Phanerotoma truncata, 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 : 87-91

Phanerotoma truncata sp. nov.

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Fig. 36

Diagnosis

Seven subapical segments of female antenna moniliform ( Fig. 36A, E ); head comparatively emarginate posteriorly in dorsal view; face without median ridge ( Fig. 36D ); vein 3-SR of fore wing infuscate

( Fig. 36F ); posterior lamella of third metasomal tergite narrow medially ( Fig. 36I ); head behind stemmaticum convex; eyes moderately protruding in dorsal view ( Fig. 36B ).

Etymology

Named after the broadly truncate third tergite, from the Latin ‘ truncus ’ for ‘cut off’.

Type material

Holotype

CHINA – Taiwan • ♀; Duonalindao; 3 Jun. 2011; Pu Tang leg.; ZJUH No. 201105501.

Paratype

CHINA – Taiwan • 1 ♀; Shouka; 30 May 2011; Pu Tang leg.; ZJUH No. 201105418 .

Description

Female

MEASUREMENTS. Length of body 3.4 mm, of fore wing 2.7 mm.

COLOURATION. Yellow; stemmaticum and side of scutellum dark brown; teeth of mandible brown; pterostigma, parastigma, and veins r and 3-SR of fore wing infuscate; apical half of hind tibia with yellowish brown patch laterally.

HEAD. Width 1.4× median length in anterior view ( Fig. 36D ) and part of head above eye in lateral view 0.3× height of eye ( Fig. 36C ); antenna with 23 segments, almost as long as fore wing, seven subapical antennal segments moniliform ( Fig. 36E ); area of stemmaticum mainly granulate; OOL: diameter of posterior ocellus: POL=20: 7:5; eye 1.7× temple in dorsal view ( Fig. 36B ); frons with longitudinal rugae medially, rugose laterally and with median ridge; vertex granulate-rugose and with satin sheen; temple largely striate and with satin sheen; face with oblique rugae and with short median ridge; clypeus smooth, shiny and 0.8× minimum width of face, intertentorial distance 1.9× minimum width between clypeus and eye, clypeus long erect setose and with 3 minute teeth medio-ventrally ( Fig. 36D ); eye large and in lateral view 1.7× as wide as temple ( Fig. 36C ), in anterior view its height 0.5 × minimum width of face; upper condyle of mandible close to lower level of eyes ( Fig. 36D ); malar space 0.8× as long as basal width of mandible; lower tooth of mandible 0.7× length of apical tooth, robust and large ( Fig. 36K ).

MESOSOMA ( Fig. 36G ). Length 1.8× 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. 36G ); scutellum triangular, flat, distinctly punctate-rugose and rather shiny; metanotum with short median carina anteriorly and small tooth protruding posteriorly; propodeum coarsely reticulate-rugose, no lateral tubercles or transverse and median carinae.

WINGS. Fore wing 3.0× as long as its maximum width; length of 1-R1 1.5× as long as pterostigma; r 0.8× 3-SR; distance between 1-R1 and wing apex 0.3 × 1-R1; 2-SR nearly straight ( Fig. 36F ); SR1 slightly bent; 2-SR+M present; pterostigma large, parastigma medium-sized; 1-CU1 0.6× as long as vein 2-CU1, cu-a oblique and 0.6× as long as 1-CU1; r: 3-SR: SR1 =11: 15: 71; 2-SR: 3-SR: r-m=28: 15: 11; 2-M bent ( Fig. 36F ).

LEGS ( Fig. 36J ). Hind femur moderately slender and with satin sheen, 3.7× as long as wide and rather widened submedially; hind tibia swollen; middle tibia with medium-sized ivory blister; hind coxa smooth and shiny.

METASOMA ( Fig. 36H–I ). Carapace elliptical in dorsal view, 2.0× as long as wide and 1.1 × as long as mesosoma; first and second tergites coarsely and densely longitudinally rugose; second suture narrow; third tergite 1.3× 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. 36H ), lamella wide and medio-apically weakly emarginate; ovipositor sheath short and slender ( Fig. 36I ), with some long and erect setae; hypopygium apically acute, without triangular protuberance ( Fig. 36I ).

Male

Unknown.

Host

Unknown.

Distribution

China (Taiwan).

Figures

Fig. 36. Phanerotoma truncata sp. nov., holotype, ♀ (ZJUH No. 201105501). 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.