Zapotecanillus iviei, 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 : 63-65

Zapotecanillus iviei sp. n. Figs 21, 27, 34, 45-47, 63, 74, 77, 90, 94

Type material.

HOLOTYPE, male, in CAS, point-mounted, labeled: \ MEX: OAXACA, 2 mi S. Cerro Pelon, 8-9000 ft. 03 JUL 1982 M.A. Ivie colr.\ ex rotten pine \ Geocharidius n. sp. det. M. A. Ivie 1983 (handwriting)\. PARATYPES (34 ex., 4♂2♀ were dissected), labeled same as a holotype (deposited in CAS, MTEC).

Specific epithet.

The specific epithet is a Latinized eponym in the genitive case, and is based on the surname of Michael A. Ivie, Associate Professor and Curator of Entomology at the Montana State University, the collector of the type series of the species.

Type locality.

Mexico, Oaxaca, 2 miles S Cerro Pelon.

Recognition.

Adults of this new species can be 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 the copulatory sclerites of the median lobe (Fig. 45).

Description.

Size. Large for genus (SBL range 1.34-1.55 mm, mean 1.43 ± 0.066 mm, n=21).

Habitus. Body form (Fig. 27) slightly convex, moderately elongate (WE/SBL 0.39 ± 0.09), head of normal proportions for genus (WH/WPm 0.74 ± 0.013), pronotum narrow compared to elytra (WPm/WE 0.72 ± 0.022).

Color. Body monocolorous, rufotestaceous, appendages testaceous.

Microsculpture. Partially effaced on disc of pronotum.

Prothorax. Pronotum (Fig. 34) relatively short (LP/LE 0.39 ± 0.011) and slightly transverse (WPm/LP 1.22 ± 0.025), with margins slightly sinuate and markedly constricted posteriorly (WPm/WPp 1.42 ± 0.039). Basal margin oblique laterally. Contour of posterior angles obtuse (114-124°) without or with 1 small denticle in front of the angles.

Elytra. Slightly convex, not depressed along suture, rather narrow (WE/LE 0.66 ± 0.019). Margins subparallel at middle, slightly divergent in basal forth, evenly rounded to apex in apical forth, maximal width of elytra at midpoint.

Legs. 1st male protarsomere markedly dilated apico-laterally (Fig. 21).

Male genitalia. Median lobe of aedeagus (Fig. 45), with small, slightly elongated apex, angulately rounded at tip. Dorsal plate 1 long, with long apical attenuation. Dorsal plate 2 joined to plate 1 at its middle ventrally, where it forms a distinct protuberance. Ventral sclerites weakly sclerotized. Right paramere rather long and narrow (Fig. 47). Left paramere without apical constriction (Fig. 46). Ring sclerite with short handle, which is widely rounded apically (Fig. 63).

Female genitalia. Spermatheca (Fig. 74) standard for genus.

Geographical distribution.

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

Way of life.

According to the label data (elevation ranges 2600-2700m), these beetles inhabit the pine-oak forest zone of the Sierra Madre de Oaxaca.

Relationships.

Externally, adults of Zapotecanillus iviei are similar to those of Zapotecanillus kavanaughi , Zapotecanillus pecki and Zapotecanillus montanus , described below, but the armature of the internal sac of the median lobe suggests closer relatedness to Zapotecanillus oaxacanus , Zapotecanillus nanus and Zapotecanillus ixtlanus . See also Fig. 90 for cladistic affinities.