Doryctes (Neodoryctes) arrujumi Belokobylskij, 2021

Belokobylskij, Sergey A. & Achterberg, Cornelis Van, 2021, Review of the braconid parasitoid subfamily Doryctinae (Hymenoptera, Braconidae) from the United Arab Emirates and Yemen, European Journal of Taxonomy 765 (1), pp. 1-143 : 19-23

Doryctes (Neodoryctes) arrujumi Belokobylskij sp. nov.

urn:lsid:zoobank.org:act:7413E4A3-1F4A-4B48-8869-1798B3B67E4A

Figs 7–8

Comparative diagnosis

This new species is very similar to Doryctes (Neodoryctes) variegatus Szépligeti, 1914 from Tanzania, but differs from it by sparse setae on the dorsal surface of the hind tibia (dense in D. variegatus ), the hind femur mainly brownish yellow or light reddish brown (mainly dark brown in D. variegatus ), the median lobe of the mesoscutum with complete shallow medial furrow (without furrow in D. variegatus ), second radiomedial cell short (longer in D. variegatus ), and first medial abscissa not or very weakly sinuate (distinctly sinuate in D. variegatus ).

Etymology

Named after the type locality of the new species, Ar Rujum.

Type material

Holotype YEMEN • ♀; “Yemen (5556), Ar Rujum, 15.i–9.iv.2001, Mal. trap, A.v. Harten RMNH’02”; RMNH.

Paratypes YEMEN • 1 ♀; “Yemen (5700), Ar Rujum, 9.iv–5.vi.2001, Mal. trap; A.v. Harten RMNH’02”; RMNH .

SAUDI ARABIA • 1 ♀; “Saudi Arabien, W. Büttiker ”, “Namas, 2380 m, 17.IV.1980 ”; BMNH .

Description

Female

MEASUREMENTS. Body length 4.8–5.2 mm; fore wing length 3.5–3.9 mm.

HEAD. Head width (dorsal view) 1.4–1.6 times its median length, 1.10–1.15 times width of mesoscutum. Head behind eyes (dorsal view) weakly convex in anterior half, roundly narrowed in posterior half. Transverse diameter of eye (dorsal view) 1.3–1.5 times longer than temple. Ocelli medium-sized to small, arranged in triangle with base 1.1 times its sides. POL 1.2–2.0 times Od, 0.5–0.6 times OOL. Eye glabrous, its maximum diameter 1.20–1.25 times minimum diameter. Malar space 0.3–0.4 times maximum diameter of eye, 0.6–0.8 times basal width of mandible. Face convex, its width 0.9–1.1 times maximum diameter of eye, 1.2–1.4 times height of face and clypeus combined. Clypeal suture complete, distinct laterally and dorsally. Hypoclypeal depression medium-sized and rounded, its width 0.9 times shortest distance from edge to eye, 0.4 times width of face. Occipital carina dorsally complete and not broken toward ocellar triangle, not reaching below hypostomal carina and obliterated short distance before mandible base. Hypostomal flange narrow.

ANTENNA. Antenna slender, weakly setiform, 34-segmented, 0.9 times as long as body. Scape 1.6–1.8 times longer than maximum width. First flagellar segment 4.5–5.0 times longer than apical width, 1.1 times longer than second segment. Penultimate segment 4.3 times longer than width. 0.5 times as long as first segment, 0.9 times as long as apical segment; latter acuminate apically.

MESOSOMA. Mesosoma not depressed, its maximum length 2.1–2.2 times its maximum height. Pronotal carina distinct, situated in anterior 0.3 of pronotum. Mesoscutum (lateral view) not highly, but distinctly curvedly elevated above pronotum, its median lobe (dorsal view) distinctly protruding forwards, convex anteriorly and without anterolateral corners, with shallow median longitudinal furrow; mesoscutum in dorsal view 1.0–1.1 times as long as maximum width. Notauli complete, rather deep anteriorly and shallow to very shallow posteriorly, rugulose. Prescutellar depression shallow, same length laterally and medially, evenly weakly curved, with 6–7 carinae, smooth between carinae, 0.2 times as long as scutellum. Scutellum weakly convex, with distinct lateral carinae, almost as long as maximum anterior width. Subalar depression rather wide, shallow, striate with reticulation. Precoxal sulcus rather distinct, more or less deep and wide but shallow and narrow in posterior quarter, reticulate-striate, running along anterior 0.8–1.0 of lower part of mesopleuron. Metanotum without dorsal tubercle (lateral view). Metapleural flange (lobe) wide basally and narrowed distally, short, subpointed distally. Propodeum weakly convex, evenly narrowed posteriorly without distinct lateral tubercles.

