Rhaconotinus (Hexarhaconotinus) hexatermus (Belokobylskij, 1988) 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 : 115-119

Rhaconotinus (Hexarhaconotinus) hexatermus (Belokobylskij, 1988) comb. nov.

Figs 42–43

Rhaconotus hexatermus Belokobylskij, 1988a: 98 .

Rhaconotus hexatermus – Belokobylskij 2001: 134. — Belokobylskij & Chen 2004: 354. — Yu et al. 2016.

Material examined

Holotype

CHINA • ♀; “China, Guangzhou (Canton), border of forest, cytrous plantation, Sugonyaev (leg.), 10.XI 1986 ”; ZISP.

Description

Female

MEASUREMENTS. Body length 2.3 mm; fore wing length 1.9 mm.

HEAD. Width 1.5 times its median length, 1.2 times width of mesoscutum. Head behind eyes (dorsal view) distinctly and roundly narrowed. Transverse diameter of eye 2.2 times length of temple. Ocelli small, in almost equilateral triangle; POL almost equal to OD, 0.3 times OOL. Eye with weak emargination opposite antennal socket, 1.1 times as high as broad. Malar space 0.4 times height of eye, almost equal to basal width of mandible. Face width 1.3 times height of eye and 1.7 times height of face and clypeus combined. Upper margin of clypeus situated upper lower level of eyes. Hypoclypeal depression small and round, its width 0.6–0.7 times distance from edge of depression to eye, 0.3 times width of face. Occipital carina not fused ventrally with hypostomal carina being obliterated upper base of mandible. Vertex weakly convex. Head below eyes distinctly and weakly-roundly narrowed. Antennae slender, weakly setiform, 25-segmented, 1.4 times as long as body. Scapus 1.4 times as long as its maximum width. First flagellar segment 4.5 times as long as its apical width, 1.1 times as long as second segment. Penultimate segment 4.7 times as long as wide, 0.8 times as long as first flagellar segment and 0.9 times as long as apical segment; the latter acuminate apically.

MESOSOMA. Length 2.1 times its height. Pronotal carina distinct, distances from carina to anterior margin of pronotum subequal to distance from carina to posterior margin. Mesoscutum weakly, not highly and gently-roundly elevated above pronotum (lateral view), 0.8 times as long as maximum width (dorsal view). Notauli deep anteriorly and shallow in posterior 0.4, rather wide, finely crenulate with granulation. Median lobe of mesoscutum with shallow median furrow. Prescutellar depression rather shallow, rather long, distinctly and roundly widened postero-laterally, with high median carina, entirely rugulose, 0.6 times as long as weakly convex and transverse scutellum. Sternaulus (precoxal furrow) rather narrow, almost entirely smooth, running along almost entire length of lower part of mesopleuron. Prepectal carina below without widened lobes opposite fore coxae. Subalar depression shallow, rather narrow, finely transverse striate and partly with reticulation. Metanotum with very short and rounded dorsomedial tooth (lateral view). Metapleural lobe relatively long, wide, subrounded apically, without dense pubescence.

WINGS. Fore wing 3.6 times its maximum width. Metacarpus (1-R1) 1.4 times as long as pterostigma. First radial abscissa (r) forming distinctly obtuse angle with second abscissa (3-SR). Second radial abscissa (3-SR) 2.5 times as long as first abscissa (r), 0.4 times as long as the straight third abscissa (SR1), 1.4 times as long as first radiomedial vein (2-SR). Second radiomedial (submarginal) cell medium-sized, not widened distally, 3.0 times as long as wide, 1.8 times as long as brachial (subdiscal) cell. First medial abscissa (1-SR+M) distinctly sinuate. Discoidal (discal) cell 2.2 times as long as maximum width. Mediocubital vein (M+CU1) very weakly curved to anal vein (2-1A) in distal half. Distance between nervulus (cu-a) and basal (1-M) vein 0.7 times nervulus (cu-a) length. Brachial (subdiscal) cell relatively narrow, gently-roundly closed rather distinctly before level of recurrent vein (m-cu); posterior bulla absent, posterior abscissa of longitudinal anal vein shortly developed. Hind wing 5.2 times as long as wide. First costal abscissa (C+SC+R) 0.5 times as long as second abscissa (1-SC+R). First abscissa of mediocubital vein (M+CU) 0.5 times as long as second abscissa (1-M). Recurrent vein (m-cu) unsclerotised, antefurcal, strongly curved towards base of wing.

