Kerevata longi Ranjith & Quicke & Belokobylskij & Priyadarsanan 2022, sp. nov.
Creators: name: Ranjith, A. P.
name: Quicke, Donald L. J.
name: Belokobylskij, Sergey A.
name: Priyadarsanan, Dharma Rajan
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Kerevata
Kerevata longi

description: Kerevata longi Belokobylskij, sp. nov.
(Figs 5–6)
Material examined. Holotype: female, VIETNAM: Hoa Binh Province, Yen Thuy District, Da Phuc, 20º18ʹ N 105º35ʹ, 100 m a.s.l., 3– 4.05.2002, coll. S. Belokobylskij. (ZISP). Paratype: 1 female, same label as in holotype (ZISP).
Description. Holotype female. Length of body 8.4 mm, fore wing 7.1 mm, ovipositor sheath 2.7 mm.
Head. Antenna with more than 40 flagellomeres (apical segments missing). First flagellomere 1.3 × longer than 2 nd and 3 rd (Fig. 6A). Width of head: minimum width of face: height of eye = 2.75: 1: 1.55. Shortest distance between posterior ocelli: transverse diameter of posterior ocellus: shortest distance between posterior ocellus and eye = 1: 2.6: 2.4. Face 1.3 × as wide as long medially, smooth, setose (Fig. 5B), slightly convex in lateral view (Fig. 5D). Clypeus smooth with sparse setosity upper and laterally (Fig. 5B). Inner margin of eyes emarginated (Fig. 5B). Transverse diameter of eye 2.6 × as long as temple in dorsal view (Fig. 5C). Frons with shallow medial longitudinal groove (Fig. 5C). Vertex and temple shiny, smooth and with rather dense setose punctation, densely setose (Fig. 5C). Occipital carina present, wide (Figs 5C, D).
Mesosoma. Mesosoma 2.1 × longer than high. Mesoscutum weakly and sparsely punctate, smooth between punctures, entirely setose, coarse rugose in medio-posterior one-third, carinate marginally, with sparsely and weakly crenulated narrow grooves laterally (Fig. 5F). Notauli complete, joined posteriorly, densely and coarsely crenulate (Fig. 5F). Scutellar sulcus with midlongitudinal carina and two short and curved lateral carinae (Fig. 5F). Scutellum smooth with sparse fine punctation, sparsely setose, with distinct lateral carina (Fig. 5F). Mesopleuron smooth upper posteriorly and densely finely punctate below, its anterior part irregularly rugose and sparsely setose, with widely crenulated wide and weakly sinuate precoxal sulcus (Fig. 5E). Epicnemial carina present (Fig. 5E). Metapleuron almost entirely rugose-areolate (Figs 5E, 6B). Propodeum with rather long longitudinal basal carina in anterior half, mainly coarsely rugose, only anteriorly almost smooth (Figs 5F, 6E).
Wings. Fore wing (Figs 6C, D). Lengths of fore wing veins r-rs: 3RSa: 3RSb = 1: 2.4: 3.3. Lengths of vein 2RS: 3RSa: rs-m = 1.55: 2.80: 1. Length of 1CUb 5.8 × 1CUa. Hind wing vein M+CU 1.6 × 1Ma+1Mb (Fig. 6C).
Legs. Lengths of fore femur: fore tibia: fore tarsus = 1: 1.3: 1.1. Lengths of hind femur: hind tibia: hind tarsus = 1: 1.5: 1.6. Hind femur 6.6 × longer than maximum width. Claws without basal lobe.
Metasoma. Length of first tergite 2.2 × longer than its apical width. Second tergite 1.4 × as long as third tergite. Second and third tergites 1.6 and 1.0 × as long as its apical width respectively. First tergite densely longitudinally striate with sparse rugulosity between striae, with midlongitudinal carina, sparsely setose (Fig. 6E). Second tergite densely longitudinally striate and dense rugulosity between striae, densely setose (Fig. 6F). Third tergite entirely densely longitudinally striate and dense rugulosity between striae, densely setose (Fig. 6F). Remaining tergites weakly sclerotised. Ovipositor sheath rather densely setose, with mainly long setae. Ovipositor sheath 1.4 × length of hind femur (Fig. 5A).
Colour. Head mainly pale yellow, with black or brown labrum, narrow medial longitudinal stripe on face, frons and vertex, stemmaticum and narrow stripes along lateral occipital carina. Antenna pale yellow with black scape, pedicel and basal half of first flagellomere. Palps whitish-yellow. Mesosoma mainly black, pronotum yellow in posterior two-thirds, with small elongate yellow spots along inner margins of notauli in anterior third, in upper posterior part of mesopleuron and in anterior upper part of metapleuron. Metasoma black dorsally and brownishyellow ventrally. Legs mainly pale yellow, tarsi yellowish brown; hind femur mainly black. Wings faintly infuscate, distinctly darkened along veins in narrow areas, distinctly narrowly infuscate basally and apically, vein C+SC+R dark brown, but yellow in subapical half.
Variation. Length of body 10.0 mm, fore wing 8.1 mm, ovipositor sheath 2.8 mm. Transverse diameter of eye 3.0 × as long as temple in dorsal view. Mesosoma 2.2 × longer than high. Scutellar sulcus with several distinct curved lateral carinae. Propodeum with rather long longitudinal basal carina in anterior third. Lengths of fore wing veins r-rs: 3RSa: 3RSb = 1: 2.2: 3.5. Lengths of vein 2RS: 3RSa: rs-m = 1.5: 2.6: 1.0. length of 1CUb 6.8 × 1CUa. Hind wing vein M+CU 1.7 × 1Ma+1Mb. Hind femur 6.9 × longer than maximum width. Length of first metasomal tergite 2.3 × longer than its apical width. Second tergite 1.5 × as long as third tergite. Second and third tergites 1.5 and 1.0 × and as long as its apical width respectively. First tergite with coarse and complete midlongitudinal carina. Ovipositor sheath 1.3 × length of hind femur.
Male. Unknown.
Distribution. Hoa Binh Province, Vietnam.
Host. Unknown.
Etymology. This species is named in honour of our colleague, the expert of Vietnamese Braconidae, Dr Khuat Dang Long.
Comparative diagnosis. This species in very similar to Indian species K. kethai sp. nov., but differs from it in having in fore wing the vein 1 cu-a only weakly postfurcal (strongly postfurcal in K. kethai), posterior curved part of M+CU1 short, sclerotised spot on subbasal cell situated much closely to 1 cu-a (long and sclerotised spot situated far from cu-a in K. kethai), in hind wing vein 2-SC+R longitudinal or subsquare (transverse in K. kethai), bump on the dorsal margin of neck long, as long as rest part of neck in dorsal view (distinctly shorter in K. kethai), propleuron entirely black (mainly brownish yellow except its anterior margin in K. kethai), hind wing vein M+CU 1.6 × 1Ma+1Mb (hind wing vein M+CU 2.0 × 1Ma+1Mb in K. kethai).
description: Published as part of Ranjith, A. P., Quicke, Donald L. J., Belokobylskij, Sergey A. & Priyadarsanan, Dharma Rajan, 2022, Kerevata Belokobylskij (Hymenoptera: Braconidae: Rogadinae) is no longer a Papua New Guinean endemic with descriptions of three new species from the Indomalayan Region, pp. 341-356 in Zootaxa 5091 (2) on pages 348-353, DOI: 10.11646/zootaxa.5091.2.6, http://zenodo.org/record/5843735