Pristaulacus uenoi, Konishi & Matsumoto, 2019

Konishi, Kazuhiko & Matsumoto, Rikio, 2019, Two new species of the genus Pristaulacus (Hymenoptera, Evanioidea, Aulacidae) from Japan, Zootaxa 4551 (4), pp. 445-454 : 448-449

Pristaulacus uenoi sp. n.

( Figs 17–26)

Type material. Holotype: ♀, “ Issô-rindô , Yakushima Is., JAPAN, 15. vii. 1996, T. Ueno ”, ( NIAES) . Paratype: 1♀, Mt. Hoyoshi-dake , Kagoshima Pref., Kyushu, JAPAN, ex. 10. iv. 2004 from dead wood of Litsea acuminata (Teschner) Kosterm., K. Mori , ( OMNH) .

♀. Body length 10.2–12.5 mm (12.5 mm); fore wing length 7.8–9.1 mm (9.1 mm); ovipositor length 7.9–8.6 mm (8.6 mm).

Color ( Fig. 17). Head ( Figs 18–20 ) black with white setae; scape brownish red; basal 2/3 of mandible brown ( Fig. 19 ); setae on mandible yellow; palpi blackish brown. Mesosoma ( Figs 22 & 23 ) brownish red with white setae; ventral half of propleuron blackish; posterior 1/3 of mesoscutum blackish or not so (blackish); mesopleuron along posterior margin brownish or blackish (blackish); scutellum and metanotum blackish; metapleuron blackish brown or not so (blackish brown); propodeum entirely or except posterior face (entirely) blackish. Wings ( Figs 25 & 26 ) hyaline; stigma, veins of fore wing and R+Rs of hind wing blackish brown; M+Cu, r-m and Cu of hind wing unpigmented; 2-M of hind wing brown; basal 3/4 of basal cell, distal portion of subbasal cell, postero-basal corner of 1st discal cell, basal 1/4 of subdiscal cell, distal 2/5 of 1st submarginal cell, basal 1/8 of marginal cell, basal 1/6 of 2nd submarginal cell except along 2-M, and distal 1/3 of 2nd discal cell brown; distal 2/5 of marginal cell and distal 3/4 of 3rd submarginal cell pale brown. Fore and mid legs brown; fore tibia and tarsus brownish yellow; mid tibia and tarsus yellowish brown. Hind leg black; tarsus blackish brown. Metasoma black with white setae; 1st and 2nd tergites blackish brown; ovipositor brown. Setae on legs white except hind tibia brown.

Head ( Figs 18–20 ) densely punctate with setae; vertex polished with sparse and weak punctures with setae; in dorsal view, 1.3–1.4 (1.4)× as wide as long, with posterior margin weakly concave, temple roundly convergent posteriorly, temple 0.5× as long as eye; occipital carina complete; POL/OOL=0.8–0.9 (0.8). Antenna ( Fig. 21 ) with 1st flagellomere 3.0–3.2 (3.0)× as long as wide; 2nd flagellomere 6.0–6.2× as long as wide and 1.8–1.9 (1.9)× as long as the 1st. Outer face of mandible with small circular area with strong and dense punctures with relatively long setae at apical 1/3 of middle; area between the circular area and base of mandible covered with sparser punctures with setae.

Mesosoma ( Figs 22 & 23 ) reticulate rugose; propleuron densely punctate; mesoscutum and scutellum transversely carinate; axillula longitudinally carinate. Latero-ventral margin of pronotum with one tooth-like process. Anterior margin of mesoscutum in lateral view acute ( Fig. 23 ). Fore wing ( Fig. 25 ) 3.0–3.1 (3.1)× as long as wide; 1-Rs 1.6× as long as 1-M; 2-rs+m moderately long; 3r-m strongly reclivous; 2m-cu inclivous. Coxae polished with fine punctures; hind coxa with outer surface slightly trans-striate. Hind basitarsus 1.3× as long as remaining tarsomeres combined; tarsal claw with 3 tooth-like processes ( Fig. 24 ).

Metasoma with 1st and 2nd tergites sooth, punctulate and without setae; 3rd to apical tergites densely punctate with dense and short setae. Ovipositor 0.9–1.0 (0.9)× as long as fore wing ( Fig. 17).

♂. Unknown.

Distribution. Japan (Kyushu, Yakushima Island).

Biology. One specimen emerged from dead wood of Litsea acuminata (Teschner) Kosterm. (family Lauraceae ).

Etymology. This species is named in honor of Dr Takatoshi Ueno, who collected the holotype of this species.

Remarks. This species resembles P. ryukyuensis Konishi, 1990 in having the occipital carina not interrupted, anterior margin of the mesoscutum in lateral view acute, and veins M+Cu, r-m and Cu of hind wing not pigmented. However, P. uenoi can be easily distinguished from P. ryukyuensis by the brownish red coloration of mesosoma, fore wing with more than one dark spots, and hind tarsal claw with 3 tooth-like processes.

The distribution of 12 Japanese species of Pristaulacus is summarized in Table 1 and they can be identified by the following key.

Chen et al. (2016), Choi et al. (2013), Konishi (1989, 1990, 1991), Konishi & Kikuchi (2016), Lee & Turrisi (2008),

Smith & Tripotin (2011), Sundukov & Lelej (2015), Turrisi (2007, 2011), Turrisi & Konishi (2011), Turrisi & Smith

(2011), Turrisi & Watanabe (2011), Watanabe et al. (2013) and present study.

Figures

FIGURES 18–21. Pristaulacus uenoi sp. n., female (paratype): 18–20, head; 18, dorsal view, 19, frontal view; 20, lateral view; 21, antenna.

FIGURES 22–23. Pristaulacus uenoi sp. n., mesosoma of female (holotype): 22, dorsal view; 23, lateral view.

FIGURES 24–26. Pristaulacus uenoi sp. n., female (holotype): 24, hind tarsal claw; 25, fore wing; 26, hind wing.