Pristaulacus rufipes Enderlein, 1912

Turrisi, Giuseppe Fabrizio, Yeh, Wen-Chi & Lu, Sheng-Shan, 2025, Taxonomic review of the Aulacidae of Taiwan (Hymenoptera: Evanioidea) with description of a new species, Zootaxa 5618 (4), pp. 584-594 : 591-592

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.

Figures

FIGURE 4. Pristaulacus rufipes Enderlein, 1912, ♂ (TFRI).A Habitus, lateral view. B Head, dorsal view. C Head, frontal view. D Mesosoma, dorsal view.