, forming tooth-like projections ( Fig. 15C View Figure 15 ); frons and clypeus medially flattened or concave ............................................................................................................. Liogenys

5. Clypeus rounded, sometimes anterior margin narrowly emarginate ( Fig. 15D View Figure 15 ); apex of both mandibles forming obtuse angle, seen in frontal view of head ( Fig. 13B View Figure 13 ); apex of sutural ridge of elytra rounded or subangulate ( Fig. 14B View Figure 14 ), subapical callus of elytra distinct on apex, more-or-less defined ( Fig. 7I View Figure 7 )........................................................................................ Pachrodema

-. Clypeus trapezoidal, subemarginate ( Figs. 8B View Figure 8 , 9A View Figure 9 , 10B View Figure 10 , 15E View Figure 15 ); apex of both mandibles forming acute angle, seen in frontal view of head ( Fig. 13A View Figure 13 ); apex of sutural ridge of elytra sharp, right or obtuse-angulate ( Fig. 14F View Figure 14 ), subapical callus of elytra absent ( Fig. 9C View Figure 9 ) ............................................................................................................................................................................ Careocallus