Microdolichostyrax minutus, Gabris, Radim, Kundrata, Robin & Trnka, Filip, 2016

Gabris, Radim, Kundrata, Robin & Trnka, Filip, 2016, Review of Dolichostyrax Aurivillius (Cerambycidae, Lamiinae) in Borneo, with descriptions of three new genera and the first case of (ovo) viviparity in the long-horned beetles, ZooKeys 587, pp. 49-75 : 55-57

Taxon classification Animalia Coleoptera Cerambycidae

Microdolichostyrax minutus sp. n. Figs 34-39

Type material.

Holotype, female, "Malaysia, Sabah / Kuamut / III-13-2014 / local coll // HOLOTYPE / Microdolichostyrax / minutus Gabriš, Kundrata / & Trnka, 2016 / sp. n. " (HNHM, ex PCDH).

Diagnosis.

Microdolichostyrax minutus sp. n.can be recognized by the smaller body (BL 9.0 mm), body pubescence paler, yellowish brown (vs. chestnut brown in Microdolichostyrax hefferni sp. n.; Figs 27, 34), antennomere II 0.5 times as long as antennomere III, spermatheca with apical part tapered (vs. rounded), and the sclerotized part of spermathecal duct short, curved (vs. very long; Figs 33, 39).

Description of holotype

(female). BL 9.0 mm, BW 2.9 mm. Body brown; antennae, legs and palpi lighter. Body densely clothed with very short yellowish brown pubescence, incorporating fine detritus particles (Fig. 34).

Head slightly wider than anterior pronotal margin. Antennae 0.7 times as long as body; scape enlarged, reaching about half of pronotum, gradually widened towards apex, thickest at apical part, surface slightly distorted, not smooth, covered with very short dense pubescence; relative ratio of antennomere lengths: 3.2: 0.5: 1.0: 1.1: 1.0: 0.7: 0.8: 0.7: 0.7: 0.7: 1.5 (Fig. 37).

Prothorax 0.9 times as long as wide, widest at middle, laterally with one small obtuse tubercle; pronotal disc with pair of tubercles near middle and one median at second half; pronotal tubercles punctured. Prosternum in front of coxae 0.9 times shorter than diameter of coxal cavity. Scutellum transverse, about three times as wide as long. Elytra elongate, 1.8 times as long as wide at widest part, 2.3 times as long as pronotum, widest near middle; each elytron with three rows of irregular, slightly elevated tubercles (Figs 34-35), sparsely covered by large deep punctures irregularly in rows; surface not wrinkled. Legs long, slender; relative lengths of metatarsomeres 1.0: 0.6: 1:0: 1.7.

Female genitalia with ovipositor elongate, narrow, apically with short styli (Fig. 38). Vagina narrow, with pair of vaginal plates. Bursa copulatrix small. Spermatheca present, well-sclerotized, elongate, curved, basally wider, constricted at apical 1/3, apex tapered; sclerotized part of spermathecal duct short, curved (Fig. 39).

Distribution.

Malaysia: Borneo (Sabah: Kuamut).

Etymology.

The name “minutus” refers to the smaller size of the species.