Cyphocoleus burwelli, 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 : 233

6. Cyphocoleus burwelli sp. n. Figures 71 , 79 , 83 , 86

Diagnosis.

This species and the following, Cyphocoleus angustatus , comprise a second sibling species pair, these two characterized by the narrow body: i.e. pronotum and elytra. The pronotum of Cyphocoleus burwelli is more evenly ovate, with MPW/BPW = 1.72-1.83 versus values of 1.84-1.91 for Cyphocoleus angustatus . The pronotum is also relatively narrower overall, with MPW/PL = 0.68-0.72 compared to values of 0.72-0.77 recorded for Cyphocoleus angustatus . The elytra are narrower basally in Cyphocoleus burwelli , with MEW/HuW = 2.78-3.19 versus 2.60-2.79 for Cyphocoleus angustatus , and the humeral angle is obtuse versus very distinctly right angled to slightly acute in Cyphocoleus angustatus (Figs 83 , 84 ). A male dissection can be used to confirm this diagnosis, with the aedeagal median lobe apex narrowly rounded in this species, and the internal sac bearing a stout apical tooth (Fig. 86 ). Standardized body length 11.1-12.2 mm.

Description

(n = 4). Head capsule moderately elongate, trapezoidal, with broad flange basad posterior mandibular articulation, neck distinctly constricted (Fig. 83 ); frons broadly convex between hind margin of eyes, with shallow median dimple and progressively broadened frontal grooves anteriorly; eyes small and little convex, 23-28 ommatidia across horizontal diameter; supraorbital setae absent; mandibles elongate, length 2.4 × distance from antennal articulatory socket to lateroapical margin of labrum; antennae elongate, scape length 4.2 × maximal breadth; subgenal seta absent. Pronotum with front angles only slightly protruded, obtuse angulate; lateral marginal bead continuous to just mesad evenly rounded hind angles, basal margin not beaded medially; proepipleuron and proepisternum bulging outward in basal half of pronotal length, visible in dorsal view; median longitudinal impression shallowly and finely incised, wavering along length; anterior transverse impression very shallow, barely traceable as oblique impression that reaches lateral marginal bead behind front angle; prosternal process flat anteriorly, flat to slightly depressed medially on ventral surface, convex posteriorly between procoxae. Elytra narrowly ellipsoid, moderately convex; elytral striae deep, impunctate, associated intervals moderately convex; parascutellar seta present, articulatory socket not upraised above surface of elytra; humeral angles obtuse-angulate, the juncture of basal and marginal grooves tightly rounded; lateral margin evenly convex outside anterior series of lateral elytral setae; two to three dorsal elytral setae present (setae at anterior and middle position present or absent, seta at posterior position always present); lateral elytral setae arranged as 6 + (7)8; subapical and apical elytral setae present; subapical sinuation slightly, evenly concave, sinuation meeting lateral margin in broadly convex curve; elytral apices rounded, the apical margin invaginated to meet fused elytral suture. Mesepisternum impunctate; metepisternal dorsal length 0.9 × diagonal width. Abdomen of males with apical ventrite distinctly notched medially; two setae on apical margin of apical ventrite in males (one seta each side), four setae (two each side) present on apical margin of females. Legs elongate, gracile, mt1 length/tibial length = 0.27; metacoxae bisetose; tarsomeres with short, sparsely distributed setae on dorsal surface; mt4 length of outer lobe 1.3 × median length, 6-8 ventrolateral setae each side. Microsculpture of frons isodiametric, longitudinally stretched near median dimple, head microsculpture transversely stretched on clypeus and further posterad on vertex, becoming dense transverse lines before neck constriction; pronotal and elytral disc with dense transverse-line microsculpture; pro-, meso-, and metasternum, metacoxae and abdominal ventrites with sparsely distributed pelage of moderately elongate microsetae. Coloration of head and pronotum piceous with metallic cyanotic iridescence due to microsculpture; elytra rufopiceous with similar iridescence; ventral body surface uniformly dark, piceous to rufopiceous on medial portions of apical three abdominal ventrites, apical ventrite with pale, rufoflavous apical margin; legs slightly paler than ventrites, femora and tibiae rufobrunneous with piceous case, tarsi brunneous.

Male genitalia (n = 1). Male aedeagal median lobe robust, broadly parallel sided in basal half, then tapered to rounded tip, dorsoventral breadth at midlength 0.3 × distance from tip to base of closed basal bulb (Fig. 86 ); lobe shaft brunneous, the internal sac obscured in uneverted position by the moderately melanized lobe wall; lobe apex with tapered tip, length distad ostial opening subequal to breadth; internal sac broadest at midlength, with extremely large sclerotized apical tooth and a broad ring of melanized microtrichia over middle half of sac (Fig. 86 ).

