Anisocyrta cvanachterbergi Yao & Kula & Chen 2018, sp. n.

Anisocyrta cvanachterbergi Yao, sp. n.

Figs (1–10)

Diagnosis. Body mostly black; propodeum extensively rugose medially, basal half with small areola medially and a pair of large sculptured areola connected with basal areola apically, ridges of areola protruding strongly; precoxal sulcus absent; medial longitudinal carina of propodeum complete; T1 1.50 × its apical width.

Description. Holotype, ♂, length of body 3.20 mm; length of fore wing 3.40 mm.

Head. Antenna with 31 flagellomeres, F1 (including annulus) 1.40 × longer than F2 (Fig. 1), F1, F2, and penultimate flagellomere 6.70, 2.70, and 3.20 × longer than their widths, respectively. Maxillary palp as long as height of head. Labial palp short. Face twice wider than long, with long pubescence, slightly rugose, and with Vshaped carina medially (Fig. 3). Eye 0.90 × length of temple (in dorsal view), temple nearly parallel-sided behind eye (Fig. 5). Frons flat and smooth. Clypeus setiferous. Malar space without suture, 0.20 × length of basal width of mandible; mandible medial length 1.50 × longer than maximum width, with fourth tooth ventrally (Fig. 6).

Mesosoma. 1.70 × longer than high. Lateral side of pronotum largely crenulate (Fig. 7). Mesopleuron smooth, precoxal sulcus absent (Fig. 7). Metapleuron smooth dorsally. Episternal scrobe deep and narrow (Fig. 7). Mesoscutum smooth, glabrous except some setae near notauli and midpit; notauli present in anterior 2/3 of mesoscutum, deep and crenulate, not reaching midpit, midpit elliptical and deep, 1/4 length of mesoscutum (Fig. 5). Scutellar sulcus deep and wide, with four carinae (Fig. 5). Scutellum smooth, edge of scutellum with dense pubescence. Metanotum largely rugose, with complete and weakly protruding mid-longitudinal carina (Fig. 8). Propodeum extensively rugose medially, basal half of propodeum with small areola medially, connected with a pair of large sculptured areola apically, ridges of areola protruding strongly, mid-longitudinal carina of propodeum complete and strongly protruding, basal ridge slightly protruding (Fig. 8); propodeal spiracle small, round and submedially situated (Fig. 7).

Wings. Fore wing (Fig. 1): pterostigma almost same width only apical part slightly narrower to separate from R1; vein r rises nearly from base of pterostigma; vein 2RS nebulous; r: 3RSa: 3RSb = 3: 11: 18; 2RS: 3RSa: rm = 3: 11: 3; 1CU-1: 1CU-2 = 4: 11; vein 1m-cu slightly postfurcal and almost parallel to vein 1M; vein 2cu-a about as long as vein 2CUa.

Legs. Hind coxa smooth. Tarsal claws slender (Fig. 9). Length of femur, tibia, and basitarsus of hind leg 6.40 ×, 11.00 ×, and 10.00 × longer than wide, respectively. Length of hind tibial spurs 0.25 × and 0.35 × length of hind basitarsus. Inner side of apex of hind tibia depressed; inner apex of hind tibia frequently with sparse and yellowish or brownish setae (Fig. 10).

Metasoma. T1 1.50 × longer than apical width, posterior third rugose, rest of T1 smooth (Fig. 8). Lateral longitudinal carinae distinct in basal half, converging at anterior 2/5 of T1 and extending to apical edge of T1 (Fig. 8). Dorsope medium-sized, width of dorsope slightly longer than half width of basal T1 (Fig. 8). Spiracle protruding in the middle of T1.

Color. Head and mesonotum black. Palpi, annulus, propleuron, tegulae, and T1 dark brown. Metasoma (except first tergum), mandible, scape, pedicel, and legs brownish yellow. Pterostigma dark brown anteriorly, rest of pterostigma and veins brown. Wing membrane subhyaline.

Female. Unknown.

Material examined. Holotype, ♂, CHINA Tibet, 25-?-2012, Wangzhen Zhang (BIIC).

Comparative diagnosis. Anisocyrta cvanachterbergi was collected in Tibet and is black. It is close to A. alpinicola but differs from it by having shorter F1 and propodeum with areolae.

Remarks. Tibet is located in western China in an area where there are relatively few Alysiini collection records. Despite having only one male specimen, I still name it here as a new species based on characters different from other species along with the locality.

Host. Unknown.

Etymology. Named in honor of Dr Cornelis van Achterberg in recognition of his many contributions to Hymenopterology and the guidance he has provided to the first author.

Distribution. China (Tibet).