Cheberdord Allsopp, 2025

Cheberdord Allsopp , new genus

urn:lsid:zoobank.org:act:D2AF10B0-FDBE-4D0E-A3E8-1CC24283AEA7

Type species. Holotrichia burmeisteri Brenske, 1892 View in CoL , hereby designated.

Description. Body 17.5–23.0 mm long. Colour yellow-brown with head, pronotum, scutellum and profemora brown-red, pronotum may be dark brown; elytra ranging from light yellow-brown to a mahogany brown. Mentum flat. Labrum strongly concave, appearing bilobed, level with anterior face of clypeus. Antennae of 10 antennomeres, club of 3 long lamellae, antennomere 7 may be flattened and leaf-like, club of male about 0.85-1 times length of scape, that of female about 0.5 times as long as scape. Anterior face of clypeus flat, indistinctly punctured; anterior clypeal margin arcuately rounded, reflexed, sometimes weakly but distinctly emarginate medially. Upper clypeus and frons with large, round punctures separated by less than twice their diameters. Pronotum wider than base of elytra, anterior margin broadly, weakly emarginate, posterior margin sinuate with a barely perceptible marginal line, lateral margin crenate, broadly, strongly rounded, anterolateral angle bluntly angulate, posterolateral angle slightly produced, blunt, surface smooth, shining, fine punctures separated by 1–3 times their diameters. Elytra smooth, shining, evenly punctured, strial punctures scarcely separable from other punctures, intervals 1, 3, 5 and 7 feebly convex, each puncture with a small, scarcely visible, white seta; epipleuron with a single row of intermixed long and short setae or with just short setae (0.5 mm long) forming a fringe visible in dorsal view, long setae about 1.0 mm long basally, decreasing in length towards apex. Pygidium nearly triangular, roughly sculptured with elongate punctures scabrous and wrinkled in apical third. Metasternum densely pubescent, punctured, midline complete. Abdomen with sterna 2–5 connate medially, very fine, setigerous punctures present, becoming sparse medially, denser laterally. Protibia tridentate in apical half, anterior spur long, slender, parallel sided, pointed or blunt, slightly shorter than or as long as protarsomere 1. Meso- and metatibiae each with a row of sharp serrations on outer margin next to body, inner spur shorter than or about as long as outer, both pointed. Tarsal claws with a small, sharp tooth near base, directed toward base of claw. Parameres each with a basal backwardly-directed tooth, apex dilated with ventral and dorsal apices rounded and feebly emarginate.

Differential diagnosis. No contemporary comparison of the Oriental and far eastern Palaearctic genera of the Rhizotrogini exists. As discussed above, the shape of the parameres distinguishes Cheberdord Allsopp , new genus from other genera.

Etymology. The name is derived from the Palauan word for beetle (https://www.tekinged.com/?lookup=beetle&direction=ep) and is to be treated as feminine.

Key to species

1 Anterior margin of clypeus evenly rounded with no trace of median emargination; parameres as in Figs 16, 19–21 View FIGURES 16–21 ............................................................. Cheberdord burmeisteri ( Brenske, 1892) , new combination

- Anterior margin of clypeus distinctly emarginate medially.................................................... 2

2 Antennomere 7 flattened and leaf-like; epipleuron with a single row of intermixed long and short setae forming a fringe visible in dorsal view, long setae about 1.0 mm long basally, decreasing in length toward apex; parameres as in Fig. 17 View FIGURES 16–21 ................................................................... Cheberdord dybasi (Gordon, 1979) , new combination

- Antennomere 7 feebly flattened; epipleuron with a single row of short setae visible in dorsal view, setae less than 0.5 mm long basally, decreasing slightly in length toward apex; parameres as in Fig. 18 View FIGURES 16–21 ................................................................................................. Cheberdord furtiva (Gordon, 1979) , new combination