Dolichostyrax longipes Aurivillius, 1913

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 : 51-53

Taxon classification Animalia Coleoptera Cerambycidae

Dolichostyrax longipes Aurivillius, 1913 Figs 13-26

Dolichostyrax longipes Aurivillius, 1913: 239.

Type material.

Holotype, male, "Batu Lawi / Expedition / Between ulu / Madihil and Lim- / bang, 5-1911 / Gazette Aug. / 1911 // NHRS-JLKB // 000022861 // 5816 /E94 + // HOLOTYPE / Dolichostyrax / longipes Aurivillius, 1913 / Labelled by Gabriš, 2016" (NHRS).

Other material examined.

Male, "Malaysia, Sabah / Crocker Range / I-12-2004 / Jackson coll // Dolichostyrax / n. sp. 1 / det. J. Sudre 06 // Dolichostyrax / longipes Aurivillius, 1913 / Gabriš det., 2016" (PCDH); male, "BORNEO, Sabah, Malaysia / Kinabalu Park, HQ / 31.1.-2.2.2000, 1500 m / lgt. Jan Cempírek // Dolichostyrax / longipes Aurivillius, 1913 / Gabriš det., 2016" (PCJC); female, "Malaysia, Sabah / Sipitang vic / II-26-2005 / local coll // Dolichostyrax / longipes Aurivillius, 1913 / Gabriš det., 2016" (PCDH); female, "Malaysia, Sabah / Ranau / II-12-2004 / Lubin coll // Dolichostyrax / n. sp. 1 / det. J. Sudre 06 // Dolichostyrax / longipes Aurivillius, 1913 / Gabriš det., 2016" (PCDH); female, "Malaysia, Sabah / Tenom / IV-1-2004 / local coll // Dolichostyrax / n. sp. / det. J. Sudre // Dolichostyrax / longipes Aurivillius, 1913 / Gabriš det., 2016" (PCDH).

Diagnosis.

Dolichostyrax longipes differs by Dolichostyrax moultoni by presence of a distinct bulge at apex of scape (Figs 16, 24), tegmen basally with short strut (missing in Dolichostyrax moultoni ; Fig. 19), and parameres with with dense long setae at whole apical half (vs. setae distributed sparsely at apex of paramere only; Figs 19-20).

Redescription of holotype

(male). BL 9.4 mm, BW 3.5 mm. Body black, antennae and legs slightly lighter. Body densely clothed with very short golden brown pubescence, incorporating fine detritus particles. Head about as wide as anterior margin of pronotum. Antennae 1.3 times longer than body length; scape gradually only slightly widened towards apex, apical part distinctly thicker than the rest of scape, forming a distinct bulge (Fig. 16), densely covered with very short light brown pubescence; the relative ratio of antennomere lengths 2.5: 0.3: 1.0: 1.0: 0.8: 0.7: 0.6: 0.6: 0.6: 0.6: 0.8.

Prothorax as long as wide, laterally with one indistinct tubercle; pronotal disc with a pair of indistinct tubercles near middle and one median at second half; pronotal tubercles punctured. Prosternum in front of coxae 0.6 times shorter than diameter of coxal cavity. Scutellum transverse, more than three times as wide as long. Elytra elongate, 1.4 times as long as wide at widest part, 1.6 times as long as pronotum, widest at middle; each elytron with three rows of tubercles irregular in shape and size (Figs 13, 14), tubercles only slightly elevated from deeply wrinkled elytral surface; sparsely covered with large deep punctures arranged in rows, visible mainly from the lateral view. Legs long, slender; with all tibial spurs distinct; right protarsus and metatarsus with only tarsomere I preserved, right mesotarsus missing; relative lengths of metatarsomeres 1.0: 0.8: 1.2: 1.8.

Male genitalia with tegmen elongate, widest before middle, basally with short strut; parameres elongate, less than half of phallobase length, with dense long setae at apical half (Fig. 19). Penis weakly curved at lateral view, apically truncate; dorsal struts diverged from about 1/2 of penis length. Internal sac long, with paired small medial and distinct flagellar sclerites (Figs 17-18).

Variability in males.

BL 9.4-11.8 mm, BW 3.5-4.3 mm. Antennae 1.0-1.3 times longer than body length. Prothorax laterally with one more or less distinct obtuse tooth; pronotal disc slightly to deeply wrinkled; pronotal and elytral tubercles more distinct in other males than holotype. Male from Kinabalu Park (PCJC) large, with pubescence very dense, yellowish brown, and with slightly narrower tegmen.

Description of female.

Most characters same as for males. BL 11.7-12.5 mm, BW 4.3-4.9 mm. Antennae 0.9-1.0 times longer than body length. Pronotal and elytral tubercles more or less distinct; tubercles smooth or with individual punctures. Elytra elongate, 1.4-1.6 times as long as wide at widest part, 1.8-2.3 times as long as pronotum. Female genitalia with elongate ovipositor (Fig. 25). Bursa copulatrix small. Spermatheca slender, elongate, curved; sclerotized part of spermathecal duct simply coiled, distinctly shorter than spermatheca itself (Fig. 26).

Distribution.

Malaysia: Borneo (Sabah).