Phanerotoma nigritarsis, Luo & Achterberg & He & Tang & Chen, 2025

Luo, Wen-Juan, Achterberg, Cornelis Van, He, Jun-Hua, Tang, Pu & Chen, Xue-Xin, 2025, Revision of the genus Phanerotoma Wesmael (Hymenoptera, Braconidae, Cheloninae) from China, with descriptions of twenty-four new species, European Journal of Taxonomy 1003, pp. 1-110 : 56-59

Phanerotoma nigritarsis sp. nov.

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Fig. 22

Diagnosis

Vein 2-SR of fore wing straight ( Fig. 22F ); second submarginal cell of fore wing comparatively slender ( Fig. 22F ); mesopleuron partly smooth and distinctly shiny; hypopygium with short spine-like protuberance ( Fig. 22I ); clypeus with two large teeth ( Fig. 22D ); hind tibia with dark brown patch subbasally and apically ( Fig. 22J ); vein r almost as long as vein 3-SR; eye 1.2× as wide as temple in lateral view ( Fig. 22C ); antenna ( Fig. 22E ) and all tarsi mostly blackish ( Fig. 22J ).

Etymology

Named after the dark tarsi, from the Latin ‘ niger ’ for ‘black’ and the Greek ‘ tarsos ’ for ‘flat part of foot’.

Type material

Holotype CHINA – Xizang Zizhiqu • ♀; Linzhi, Bomigang Village ; 9 Aug. 2019; Pu Tang leg.; ZJUH No. 202300020 .

Paratypes ( 5 ♀♀)

CHINA – Xizang Zizhiqu • 1 ♀; Linzhi, Bomigang village ; 8 Aug. 2019; Yuanyuan Han leg.; ZJUH No. 202300011 • 1 ♀; Linzhi, Yigong, Baihequ ; 4 Aug. 2019; Pu Tang leg.; ZJUH No. 202300019 • 2 ♀♀; Linzhi, Yigong , tea plantation; 3 Aug. 2019; Pu Tang leg.; ZJUH Nos 202300031 , 202300032 . – Shaanxi • 1 ♀; along road from Huangbaiyuan to Taibei ; 33°49′ N, 107°39′ E; elev. 1321 m; 17 Jul. 2015; Jiangli Tan and Qingqing Tan leg.; ZJUH .

Description

Female

MEASUREMENTS. Length of body 3.8 mm, of fore wing 3.6 mm.

COLOURATION. Black; mandible (except teeth) yellow; teeth of mandible brown; coxae, trochanters, femora (except middle and hind femur apically), middle tibia basally and hind tibia basally and medially, veins M+CU, 1-M, 3-M, and CU1a of fore wing, and metasomal carapace pale-yellow.

HEAD. Width 1.3× median length in anterior view ( Fig. 22D ) and part of head above eye in lateral view 0.2× height of eye ( Fig. 22C ); antenna with 23 segments, five subapical antennal segments moniliform ( Fig. 22E ); area of stemmaticum mainly granulate; OOL:diameter of posterior ocellus:POL= 27:6: 6; eye as long as temple in dorsal view ( Fig. 22B ); frons with longitudinal rugae medially, rugose laterally and with weak median ridge; vertex granulate-rugose and with satin sheen; temple largely striate and with satin sheen; face granulate-rugose laterally, transversely rugose medially and without median ridge; clypeus smooth, shiny and 0.8× minimum width of face, intertentorial distance 1.9× minimum width between clypeus and eye, long erect setose and with 2 minute teeth medio-ventrally ( Fig. 22D ); temple in lateral view 1.1× as wide as temple ( Fig. 22C ), in anterior view, height of eye 0.7 × minimum width of face; upper condyle of mandible far below lower level of eyes ( Fig. 22D ); malar space 0.9× as long as basal width of mandible; lower tooth of mandible 0.3× as long as apical tooth, small and short ( Fig. 22K ).

MESOSOMA ( Fig. 22G ). Length 1.6× its width in lateral view; side of pronotum mainly rugose, but dorsally nearly smooth; mesoscutum densely rugose and rather shiny, densely setose; notauli hardly indicated; scutellar sulcus wide ( Fig. 22G ); scutellum triangular, flat, distinctly granulate-rugose and rather shiny; metanotum with short median carina anteriorly and small tooth protruding posteriorly; propodeum coarsely reticulate-rugose, latero-posteriorly distinct tuberculate, no transverse or median carinae.

WINGS. Fore wing 2.7 × as long as its maximum width; length of 1-R1 1.3× as long as pterostigma; r of fore wing 0.6 × 3-SR; distance between 1-R1 and wing apex 0.6× 1-R1; 2-SR and SR1 nearly straight ( Fig. 22F ); 2-SR+M present; pterostigma large, parastigma small; 1-CU1 0.6× as long as vein 2-CU1, cu-a slightly inclined and 0.5 ×as long as 1-CU1; r: 3-SR:SR1 =10: 16:99; 2-SR: 3-SR: r-m=37: 16: 11; 2-M straight posteriorly, bent anteriorly ( Fig. 22F ).

LEGS ( Fig. 22J ). Hind femur elongate and with satin sheen, 3.7× as long as wide and rather widened submedially; hind tibia rather swollen and with dark brown patch; middle tibia with rather large pale-yellow blister; hind coxa smooth and shiny.

METASOMA ( Fig. 22H–I ). Carapace elliptical in dorsal view, 1.7× as long as wide and as long as mesosoma; first and second tergites coarsely and densely longitudinally rugose; second suture narrow; third tergite 1.5× as long as second tergite and laterally weakly curved, in lateral view slightly convex posteriorly, in dorsal view densely and semi-circularly rugose and truncate ( Fig. 22H ), lateral lamella wide, with protruding corners latero-apically, medio-apically emarginate; ovipositor sheath narrow ( Fig. 22I ), with some long and erect setae; hypopygium apically acute and with up-curved medium-sized triangular protuberance ( Fig. 22I ).

VARIATION. Eye 0.9–1.1 × as long as temple; third tergite in dorsal view concave or convex medio-posteriorly, 1.3–1.5 × as long as second tergite; hind femur 3.7–4.2 × as long as wide.

Male

Unknown.

Host

Unknown.

Distribution

China ( Xizang Zizhiqu, Shaanxi).

Figures

Fig. 22. Phanerotoma nigritarsis sp. nov., holotype, ♀ (ZJUH No. 202300020). A. Habitus, lateral view. B. Head, dorsal view. C. Head, lateral view. D. Head, anterior view. E. Antenna, lateral view. F. Fore wing. G. Mesosoma, dorsal view. H. First third of metasomal tergites, dorsal view. I. Metasoma, lateral view. J. Hind leg. K. Mandible, ventral view. Scale bars: A–J=1 mm; K= 0.2 mm.