LEGS. Hind femur with very low and wide dorsal protuberance, length of femur 2.9 times its maximum width. Hind tarsus almost as long as hind tibia. Hind basitarsus 0.6 times length of second–fifth segments combined. Second tarsal segment 0.6 times as long as basitarsus, 1.3 times as long as fifth segment (without pretarsus).

METASOMA. Length 1.2 times as long as head and mesosoma combined, with six dorsally visible tergites. First tergite without subbasal lateral processes. Maximum width of first tergite 2.2 times its basal width; length 1.1 times its apical width, 1.25 times length of propodeum. Median length of second tergite 0.7 times its basal width, 1.8 times length of third tergite. Second suture deep, narrow, weakly evenly curved. Sixth tergite strongly convex in posterior margin, without median emargination and posteroventral lobes. Sixth tergite 1.3 times as long as fifth tergite, 1.5 times as long as third or sixth tergites. Ovipositor sheath 0.3 times as long as metasoma, 0.6 times as long as hind tibia, 0.5 times as long as mesosoma, 0.2 times as long as fore wing.

SCULPTURE AND PUBESCENCE. Vertex almost entirely smooth; frons finely granulate and with dense oblique aciculation; face almost entirely finely and densely granulate; temple smooth. Mesoscutum entirely densely granulate, without rugosity along notauli and laterally, with narrow area with rugosity in its medio-posterior 0.3. Scutellum finely granulate. Mesopleuron mostly smooth. Metapleuron rugosereticulate. Propodeum in basolateral areas rugulose-coriaceous, areola large and wide, rugose-reticulate, beginning from anterior 0.2 of propodeum, 1.3 times as long as maximum width. Hind coxa rugulose dorsally, mostly smooth. Hind femur coriaceous in upper half and almost smooth in lower half. First to fifth tergites distinctly densely longitudinally striate with fine reticulation between striae, fourth and fifths tergite almost smooth in narrow posterior areas. Sixth tergite entirely curvedly striate with dense reticulation. Second–fourth tergites laterally almost entirely densely striate with reticulation. Vertex almost entirely with short, very sparse and semi-erect pale setae. Mesoscutum entirely with dense, short and semi-erect yellow setae. Mesopleuron mostly glabrous. Hind tibia dorsally with rather long, relatively sparse and semi-erect yellow setae; length of these setae 0.8–1.0 times maximum width of hind tibia.

COLOUR. Body entirely yellow. Antenna yellow in basal third, light reddish brown in medial half and reddish brown to brown apically. Palps pale yellow. Legs yellow, apical segments of all tarsi brown to dark brown. Ovipositor sheath entirely black. Fore wing hyaline. Pterostigma entirely yellow.

Male

Unknown.

Distribution

China, Vietnam.

Figures

Fig. 42. Rhaconotinus (Hexarhaconotinus) hexatermus (Belokobylskij, 1988) comb. nov., ♀, holotype, ZISP. A. Habitus, lateral view. B. Head, front view. C. Head, dorsal view. D. Head, lateral view. E. Basal segments of antenna. F. Apical segments of antenna. G. Mesosoma, dorsal view. H. Mesosoma, lateral view. I. Hind leg.

Fig. 43. Rhaconotinus (Hexarhaconotinus) hexatermus (Belokobylskij, 1988) comb. nov., ♀, holotype, ZISP. A. Fore wing. B. Hind wing. C. Propodeum and first metasomal tergite, dorsal view. D. Metasoma without first tergite, dorsal view. E. Metasoma, lateral view.