Cyphocoleus bourailensis, 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 : 252

20. Cyphocoleus bourailensis sp. n. Figures 119 , 140 , 154 , 162

Diagnosis.

This species shares the well-developed dorsal microsculpture, transversely wrinkled pronotum, and punctate elytral striae with Cyphocoleus flavipes (Fig. 161 ). But in beetles of this species, the pronotal transverse wrinkles are continuous across the pronotum, continued from the parasagittal impressions to the marginal bead, and the elytral strial punctures are larger and more circular causing greater lateral expansion of the striae (Fig. 162 ). The legs are also darker overall, without the pale median band on the femora as observed in Cyphocoleus flavipes . Standardized body length 6.0-7.0 mm.

Description

(n = 5). Head capsule broad, genae short, neck only slightly constricted; eyes moderately convex but profile not exceeding curvature of gena on posterior portion of eye, ocular ratio 1.44-1.61, 16 ommatidia across horizontal diameter of eye; frons with chevron-shaped median elevation surrounded by hemicircular depressions, the broad part of the chevron continued anteriorly as median flat area bordered by frontal grooves; frontal grooves narrow with lateral marginal carina to mesad eyes, sinuously extended anterad to a broad, rounded depression just posterad frontoclypeal suture; mandibles moderately elongate, length 1.9 × distance from antennal articulatory socket to anterolateral margin of labrum; antennae of moderate proportions, scape length 2.4 × maximal breadth; gena setose, subgenal seta present. Pronotum with front angles rounded, only slightly protruded, very obtuse; lateral marginal bead slightly sinuate before depressed median base that is margined medially; median longitudinal impression finely incised, interrupted in part by transverse wrinkles, extended nearly to anterior marginal bead; anterior transverse impression a shallow, irregular border on the anterior margin of the discal transverse wrinkles, defining an irregularly, longitudinally wrinkled anterior callosity; proepisternum not extended beyond marginal bead in dorsal view, anteriorly with irregularly, arcuately wrinkled from front to dorsal margin; prosternal process slightly concave anterad procoxae, broadly and deeply depressed medially on ventral face, broadly convex posteriorly. Elytra broadly cordate, basal margin concave from scutellum to third stria, then extended anteriorly across broadly rounded humerus; small pits at the base of the parascutellar and third stria; discal intervals moderately convex, all intervals of subequal convexity; elytral striae finely incised at depth, deep, distinctly punctate, the punctures greatly expanding strial breadth throughout their length; parascutellar seta present, articulatory socket papillate; dorsal elytral setae absent; lateral elytral setae arranged as 6 + 7, the articulatory sockets papillate; both subapical and apical elytral setae present, the articulatory socket for apical seta smaller, not papillate; subapical sinuation distinctly concave laterally, subangularly meeting lateral margin, margin slightly convex medially in dorsal view; elytral apices conjoined, margin not or minutely invaginated at fused suture. Mesepisternum impunctate; metepisternal dorsal length subequal to diagonal width; metasternum with broad, shallow median depression at base of metasternal process. Abdomen with apical margin of apical ventrite shallowly concave medially in both males and females; males with one seta each side of apical margin of apical ventrite, females with two setae each side. Legs moderately elongate; metacoxae bisetose; mt1 length/tibial length = 0.25; mt4 length to apex of outer lobe 1.8 × median tarsomere length, 3-4 ventrolateral setae each side. Microsculpture well developed on head, isodiametric sculpticells on median elevation, vertex and neck with more transverse sculpticells defining a regular mesh; elevated portions of pronotal disc with shallow transverse-mesh microsculpture, wrinkled lined with granulate isodiametric sculpticells; elytral intervals with mix of transverse mesh, sculpticell breadth 3 × length, and transverse lines loosely joined into a mesh; pelage little developed, head apparently glabrous, prothoracic and elytral disc with extremely short microsetae visible only in lateral view. Coloration of body dorsum piceous; prosternum piceous; meso- and metathoracic sternites, and abdominal ventrites dark rufous, apical margin of apical ventrite paler, brunneous to flavous; femora and tibiae dark rufous to match abdomen, tarsi slightly paler, brunneous.

Male genitalia (n = 3). Male aedeagal median lobe gracile, parallel sided, dorsoventral breadth at midlength 0.18 × distance from tip to base of closed basal bulb (Figs 154 ); lobe apex extended little beyond distal margin of ostial opening, broadly rounded; internal sac membranous without melanized microtrichia (uneverted view).

Female reproductive tract (n = 1). Bursa copulatrix columnar, distance from base of gonocoxites to spermathecal basal sclerite at least 2 × maximum breadth (dissection broken); bursal walls thin, translucent, lumenal surface smooth in portion examined; basal gonocoxite with apical fringe of five setae (Fig. 119 ); apical gonocoxite broadly subtriangular with pointed apex and two lateral ensiform setae.

Types.

Holotype female (MNHN): (dissected female, pointed with abdominal ventrites glued onto second point below) Bourail // Cyphocoleus revision / measured specimen 1 / J.K. Liebherr 2015 // Cyphocoleus / n.sp. latipennis / female 1 Bourail / det. J.K. Liebherr 2015 // genitalia vial // HOLOTYPE / Cyphocoleus / bourailensis / J.K. Liebherr 2016 (black-margined red label).

Paratypes (7 specimens found in header-labeled series including holotype and labeled paratype; General Coleoptera Collection, MNHN): Bourail (dissected female remounted as holotype); 6 unlabeled (2 dissected males remounted on point and platen, 1 undissected male on original platen, 1 undissected male remounted on point (Fig. 162 ), 2 teneral specimens on original platens).

Etymology.

The species epithet is based on the type locality Bourail, with the -ensis suffix denoting this locality.

Distribution and habitat.

As this species is known only from a single series of specimens with the header specimens labeled Bourail, we know only the general collecting locality: Bourail (Fig. 140 ).

Figures

Figures 113 - 120. Female right gonocoxae, ventral view, for Cyphocoleus spp. illustrating apical fringe setae of basal gonocoxite 1, and two lateral ensiform setae, one dorsal ensiform seta, and two apical nematiform setae on apical gonocoxite 2; 113, Cyphocoleus fasciatus, Mt. Panie; 114, Cyphocoleus cychroides, Pic d'Amoa; 115, Cyphocoleus latipennis Mt. Panie; 116, Cyphocoleus cordatus, Foret Nord; 117, Cyphocoleus globulicollis, Col des Roussettes; 118, Cyphocoleus flavipes, Noumea; 119, Cyphocoleus bourailensis, Bourail; 120, Cyphocoleus subulatus, Foret de Thi. Scale bar, 0.10 mm.

Figures 137 - 140. Distribution maps of Cyphocoleus spp.: 137, Cyphocoleus cychroides, Cyphocoleus cordatus, Cyphocoleus cardiopterus; 138, Cyphocoleus latipennis; 139, Cyphocoleus globulicollis; 140 Cyphocoleus flavipes, Cyphocoleus bourailensis.

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.