Zapotecanillus kavanaughi, Sokolov, Igor M., 2013

Sokolov, Igor M., 2013, A new genus and eight new species of the subtribe Anillina (Carabidae, Trechinae, Bembidiini) from Mexico, with a cladistic analysis and some notes on the evolution of the genus, ZooKeys 352, pp. 51-92 : 65-67

Zapotecanillus kavanaughi sp. n. Figs 23, 28, 33, 54-56, 66, 70, 75, 77, 90, 94

Type material.

HOLOTYPE, male, in CMNC, point-mounted, labeled: \MEX. Oax. 14km N SanJuan del Estado 2600m. 4-VIII.1986 H. & A. Howden\ berlese\ CMNC\. PARATYPES (8 ex., 2♂2♀ were dissected), labeled same as a holotype (deposited in CAS, CMNC).

Specific epithet.

The specific epithet is a Latinized eponym in the genitive case, and is based on the surname of David H. Kavanaugh, Senior Curator of the Entomology Department of the California Academy of Sciences, whose enthusiastic efforts in locating and borrowing the material for the current investigation were so magnanimous and productive.

Type locality.

Mexico, Oaxaca, 14 km N San Juan del Estado.

Recognition.

Adults of this new species are distinguished from those of other species of the genus by the combination of elongate habitus and comparatively narrow pronotum; and males can be further distinguished by the shape of median lobe (Fig. 54).

Description.

Size. Medium-sized for genus (SBL range 1.25-1.42 mm, mean 1.34 ± 0.055 mm, n=9).

Habitus. Body form (Fig. 28) slightly convex, moderately elongate (WE/SBL 0.38 ± 0.13), head of normal proportions for genus (WH/WPm 0.77 ± 0.014), pronotum narrow compared to elytra (WPm/WE 0.74 ± 0.020).

Color. Body monocolorous, rufotestaceous, appendages testaceous.

Microsculpture. Partially effaced on disc of pronotum.

Prothorax. Pronotum (Fig. 33) relatively short (LP/LE 0.40 ± 0.009) and slightly transverse (WPm/LP 1.23 ± 0.031), with margins rectilinear and distinctly constricted posteriorly (WPm/WPp 1.36 ± 0.039). Basal margin oblique laterally. Contour of posterior angles obtuse (116-122°) with 1-2 small denticles in front of the angles.

Elytra. Slightly convex, not depressed along suture, rather narrow (WE/LE 0.66 ± 0.023). Margins almost subparallel, slightly divergent in basal half, evenly rounded to apex in apical third, maximal width of elytra posterior to midpoint.

Legs. 1st male protarsomere not dilated, without adhesive vestiture (Fig. 23).

Male genitalia. Median lobe of aedeagus (Fig. 54), with very narrow, elongate apex. Dorsal plate 1 short, pointed basally, with apical attenuation of moderate length. Dorsal sclerite 2 in a form of a separate structure, crosses plate 1 at apical third. Ventral sclerites slightly sclerotized. Right paramere rather long and moderately wide (Fig. 56). Left paramere without apical constriction (Fig. 55). Ring sclerite with long handle-like extension, widely rounded apically (Fig. 66).

Female genitalia. Gonocoxite 2 comparatively short, with moderately curved blade and rounded apex (Fig. 70). Laterotergite with 5-6 setae. Spermatheca atypical for genus (Fig. 75).

Geographical distribution.

The species is known only from the type locality in the Sierra Aloapaneca Range, a part of the Sierra Madre de Oaxaca (Figs 77 and 94, black circle).

Way of life.

All beetles were collected at an elevation of 2600 m.

Relationships.

Externally, adults of Zapotecanillus kavanaughi are similar to those of Zapotecanillus iviei , Zapotecanillus pecki and Zapotecanillus montanus , described below, but males and females differ from those of these species in features of the median lobe and shape of the spermatheca, respectively. See also Fig. 90 for cladistic affinities.