Antespathius buonluoicus ( Belokobylskij, 1995 ) Belokobylskij & Zaldívar-Riverón, 2021

Belokobylskij, Sergey A. & Zaldívar-Riverón, Alejandro, 2021, Reclassification of the doryctine tribe Rhaconotini (Hymenoptera, Braconidae), European Journal of Taxonomy 741, pp. 1-168 : 10-14

Antespathius buonluoicus ( Belokobylskij, 1995) stat. nov.

Figs 1–2

Spathius (Antespathius) buonluoicus Belokobylskij, 1995: 49 .

Spathius (Antespathius) buonluoicus – Yu et al. 2016.

Material examined

Holotype VIETNAM • ♀; “ Vietnam , prov. GaiLai – ConTum, 20 km N Buon-Luoi, Tram Lap, 1–14.XII.1988, A. Sharkov ”; ZISP.

Paratypes VIETNAM • 10 ♀♀, 3 ♂♂; same collection data as for holotype but 30 Nov., 1–14 Dec. 1988; ZISP .

Description

Female

MEASUREMENTS. Body length 2.6–3.3 mm; fore wing length 1.9–2.2 mm.

HEAD. Width 1.3–1.4 times its median length, 1.3 times width of mesoscutum. Head behind eyes (dorsal view) roundly narrowed. Transverse diameter of eye 1.3–1.5 times as long as temple. Ocelli small, arranged in triangle with base 1.2 times as wide as its sides. POL 1.3–1.7 times OD, 0.3–0.5 times OOL. Eyes almost without emargination opposite antennal sockets, weakly directed forwards, 1.2–1.3 times as high as broad. Malar space 0.6 times height of eye, 1.0–1.2 times basal width of mandible. Face distinctly convex, its width 1.1–1.25 times eye height, almost equal to height of face and clypeus combined. Hypoclypeal depression width 0.7–0.8 times distance from edge of depression to eye, 0.4 times width of face. Tentorial pits distinct. Head below eyes (front view) roundly narrowed. Hypostomal flange rather wide. Maxillary palps about 1.1 times height of head (without mandibles). Antennae slender, almost filiform, 25–28-segmented. Scapus 1.8 times as long as its maximum width. First flagellar segment 4.5–5.3 times as long as its apical width, 1.25 times as long as second segment. Penultimate segment 2.7–3.1 times as long as wide, nearly as long as apical segment.

MESOSOMA. Mesosoma elongated, its length 2.1 times maximum height. Maximum width of mesoscutum 1.1 times its length. Median lobe of mesoscutum protruding forwards, distinctly convex anteriorly (dorsal view). Prescutellar depression long, rather deep, with five distinct carinae, finely reticulate between carinae, medially 0.3 times as long as scutellum. Scutellum weakly convex, 1.2 times as long as its maximum width. Subalar depression entirely longitudinally striate with dense reticulation between striae. Propodeum (lateral view) distinctly and weakly curvedly inclined from base to apex.

WINGS. Fore wing 4.5–5.0 times its maximum width. Pterostigma 5.5 times as long as wide. Metacarpus (1-R1) 0.9–1.0 times as long as pterostigma. First radial abscissa (r) inclivous to pterostigma, 0.5 times as long as maximum width of pterostigma, forming obtuse angle with second radial abscissa (3- SR). Second radial abscissa (3-SR) 6.0–7.4 times as long as first abscissa (r), 0.9–1.0 times as long as straight third abscissa (SR1), about as long as track of first radiomedial vein (2-SR). Second radiomedial (submarginal) cell (between recurrent (m-cu) and second radiomedial (r-m) veins) long and wide, about 4.0 times as long as its maximum width, 1.3 times as long as the wide brachial (subdiscal) cell. First medial abscissa (1-SR+M) weakly sinuate. Discoidal (discal) cell wide and short, 1.5–1.8 times as long as wide. Basal (1-M) and recurrent (m-cu) veins divergent posteriorly. Distance from nervulus (cu-a) to basal (1-M) vein 0.5–1.5 times nervulus (cu-a) length, nervulus (cu-a) straight and distinctly oblique towards base of wing. Hind wing 6.0 times as long as wide. Medial (basal) cell 14.8 times as long as its maximum width, 0.40–0.45 times as long as wing. Radial (SR) and medial (2-M) veins almost indistinct. First abscissa of mediocubital vein (M+CU) 0.4 times as long as second abscissa (1-M). Recurrent vein (m-cu) strongly desclerotised, weakly curved, strongly antefurcal.

