Geocharidius lencanus, Sokolov, Igor M. & Kavanaugh, David H., 2014

Sokolov, Igor M. & Kavanaugh, David H., 2014, The integripennis species group of Geocharidius Jeannel, 1963 (Carabidae, Bembidiini, Anillina) from Nuclear Central America: a taxonomic review with notes about biogeography and speciation, ZooKeys 443, pp. 61-118 : 84-86

Taxon classification Animalia Coleoptera Carabidae

Geocharidius lencanus sp. n. Figs 5C, 6G, 18B, 19 H–J, 20C, 21C, 22, 23

Type material.

HOLOTYPE, a male, in KUNHM, point-mounted, dissected, labeled: \ HONDURAS: Lempira Dept., P.N. Celaque, nr. Gracias, Campamiento Naranjo, 14°32.7'N, 88°39.7'W, 2500m, 12-13-V-2002, cloud forest litter R. Anderson, RSA2002-020 \ SM0 … KUNHM-ENT \ HOLOTYPE Geocharidius lencanus Sokolov and Kavanaugh 2014 [red label] \. PARATYPES: A total of 6 specimens (3 males and 2 females were dissected), deposited in CAS, CMNC and KUNHM; 4 specimens labeled same as holotype; 2 specimens labeled: \ HONDURAS: Lempira Dept., P.N. Celaque, nr. Gracias, Campamiento Naranjo, 2500m, 14°32.7', N 88°39.7'W, 12-13.V.2002, cloud forest litter R. Anderson, 2002-020E \ CMNC \.

Type locality.

Honduras, Lempira Department, Celaque National Park.

Etymology.

The specific epithet is a Latinized adjective in the masculine form based on the name of the indigenous people, the Lenca , living in the territory of Celaque National Park during historic times.

Recognition.

Externally, members of this species represent a larger version of Geocharidius celaquensis adults, described above. Adults of Geocharidius lencanus are distinguished from those of other members of the integripennis species group by the following combination of external characters: medium to large size, rather wide habitus and fully microsculptured dorsal body surface. Males and females of Geocharidius lencanus are distinguished from those of the other members of the integripennis species group by the structure of the median lobe and the shape of spermatheca, respectively.

Description.

Size. Medium to large for genus (SBL range 1.30-1.47 mm, mean 1.39 ± 0.091mm, n=4).

Habitus. Body form (Fig. 18B) moderately convex, ovoid, general proportions (WE/SBL 0.40 ± 0.006), proportions of head (WH/WPm 0.73 ± 0.008) and pronotum (WPm/WE 0.77 ± 0.010) average for group.

Color. Body rufotestaceous, appendages testaceous.

Microsculpture. Mesh pattern of irregularly isodiametric sculpticells present over all dorsal surfaces of head, pronotum and elytra. Proepisternum also with evident microsculpture.

Mouthparts. Maxillae and labium (Fig. 5C).

Prothorax. Pronotum moderately transverse (WPm/LP 1.28 ± 0.009), with lateral margins moderately constricted posteriorly (WPm/WPp 1.34 ± 0.019). Posterior angles slightly obtuse (100-110°). Width between posterior angles nearly equal to the width between anterior angles (WPa/WPp 1.01 ± 0.012).

Legs. Protibia (Fig. 6G).

Elytra. Moderately convex, slightly depressed along suture, markedly wide (WE/LE 0.69 ± 0.013), without traces of striae. Humeri rounded, in outline forming right angle with longitudinal axis of body. Lateral margins convex, evenly divergent in basal fourth, evenly rounded to apex in apical third.

Male genitalia. Median lobe (Fig. 19H) with shaft subparallel with a long attenuated preapical part, apex small and narrowly rounded. Ventral margin almost straight. Dorsal sclerites of internal sac in form of a long narrow fig, flagellum-like in apical two-thirds, and slightly dilated and curved dorsally in basal third. Right paramere with long and narrow apical constriction (Fig. 19J). Left paramere with long and narrow apical constriction (Fig. 19I). Ring sclerite with handle rectangularly rounded (Fig. 20C).

Female internal genitalia. Spermatheca sclerotized, fusiform, slightly dilated and rectangularly bent apically, with short cornu and long nodulus (Fig. 21C). Length of spermathecal gland less than length of spermatheca. Spermathecal duct not coiled.

Geographical distribution.

This species is known only from Celaque National Park, in the Cerro las Minas range of Honduras (Fig. 22, yellow diamond).

Way of life.

Specimens were collected by sifting cloud forest litter at an elevation of 2500 m.

Relationships.

The rectangular shape of the handle of the ring sclerite (Fig. 20C) in males and the shape of spermatheca (Fig. 21C) in females suggest a close relationship with Geocharidius celaquensis (Figs 20B, 21B), described above.