Cyphocoleus parovicollis, 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 : 230-232

4. Cyphocoleus parovicollis sp. n. Figures 50 , 55-56 , 63 , 69 , 78

Diagnosis.

This species and its following adelphotaxon are difficult to diagnose practically (Figs 50 , 82 ), yet are clearly separate species. They can be diagnosed by the more convex eyes in beetles of this species, ocular ratio 1.47-1.55, and presence of four apical abdominal setae in males - two setae each side of apical visible abdominal ventrite - versus two apical abdominal setae - one each side - in males of Cyphocoleus ovicollis . The pronotum is generally narrower basally among individuals of this species - MPW/BPW = 1.87-2.10 - but the values overlap in the two species, with individuals of Cyphocoleus ovicollis ranging in values 2.04-2.29 for the same ratio. If a male is available, the identity based on abdominal setation can be confirmed based on the very different aedeagal internal sacs: that of Cyphocoleus parovicollis exhibiting an apical “cockscomb” of large, densely pack macrotrichia (Fig. 56 ). The allopatric geographic distributions can assist in the sorting of these two species, with Cyphocoleus parovicollis distributed to the north of Cyphocoleus ovicollis (Fig. 78 ). Standardized body length 9.4-12.1 mm.

Description

(n = 5). Head capsule moderately broad, gena elongate anterad constricted neck (Fig. 50 ); frons broadly convex, but with variably developed chevron-shaped depression medially between eyes; supraorbital setae absent; mandibles elongate, length 2.5 × distance from antennal articulatory socket to anterolateral margin of labrum; antennae very elongate, scape length 4.33 × maximal breadth; supraorbital setae absent; gena glabrous, subgenal seta absent. Pronotum narrowly obovoid, MPW/PL = 0.78-0.88; front angles slightly protruded, right to slightly obtuse; lateral marginal bead continuous to obtuse-rounded basal angles and across straight median base; proepisternum bulging outward and so visible in dorsal view for middle half of pronotal length; median longitudinal impression deep, finely incised, terminated posteriorly in variably developed transverse depression; anterior transverse impression very shallow, obliquely paralleling anterior pronotal margin; prosternal process indistinctly depressed medially on ventral surface. Elytra narrowly subellipsoid, MEW/EL = 0.65-0.70; disc broadly and moderately convex; elytral striae deep, impunctate, associated intervals broadly convex; parascutellar seta present, socket not upraised above elytral surface; humeri very narrow, distinctly obtuse-angulate at base of fifth stria; elytral lateral margin convex laterad anterior series of lateral elytral setae; two to three dorsal elytral setae present (setae at anterior and middle positions always present, posterior seta present or absent); lateral elytral setae arranged as 6+ 1(0) + 7; subapical and apical setae present; subapical sinuation broadly and slightly concave, joining lateral margin in a broad curve; elytral apices tightly rounded, slightly separated from suture. Mesepisternum impunctate; metepisternum dorsal length 0.93 × diagonal width. Abdomen of males with distinct, narrow notch medially on apical margin of apical ventrite; females with two setae each side on apical margin of apical ventrite. Legs elongate, gracile, mt1 length/tibial length 0.26; metacoxae bisetose; tarsomeres with short, sparse seta on dorsum; mt4 outer lobe 1.5 × median length, 4-5 lateroventral setae each side. Microsculpture of frons transversely stretched isodiametric mesh to distinctly transverse mesh on vertex; pronotal disc with dense transverse-line microsculpture loosely organized into a mesh; elytral disc with dense transverse lines resulting in cyanotic to cupreous iridescence; pro-, meso-, and metasternum with sparse pelage of short microsetae, abdominal ventrites and dorsal body surface apparently glabrous. Coloration of head capsule rufopiceous, antennae rufobrunneous with piceous cast on antennomeres 1-3; pronotum piceous, proepipleuron and proepisternum rufopiceous; elytra rufopiceous; elytral epipleuron rufous, metepisternum rufopiceous; femora and tibiae rufobrunneous, tarsi rufoflavous.

