Cyphocoleus iledespinsensis, Liebherr, 2016

Liebherr, James K., 2016, Cyphocoleus Chaudoir (Coleoptera, Carabidae, Odacanthini): descriptive taxonomy, phylogenetic relationships, and the Cenozoic history of New Caledonia, Deutsche Entomologische Zeitschrift 63 (2), pp. 211-270 : 254-255

22. Cyphocoleus iledespinsensis sp. n. Figures 159-160 , 164 , 165

Diagnosis

(n = 1). This species can be characterized as a dark, fuscous version of Cyphocoleus subulatus , its adelphotax on (Fig. 46 ). Only the less convex eyes (Fig. 164 ) - ocular ratio1.49 - and the uniformly dark legs externally diagnose this species from its sister. The male genitalia can be referred to if a male is available for dissection. Standardized body length 7.1 mm. The two species are absolutely allopatric, with this species restricted to Île des Pins and Cyphocoleus subulatus distributed across the southern 2/3 of Grande Terre (Fig. 164 ).

Description.

(The description of Cyphocoleus subulatus can serve for this species, with the following exceptions to accompany the diagnostic characters presented above). Head capsule narrowly ovoid, neck distinctly constricted with genae moderately convergent behind eyes in dorsal view; 17 ommatidia across horizontal diameter of eye; frons with narrow, elevated median carina that is surrounded by ovoid, transversely wrinkled median flat spot; frontal grooves narrow, sinuous anteriorly from between eyes onto clypeus, separated from supraocular groove by narrow ridge, frontoclypeal suture obsolete laterally, broadly and shallowly evident medially; mandibles moderately elongate, length 2.1 × distance from antennal articulatory socket to anterolateral margin of labrum. Pronotum with front angles tightly rounded to angulate, slightly protruded, obtuse; median longitudinal impression narrowly and deeply incised; anterior transverse impression indicated laterally as oblique depressions extended toward front angles, absent medially where anterior wrinkle is extended anteriorly onto anterior callosity, very fine longitudinal irregularities traversing callosity. Elytral subapical sinuation distinctly concave, lateral portion of concavity joined to depressed lateral margin in tightly rounded curve; elytral apices rounded, narrowly separated by shallow invagination at fused suture, Abdomen with apical margin of apical ventrite shallowly concave medially in female, two setae each side of concavity. Microsculpture on elytral intervals much reduced, surface glossy, a transverse mesh or transverse lines present in depressed undulations of surface. Coloration of body dorsum and venter, including elytral epipleuron, uniformly piceous; legs rufopiceous.

Male genitalia (n = 1). Male aedeagal median lobe elongate, heavily sclerotized, parallel sided from base to ostial opening; dorsoventral breadth at midlength 0.13 × distance from tip to base of closed basal bulb (Figs 159 ); elongate lobe apex porrect in dextral view (Fig. 159 ), curved to the right in ventral view (Fig. 160 ), dorsoventral breadth at midlength of apical extension 0.14 × distance from distal margin of ostial opening to tip; ostial opening on left-ventral surface of median lobe shaft (Fig. 160 ).

Type.

Holotype male (MNHN): (dissected, remounted on platen) // I. / des / Pins // Cyphocoleus revision / measured specimen 1 / J.K. Liebherr 2015 // genitalia vial // HOLOTYPE / Cyphocoleus / iledespinsensis / J.K. Liebherr 2016 (black-bordered red label).

Etymology.

The species epithet is based on the type locality Île des Pins; the -ensis suffix denoting this locality.

Distribution and habitat.

The lone holotype is labeled only "I. des Pins" leaving the ecological situation and exact locality within which this species may occur a mystery. To extrapolate from the known habitat of its sister species, Cyphocoleus subulatus , we can predict that beetles of this species occupy dead branches with fungi, rotten logs with and without epiphytes, and the margins of small streams.

Figures

Figure 46. Parsimony cladogram of subtribe Homethina with characters indicated; character numbers above cladogram stems, state numbers below stems [cladogram divided into two parts joined at " A "]; geographic abbreviations as in Figs 44 - 45.

Figure 165. Distribution map of Cyphocoleus subulatus and Cyphocoleus iledespinsensis.

Figures 141 - 160. Male aedeagal median lobe and associated parameres of Cyphocoleus spp., dextral view: 141 - 152, Cyphocoleus globulicollis; 141, Aoupinie; 142, Me Maoya; 143, Col de Roussettes; 144, internal sac partially everted, Gelima; 145, Col d'Amieu; 146, Mt. Do; 147, internal sac everted, Ningua; 148 - 150, Mt. Dzumac Rd; 151 - 152, Mt. Koghi; 153, Cyphocoleus flavipes, Yahoue; 154, Cyphocoleus bourailensis, Bourail; 155 - 158, Cyphocoleus subulatus; 155, La Crouen; 156, Mt. Rembai; 157, Col d'Amieu; 158, Mt. Koghi; 159 - 160, Cyphocoleus iledespinsensis, Ile des Pins; 159, dextral view; 160, ventral view.

Figures 161 - 164. Dorsal habitus photographs of Cyphocoleus spp., environmental patina removed: 161, Cyphocoleus flavipes Yahoue; 162, Cyphocoleus bourailensis, Bourail; 163, Cyphocoleus subulatus, Mt. Koghi; 124, Cyphocoleus iledespinsensis, Ile des Pins.