Orictites barclayi minorfrater, Balkenohl, 2017

Balkenohl, Michael, 2017, Revision of the genus Orictites ANDREWES, 1931 (Coleoptera, Carabidae, Clivinini), Contributions to Natural History 35, pp. 1-68 : 49-50

Orictites barclayi minorfrater ssp. nov.

Type material: Holotype: ♂, labels: white, black printed: “W SUMATRA prov.: Kerinci Seblat N.P.: 24km NE Tapan: MUARA SAKO  E env.: 2°05´S 101°15´E: 400–550m: Dembický leg.: 4.–18.iii.2003 ” / “Collection Naturhistorisches Museum Basel” ( NHMB).

Description ( Figs 11 , 28 ; pp. 10, 25)

Measurements: Body length 4.25 mm, width 1.09 mm; ratio length/width of pronotum 1.04; ratio length/width of elytra 1.93.

The subspecies differs from the nominotypical subspecies in the following characters:

Colour: Intervals of elytra with reddish-brown stripes at middle.

Head: Frontal carinae convex, with medium sized puncture on the frons. Labrum anteriorly slightly advanced. Punctures of neck constriction bigger than in the nominotypical subspecies. Antennae with segments 5–10 slightly transverse (L/ W 0.76).

Pronotum: Median line not quite reaching level of anterior transverse line, indistinctly joining base. Surface with irregularly scattered punctures of medium size.

Elytra: Intervals 3 and 4 at base with tubercle. Interval 3 with six setigerous punctures.

Legs: Anterior tibia shiny.

Male genitalia ( Fig. 28 ): Moderately long, slightly sclerotized. Median lobe slender, moderately and regularly arcuate, spatula stick-like at apex. Endophallus with some minute teeth. Parameres of about same length, both slender, dorsal one distinctly twisted, both of them with two setae apically (in the dorsal one, best visible at 400x).

Female genitalia: Unknown.

Diagnosis: Smaller body than the nominotypical subspecies and distinguished by the six setigerous punctures on the 3 rd interval of the elytra and tubercles at base of intervals 3 and 4, and the puncture in the middle of the frons.

Distribution: Known from the Kerinci Seblat Natonal Park in West Sumatra.

Remark: Whether this subspecies deserves species status should be revaluated when male and female genitalia of both subspecies are at hand and more material is available.

Etymology. By contrast to the nominotypical subspecies, the specimen has a smaller body size and is a male serving for the derivation of the name, which means “little brother”.

Figures

Figs 9–12: Orictites spp., habitus. 9: O. barclayi sp. nov., holotype, female; 10: O. brancuccii sp. nov., holotype, male; 11: O. barclayi minorfrater ssp. nov., holotype, male; 12: O. tubercucollis sp. nov., holotype, male.

Figs 27–30: Orictites spp., aedeagus, ventral view. 27: O. brancuccii sp. nov., holotype, scale bar 0.2 mm; 28: O. barclayi minorfrater ssp. nov., holotype, scale bar 0.2 mm; 29: O. tubercucollis sp. nov., holotype, scale bar 0.2 mm; 30: O. anteriorlatus sp. nov., holotype, scale bar 0.2 mm.