Cyphocoleus heterogenus Chaudoir, 1877

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 : 229

3. Cyphocoleus heterogenus Chaudoir, 1877 Figures 28 , 49 , 53-54 , 62 , 68 , 77

Diagnosis.

Beetles as large as Cyphocoleus prolixus , standardized body length 10.8-13.1 mm, but head and prothorax much broader, the head much more developed at the expense of pronotal length (Figs 48 , 49 ).Though the mandibles are shorter than in Cyphocoleus prolixus , with mandibular length 2.0 × distance from antennal socket to anterolateral margin of labrum, the antennae are longer, with scape length 4.1 × maximal breadth. The pronotum is unique among Cyphocoleus due to the extremely elongate, acutely protruded front angles. The presence of three dorsal elytral setae is shared only with Cyphocoleus ovicollis (Fig. 82 ), all other species exhibiting more reduced numbers of dorsal elytral setae or none at all.

Description

(n = 5). Head capsule broad, robust, distance from clypeal-labral suture subequal to width across eyes; frons broadly convex, with small chevron-shaped indentation medially between front margins of eyes; eyes moderately large, convex, 28 ommatidia across horizontal diameter; eyes moderately small, convex, ocular ratio 1.35-1.42; only posterior supraorbital seta present; neck distinctly impressed just before juncture with prothorax; gena glabrous, subgenal seta absent. Pronotum distinctly cordate, margin sinuately constricted basally; lateral marginal bead present from acute front angles to just mesad tightly rounded hind angles; median base margin by fine bead; proepisternum slightly bulging, visible in dorsal view along middle half of prothorax; median longitudinal impression shallow, finely incised; anterior transverse impression broad, shallow, obliquely meeting median impression; anterior callosity slightly convex; prosternal process with fine median ridge anteriorly between procoxae, medially depressed on ventral and posterior face. Elytra broadly ovoid, disc moderately convex with side only moderately depressed relative to disc; elytral striae impunctate; parascutellar seta present, articulatory socket not upraised above elytral surface; elytra narrow basally, humeri obtuse-angulate at base of fifth stria; lateral margin straight to slightly concave lateral anterior series of lateral elytral setae; lateral elytral setae arranged as 6 + 1 + 7-8; subapical and apical elytral setae present; subapical sinuation distinctly invaginated, curvature greatest just mesad obtusely rounded juncture of sinuation and lateral margin. Mesepisternum impunctate; metepisternal dorsal length 0.86 × diagonal width. Abdomen of males with apical margin of apical ventrite distinctly notched, the invagination smoothly rounded; apical ventrite of male with one seta each side, of female with two setae each side. Legs elongate, gracile, mt1 length/tibial length = 0.26; metacoxae bisetose; tarsomeres with short sparse setae dorsally; mt4 outer lobe 1.7 × median length, 4-5 ventrolateral setae each side. Microsculpture of frons and vertex a stretched isodiametric mesh; pronotal disc and discal elytral intervals covered with fine transverse lines; dorsal surface of body apparently glabrous except for standard macrosetae; pro-, meso-, and metasternum and visible abdominal ventrites with sparsely distributed pelage of very short setae. Coloration of dorsum rufopiceous with cyanotic to cupreous iridescence due to microsculpture; antennae dark rufous, paler apically, palps brunneous; basal abdominal ventrites rufopiceous, ventrite 6 rufobrunneous, margin narrowly brunneous; femora rufopiceous, tibiae rufobrunneous, tarsi slightly paler, dark rufous.

Male genitalia (n = 8). Male aedeagal median lobe robust, broadly parallel sided in basal 3/4 of length, then evenly narrowed to projected, narrow tip, dorsoventral breadth at midlength 0.25 × distance from tip to base of closed basal bulb (Fig. 53 ); lobe shaft slightly melanized, the internal sac visible through lobe wall in uneverted position; lobe apex tapered to tightly rounded tip, length distad ostial opening 2.5 × dorsoventral breadth; internal sac evenly covered with short melanized spicules in distal half, of sinuous shape but sides parallel in extension (Fig. 54 ).

Female reproductive tract (n = 2). Bursa copulatrix vase-shaped, basally stalked, distance from base of gonocoxites to spermathecal basal sclerite 2.4 × maximum breadth (dissection compressed under cover slip) (Fig. 62 ); bursal walls thin, translucent, with broad band of spicules lining lumen near midlength; basal gonocoxite with apical fringe of seven to eight setae (Fig. 68 ); apical gonocoxite broadly rounded at apex with three lateral ensiform setae.

Type.

Holotype male (MNHN): Ex Musæo / Chaudoir (red-inked white label with red border) // HOLOTYPE / Cyphocoleus / heterogenus / Chaudoir 1877 (black-bordered red label). Holotype status is based on Chaudoir’s (1887: 193) statement "Cet insecte m’a été cédé par M. Sallé.” Yahoué hereby designated type locality.

Distribution and habitat.

Found throughout Grande Terre, from Mt. Ignambi and Mt. Panié on the north, to Forêt de Thi on the south (Fig. 77 , Suppl. material 3). Beetles have been collected from pyrethrin spray samples from trees and logs, with and without epiphytes, from under a rock near a dead tree, from Freycinetia axils, and by hand during night.

Figures

Figures 28 - 33. 28 - 32 Male aedeagus with associated abdominal segments VIII and IX, dorsal view, Cyphocoleus spp.: 28, Cyphocoleus heterogenus; 29, Cyphocoleus angustatus; 30, Cyphocoleus mirabilis; 31, Cyphocoleus cordatus; 32, Cyphocoleus subulatus. 33. Abdominal lateroventrites VIII (left) and laterotergites VIII (right), showing membranous division of laterotergites, male Cyphocoleus latipennis. Dorsal gland reservoir is globose without dorsal lobe. For abbreviations see Table 1.

Figures 47 - 50. Dorsal habitus photographs of Cyphocoleus spp.: 47, Cyphocoleus lissus female, Mt. Humboldt; 48, Cyphocoleus prolixus male, Mt. Humboldt; 49, Cyphocoleus heterogenus male, Yahoue; 50, Cyphocoleus parovicollis male, Pic d'Amoa.

Figures 51 - 59. Male aedeagal median lobe and associated parameres of Cyphocoleus spp., dextral view: 51, Cyphocoleus lissus, Mt. Humboldt; 52, Cyphocoleus prolixus, Mt. Humboldt; 53, Cyphocoleus heterogenus, Yahoue; 54, Cyphocoleus heterogenus, internal sac everted, La Foa; 55, Cyphocoleus parovicollis, Me Maoya; 56, Cyphocoleus parovicollis, internal sac everted, Me Maoya; 57, Cyphocoleus ovicollis, Ningua Res.; 58 - 59, Cyphocoleus ovicollis, internal sac everted, Mt. Do; 58, laevoventral view; 59, dextrodorsal view. 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.

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.