Pristaulacus rufipes Enderlein 1912

Pristaulacus rufipes Enderlein, 1912 (Figure 4) Pristaulacus rufipes Enderlein, 1912: 266; Enderlein 1913: 319; Hedicke 1939: 15; Smith 2001: 295; Turrisi et al. 2009: 58; Chen et al. 2016: 114; Turrisi 2017: 936; Pham et al. 2024: 216. Type material. TAIWAN: holotype ♀, “ Hoozan, Formosa, H. Sauter, V.10/Holotypus [red label]/ Pristaulacus rufipes Enderl. ♀, Type, Dr. Enderlein det. 1912/Coll. DEI Eberswalde” (SDEI) (examined, see also Chen et al. 2016). Additional material examined. TAIWAN: 1♀, Hoozan, Formosa, V. 10, H. Sauter (SDEI); 1♂, Gaofong Ln., about 1400 m, Ren-ai T. Nantou, 7-9.V.2009, Takakuwa M. leg. (MZUF); 2♂, Qingtan, Xindian Dist., New Taipei City, 11.IV.2022, W.C. Yeh (TFRI); 1♂, ditto., 13.IV.2022, W.C. Yeh (TFRI). Diagnosis. Medium to large sized, body length: 14.7–15.2 mm (♀); 12.5–15.5 mm (♂); fore wing length: 11.7–12.9 mm (♀); 10.0– 12.3 mm (♂). Colour blackish-brown except: clypeus extensively dark brown; mandible extensively reddish-orange, with apex blackish; maxillo-labial complex brownish to dark brownish; antenna reddish-orange with A1 lighter; legs light reddish-orange, except coxae and hind trochanter darker; wings hyaline, fore wing with a wide brown spot below stigma (two third as wide as stigma) not extending beyond cells SM-1 and R; metasoma largely black, except S1, most part of T2 and apex of following tergites dark reddish; valvula 3 of ovipositor dark brown to blackish-brown; setae: whitish to goldish (Figs. 4A & C). Head, from above, 1.4 × wider than long, shiny; gena, from above, shortly rounded behind eye, moderately developed, 0.6–0.7 × as long as eye length; occipital margin straight (Fig. 4B); occipital carina narrow, rim-like, 0.2 × diameter of an ocellus; vertex with moderately coarse, deep and dense punctures (distance between punctures 2.0–2.5 × puncture diameter). Mesosoma elongate (Fig. 4D), 2.2 × longer than high, coarsely sculptured; pronotum areolate-punctate, lower third coarsely punctate to areolate-rugulose, with one weakly protruded, stout, obtuse anterior tooth-like process on each lateroventral margin; mesoscutum transverse-carinate, anterior margin, in lateral view, rounded, not overhanging pronotum; fore wing vein 2-rs+m short; hind coxa elongate, slender and subcylindrical, 3.0 × as long as broad, transverse-carinate dorsally rugose on sides and polished-punctate ventrally; hind basitarsus 13.4 × longer than broad and 1.9 × longer than tarsomeres 2–5; tarsal claws with four tooth-like processes along inner margin. Metasoma pyriform in lateral view, moderately compressed laterally; petiole elongate, slender, 4.4 × as long as broad; ovipositor length 1.8 × fore wing length. Distribution. Taiwan (Enderlein 1912, 1913; Chen et al. 2016). Remarks. For additional detail on description, see Enderlein (1912) and Chen et al. (2016). Biology. The species has been observed flying in April-May. The males collected were observed roosting nearby a rotten stump fallen by a trail which runs through the woods in Qingtan. They were flying around the stump every few minutes, maybe to searching for females. Host unknown.