Anisocyrta rugosa, Zhu & Achterberg & Chen, 2025

Anisocyrta rugosa sp. nov.

Figs 3–4 View FIGURE 3 View FIGURE 4

Type material. Holotype, 1 ♀ ( ZJUH), “ [N. China:], Hebei, Mt. Xiaowutai , 22.viii.2005, Shi Min, No. 200608144” . Paratype, 1♀ + 1♂ ( ZJUH), id., but Zhang Hongying, No. 200608636 and 200608642 .

Diagnosis. Body black; first flagellomere twice as long as second flagellomere ( Fig. 4G View FIGURE 4 ); length of eye in dorsal view 0.9 × temple ( Fig. 4I View FIGURE 4 ); mandible with four teeth ( Fig. 4L View FIGURE 4 ); ventral side of pronotum largely crenulate, remainder smooth; metapleuron largely coarsely reticulate-rugose ( Fig. 4E View FIGURE 4 ); notauli present at basal 2/3 of mesoscutum, but shallow posteriorly; metanotum largely coarsely reticulate-rugose, with complete medio-longitudinal carina and weakly protruding; surface of propodeum largely coarsely reticulate-rugose ( Figs 4C–E View FIGURE 4 ); vein m-cu of fore wing distinct postfurcal ( Fig. 4A View FIGURE 4 ); length of first tergite 1.3 × its apical width, surface with striation, its dorsal carinae converging and distinct in basal half; length of setose part of ovipositor sheath 2.5 mm, 0.63 × as long as fore wing, and 1.9 × hind tibia ( Fig. 4F View FIGURE 4 ).

Description. Holotype, ♀, length of body 4.0 mm, of fore wing 4.1 mm.

Head. Antenna with 33 antennomeres, length of first flagellomere twice second flagellomere, length of first, second and penultimate flagellomere 6.3, 3.0, and 2.0 × their width, respectively ( Figs 4G–H View FIGURE 4 ); segments of labial palp rather slender; length of maxillary palp 1.1 × height of head ( Fig. 3A View FIGURE 3 ); face with some punctures ( Fig. 4J View FIGURE 4 ); length of eye in dorsal view 0.9 × temple; POL: diameter of ocellus: OOL= 7: 5: 20; frons flat and smooth ( Fig. 4I View FIGURE 4 ); malar space without suture, and its length 0.1 × basal width of mandible ( Fig. 3B View FIGURE 3 ); mandible with small fourth tooth ventrally and with incision between second and third tooth, and 1.5 × longer than its maximum width ( Figs 4K–L View FIGURE 4 ).

Mesosoma. Length of mesosoma 1.6 × its height ( Fig. 4D View FIGURE 4 ); pronope shallow ( Fig. 4I View FIGURE 4 ); ventral side of pronotum largely crenulate, remainder smooth; mesopleuron smooth; episternal scrobe deep and narrow; metapleural flange minute and acute apically; metapleuron largely coarsely reticulate-rugose ( Fig. 4I View FIGURE 4 ); notauli present at basal 2/3 of mesoscutum, but shallow posteriorly; mesoscutum smooth and glabrous, but with some setae near imaginary notaulic courses; medio-posterior depression deep, narrow; scutellar sulcus deep, smooth and rather wide, with four carinae; scutellum smooth; metanotum largely coarsely reticulate-rugose, with complete medio-longitudinal carina and weakly protruding; surface of propodeum largely coarsely reticulate-rugose, upper 1/3 of propodeum with dense transverse carina, mid-longitudinal carina only present at posteriorly 2/3 of propodeum ( Figs 4C, 4E View FIGURE 4 ).

Wing. Fore wing: r issued near base of pterostigma; r:3-SR:SR1 = 2:6:13; 2-SR:3-SR:r-m = 5:15:6; 1-CU1:2- CU1 = 1:5; m-cu distinct postfurcal and parallel to 1-M; CU1b about as long as 3-CU1 ( Figs 4A–B View FIGURE 4 ).

Legs. Hind coxa smooth; tarsal claws rather slender; length of femur, tibia and basitarsus of hind leg 4.4, 10.0 and 6.7 × their width, respectively; length of hind tibial spurs 0.25–0.30 × hind basitarsus; hind tibia and tarsus normally setose ( Fig. 4M View FIGURE 4 ).

Metasoma. Length of first tergite 1.3 × its apical width, distinctly widened posteriorly ( Fig. 4E View FIGURE 4 ), surface striate, its dorsal carinae converging and distinct in basal half of tergite; dorsope medium-sized, rather deep ( Fig. 4E View FIGURE 4 ); length of setose part of ovipositor sheath 2.5 mm, 0.63 × as long as fore wing, and 1.9 × hind tibia ( Fig. 4F View FIGURE 4 ).

Colour. Black or blackish; palpi, legs and tegulae yellowish; annellus, mandible and basitarsus brownish yellow; pterostigma, veins and metasoma (except first tergite) brown; wing membrane subhyaline ( Fig. 3A View FIGURE 3 ).

Variation. Body length of ♀ 3.8–4.0 mm (2), ♂ 3.5 mm (1); length of fore wing of ♀ 3.9–4.1 mm (2), of ♂ 3.6 mm (1).

Comparative diagnosis. The new species runs in the key to Palaearctic species by Belokobylskij (1997) to A. perdita (Haliday) . The new species differs mainly by having the surface of the propodeum largely coarsely reticulate-rugose (versus smooth in A. perdita ), and the metapleuron largely coarsely reticulate-rugose (versus smooth in A. perdita ). In the Central European A. alpinicola van Achterberg, 1986 , the propodeum is extensively rugose medially, but differs by having the ventral half of the pronotal sides largely sculptured and inner side of apex of hind tibia densely and whitish setose.

Etymology. Named “ rugosa ” because of the largely coarsely reticulate-rugose propodeum: “ rugosus ” is Latin for “rugose”.