Female reproductive tract (n = 1). Bursa copulatrix vase-shaped, basally stalked, distance from base of gonocoxites to spermathecal basal sclerite 1.4 × maximum breadth (dissection compressed under cover slip) (as in Fig. 63 ); bursal walls thick, heavily pigmented by Chlorazol Black stain, with broad band of thick, densely packed spicules lining lumen over broadest part of bursa; basal gonocoxite with apical fringe of six to seven setae (Fig. 71 ); apical gonocoxite triangular with rounded apex (due to wear?) and three lateral ensiform setae.

Types.

Holotype female (MNHB deposited in MNHN): Drs. F. Sarasin&J. Roux / Neukaledonien / Mt. Humboldt (on obverse of blue label) / Gipsel, 1600 m. / 18.9.1911 (on reverse of blue label) // Cyphocoleus / ovicollis Fauv. / Det. K.M. Heller 1914 // Cyphocoleus revision / measured specimen 1 / J.K. Liebherr 2015 // HOLOTYPE / Cyphocoleus / burwelli / J.K. Liebherr 2016 (black-bordered red label).

Paratypes (3 specimens). NEW CALEDONIA: Ningua Reserve, near summit, 1300 m el., 21°45'S, 166°09'E, 13-xi-2001, Burwell & Monteith (QMB, 1); Mt. Humboldt, 1600 m el., 21°53'S, 166°26'E, 18-ix-1911, Sarasin & Roux (SMTD, 1); Mt. Kanala, Wald, 800-1000 m el., 21°34'S, 165°56'E, 04-xi-1911, Sarasin/Roux (MNHB, 1).

Etymology.

This species is named for Dr. Chris Burwell, Senior Curator of Insects, Queensland Museum, in recognition of the numerous specimens of Cyphocoleus he has collected: many representing previously undescribed species.

Distribution and habitat.

The distribution of this species ranges from Mt. Humboldt on the south, to Mt. Canala on the north (Fig. 79 ). Collection sites range in elevation from 1000-1600 m.

Figures

Figures 66 - 75. Female right gonocoxae, ventral view, for Cyphocoleus spp. illustrating apical fringe setae of basal gonocoxite 1, and two or three lateral ensiform setae, one dorsal ensiform seta, and two apical nematiform setae on apical gonocoxite 2; 66, Cyphocoleus lissus, Mt. Humboldt; 67, Cyphocoleus prolixus, Mt. Humboldt; 68, Cyphocoleus heterogenus, Yahoue; 69, Cyphocoleus parovicollis, Mandjelia; 70, Cyphocoleus ovicollis, Ningua Res.; 71, Cyphocoleus burwelli, Mt. Humboldt; 72, Cyphocoleus monteithi, Mt. Mou; 73, Cyphocoleus miricollis, Foret Nord; 74, Cyphocoleus mirabilis, Mt. Koghi; 75, Cyphocoleus lescheni, apical gonocoxite damaged, Aoupinie. Scale bar, 0.10 mm.

Figures 76 - 81. Distribution maps of Cyphocoleus spp.: 76, Cyphocoleus lissus; 77, Cyphocoleus heterogenus, Cyphocoleus prolixus; 78, Cyphocoleus parovicollis, Cyphocoleus ovicollis; 79, Cyphocoleus burwelli, Cyphocoleus angustatus, Cyphocoleus monteithi; 80, Cyphocoleus miricollis, Cyphocoleus fasciatus; 81, Cyphocoleus mirabilis, Cyphocoleus moorei, Cyphocoleus lescheni.

Figures 82 - 85. Dorsal habitus photographs of Cyphocoleus spp.: 82, Cyphocoleus ovicollis female, Ningua Res.; 83, Cyphocoleus burwelli female, Mt. Canala; 84, Cyphocoleus angustatus male, Mt. Panie; 85, Cyphocoleus monteithi male, Dzumac Rd. jct.

Figures 86 - 98. Male aedeagal median lobe and associated parameres of Cyphocoleus spp., dextral view: 86, Cyphocoleus burwelli, internal sac everted, Ningua Res.; 87, Cyphocoleus angustatus, dextroventral view, internal sac everted, Mt. Panie; 88, Cyphocoleus monteithi, Parque Prov. Riviere Bleue, Haute Pourina; 89, Cyphocoleus miricollis, Mt. Mou; 90, Cyphocoleus fasciatus, dextral view, sac partially everted, Mt. Panie; 91 - 98, Cyphocoleus cychroides; 91, internal sac everted, Mandjelia; 92 - 93, Mandjelia; 94, internal sac everted, Hienghene; 95, Touho; 96, Tionaka Tal; 97, Ateou; 98, Pic d'Amoa. Scale bars, 1.0 mm: horizontal scale for figures with transverse orientation; vertical scale for figures with vertical orientation.

Figures 60 - 65. Female reproductive tract, ventral view, for Cyphocoleus spp.; 60, Cyphocoleus lissus, Mt. Humboldt; 61, Cyphocoleus prolixus, Mt. Humboldt; 62, Cyphocoleus heterogenus, Yahoue; 63, Cyphocoleus parovicollis, Mandjelia; 64, Cyphocoleus monteithi, Mt. Mou; 65, Cyphocoleus miricollis, Foret Nord. For abbreviations see Table 1.