Acropimpla teoceloana Khalaim, 2022

Khalaim, A. I. & López-Ortega, M., 2022, A new species of Acropimpla Townes, 1960 (Hymenoptera: Ichneumonidae: Pimplinae) from Mexico, Russian Entomological Journal 31 (4), pp. 407-410 : 408-410

Acropimpla teoceloana Khalaim , sp.n.

Figs 1–9 .

MATERIAL EXAMINED. Holotype: ♀ ( UNAM), Mexico,[State of] Veracruz, Municipality Teocelo , Malaise trap, August 2017, coll. M. López-Ortega.

COMPARISON. The new species is immediately distinguished from three other North American species of Acropimpla by extensive brownish yellow markings on scutellum, postscutellum ( Fig. 4 ) and metasomal tergites 1–4 ( Figs 7, 9 ), propodeum with lateromedian longitudinal carinae developed mediodorsally ( Fig. 4 ), first tergite with lateromedian longitudinal carinae very strong and reaching posterior margin of first tergite ( Fig. 7 ), and by the shorter ovipositor ( Fig. 1 ). Acropimpla teoceloana sp.n. also differs from another Mexican species, A. tequila , by complete pleural and submetapleural carinae ( Fig. 8 ), and petiolate areolet in the fore wing ( Fig. 3 ), and from two Nearctic species by entirely reddish brown hind femur ( Fig. 8 ).

DESCRIPTION. Female. Body length 8.8 mm. Fore wing length about 6.6 mm.

Antennal flagellum with 23/24 flagellomeres. Mandible broad basally, strongly tapered in basal half, with upper tooth broader and somewhat longer than the lower tooth. Clypeus 1.8 times as broad as long, with lower margin bilobate ( Fig. 2 ). Malar space short, about 0.2 times as long as basal mandibular width. Face transverse, 1.25 times as broad as long, with weak median longitudinal prominence, with fine distinct punctures, smooth between punctures. Vertex and gena polished, with very fine and sparse punctures. Eye with short and sparse setae. Lateral ocellus separated from eye by its own maximum diameter ( Fig. 6 ). Occipital carina mediodorsally dipped and narrowly interrupted ( Fig. 6 ).

Epomia distinct, curved; pronotum behind epomia polished ( Fig. 1 ). Mesoscutum punctate on subpolished and weakly shining background; punctures denser on median lobe anteriorly and sparser posteriorly. Notaulus deep, extending in anterior 0.4 of mesoscutum ( Fig. 6 ). Mesopleuron polished, with fine and sparse punctures. Metapleuron polished, impunctate ( Fig. 8 ). Submetapleural carina strong, complete ( Fig. 8 ). Propodeum strongly convex in lateral view ( Fig. 8 ), with lateral longitudinal carinae absent anteriorly and posteriorly, but distinct centrally ( Fig. 4 ); propodeum punctate laterally ( Fig. 8 ), polished dorsally, impunctate anteriorly and posteriorly, and with moderately dense punctures centrally ( Fig. 4 ). Pleural carina distinct.

Fore wing ( Fig. 3 ) with vein 1cu-a opposite M&RS; areolet strongly oblique, triangular, petiolate above, receiving vein 2m-cu near its outer corner; petiole almost as long as vein 2rs-m. Hind wing with nervellus intercepted slightly above middle, distal section of CU distinct ( Fig. 7 ).

First tergite of metasoma about as long as posteriorly broad, abruptly angulated centrally in lateral view; lateromedi- an longitudinal carinae strong and complete (i.e. almost reaching posterior margin of first tergite), strongly converging towards centre in anterior 0.4 of tergite and weakly converging in posterior 0.6 of tergite ( Fig. 7 ); dorsolateral longitudinal carinae complete, quite strong before and behind spiracle. Second tergite distinctly transverse, 0.6 times as long as maximally broad. Tergites 2–5 densely punctate, with posterior margins smooth, with subbasal and subapical transverse impressions delimiting convex central part on each tergite (second tergite with smooth basomedian convexity across subbasal transverse impression) ( Fig. 9 ); tergite 6 with sparser punctures, with subbasal transverse impression and posterior smooth margin reduced. Sclerotised parts of sternites 2–5 brownish black. Ovipositor straight, slightly compressed laterally, projecting beyond hind margin of subgenital plate by about 1.4 times length of hind tibia; ovipositor sheath 1.6 times as long as hind tibia ( Fig. 1 ); apex of ovipositor with weak dorsal angle, dorsal valve beyond nodus slightly concave, lower valve with about four oblique teeth ( Fig. 5 ).

Head and mesosoma predominantly black ( Fig. 1 ). Antenna pale brown basally to dark brown apically; lower halfs of scape and pedicel yellow. Clypeus yellow-brown ( Fig. 2 ). Basal half of mandible yellow-brown, apical half reddish brown, teeth black. Palpi brownish yellow. Pronotum with lower corner, posterior corner and upper margin behind base of notaulus brownish yellow. Tegula, mesepimeron, dorsal parts of scutellum and postscutellum yellow ( Figs 1, 4 ). Posterior part of metapleuron and posterolateral corners of propodeum narrowly brownish yellow ( Fig. 8 ). Wings distinctly infumate with yellowish brown ( Fig. 3 ); pterostigma brown. Legs predominantly whitish yellow to brownish yellow; hind leg with coxa and femur brownish, tibia whitish with distal 0.2 fuscous ( Fig. 8 ); tarsomeres 5 of all legs infuscate. First tergite brownish yellow, mediodorsally with dark brown marks ( Fig. 7 ). Tergites 2 and 3 brownish yellow, with dark brown transverse bands in anterior about 0.3 and posterior 0.15 ( Fig. 9 ). Tergite 4 dark brown in anterior half and on posterior margin, remain- der brownish yellow ( Fig. 9 ). Tergite 5 and following tergites dark brown to brownish black.

Male. Unknown.

ETYMOLOGY. The new species is named after the type locality, Teocelo [Municipio].

DISTRIBUTION. Mexico (Veracruz).

Figures

Figs 1–5. Acropimpla teoceloana sp.n., female, holotype: 1 — habitus; 2 — head; 3 — fore wing; 4 — posterior part of mesosoma; 5 — apex of ovipositor; 1, 5 — lateral view; 2 — front view; 3 — dorsal view. Рис. 1–5. Acropimpla teoceloana sp.n., самка, голотип: 1 — внешний вид; 2 — голова; 3 — переднее крыло; 4 — ЗаднЯЯ часть меЗосомы; 5 — вершина Яйцеклада; 1, 5 — сбоку; 2 — спереди; 3 — сверху.

Figs 6–9. Acropimpla teoceloana sp.n., female, holotype: 6 — head and mesoscutum; 7 — posterior part of mesosoma and base of metasoma; 8 — propodeum and base of metasoma; 9 — posterior part of metasoma; 6–7, 9 — dorsal view; 8 — lateral view. Рис. 6–9. Acropimpla teoceloana sp.n., самка, голотип: 6 — голова и меЗоскутум; 7 — ЗаднЯЯ часть меЗосомы и основание метасомы; 8 — проподеум и основание метасомы; 9 — ЗаднЯЯ часть метасомы; 6–7, 9 — сверху; 8 — сбоку.