Zapotecanillus longinoi, 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 : 72-73

Zapotecanillus longinoi sp. n. Figs 31, 57-59, 67, 71, 76, 77, 90, 94

Type material.

HOLOTYPE, male, in KUNHM, point-mounted, labeled: \ MEXICO: Chiapas: Sierra Morena 16.16001°N, 93.60519°W, 1360m, 12-V-2008, ex. sifted leaf litter, 2° mesophil forest LLAMA08 Wa-A-01-1-all \ SM0833744 KUNHM-ENT \. PARATYPES (16 ex., 2♂3♀ were dissected), 9 ex. labeled same as a holotype, except barcode SM... numbers; 1 ex. labeled: \ MEXICO: Chiapas: Sierra Morena 16.15950°N, 93.60530°W, 1360m, 12-V-2008 sifted leaf litter, 2° mesophil forest LLAMA08 Wm-A-01-1 \ SM0839196 KUNHM-ENT \; 4 ex. labeled: \ MEXICO: Chiapas: Sierra Morena 16.15342°N, 93.60078°W, 1330m, 12-V-2008 ex. sifted leaf litter, 2° mesophil forest LLAMA08 Wa-A-01-2-all \ SM... KUNHM-ENT \; 2 ex. labeled: \ MEXICO: Chiapas, Mpio: Villa Corso, Ejido Sierra Morena, R. Biosfera La Sepultura, 16°09' 10.6N, 93°35' 25.1W, 1550m, 17-18.VII.2003, R. Anderson, mixed oak/pine forest litter, MEX1A03 110 \ SM... KUNHM-ENT \ (deposited in CAS, KUNHM).

Specific epithet.

The specific epithet is a Latinized eponym in the genitive case, and is based on the surname of John T. (Jack) Longino, Professor of the Biology Department of the University of Utah, and one of Co-PI’s of the LLAMA project, which provided the material on which the description of this species is based.

Type locality.

Mexico, Chiapas, Sierra Morena, 16.16001°N, 93.60519°W.

Recognition.

Adults of this new species can be distinguished from those of other species of the genus by the combination of small size and rufotestaceous color; and males can be further distinguished by the shape of the median lobe (Fig. 57).

Description.

Size. Small sized for genus (SBL range 1.01-1.12 mm, mean 1.08 ± 0.038 mm, n=12).

Habitus. Body form (Fig. 31) slightly convex, slightly elongate (WE/SBL 0.40 ± 0.10), head of normal proportions for genus (WH/WPm 0.76 ± 0.021), pronotum moderately wide compared to elytra (WPm/WE 0.76 ± 0.014).

Color. Body monocolorous, rufotestaceous, appendages testaceous.

Microsculpture. Partially effaced on disc of pronotum.

Prothorax. Pronotum relatively short (LP/LE 0.41 ± 0.010) and moderately transverse (WPm/LP 1.28 ± 0.035), with margins rectilinear and moderately constricted posteriorly (WPm/WPp 1.35 ± 0.037). Basal margin oblique laterally. Contour of posterior angles obtuse (114-125°) with 0-1 small denticles in front of the angles.

Elytra. Slightly convex, not depressed along suture, of moderate width (WE/LE 0.69 ± 0.015). Margins nearly subparallel, slightly divergent in basal forth, evenly rounded to apex in apical third, maximal width of elytra near midpoint.

Legs. 1st male protarsomere markedly dilated apico-laterally.

Male genitalia. Median lobe of aedeagus (Fig. 57), with enlarged apex and neighboring part of ventral margin. Dorsal plate 1 small, pointed apically and narrowly rounded basally. Dorsal plate 2 located close to plate 1, in form of narrow stylet and shifted slightly apically. Ventral sclerites faintly sclerotized. Right paramere short and moderately wide (Fig. 59). Left paramere as in Fig. 58. Ring sclerite with short handle widely rounded apically (Fig. 67).

Female genitalia. Gonocoxite 2 comparatively short, with moderately curved blade and narrowly rounded apex (Fig. 71). Laterotergite with 7-8 setae. Spermatheca standard for genus (Fig. 76).

Geographical distribution.

The species is known only from the type locality in the Sierra Madre de Chiapas (Figs 77 and 94, black triangles).

Way of life.

According to the label data, these beetles inhabit mesophyll and mixed oak/pine forests at low elevations.

Relationships.

In the structure of median lobe of males and geographical distribution, this species is only remotely related to its congeners. See also Fig. 90 for cladistic affinities.