Pristaulacus anijimensis Watanabe, Konishi & Turrisi, 2013, sp. nov.
Creators: name: Watanabe, Kyohei
name: Konishi, Kazuhiko
name: Turrisi, Giuseppe Fabrizio
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Aulacidae
Pristaulacus
Pristaulacus anijimensis

description: Pristaulacus anijimensis sp. nov.
(Figs. 1–21)
[Japanese name: Anijima-sedaka-yasebachi]
Description. holotype female. Body length: 14.5 mm; antenna length: 9.0 mm; fore wing length: 11.5 mm; ovipositor length: 20.0 mm.
Colour (Figs. 1, 3, 4). Body mainly black; wings hyaline, slightly tinged with brownish-yellow; veins and stigma black with blue metallic hue; fore wing with a subquadrate dark brown spot below stigma; apical parts of fore and mid femora brownish-yellow; fore and mid tibiae including spurs brownish-yellow; fore tarsus brownish yellow basally. Setae: whitish, partly gold on mandible.
Head 1.2 times as long as wide, weakly shiny to dull, polished punctured; frons with coarse, deep and dense punctures (distance between punctures 0.3–1.8 times puncture diameter); malar area rugulose-punctate; vertex, temple and occiput with fine to coarse, superficial and sparse to rather dense punctures (distance between punctures 1.0–3.0 times puncture diameter);occipital margin weakly concave (Fig. 6); occipital carina narrow, 0.2–0.3 times as long as diameter of lateral ocellus (Fig. 6) temple moderately developed, rounded, 0.5 times as long as width of eye in dorsal view (Figs. 5, 6); POL 1.3 times as long as OOL; minimum length of malar area 1.0 times as long as A1 length; mandible punctate basally, with four apical teeth, two basal teeth obtuse (Fig. 5); antenna 0.8 times as long as length of fore wing; A3 3.4 times as long as wide; A4 4.8 times as long as maximum depth, and 1.4 times as long as length of A3 (Fig. 9); A5 5.2 times as long as wide, and 1.5 times as long as A3 (Fig. 9). Setae semi-erect to erect, short to long and dense; length of setae on temple 0.7–0.8 times as long as diameter of lateral ocellus.
Mesosoma coarsely sculptured; pronotum areolate-rugose, without tooth-like process on lateroventral margin, above side of propleuron (Fig. 10); propleuron polished and shiny with coarse, deep and dense punctures, with smooth area on posterior part of ventral surface; mesoscutum mostly transverse-carinate, areolate-rugose along transscutal fissure, anterior margin concave medially in dorsal view, and weakly prominent and angulate in lateral view (Fig. 1); notauli deep; scutellum mostly weakly transverse-carinate, polished in middle; mesopleuron convex, areolate-rugose except on upper part; mesosternum polished with fine and sparse punctures; metanotum polished, with minute punctures; metapleuron areolate-rugose; anterior margin of propodeum longitudinally carinate; posterior surface of propodeum without tooth-like process; remaining part of mesosoma areolate-rugose, transverse-carinate; fore wing (Fig. 3) with vein 2 SR+M 0.5 times as long as vein m-cu- 1, with SC+R longer than 1- SR and vein r as long as maximum width of stigma or slightly shorter; hind wing (Fig. 4) with vein M+CU pigmented beyond junction of veins 1 r-m and 2- M; fore coxa polished-punctate, slightly transverse-carinulate on base; mid coxa polished-punctate, transverse-carinulate on outer part; hind coxa polished-punctate, largely transverse-carinulate dorsally (Fig. 11); ventral part of hind coxa roundly convex posteriorly in lateral view (Fig. 12) and inner margin roundly notched near convexity (Fig. 13); anterior spur of mid and hind tibiae slightly shorter than posterior spur; hind basitarsus 16.6 times longer than wide and 1.3 times as long as tarsomeres 2–5 (Fig. 14); tarsal claw pectinate, with four tooth-like processes (basal one small and more or less indistinct) (Fig. 15). Setae erect, short and dense on dorsal surface, slightly longer and denser on propodeum, semi-erect to erect, short and dense on lateral and ventral parts of mesosoma, erect, long and dense on hind surface of propodeum and propleuron.
Metasoma pyriform in lateral view (Fig. 1), slightly compressed laterally; petiole (metasomal segments 1-2) elongate and slender, 2.7 times as long as maximum width; T1 and T2 mostly polished, shiny and smooth, except for median part of T2 with fine, superficial and sparse punctures; T3-T7 polished-punctate, with very fine, superficial and dense punctures, except for lateral part of each tergite; ovipositor 1.7 times as long as length of fore wing, and 4.4 times as long as length of hind tibia (Fig. 1). Posterior part of T2, T3-T7 with short, dense and recumbent setae; S2-S6 with short, sparse and recumbent setae; S7 with semi-erect, short and dense setae. (Figs. 1, 16).
