Zherichinixena vossi Legalov, 2023

Legalov, Andrei A., 2023, A new species of the genus Zherichinixena Legalov, 2009 (Coleoptera, Belidae) from South Sumatra, Ecologica Montenegrina 68, pp. 6-11 : 7-9

Zherichinixena vossi Legalov , sp. nov. ( Fig 1 )

https://zoobank.org/ urn:lsid:zoobank.org:act:C0202D01-AC98-4EAF-A12A-51F3985C0B71

Type material: Holotype, male ( SMTD), INDONESIA: “ Sumatra, Manna”, “ M. Knappert ”, “ Samml. K.F. Hartmann, Ankauf 1941.1”, “Staatl. Mus. für Tierkunde Dresden” . Paratype, female ( SMTD), idem .

Description. Male: Body brownish, with fine pubescence. Rostrum weakly curved, slightly longer than pronotum, 5.9 times as long as wide at apex, 7.6 times as long as wide in middle, 4.5 times as long as wide at base, with two longitudinal carinae, without adpressed setae ventrally. Antennae inserted near rostrum basis ventrally. First-seventh antennomeres subconical. First antennomere 2.3 times as long as wide at apex, reaching eye. Second antennomere 1.3 times as long as wide at apex, about 0.5 times as long as and about 0.9 times as narrow as first antennomere. Third antennomere about 2.2 times as long as wide at apex, about 1.3 times as long as and about 0.8 times as narrow as second antennomere. Fourth–fifth antennomeres subequal in length. Fourth antennomere 2.0 times as long as wide at apex, 1.1 times as wide as third antennomere. Fifth antennomere subequal to fourth antennomere. Sixth antennomere about 1.7 times as long as wide at apex, slightly narrower and 1.1 times as wide as fifth antennomere. Seventh antennomere equal to sixth antennomere. Forehead weakly convex, about 0.8 times as narrow as rostrum base width, with median longitudinal furrow, densely rugose-punctate. Eyes large, convex, finely faceted. Head behind eyes with constriction. Temples about 0.7 times as long as eye. Pronotum campaniform, 1.7 times as long as wide at apex, 1.1 times as long as wide in middle and at base, weakly convex, with fife longitudinal carinae, with very weak teeth on sides, finely rugose-punctate. Distance between points longer than their diameter. Pronotum sides distinctly narrowed to apex. Scutellum semi-oval, of equal length and width. Elytra suboval, about 2.3 times as long as humeri, 2.0 times as long as wide in middle, about 2.5 times as wide at apical fourth, about 2.5 times as long as pronotum, with smoothed humeri. Elytral disc with two distinct long carinae and weak striae. Apex of elytra with tooth. Precoxal portion of prosternum long, 2.4 times as long as procoxal cavity. Postcoxal portion of prosternum short, slightly shorter than procoxal cavity, about 0.4 times as long as precoxal portion. Procoxal cavities separated. Metaventrite weakly convex, punctate, about 2.3 times as long as metacoxal cavity. Metepisternum narrow. Abdomen convex, densely punctate. Ventrites free. First ventrite about 1.8 times as long as metacoxal cavity. Second ventrite about 0.9 times as long as first ventrite. Third ventrite slightly shorter than second ventrite. Fourth ventrite about 0.8 times as long as third ventrite. Fifth ventrite slightly longer than fourth ventrite. Legs quite long. Procoxae large, spherical. Femora weakly thickened, lacking teeth, densely punctate. Tibiae short and wide. Tarsi wide. First tarsomere conical. Second and third tarsomeres bilobed, with erect setae ventrally. Fifth tarsomere elongate. Tarsal claws free, divergent. Total body length (without rostrum) 6.8 mm. Length of rostrum 1.8 mm. Female: Rostrum weakly curved, about 1.6 times as long as pronotum, 8.0 times as long as wide at apex, 12.0 times as long as wide in middle, 6.0 times as long as wide at base, lacking carinae. First-ninth antennomeres subconical. First antennomere about 2.5 times as long as wide at apex. Second antennomere 1.7 times as long as wide at apex, about 0.7 times as long as and slightly narrower than first antennomere. Third antennomere about 2.2 times as long as wide at apex, subequal in length and 0.8 times as narrow as second antennomere.

Fourth–fifth antennomeres subequal in width. Fourth antennomere about 1.8 times as long as wide at apex, about 0.9 times as long as third antennomere. Fifth antennomere about 1.7 times as long as wide at apex and about 0.9 times as long as fourth antennomere. Sixth-eighth antennomeres subequal in length. Sixth antennomere 1.4 times as long as wide at apex, about 0.9 times as long as and 1.1 times as wide as fifth antennomere. Seventh antennomere about 1.3 times as long as wide at apex, 1.1 times as wide as sixth antennomere. Eighth antennomere subequal to seventh antennomere. Ninth antennomere about 1.5 times as long as wide at apex, about 1.4 times as long as and about 1.2 times as wide as eighth antennomere. Antennal club apically tomentose. Tenth antennomere 2.1 times as long as wide at apex, 1.5 times as long as and about 1.1 times as wide as ninth antennomere. Eleventh antennomere about 0.8 times as long as wide at base, 0.4 times as long as and about 1.1 times as wide as tenth antennomere. Forehead about 0.9 times as narrow as rostrum base width. Temples about 0.7 times as long as eye. Pronotum about 1.4 times as long as wide at apex, about 0.9 times as long as wide in middle and at base. Scutellum about 1.1 times as long as wide in middle. Elytra 2.4 times as long as humeri, 2.0 times as long as wide in middle, 2.5 times as wide at apical fourth, about 3.2 times as long as pronotum. Precoxal portion of prosternum 1.8 times as long as procoxal cavity. Postcoxal portion of prosternum about 0.5 times as long as precoxal portion. Metaventrite about 1.9 times as long as metacoxal cavity. First ventrite about 1.7 times as long as metacoxal cavity. Second ventrite 0.7 times as long as first ventrite. Third ventrite about 0.8 times as long as second ventrite. Fourth ventrite slightly shorter than ventrite. Fifth ventrite about 1.1 times as long as fourth ventrite. Total body length (without rostrum) 6.5 mm. Length of rostrum 2.0 mm.

Etymology. Patronymic. In honour of late Eduard Voss ( Germany), who studied weevils of the tribe Metrioxenini .

Comparison. The new species differs from Zherichinixena nigra Legalov, 2009 in the smaller body sizes, the sides of the pronotum strongly tapering towards to the apex, and an aedeagus widened apically.

Localisation. INDONESIA: Sumatra Isl. (South Bengkulu Regency, Bengkulu Province).

A list of the Recent Metrioxenini

Figures

Figure 1. Zherichinixena vossi sp. nov., Sumatra: a – holotype, male, habitus, dorsal view; b – holotype, male, habitus, ventral view; c – paratype, female, habitus, dorsal view; d – paratype, female, habitus, ventral view; e – holotype, male, habitus, lateral view; f – paratype, female, habitus, lateral view; g – holotype, male, abdomen, dorsal view; e – holotype, male, aedeagus, dorsal view; i – holotype, male, aedeagus, lateral view; j – holotype, male, tegmen, dorsal view; k – holotype, male, eighth tergite, dorsal view. Scale bar = 2.0 mm for a–f, 1.0 mm for g, 0.5 mm for h–k.