Arhaconotus longicaudatus Oanh & Long & Hiep & Nghiep 2023, sp. nov.
Creators: name: Oanh, Nguyen Thi
name: Long, Khuat Dang
name: Hiep, Nguyen Duc
name: Nghiep, Hoang Thi
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Arhaconotus
Arhaconotus longicaudatus

description: Arhaconotus longicaudatus Long, sp. nov.
(Figures 5, 6A–K)
Material. Holotype, ♀, “Doryc. 645 ”, (IEBR), NW Vietnam: Hoa Binh, Yen Thuy, Lac Thinh, forest, MT, 20°23’06’’N 105°34’11’’E, 315 m, 25.iii.2002, KDLong.
Description. Female, body length 3.7 mm; fore wing length 3.5 mm; ovipositor sheath 3.2 mm; antenna 6.7 mm (Fig. 5).
Head. Antenna complete, with 36 flagellomeres; scapus length dorsally 1.6 × as long as its maximum width; first flagellomere as long as second flagellomere; in dorsal view, head width 1.6 × its median length); head roundly narrowed below eyes; occipital carina complete, evenly curved; median length of head 8.25 × as long as temple (Fig. 6A); height of eye 3.75 × temple; ocelli small, basal side of ocellar triangle as long as lateral sides; OOL: OD: POL = 5.0: 2.0: 2.5 (Fig. 6A); in frontal view, eye 2.4 × as high as broad; malar space height 0.4 × height of eye, and 1.4 × basal width of mandible; face width 1.2 × height of eye; and 1.4 × height of face and clypeus combined (Fig. 6B); hypoclypeal depression width as long as distance from edge of depression to eye; 0.45 × as wide as face, and 1.8 × as wide as basal width of mandible; distance between tentorial pits 1.1 × as long as long distance from pit to eye; in lateral view, maxillary palp 1.4 × head length; occipital carina joined below by a ridge with hypostomal carina upper base of mandible (Fig. 6C); transverse diameter of eye 2.0 × length of temple (Fig. 6C); frons almost flat, finely granulate; vertex and occiput finely granulate; temple shiny, mostly mat; face setose, granulate.
Mesosoma. Length mesosoma 1.95 × its height (Fig. 6E); prescutellar depression 0.3 × as long as scutellum, scutellum finely granulate (Fig. 6D); propodeum with marginate areola posteriorly, and median carina in basal 0.45 of propodeum (Fig. 6F); propleuron coriaceous; lateral side of pronotum with long setae posteriorly, finely granulate ventrally, sparsely crenulate medially; dorsally, median transverse carina of granulate pronotum deviding it into two equal parts; mesopleuron sparsely setose, granulate medially, smooth ventrally; precoxal sulcus rather long, narrow anteriorly, wider posteriorly, mostly smooth (Fig. 6E), metapleuron with long setae, granulate; notauli narrow, crenulate antero-medially, merging in to wide irregular rugose area posteriorly (Fig. 6D); scutellum densely granulate; propodeum with marginate areola posteriorly, and median carina in basal 0.5 of propodeum; basolateral areas of propodeum marginate, granulate; rugulose along basal carina; propodeal areola transversely rugulose (Fig. 6F).
Wings. Fore wing 3.5 × as long as its maximum width; pterostigma 3.2 × as long as wide; vein r arising from middle of pterostigma; vein 1-R1 1.4 × as long as pterostigma; vein 3-SR 3.2 × vein r, and 0.5 × vein SR1, and 1.5 × vein 2-SR; vein m-cu distinctly postfurcal; second submarginal cell of fore wing parallel-sided, basal length 2.8 × as long as its maximum width (Fig. 6I), and 1.2 × as long as first subdiscal cell; first subdiscal cell near rectangularly closed on level of vein m-cu; vein 1-CU1: cu-a: 2-CU1= 3: 2: 24 (Fig. 6I). Hind wing 5.9× as long as its maximum width; vein M+CU 0.6 × vein 1-M; vein 1-M 3.25 × vein 1r-m (Fig. 6K).
Legs. Fore tarsus 1.25 × as long as fore tibia; inner side of fore tibia with raw of 8 spines; hind coxa finely and densely granulate; hind femur, tibia and basitarsus 3.9, 10.0, and 8.3 × their maximum width, respectively; hind femur with short sparse semi-erected setae ventrally, length of seta 0.7 × as long as maximum width of femur; outer side of hind tibia with sparse semi-erected setae, length of seta 0.7 × as long as maximum width of hind tibia; inner tibial spur 0.2 × as long as hind basitarsu; hind tarsus 0.5 × as long as hind tibia; basitarsus 0.96 × as long as second-fifth tarsus combined; second tarsus 0.4 × as long as basitarsus, and 1.7 × as long as telotarsus (without pretarsus); fourth tarsus 0.7 × telotarsus.
Metasoma. Metasoma 1.1 × as long as head and mesosoma combined; first tergite gradually widened from base to apex; maximum width of first tergite 1.5 × its minimum width (Fig. 6G); length of first metasomal tergite 0.9 × apical width, and subequal to propodeum; length of second tergite 0.7 × as long as its basal width, and as long as length of third tergite (Fig. 6G); first metasomal tergite with baso-lateral carinae, largely striate; second suture deep and wide, sparsely crenulate, second tergite with smooth basal area separated with distinct crenulate furrow (Fig. 6G); third tergite with smooth basal area separated with distinct crenulate furrow; median length of basal smooth area as long as striate apical half of the tergite; fourth-fifth tergites punctulate basally, striate medio-apically, with smooth extreme apical area; sixth tergite with apical emargination, surface of sixth tergite with median transverse carina-like rugosity, densely punctulate on basal half, semi-circularly striate on apical half (Fig. 6H).
Colour. Head, antenna yellow; palpi pale yellow; all the legs pale yellow; wing veins yellow; pterostigma yellow, paler basally and apically; mesonotum, mesopleuron brownish-yellow; metapleuron, propodeum blackishbrown; first-second metasomal tergites dark-brown; third-six tergites largely yellowish brown basally, yellow apically; ovipositor sheath and ovipositor yellow (Fig. 5).
Male. Unknown.
Etymology. “longus” (Latin for “long”, and and “cauda”, Latin for “tail, appendage”), because of long ovipositor among all already known Arhaconotus species.
description: Published as part of Oanh, Nguyen Thi, Long, Khuat Dang, Hiep, Nguyen Duc & Nghiep, Hoang Thi, 2023, Review of the genus Arhaconortus Belokobylskij, 2000 (Hymenoptera: Braconidae: Doryctinae), with description of three new species from Vietnam, pp. 475-486 in Zootaxa 5380 (5) on pages 482-484, DOI: 10.11646/zootaxa.5380.5.4, http://zenodo.org/record/10254303