Male (Fig. 2). Body length 11.5 mm. Fore wing length: 9.0 mm. Similar to female. A3 2.8 times as long as wide; A4 4.1 times as long as wide, and 1.6 times as long as length of A3; A5 4.4 times as long as wide, and 1.6 times as long as A3; dorsal surface of hind coxa weakly transverse-carinulate; hind basitarsus 1.2 times as long as tarsomeres 2–5; petiole 3.3 times as long as wide; T2 largely smooth including posterior margin; subgenital plate with a short apodema sternalis, anterior margin rounded laterally, slightly concave medially, its median part with scale-like sculpture (Fig. 17); apex of paramere acute, cuspis wide and curved, digitus wide with lower apex narrow and long (Figs. 18, 19, 21); aedeagus almost straight, its penis valve 2.8 times as long as basal apodeme (Fig. 20), its apex sharply produced in dorsal and ventral views (Figs. 18, 19).
Variability. The colouration and the colour pattern are almost constant. The variation of some morphometric measures are indicated in the following.
Female. Body length: 11.5–15.0 mm; antenna length: 8.0–9.0 mm; POL 1.1-1.3 times as long as OOL; A3 3.3– 3.5 times as long as wide; A4 4.7–4.9 times as long as wide; A5 5.0–5.5 times as long as wide; fore wing length: 10.0– 12.5 mm; fore wing with vein 2SR+M 0.2–0.5 times as long as vein m-cu-1; hind basitarsus 1.3–1.4 times as long as tarsomeres 2–5; petiole (metasomal segments 1–2) elongate and slender, 2.7 times as long as maximum width ovipositor length: 15.0– 24.5 mm, 1.5–1.9 times as long as length of fore wing, and 3.8–4.9 times as long as length of hind tibia. Male. Body length: 10.0– 11.5 mm; A3 2.7–3.1 times as long as wide; A4 4.1–4.4 times as long as wide, and 1.6–1.8 times as long as length of A3; A5 4.2–4.7 times as long as wide, and 1.6–1.8 times as long as A3; fore wing length: 7.5–9.0 mm; hind basitarsus 1.1–1.2 times as long as tarsomeres 2–5; petiole 3.2–3.6 times as long as wide.
Male. Body length: 10.0– 11.5 mm; A3 2.7–3.1 times as long as wide; A4 4.1–4.4 times as long as wide, and 1.6–1.8 times as long as length of A3; A5 4.2–4.7 times as long as wide, and 1.6–1.8 times as long as A3; fore wing length: 7.5–9.0 mm; hind basitarsus 1.1–1.2 times as long as tarsomeres 2–5; petiole 3.2–3.6 times as long as wide.
Material examined. JAPAN, Tokyo, Ogasawara Islands. [Anijima Island] (Holotype) female, 18. viii. 2010, Malaise trap by Japan Forest Technology Association (JFTA) (KPMNH) (KPM-NK5001125); (Paratypes) 6 females, same data of holotype (KPMNH) (KPM-NK5001126–KPM-NK5001131); 2 females, 14. ix. 2009, Malaise trap by JFTA (KPMNH) (KPM-NK5001132–KPM-NK5001133); 8 females and 7 males, no data of month and day, 2010, Malaise trap by JFTA (3 females and 3 males in KPMNH; 3 females and 2 males in NIAES; 2 females and 2 males in UCTC) (KPM-NK5001134–KPM-NK5001139).
Distribution. JAPAN (Ogasawara Islands: Anijima Island).
Biology. Unknown.
Remarks. This species can easily be distinguished from P. boninensis by the occiput without concavity (with deep concavity in boninensis) and the black hind tarsus (yellow in boninensis). The most similar species is P. rufipilosus, due to the following commonly shared features: 1) frons having a distinctive punctuation with the rest of the head, coarse, deep and dense; 2) lateroventral margin of pronotum regularly rounded without tooth-like processes; 3) tarsal claw pectinate, with four tooth-like processes; 4) ovipositor long more than 1.5 times than fore wing length. The new species can be easily distinguished from P. rufipilosus for several features reported in Table 1.
description: Published as part of Watanabe, Kyohei, Konishi, Kazuhiko & Turrisi, Giuseppe Fabrizio, 2013, Diversity of Aulacidae (Hymenoptera: Evanioidea) in the oceanic Ogasawara Islands (Japan), with description of a new species from Anijima Island, pp. 187-197 in Zootaxa 3736 (2) on pages 189-193, DOI: 10.11646/zootaxa.3736.2.6, http://zenodo.org/record/223704