Orictites anteriortenuis, Balkenohl, 2017

Balkenohl, Michael, 2017, Revision of the genus Orictites ANDREWES, 1931 (Coleoptera, Carabidae, Clivinini), Contributions to Natural History 35, pp. 1-68 : 37-40

publication ID	https://doi.org/ 10.5169/seals-787048
DOI	https://doi.org/10.5281/zenodo.6315579
persistent identifier	https://treatment.plazi.org/id/2559A84D-A877-FFD3-D6FF-FCDC8EA8FCB4
treatment provided by	Carolina
scientific name	Orictites anteriortenuis
status	sp. nov.

Treatment

Orictites anteriortenuis View in CoL sp. nov.

Type material: Holotype: ♂ Labels: white, black printed, black framed: “ 23.7.1996 29 Schüle/ Stüben West Papua 700m Strasse von Nabire nach Mapia km 54 Sek.wald / Busch” ( CBM-ZSM).

Remarks: In the holotype the digitation of the left front tibia is missing its apical tip.

Paratypes: 1 ♂, labels: white, black printed: “ Iran Jaya , Nabire-Ilaga , km 54 , 750m X.1997 leg. M.Balke ” ( CBB) ; 1 ♀, “ Bandar Baroe / Sumatra: MjÖberg / costulipennis Bates (petit ex.) H.E. Andrewes det. / 4122 E91 + / costulipennis H.W.Bates ” ( NHRS) .

Description ( Figs 6 View Figs 5–8 , 24 View Figs 21–26 , 35 View Figs 35–38 ; pp. 9, 24, 36)

Measurements (n = 3): Body length 4.42–5.1 mm ( = 4.79 mm), width 1.21– 1.28 mm ( = 1.24 mm), ratio length/width of pronotum 1.01–1.05 ( = 1.03), ratio length/width of elytra 1.99–2.09 ( = 2.04).

Colour: Shiny. Black. Wings of clypeus and supraantennal plates brown and slightly transparent, antennae, labrum and mandibles brown, palpi yellowish brown, legs red-brown.

Head: A third narrower than pronotum. Clypeus with small rounded slightly projecting tooth laterally, distinctly separated from wings, anterior margin excised, convex between the two clypeal setae, margin of wings convex, slightly hollowed out, divided from middle part of clypeus by slight notches and carinae, divided from supraantennal plates by distinct obtusely angled notches and ridge, clypeus and wings reflexed margined, supraantennal plates vaulted over mid-eye level, widened laterally, smooth, with reflexed rounded margin, elongated as supraorbital carina. Frons separated from clypeus by indistinct transverse depression, sharp furrow between frons and frontal carina, frons moderately convex. Frons and clypeus with big punctures. Supraorbital setae located in broad furrows between supraorbital carina and frontal carina, the posterior one arising from tubercle. Eyes well developed, convex. Genae distinct, regularly rounded, not as high as eyes, enclosing eyes posteriorly by one fifth, forming obtuse angle at neck. Grooves for reception of antennae short, length 0.25 of eye diameter. Neck constriction marked as slightly impressed line, impunctate. Neck laterally covered with reticulation and densely scattered medium sized punctures. Labrum straight, 7-setose, ciliate laterally, with fine isodiametric reticulation. Mandibles robust, shorter than head, broadened at base, apical half elongated, acutely curved at apex, carinae of scrobe complete, angled, both mandibles obtusely angled towards base (opened position), both mandibles somewhat hollowed out dorsally. Maxilla distinctly curved, acutely hooked at apex. Apical maxillary palpomere slender, slightly securiform. Apical labial palpomere slender, straight, slightly longer than 2 nd segment, 2 nd segment bisetose. Ligula with one long seta; paraglossae slender. Ventral surface of neck with punctures and some transverse reticulation. Submentum and mentum distinctly separated; submentum with four bigger setigerous punctures; mentum at base bilaterally with rounded elevation, with a few longitudinal carinae, with fine and complete reflexed margin, lateral lobes projecting, nearly right-angled at tips, with a seta near base of each lobe, median tooth obtuse, triangle-like, bisetose, not projecting as far as lateral lobes. Antennae relatively long, reaching distinctly over two thirds of pronotum, scapus knee-like angled, with one seta dorsoapically, scapus and pedicellus with fine isodiametric reticulation, segments 5–10 transverse (L/ W 0.8), antennomeres slightly flattened, with shiny areas on flattened parts, segments 4–11 densely pubescent, with few additional long setae.

