Phanerotomella fuscitibialis He, Achterberg, He, Tang & Chen, 2025, sp. nov.

Phanerotomella fuscitibialis sp. nov. urn:lsid:zoobank.org:act: F35A0FEF-EE12-437F-86C3-4CFAA6B0C507 Figs 37–38 Diagnosis Apex of metasoma truncate in dorsal view (Fig. 38J); mesopleuron reticulate and with distinctly smooth area posteriorly (Fig. 38I); head brown (Fig. 38A); metasoma blackish and at most first and second tergites medially with brownish patches (Fig. 38J); lamella of third metasomal tergite wide and with pair of blunt tubercles (Fig. 38L); face and temple rugulose (Fig. 38B–C). Etymology Named after the laterally darkened hind tibia; ‘ fuscus ’ is Latin for ‘brown’. Type material Holotype CHINA – Xizang • ♀; Linzhi, Yigong Tea Farm, Laosanlian; 5 Aug. 2019; yellow pan trap; ZJUH No. 202307980. Paratypes (15 ♀♀) CHINA – Xizang • 7 ♀♀; Linzhi, Yigong Tea Farm, Laosanlian; 5 Aug. 2019; yellow pan trap; ZJUH Nos 202307658, 202307704, 202307750, 202307796, 2023077842, 202307843, 202307888 • 2 ♀♀; Linzhi, Yigong Tea Farm, Laosanlian; 5Aug. 2019; Q. Wu leg.; ZJUH Nos 202307705, 202307751 • 1 ♀; Linzhi; Yigong Tea Farm, Laosanlian; 5 Aug. 2019; X.Z. Ma and Z.K. Li leg.; ZJUH No. 202307569 • 1 ♀; Linzhi, Yigong Tea Farm, Laosanlian; 5 Aug. 2019; Y. Li leg.; ZJUH No. 202307890 • 1 ♀; Linzhi, Yigong Tea Farm; 3 Aug. 2019; P. Tang leg.; ZJUH No. 202307889 • 1 ♀; S bank of Yigong Lake; 4 Aug. 2019; X.Z. Ma leg.; ZJUH No. 202307660 • 1 ♀; Linzhi, Yigong, Tongjia Village; 6 Aug. 2019; X.F. Li leg.; ZJUH No. 202307505 • 1 ♀; Linzhi, Bomi, Gang Village; 9 Aug. 2019; C.H. Wang leg.; ZJUH No. 202307611. Description Female MEASUREMENTS. Length of body 2.6 mm, fore wing 2.4 mm. COLOURATION. Black; head yellowish brown except vertex and frons dark brown; clypeus yellow; antenna brown except for scapus anteriorly yellowish; mandible yellowish and with reddish teeth; prothorax, mesopleuron and metapleuron brownish yellow; first and second metasomal tergites medially with brownish patches; metasoma ventrally white or ivory; fore and middle legs pale yellow except tibia and tarsus darkened to brownish yellow; hind leg brownish yellow except tibia and tarsus dark brown; wing veins and parastigma brown, pterostigma dark brown. HEAD (Fig. 38A–C). Width 1.3 × median length in anterior view (Fig. 38B) and part of head above eye in lateral view 0.5× height of eye (Fig. 38C); antenna with 34 segments and 1.3× as long as fore wing, slightly widened and shortened medially, gradually narrowing apically, 20 th –22 nd subapical segments moniliform and suddenly wider than long followed by longer segments up to apex, third, fourth, tenth, fifteenth and penultimate segments 3.2, 3.0, 1.5, 1.3 and 2.0× as long as wide in lateral view, respectively (Fig. 38D–E); area of stemmaticum transversely striate; OOL: OD:POL= 31:7: 10; length of eye 1.3× temple in dorsal view (Fig. 38A); frons transversely finely rugulose and with median carina; vertex finely rugulose with short setae; temple rugulose; face rugulose and with distinct median ridge, dorsally connected to median carina; clypeus smooth and shiny except for finely punctation, truncate medio-ventrally; eye width in lateral view 1.4 × maximum width of temple (Fig. 38C), eye height in anterior view 0.8× minimum width of face (Fig. 38B); malar space rugulose and 1.7 × as long as basal width of mandible; mandible somewhat slender, lower tooth of mandible 0.5× as long as apical tooth (Fig. 38F); face width 1.1 × height of face and clypeus together. MESOSOMA (Fig. 38H–I). Length 1.5× its width in lateral view (Fig. 38I); side of pronotum superficially rugulose-punctate; mesoscutum regularly and densely reticulate; notauli absent; scutellar sulcus with five crenulae (Fig. 38H); scutellum superficially reticulate; mesopleuron densely reticulate and with distinctly smooth and shiny area posteriorly, precoxal sulcus absent; propodeum reticulate, without median carina, with irregular transverse carina connected to four weak and blunt tubercles laterally. WINGS (Fig. 38G). Fore wing 3.0× as long as its maximum width; second submarginal cell sessile; vein m-cu interstitial; veins r, SR1 and 1-SR+M straight; length of 1-R1 1.4 × pterostigma; vein r issued far beyond middle of pterostigma, 1.1× vein r-m; r: 2-SR: SR1 =17: 39: 80; vein 1-CU1 0.5× as long as vein 2-CU1. Hind wing: M+CU:1-M:1r-m =23: 38:16. LEGS (Fig. 38K). Hind femur 3.8 × as long as wide; longest spur of hind tibia 0.5× as long as its basitarsus; hind leg smooth and shiny except fine and superficial punctation; middle tibia without ivory blister. METASOMA (Fig. 38J, L). Elliptical in dorsal view (Fig. 38J), carapace 1.9 × as long as wide and 1.1× as long as mesosoma; first to third tergites densely and coarsely reticulate-rugose; third tergite 0.8× as long as second tergite, medial length of third tergite 0.5× its maximum width; lamella of third tergite wide and not protruding medio-apically and with pair of blunt tubercles latero-apically (Fig. 38L). VARIATION. Second submarginal cell sessile or weakly petiolate, rarely vein 3-SR weakly developed; length of fore wing of female 2.4–2.6 mm; head, mesoscutum medio-anteriorly, mesopleuron, metapleuron, hind femur, first and second metasomal tergites medially and lamella of third metasomal tergite more or less darkened brown. Male Unknown. Host Unknown. Distribution China (Xizang). Remarks Phanerotomella fuscitibialis sp. nov. is similar to P. apetila Chen & Ji, 2003 because the apex of the metasoma is truncate in dorsal view, the temple in dorsal view narrowing behind the eye, the antenna with three subapical segments suddenly wider than long while other segments are longer than wide, and the second submarginal cell triangular. However, P. fuscitibialis can be distinguished from P. apetila by having the metasoma symmetrical and widest at the middle (metasoma narrowing to apex and widest in basal half in the latter), vein m-cu antefurcal (postfurcal in the latter), the antenna widened medially (slender in the latter), the temple rugulose and matt (smooth and shiny in the latter), and the mesopleuron reticulate (punctate in the latter).