Male genitalia (n = 4). Male aedeagal median lobe robust, broadly parallel sided to near distal margin of ostial opening, dorsoventral breadth at midlength 0.2 × distance from tip to base of closed basal bulb (Fig. 55 ); lobe shaft brunneous, the internal sac obscured in uneverted position by the moderately melanized lobe wall; lobe apex with broadly rounded tip, tip skewed toward the left side of lobe, length distad ostial opening only slightly more than breadth; internal sac with apical “cockscomb” composed of densely packed, elongate, melanized, spike-like macrotrichia, the sac broadest at midlength (Fig. 56 ).

Female reproductive tract (n = 2). Bursa copulatrix vase-shaped, basally stalked, distance from base of gonocoxites to spermathecal basal sclerite 1.8 × maximum breadth (dissection compressed under cover slip) (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 setae, an additional small seventh seta observed in one individual (Fig. 69 ); apical gonocoxite acuminate with narrowly rounded apex and three lateral ensiform setae.

Type.

Holotype male (QMB deposited in MNHN): NEW CALEDONIA 8682 / 20°58 ’Sx165°17’. 500m / Pic d’Amoa, N slopes / 24Nov2001. GBMonteith / Pyrethrum, trees & logs // QUEENSLAND / MUSEUM LOAN / Date: Nov. 2003 / no. LEN-1688 (green label) // Cyphocoleus / n. sp. / ovicollis male 9 / det. J.K. Liebherr 2015 // genitalia vial // HOLOTYPE / Cyphocoleus / parovipennis / J.K. Liebherr 2016 (black-bordered red label) .

Paratypes (30 specimens). NEW CALEDONIA: Mandjélia, above Pouébo 600-750 m el, 20°24'S, 164°32'E, 11-13-v-1984, Monteith & Cook (QMB,1); Mt. Panié refuge, 1300 m el., 20°34'S, 164°46'E, 16-18-xi-2000, Bouchard, Burwell & Monteith (QMB, 1; lot no. 9938); Pic d’Amoa, N slopes, 500 m el., hand collecting, 20°58'S, 165°17'E, 10-11-xi- 2001, Burwell & Monteith (QMB, 1; lot no. 8687); Aoupinié, 850 m el., 21°11'S, 165°19'E, 20-21-xi-2000, Bouchard, Burwell & Monteith (QMB, 2; lot no. 9930), summit, 1000 m el., pyrethrum trees & logs, 21°11'S, 165°16'E, 02-x-2004, Monteith (QMB, 1; lot no. 11665), 21°11'S, 165°19'E, 12 -xii-1993, Raven (QMB, 1); Me Maoya, near summit, 1400 m el., pyrethrum trees & logs, 21°22'S, 165°20'E, 12-xi-2002, Burwell & Monteith (QMB, 1; lot no. 11163); Me Maoya camp, 1150 m el., night collecting, 21°22'S, 165°20'E, 11-12-xi- 2002, Burwell, Monteith & Wright (QMB, 15; lot no. 11159), pyrethrum trees & logs, 11-13-xi-2002, Monteith & Burwell (QMB, 5; lot no. 11158); Me Maoya, near summit, 1300 m el., pyrethrum trees & logs, 21°22'S, 165°20'E, 12-xi-2002, Monteith & Burwell (QMB, 2; lot no. 11169) .

Etymology.

The adelphotaxon status and great similarity of this species and Cyphocoleus ovicollis (Figs 46 , 50 , 82 ) is signified through use of parovicollis as this species’ epithet: i.e. equal to ovicollis .

Distribution and habitat.

This species is distributed in the northern half of Grande Terre, allopatric with its adelphotaxon, Cyphocoleus ovicollis , which is distributed to the south (Fig. 78 ). Beetles have been collected from tree trunks and downed logs via pyrethrin fog, and also by hand collecting at night.

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.

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.