WINGS. Fore wing 3.5–3.8 times longer than wide. Pterostigma wide, 3.5–4.0 times longer than its maximum width. Radial vein (r) arising almost from middle of pterostigma. Radial (marginal) cell weakly shortened, metacarpus (1-R1) 1.10–1.15 times longer than pterostigma. Second radial abscissa (3-SR) 2.0–2.3 times longer than first abscissa (r) and forming with it obtuse angle, 0.35 times as long as the weakly sinuate third abscissa (SR1), 1.05–1.15 times as long as first radiomedial vein (2-SR). Second radiomedial (submarginal) cell weakly narrowed distally, its length about 2.0 times maximum width, 0.8–0.9 times length of rather wide brachial (subdiscal) cell. Second abscissa of medial vein (2- SR+M) short, 0.2–0.3 times as long as recurrent vein (m-cu). First abscissa of medial vein (1-SR+M) very weakly sinuate; third abscissa (2-M) weakly convex. Nervulus (cu-a) strongly postfurcal, distance between basal vein and nervulus 1.0–1.1 times nervulus length. Mediocubital vein (M+CU1) rather evenly and more or less distinctly curved to longitudinal anal vein (1-1A). Brachial (CU1b) vein strongly declivous, oblique to base of wing. Hind wing 4.5–4.6 times longer than its maximum width. First costal abscissa (C+SC+R) 0.9 times as long as second abscissa (1-SC+R). First abscissa of mediocubital vein (M+CU) 0.5–0.6 times as long as second and third abscissae (1-M) combined. Recurrent vein (m-cu) long, sclerotised, pigmented, distinctly antefurcal, straight, oblique towards base of wing.

LEGS. Hind femur elongate-oval, 2.5–2.7 times longer than wide. Hind tibia with two–three short spines on outer distal margin. Hind tarsus 1.0–1.1 times as long as hind tibia. Hind basitarsus not thickened, 0.7–0.8 times as long as remaining segments combined. Second segment of hind tarsus 0.45–0.50 times as long as basitarsus, 1.3 times longer than narrow fifth segment (without pretarsus).

METASOMA. Metasoma 1.0–1.2 times as long mesosoma and head combined. First tergite rather short, without distinct spiracular protuberances, distinctly and almost linearly widened from base to apex. Length of first tergite 0.9–1.1 times its maximum posterior width; posterior width about 2.0 times its minimum anterior width. Second suture fine and narrow, weakly curved medially, with weak sublateral bands. Second tergite with rather fine, subparallel, weakly curved sublateral narrow convex lines. Median length of second tergite 0.45 times anterior width of second tergite, 0.8 times length of third tergite. Ovipositor sheath 0.45–0.50 times as long as metasoma, 0.6–0.8 times as long as mesosoma, 0.3–0.4 times as long as fore wing.

SCULPTURE AND PUBESCENCE. Vertex entirely and densely curvedly striate, without additional sculpture between striae, sometimes (specimen from Saudi Arabia) striae medio-posteriorly distinctly curved and with small circular area medioanteriorly; frons densely transversely or sometimes undulately striate with fine or distinct reticulation or rugosity between striae; face entirely densely curvedly or undulately transversely striate, striae distinctly curved down medially; temple mainly obliquely striate, smooth in lower quarter and sometimes anteriorly near eye. Mesoscutum entirely densely, curvedly, undulately striate with rugulosity, lateral lobes medially densely granulate with fine reticulation or densely obliquely striate; scutellum entirely densely curvedly longitudinally striate with fine or distinct reticulation between striae. Mesopleuron longitudinally striate with reticulation in upper half; medially finely reticulate-coriaceous to smooth, finely and densely reticulate-coriaceous to almost smooth below precoxal sulcus. Propodeum without areas delineated by carinae, entirely densely striate-rugose with reticulation. Hind coxa mainly small and dense rugose-reticulate with punctation, dorsally with few transverse undulate striae; hind femur very densely reticulate-coriaceous. First metasomal tergite entirely densely longitudinally striate with dense reticulation between striae, without distinct dorsal carinae. Second tergite entirely and third in anterior two-thirds densely and distinctly striate with dense fine or distinct reticulation, posteriorly medially and laterally mainly densely reticulate-rugulose to coriaceous, usually without striation; third tergite smooth on remaining part. Fourth to sixth tergites densely and fine reticulate-coriaceous in anterior half or third, smooth on remaining part. Vertex laterally and posteriorly with rather dense or sparse short semi-erect pale setae, glabrous rather widely medially. Mesoscutum with short, dense and semi-erect pale setae arranged widely along notauli and in singly line laterally, glabrous on all lobes medially. Setae of hind tibia semi-erect or sometimes erect, rather short and sparse, their length on dorsal surface 0.6–0.9 times maximum width of tibia.

COLOUR. Body mainly brownish yellow to yellow or sometimes and partly light reddish brown, sometimes or always frons, vertex medially, mesoscutum mainly, scutellum, metanotum, propleura, mesopleura in lower half or third and almost all metapleura reddish brown to dark reddish brown; underside of metasoma brown to reddish brown. Antenna mainly dark brown to black, 8–15 basal segments brownish yellow to brown. Palpi pale yellow basally, sometimes brownish in apical half. Legs mainly yellowish brown, whitish yellow coxae (at least partly) and tarsi; hind tibia pale basally at short or long area. Ovipositor sheath mainly dark brown to black, brown anteriorly. Fore wing widely and faintly maculate. Pterostigma mainly dark brown, whitish yellow or white basally and apically.

Male

Unknown.

Distribution

Saudi Arabia, Yemen.

Figures

Fig. 7. Doryctes (Neodoryctes) arrujumi Belokobylskij sp. nov., holotype, ♀ (RMNH). A. Habitus, lateral view. B. Head, front view. C. Head, dorsal view. D. Head, lateral view. E. Apical segments of antenna. F. Basal segments of antenna. G. Fore tibia. H. Mesosoma, dorsal view. I. Mesosoma, lateral view. J. Hind coxa and femur. K. Hind tibia.

Fig. 8. Doryctes (Neodoryctes) arrujumi Belokobylskij sp. nov., holotype, ♀ (RMNH). A. Wings. B. Metasoma, dorsal view. C. Metasoma, lateral view.