Pristaulacus insularis Konishi, 1990

Published, First, 2007, Revision of the Palaearctic species of Pristaulacus Kieffer, 1900 (Hymenoptera: Aulacidae), Zootaxa 1433, pp. 1-76 : 46-48

Pristaulacus insularis Konishi, 1990

( Figs. 13, 33, 53, 73, 87, 115)

Pristaulacus insularis Konishi, 1990: 650 (♀).

Pristaulacus insularis: Smith, 2001: 288 .

Material examined. JAPAN: holotype ♀ labelled “VII.16.1966, Satomura, Mikura-jima, H. Hasegawa / Holotype, Pristaulacus insularis Konishi, 1990 , Jpn. J. Ent. 58” ( ITLJ) ; paratype ♀ labelled “Chikuzen-Okinoshima Is., Fukuoka Pref., 18.VIII.1989, R. Noda / Paratype, Pristaulacus insularis Konishi, 1990 , Jpn. J. Ent. 58” ( ITLJ) ; paratype ♂ labelled “Yakushima Is., 30.III.1987, Em. 1.IV.1989, H. Makihara / Pristaulacus insularis Konishi, 1990 , Jpn. J. Ent. 58” ( ITLJ) .

Records from literature. Konishi (1990).

Type locality. “Sato, Mikura-jima Is.” ( Konishi 1990).

Notes on type material. The type material consists of the holotype ♀ and 49 paratypes (43♀, 6♂), mostly

preserved in ITLJ, with some paratypes in USNM.

Redescription. ♀ (holotype). Length (excluding ovipositor): 12.0 mm; fore wing length: 9.2 mm.

Colour black, except: mandible extensively dark red medially; maxillo-labial complex dark brown; A1 dark red; following antennomeres blackish; occipital carina dark brown; coxae and trochanters blackish brown; hind femur and tibia dark brown; fore and mid tibiae and tarsi red orange; hind tibia and tarsus darker; wings hyaline, with veins and stigma brown; fore wing with a small subrectangular brown spot behind stigma, reaching distal part of SM1; metasoma with apex of tergites brown; valvula 3 of ovipositor dark brown. Setae: light brown on most of head and on metasoma; whitish on lower half of frons, on clypeus, on malar area, on part of temple and on mesosoma; yellow gold on mandible.

Head ( Figs. 13, 33) from above, 1.3x wider than long, polished and shiny; occipital margin medially grooved; temple, from above, moderately developed, 0.8x as long as eye length, strongly convergent posteriorly, and weakly convex; occipital carina wide, lamelliform, 1x diameter of an ocellus, absent along median occipital groove; POL:OOL= 1.3; ocellar area 2.0x wider than long; frons and clypeus polished, with moderately coarse, superficial, and dense punctures (distance between punctures 1–2x diameter of a puncture); vertex and temple with fine, superficial, and scattered punctures (distance between punctures 3–4x diameter of a puncture); malar area with irregular, coarse, deep, and dense punctures; occipital area polished; mandible polished and shiny with coarse and deep punctures on base and in middle; antenna length 0.8x fore wing length; A3 6.2x longer than wide; A4 9.8x longer than wide, and 1.6x longer than A3; A5 10.0x longer than wide, and 1.3x longer than A3; following antennomeres progressively shorter, the apical one dorsoventrally compressed, with apex rounded, 2.5x longer than wide. Setae: erect, long, and dense on upper half of frons, recumbent on lower half of frons and on clypeus; erect and moderately dense on vertex and on temple; recumbent, short, and moderately dense on malar area; semierect, short, and scattered on A1; setae length of temple 1.0–1.1x diameter of an ocellus.