Pronotum: Square, longer than wide, outline reminiscent of the frustum of a pyramid, sides straight, convex in anterior quarter for a short distance to anterior angles. Anterior margin indistinctly bisinuate. Reflexed lateral margin without any scars. Margin from posterior angle to base running as slightly sigmoid line. Lateral channel distinctly broadened between the two lateral setigerous punctures, with isodiametric reticulation and very few indistinct punctures. Anterior setigerous puncture located at the end of anterior quarter adjoining disc of pronotum, the posterior one located at level of posterior angle, removed from lateral channel by twice the diameter of pore. Anterior angle slightly projecting, rounded, formed by reflexed lateral margin, posterior angle developed as tooth, projecting laterally not as far as widest part of pronotum. Anterior transverse line narrow, sharp. Median line deep, broad, rugose, running up to level of anterior transverse line but not joining, smaller at base, just adjoining base. Surface irregularly covered with punctures of different size, basal impression indistinct. Basal channel moderately broad, deep. Flange raised keel-like (lateral view).

Elytra: Subcylindrical, sides slightly diverging, marginal channel broad, visible from above, with uninterrupted row of big setigerous punctures arising from broad tubercles and second row of punctures. Reflexed margin with a few indistinct scars in anterior third, margin bending with channel over rounded humerus up to 5 th stria. Humerus without tooth. Basal tubercle distinct, with setigerous puncture, situated at declivity of first stria. Striae 1–4 free at base, all striae deep, indistinctly punctate, striae 1–2, 3–4, and 5–6 joined apically; striae 6 and 7 shortened at humerus. Striole distinct, interval between striole and sutura slightly raised. Intervals moderately convex, 3 rd and4 th slightly raised at base, both with tubercle at base, 8 th carinate. All intervals shiny on disc. Interval 3 with five setigerous punctures adjoining stria 3.

Hind wings: Fully developed.

Ventral surface: Epipleuron shiny, covered with indistinct reticulation, submarginal furrow distinct. Proepisternum and episternum nearly smooth, prosternite smooth, keeled at middle, mesosternum smooth. Sternites with transverse to isodiametric reticulation, each with punctures at base, slightly denser laterally, 3 rd to 5 th with paralateral ambulatory setae at each side, ventral strigae distinct, sternite 6 smooth at middle, with two widely separated apical setae at each side.

Legs: Anterior tibia with strong digitation, with two big and one small lateral preapical denticles, apical spine curved distinctly towards ventral, with flat dorsal furrow, basal tarsomere elongated, as long as the following four together. Mesotibia with preapical spine, furnished with strong seta. All tarsomeres relatively broad.

Male genitalia ( Fig. 24 View Figs 21–26 ): Moderately long and sclerotized. Median lobe slender, moderately arcuate, not twisted, nearly straight preapically, apex stick-like. Endophallus with group of teeth apically. Parameres of about same length, both slender, distorted preapically, asetose.

Female genitalia. ( Fig. 35 View Figs 35–38 ): Coxostylus stout, of moderate length, distinctly curved to apex, with a pair of setae arising closely together preapically, with three longer nematiform setae basally, with two bigger acute ensiform setae at middle and a smaller one towards base.

Variation: The basal impression of the pronotum varies in distinctness. Striae 1 and 2 indistinctly joined at apex at one side in a paratype.

Diagnosis: A medium-sized black species with the knob on the clypeus developed as elevation and indistinct transverse depression behind, no humeral tooth, and tubercles at the base of intervals 3 and 4 of the elytra. Distinguished from all other species by the presence of five setigerous punctures on interval 3 of the elytra, and the neck constriction, developed as slightly impressed impunctate line.

Distribution. Known from West of Papua collected at an altitude of 700 and 750 m.

Etymology: The name refers to the width of the pronotum decreasing anteriorly.