LEGS. Hind coxa 1.8 times as long as maximum width, 0.7 times as long as propodeum. Hind femur 3.0– 3.1 times as long as wide. Hind tibia slender. Hind tarsus nearly as long as hind tibia. Hind basitarsus weakly thickened, without distinct ventral keel. Second segment of hind tarsus 0.5 times as long as first segment, 1.1–1.2 times as long as fifth segment (without pretarsus).

METASOMA. Weakly longer than head and mesosoma combined. Petiole dorsally convex in basal half and almost linear in apical half (lateral view), weakly widened on level of spiracles and apically (dorsal view), without convex median area. Apical width of petiole 1.2–1.5 times its width at level of spiracles, 1.6–2.0 times its minimum basal width; length of tergite 2.7–3.0 times its apical width, 1.4–1.5 times length of propodeum, 0.65–0.70 times length of other tergites combined. Median length of second and third tergites combined 2.0–2.1 times basal width of second tergite, 0.75–0.9 times their maximum width. Ovipositor sheath 1.5–1.6 times as long as petiole, 0.6 times as long as metasoma, 0.85 times as long as mesosoma, 0.4–0.5 times as long as fore wing.

SCULPTURE AND PUBESCENCE. Vertex finely transversely striate-reticulate to coriaceous; frons entirely densely, sinuate aciculate; face as in generic description; temple almost smooth in anterior half and finely vertically striate in posterior half, almost smooth below. Mesoscutum densely and finely granulate-reticulate, with two distinct and weakly convergent posteriorly carinae in its medioposterior half. Scutellum finely and densely areolate-granulate. Mesopleuron mainly smooth, with fine striation anteriorly and rugulosity posteriorly. Metapleuron vertically striate with dense reticulation between striae. Propodeum rugose-granulate in basal 0.4 and transverse striate with reticulation between striae in posterior 0.6,without areas, with medial carina in basal third.Hind coxa transverse striate dorsally, densely granulate-coriaceous to finely coriaceous laterally. Hind femur densely and finely granulate-coriaceous. Petiole densely undulately striate with dense rugulosity between striae. Second and third tergites very densely concentrically aciculate, third tergite smooth apically, fourth and fifth tergites densely and finely transversely aciculate in basal halves and smooth ion apical halves. Vertex mainly glabrous, with sparse, long and semi-erect pale setae laterally and posteriorly. Mesoscutum mainly glabrous, with very sparse, semi-erect and long pale setae arranged along notauli and laterally. Metapleuron mainly glabrous. Hind tibia dorsally with rather long, sparse, semi-erect, pale setae, their length 0.5–1.0 times maximum width of tibia.

COLOUR. Head reddish brown to light reddish brown. Mesosoma reddish brown to partly dark reddish brown. Petiole light reddish brown, second metasomal tergite dark reddish brown, remaining metasoma almost black. Antennae yellow to light brown in basal half, scapus brown dorsally, brown to dark brown in apical half. Palps reddish brown basally to yellow apically. Legs reddish brown to dark reddish brown, all coxae and tarsi (excluding fifth segments) and hind femur light reddish brown to brownish yellow; middle and hind tibiae subbasally yellow. Fore wing distinctly maculate, with brown spots nearly middle of medial (basal) cell, around basal (1-M) and recurrent (m-cu) veins and around second radiomedial (submarginal) cell. Pterostigma dark brown, pale yellow in basal ⅓ or 2 ⁄ 5.

Male

MEASUREMENTS. Body Length 2.6–2.8 mm; fore wing length 1.7–2.0 mm.

METASOMA. First metasomal tergite slender, 3.6 times as long as apical width, 1.5–1.6 times as long as propodeum.

Otherwise, similar to female.

Distribution

Vietnam.

Figures

Fig. 1. Antespathius buonluoicus (Belokobylskij, 1995), ♀, holotype, ZISP. A. Habitus, lateral view. B. Basal segments of antenna. C. Head, front view. D. Head, dorsal view. E. Head, lateral view. F. Mesosoma, dorsal view. G. Mesosoma, lateral view. H. Hind leg. I. Propodeum and petiole, dorsal view. J. Propodeum and petiole, lateral view.

Fig. 2. Antespathius buonluoicus (Belokobylskij, 1995), ♀, holotype, ZISP. A. Wings. B. Fore wing, median part. C. Metasoma, dorsal view. D. Metasoma, lateral view.