Mesosoma ( Fig. 53) coarsely sculptured; pronotum areolate rugose, with one moderately developed tooth on each lateroventral margin; propleuron polished and shiny, with coarse, moderately deep, and dense punctures (distance between punctures about 1x diameter of a puncture); prescutum trapezoidal, deeply concave in middle, transverse carinate; mesoscutum transverse carinate, with anterior margin, in lateral view, regularly rounded; notaulus deep and very wide; scutellum transverse carinate in middle, areolate rugose on lateral parts, especially on anterior half; mesepimeron transverse carinate; mesepisternum areolate rugose with a small area on upper part, foveolate rugulose; metanotum longitudinally carinate; propodeum areolate rugose; ventral parts of mesosoma polished, irregularly carinate on sides and medially; fore wing with vein 2-rs+m short; fore coxa polished, shiny, with fine, superficial, and scattered punctures, except on base, irregularly rugose, with coarse, deep, and moderately dense punctures; mid coxa shiny, transverse-carinulate, with scattered punctures, except on base, polished, with moderately dense punctures; hind coxa ( Fig. 73) shiny, transverse carinate on dorsal surface, polished, with fine, superficial to moderately deep, and scattered punctures (distance between punctures 4x diameter of a puncture) on ventral surface, and very short carinae on sides; base of hind coxa dull, with fine sculpture; trochanters shiny, with irregular, fine, superficial, and scattered to moderately dense punctures, very scattered on fore trochanters; femora dull on dorsal surface, with coarse, deep, and dense punctures, shiny on ventral surface, with fine, superficial, and very scattered punctures; spurs of mid tibia of same length; inner spur of hind tibia slightly longer than outer spur; hind basitarsus 12.3x longer than wide, and 1.3x longer than tarsomeres 2–5; claw with four well-developed teeth. Setae: erect or semierect, short, and scattered on dorsal surface, more dense and longer on lateral parts, especially on sides of pronotum, on mesopleuron, and on part of lateral lobe of mesoscutum; erect, long, and scattered on hind surface of propodeum; erect, moderately long, and moderately dense on propleuron, with setae length 0.7x fore pretarsus length; semierect, moderately long, and dense on ventral surface of fore and mid coxae; recumbent, short, and moderately dense on dorsal surface of hind coxa, erect, long, and moderately dense on ventral and lateral parts; semierect, moderately long, and dense, on trochanters; recumbent, short, and dense on dorsal sur- face of femora, erect, longer, and scattered on ventral surface.

Metasoma moderately compressed laterally, pyriform in lateral view; petiole elongate, slender, 3.5x longer than wide; segments 1 and 2 polished and shiny; T3–T7 and S3–S6 shiny, with very fine, superficial, and moderately dense punctures, except on lateral margins of S3–S6; S7 with fine, superficial, and moderately dense punctures; T8 shiny, very slightly sculptured, with fine and scattered punctures; ovipositor 1.1x longer than fore wing length; valvula 3 with apex acute. Setae: segments 1-2 glabrous; recumbent, short to very short, and moderately dense on T3–T7 and on median surface of S3–S6; recumbent, moderately long, and dense on S7 and T8.

ď (paratype). Length: 9.4 mm; fore wing length: 7.2 mm. Colour, structure, and setae like ♀, except: A3 3.4x longer than wide; A4 5.4x longer than wide, and 1.6x longer than A3; A5 5.4x longer than wide, and 1.6x longer than A3; hind basitarsus 10.0x longer than wide, and 1.2x longer than tarsomeres 2–5; petiole 3.5x longer than wide; metasomal tergites and medial part of sternites except segments 1 and 2 with recumbent, very short, and dense setae; genital capsule ( Fig. 87) with apex of paramere acute, cuspis moderately wide, curved, digitus wide with lower apex narrow and long.

Intraspecific variation. Examined: 2♀, 1♂. Length (♀ – ♂): 9.5–11.7 mm; fore wing length (♀ – ♂): 7.5– 10.9 mm.

Distribution. Japan (Honshu, Mikura-jima Island, Hachijô-jima Island, Chikuzen-okino-shima Island, Yaku-shima Island, Amami-ôshima Island).

Remarks. Pristaulacus insularis , as P. comptipennis and P. boninensis , has a median occipital groove, although wider and shallower, and an entirely black metasoma.

Biology. Unknown.