Pimpla chamela Khalaim & Ruíz-Cancino, 2021

Khalaim, Andrey I. & Ruíz-Cancino, Enrique, 2021, Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: genera Apechthis Förster, Itoplectis Förster and Pimpla Fabricius, Zootaxa 5071 (4), pp. 451-491 : 468

4. Pimpla chamela Khalaim & Ruíz-Cancino , sp. nov.

( Fig. 28 )

Material examined. Holotype female ( UAT), Mexico, Jalisco, La Huerta, Estación Biológica Chamela, Vereda Tejón , 600 m, Malaise trap, 7–10.iii.2000, coll. M.A. Sarmiento, CIB 00-0071.

Paratypes. MEXICO. Jalisco: 1 ♂ ( UAT) same data as holotype . GUATEMALA. 1 ♀ ( AEIC) Zacapa, 8 km N of San Lorenzo , 7–19.vii.1986, coll. J.M. Campbell.

Description. Female. Fore wing length 6.7 mm.

Head in dorsal view with genae short, strongly constricted behind eyes. Frons concave, with distinct longitudinal median groove. Posterior ocellus separated from face eye by 0.65× its own maximum diameter. Mandible apically strongly narrowed, with upper tooth much longer than the lower tooth. Clypeus in profile convex in upper part and flat in lower part; in anterior view 1.6× as broad as long, with lower margin distinctly concave. Malar space 0.65× as long as basal mandibular width. Face with dense distinct punctures, smooth between punctures.

Mesoscutum smooth, weakly shining, with very shallow inconspicuous punctures. Scutellum in pofile convex. Mesopleuron polished, with very fine punctures. Epicnemial carina reaching above level of centre of pronotum. Metapleuron convex, finely punctate in upper part and smooth in lower part. Submetapleural carina complete. Propodeum in profile evenly rounded, with numerous fine transverse wrinkles dorsally and laterally, more or less smooth posteriorly. Pleural carina complete.

Fore wing with vein RS straigh, only curved distally. Vein 1cu-a (nervulus) distinctly postfurcal; in the holotype separated from M&RS (basal vein) by 0.35 its own length.

First tergite 1.2× as long as posteriorly broad, in lateral view with dorsal surface centrally convex, the swelling angled at about 45º. Tergites 2–4 dorsally with coarse and dense punctures (distance between punctures mostly shorter than one diameter of puncture), smooth and shining between punctures. Laterotergites 2–5 very narrow; second laterotergite about 0.15× as broad as long. Ovipositor sheath as long as hind tibia. Ovipositor slightly decurved, its apex with about five oblique teeth on lower valve, and with a row of fine denticles laterally on each side of upper valve; lower valve not enclosing the upper.

Predominantly black species ( Fig. 28 ). Upper margin of pronotum with short white stripe posteriorly. Wings weakly infumate with yellow, pterostigma brown. Fore and mid femora, tibiae and tarsi brown to brownish black. Hind femur with reddish brown mark basally, and hind tibia slightly reddish brown subbasally on outer surface.

Male. Similar to female but malar space somewhat shorter, tegula pale in anterior half, and fore and mid femora and tibiae extensively white marked on inner surface.

Variation. Female from Guatemala is somewhat larger than the holotype, with the first tergite angled in posterior 0.7, ovipositor sheath 0.8× as long as hind tibia, and fore femur and tibia extensively yellow marked.

Etymology. This species is named after the type locality, [Biological Station] Chamela.

Distribution. Mexico (Jalisco), Guatemala.

Comparison. Similar to the Central American P. sedula Cameron as both are almost entirely black ( Fig. 28 ), but differs by the first tergite in profile weakly angulate (pyramidal in P. sedula ), fore wing with vein 1cu-a (nervulus) distinctly postfurcal, and face and second and following tergites distinctly punctate.

Figures

FIGURES 28–31. Pimpla chamela sp. nov., female: 28—habitus (without head and wings), lateral. Pimpla croceipes, female: 29—habitus (without antennae and wing apices), lateral. Pimpla croceiventris, male: 30—habitus (without antennae and wing apices), lateral; 31—mesosoma, dorsal.