Notoxus inbasalis Pic, 1926

Kejval, Zbyněk, 2011, Taxonomic revision of the Oriental species of Notoxus (Coleoptera: Anthicidae), Acta Entomologica Musei Nationalis Pragae 51 (2), pp. 627-673 : 648-649

Notoxus inbasalis Pic, 1926

( Figs. 20, 21 , 86 )

Notoxus inbasalis Pic, 1926: 14 .

Type locality. Northern Vietnam, Hoa Binh [province and city, southwest of Hanoi].

Type material examined. SYNTYPES: 1 J, ‘ Hoa Binh Tonkin de Cooman [p, handwritten 64 on bottom side] // n sp [h] // inbasalis nsp [h] 13 [p]’ ( MNHN) ; 1 J, the same locality label (including handwritten data), in addition: ‘64 [h] // [plain label]’ ( MNHN) .

Additional material examined. LAOS: 2♀♀, Luang Prabang Prov., 5 km W of Ban Song Cha, 20°33–4′N 102°14′E, 24.–30.iv.1999, V. Kubáň leg. ( NHMB). THAILAND: MAE HONG SON PROVINCE: 1J, Soppong, 19°29′N 98°18′E, 13.v.1993, L. Bocák leg. ( ZSMC).

Redescription. Male (syntype). Body length 4.2 mm. Head and pronotum largely brown black, pronotal horn and posterior collar with reddish tinge; elytra dark reddish, with black markings as in Fig. 86 : wider transverse spots / bands at mid-length and subapically, vaguely connected along suture. Legs and antennae reddish.

Body only moderately glossy; pronotal disc rather coarsely and very densely, evenly punctured, dorso-lateral punctures nearly contiguous; punctures in basal half of elytra conspicuous, distinctly larger / coarser than those on pronotum, simple, dot-like, with smooth margins, rather densely spaced. Body setation conspicuous, mostly subdecumbent; pronotum with numerous conspicuously long, erect setae, especially antero-laterally; elytra with numerous, moderately longer suberect to erect setae; tibiae with long, raised setae on outer side. Antebasal setose band of pronotum conspicuous, widely interrupted medially.

Head wide, with medium-sized eyes. Antennae only moderately enlarged in terminal third. Pronotum 1.1 times as wide as head across eyes, globose in dorsal view. Pronotal horn rather short, slender, slightly narrowing towards apex, with 3–4 lateral lobules on each side and wider, distinctly bilobed apical lobule; horn crest only moderately raised, evenly lowering towards horn apex, its lateral margins marked by series of coarser separate lobules; dorsal surface rather evenly and densely covered by distinct rounded rugules. Elytra 1.8 times as long as wide; humeri distinctly protruding; omoplates and postbasal impression moderately indicated; elytral apices distinctly modified, subtruncate, with rounded gland opening and notch on / near distinctly produced, lateral angle. Legs simple.Abdominal sternum VII simple, its posterior margin evenly rounded. Tergum VIII forming simple, evenly arched sclerite. Aedeagus as figured ( Fig. 20 ).

Female. Externally differing from male by simply rounded elytral apices.

Variation. Body length (J ♀) 3.8–4.2 mm. Base of elytra sometimes moderately darkened. The specimen from Thailand differs in the pronotal horn characters as follows: lobules of horn margins smaller, 3–5 on each side, subapical and apical lobules nearly fused; lobules of horn crest margins distinctly coarser, resembling rather longitudinal rugules.

Differential diagnosis. Notoxus inbasalis is characterized by a robust body, and by the very densely and coarsely punctured elytra (basal half) and pronotum (punctures nearly contiguous, especially dorso-laterally). It shares these characters with N. inbasaliformis sp. nov., but differs in the detailed morphology of the aedeagus (cf. Figs. 20, 21 versus 19).

Distribution. Vietnam ( PIC 1926), Laos, Thailand.

Remarks. PIC (1926) described Notoxus inbasalis from an unstated number of specimens collected in northern Vietnam (‘Tonkin’). The apex of the median lobe of the dissected syntype is retracted and thus strongly deformed (cf. Figs. 20 versus 21).

Figures

Figs.19–21.Aedeagus: 19 – Notoxus inbasaliformis sp. nov.; 20–21 – N. inbasalis Pic, 1926:20 – syntype; 21 – specimen from Soppong. Scale (0.5 mm): A – Fig. 19; B – Fig. 20, 21.

Figs. 84–91. Body in dorsal view: 84 – N. andrewesi Krekich-Strassoldo, 1913 (Kotagiri); 85 – N. katthapa sp. nov.; 86 – N. inbasalis Pic, 1926 (Soppong); 87 – N. safraneki sp. nov.; 88 – N. suturalifer Pic, 1932; 89 – N. sinensis Pic, 1907 (Xishan); 90 – N. brinckianus Bonadona, 1986 (Pottuvil); 91 – N. brunneorufus Bonadona, 1989 (Pachmarhi).