Orsunius gladiator, Assing, 2014
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publication ID |
https://doi.org/ 10.5281/zenodo.5305057 |
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DOI |
https://doi.org/10.5281/zenodo.6539881 |
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persistent identifier |
https://treatment.plazi.org/id/184887E9-FFF9-BD53-1F9C-A82091A60759 |
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treatment provided by |
Marcus |
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scientific name |
Orsunius gladiator |
| status |
sp. nov. |
Orsunius gladiator View in CoL nov.sp.
( Figs 9 View Figs 1-9 , 14-17 View Figs 10-17 , Map 2 View Map 2 )
Type material Holotype: " Thailand, 23.-25.ii.1996, Ranong prov. 9°56' 98°40', Ranong: Hot Springs , K. Majer leg. / Holotypus Orsunius gladiator sp.n. det. V. Assing 2013" ( NHMB) . Paratype: "N-Thailand, Chiang Mai, Sandoeng [=Samoeng?], Flussufer, 350-550 m, Sand, Steine, 12.XI.1995, P. Wunderle" (cAss).
Etymology: The specific epithet (Latin, noun in apposition) alludes to the swordshaped ventral process of the aedeagus.
Description: Body length 4.0- 4.9 mm; length of forebody 2.2-2.4 mm. Habitus as in Fig. 14 View Figs 10-17 . Coloration: head dark-reddish; pronotum bright-reddish; elytra reddishbrown with the posterior two-fifths and the humeral angles reddish-yellow; abdomen brown, with the posterior portion of segment VII and all of segment VIII dark-yellowish; legs yellowish; antennae reddish.
Head ( Fig. 15 View Figs 10-17 ) strongly transverse, approximately 1.25 times as broad as long, broadest across eyes, weakly tapering behind eyes, and with sharply marked posterior angles; posterior margin very weakly concave in the middle; punctation moderately dense and very coarse, median dorsal portion with a subcircular impunctate patch; interstices without microsculpture; lateral margins with long black setae (broken off in holotype). Eyes large and strongly bulging, somewhat longer than postocular portion in dorsal view. Antennae 1.2 mm long and slender; preapical antennomeres approximately as broad as long. Anterior margin of labrum with V-shaped excision in the middle.
Pronotum ( Fig. 15 View Figs 10-17 ) 1.15 times as wide as long and slightly broader than head; posterior angles rounded, weakly marked; lateral margins with long black setae (broken off in holotype); punctation moderately dense and coarse, but slightly less so than that of head; midline with narrow impunctate band; interstices without microsculpture.
Elytra ( Fig. 15 View Figs 10-17 ) approximately as long as pronotum; punctation dense and fine; interstices without microsculpture. Hind wings fully developed. Protarsomeres I-IV distinctly dilated. Metatarsomere I moderately slender, longer than II, but shorter than the combined length of II and III.
Abdomen slightly narrower than elytra; punctation dense and extremely fine; interstices with distinct microreticulation; posterior margin of tergite VII with palisade fringe.
: sternite VII with weakly concave posterior margin; sternite VIII ( Fig. 9 View Figs 1-9 ) approximately 1.05 times as long as broad and with barely noticeable, extremely shallow and broad posterior excision; aedeagus ( Figs 16-17 View Figs 10-17 ) 0.73 mm long, ventral process conspicuously long and slender, sword-shaped in lateral view.
Comparative notes: In size, coloration, and habitus, O. gladiator somewhat resembles O. immsi , from which it is distinguished by the distinctly coarser punctation of the more transverse head, as well as by the completely different male sexual characters.
Distribution and natural history: The species is known from two localities in northern and southern Thailand ( Map 2 View Map 2 ). The slightly teneral paratype was collected on a river bank with sand and stones at an altitude of 350- 550 m. The holotype was collected together with O. latexcisus , O. immsi , O. flavovirgatus , and an undescribed species.
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