Anexodus tufi, Gabris, Radim, Trnka, Filip, Wahab, Rodzay Abdul & Kundrata, Robin, 2017

Gabris, Radim, Trnka, Filip, Wahab, Rodzay Abdul & Kundrata, Robin, 2017, Taxonomic revision of the endemic Bornean genera Anexodus Pascoe and Pantilema Aurivillius (Coleoptera, Cerambycidae, Lamiinae), ZooKeys 669, pp. 29-51 : 31-33

Anexodus tufi sp. n. Figs 7-8, 15-16, 20, 26-27, 31, 33, 40

Type material.

Holotype, male, "BRUNEI, Ulu Temburong NP / Kuala Belalong FSC / 4°32'47.6"N 115°09'27"E / I. H. Tuf leg. II.2013" (UBDC); paratype, female, same data as holotype (UPOL); 2 paratypes, females, "BRUNEI, Ulu Temburong NP / Kuala Belalong FSC / 4°32'47.6"N 115°09'27"E / Z. Mačát leg. I.2014" (BMNH); paratype, female, "BRUNEI, Ulu Temburong NP / Kuala Belalong FSC / 4°32'47.6"N 115°09'27"E / O. Machač leg. II.2015" (UPOL).

Differential dagnosis.

This species is similar to A. aquilus in having yellowish stripes on the dorsal body surface and labrum with the whole surface punctured (Fig. 20), but it differs in shape of the scape (apex simple in A. tufi sp. n., apex with distinct lateral hook-shaped projection in A. aquilus ; Figs 21-22, 26-27), length of the parameres (relatively longer in A. aquilus ; Figs 28, 31), and shape of the spermatheca (simply elongated in A. tufi sp. n., widened at second half in A. aquilus ; Figs 32-33).

Description.

Holotype (male). BL 7.4 mm, BW 2.3 mm. Body brown with yellowish stripes ranging from vertex through sides of pronotum to basal part of elytra, densely clothed with very short brown pubescence. Head about as wide as anterior margin of pronotum. Labrum transverse, its surface with moderately sparse punctures (Fig. 20). Eyes moderately emarginate at antennal articulations (Figs 15-16). Antennae 0.9 times as long as body; scape gradually slightly widened towards apex, thickest at apical part, apex simple (Figs 26-27); the relative ratio of antennomere lengths 3.2: 1.5: 1.0: 1.2: 1.0: 0.9: 0.5: 0.5: 0.5: 0.5: 1.0.

Prothorax as long as wide, laterally with one distinct tubercle; pronotal disc with a pair of moderately distinct tubercles near middle and one median at second half and one indistinct median at anterior half; pronotal tubercles punctate. Prosternum in front of coxae 0.9 times shorter than diameter of coxal cavity. Scutellum transverse, two times as wide as long. Elytra elongate, 1.8 times as long as wide at widest part, 1.9 times as long as pronotum, widest near middle; each elytron with three rows of distinct, longitudinally elongate tubercles (Figs 7-8, 15-16), inner row forming a distinct ridge basally; sparsely covered with large deep punctures arranged in slightly irregular rows. Legs long, slender; relative lengths of metatarsomeres 1.0: 0.6: 1.0: 2.1.

Male genitalia with tegmen elongate, widest before middle, basally with short strut; parameres elongate, 3.3 times longer than wide, apically with long setae (Fig. 31). Pe nis subparallel-sided, apically truncate; dorsal struts diverged from about 1/3 of penis length. Internal sac long, with paired small medial sclerites and distinct flagellar sclerites.

Intraspecific variability.

The male paratype is larger (body length 9.4 mm, body width 2.8 mm).

Female. Most characters same as for males. BL 8.5-10.2 mm, BW 2.7-3.4. Antennae shorter, 0.7 times as long as body, with relatively longer scape and pedicel (length ratio of antennomeres I–III: 3.4-3.6: 1.7-1.8: 1.0). Elytra 2.2-2.3 times as long pronotum. Fifth ventrite with apex truncate. Spermatheca sclerotized, slender, elongate, curved, gradually tapered toward apex; sclerotized part of spermathecal duct simple (Fig. 33).

Distribution.

Brunei (Fig. 43). All the specimens in the type series are from the vicinity of the Kuala Belalong Field Studies Centre (KBFSC) in the Ulu Temburong National Park (Fig. 41) which has been described in detail by Ševčík et al. (2014).

Etymology.

This species is named after Mr. I. H. Tuf (UPOL, Czech Republic; Fig. 42), who collected a part of the type series.