Anchocerus balianus, Janák, Jiří, 2017

Janák, Jiří, 2017, Four new species and a new record of Anchocerus from the Oriental region (Coleoptera: Staphylinidae: Staphylininae: Staphylinini: Acylophorina), Zootaxa 4319 (3), pp. 579-589 : 580-584

Anchocerus balianus sp. nov.

( Figs. 12–19 )

Type locality. Indonesia, Bali, Lake Buayan , ca. 8° 15' S, 115° 08' E.

Type material. Holotype ♂: INDONESIA, BALI: “ BALI, L. Buayan, 27.VII.1981, de Rougemont” ( GROC). Description. Body length 9.1 mm, forebody length 4.1 mm ( Fig. 12 ). Body black, mouthparts, legs and antennae brown, antennal segments 1–3 and 11 reddish yellow.

Head ( Fig. 13 ) almost as long as wide (R=0.94), straight behind eyes. Temples longer than eyes (R=1.28). Dorsal macrosetae (one side only): one near antennal base; one medially between eyes; one between posterior margin of eye and neck constriction, markedly closer to neck constriction than to posterior margin of eye; one medially near neck constriction; two laterally on temples of which one near posterior margin of eye and one near neck constriction ( Fig. 13 ). Surface with sparse and fine nonsetiferous punctation. Antennae long, fifth segment markedly longer than wide (R=1.58), tenth segment markedly transverse (R=0.67). Mandibles with wide tooth ( Fig. 13 ).

Pronotum ( Fig. 13 ) almost as long as wide (R=0.95), longer (R=1.40) and wider (R=1.39) than head, with punctation markedly finer and sparser than that on head. Dorsal macrosetae (one side only): one medial on disc and three laterally in anterior third. Elytra with dense and coarse punctation, shorter than wide (R=0.92), longer (R=1.10) and wider (R=1.14) than pronotum. Wings well developed. Scutellum with punctation and setae similar to those on elytra. Abdomen with coarse and moderately dense punctation, all tergites with dense transverse microsculpture. Legs densely covered with brown setae, all tibiae with lateral spines.

Male. Sternite 9 ( Fig. 14 ) long, moderately narrowed apically, with numerous long setae at apicolateral portion; tergite 10 ( Fig. 15 ) narrowed apically, with several long setae situated at apical and lateral margins.

Aedeagus 1.25 mm long ( Figs. 16–19 ); median lobe moderately slender, narrow apically; paramere moderately wide, distinctly shorter than median lobe; sensory peg setae absent.

Female. Unknown.

Differential diagnosis. Anchocerus balianus sp. nov. can be inserted in a key ( Solodovnikov 2008) near A. aparamerus and differs from this species by longer and finely punctured pronotum and by the different shape of the aedeagus with very wide paramere.

Etymology. The specific epithet refers to the type locality.

Distribution. The species is known only from Buayan Lake on Bali island.

Bionomics. Nothing is known about the bionomics of the new species.

Figures

FIGURES 12 – 19. Anchocerus balianus sp. nov., holotype. 12, habitus; 13, head and pronotum; 14, male sternite 9; 15, male tergites 9, 10; 16, aedeagus ventral; 17, aedeagus lateral; 18, paramere ventral; 19, paramere lateral.