Pristaulacus boninensis Konishi, 1989

Published, First, 2007, Revision of the Palaearctic species of Pristaulacus Kieffer, 1900 (Hymenoptera: Aulacidae), Zootaxa 1433, pp. 1-76 : 16-19

Pristaulacus boninensis Konishi, 1989

( Figs. 5, 25, 45, 65, 115)

Pristaulacus boninensis Konishi, 1989: 337 (♀).

Pristaulacus boninensis: Smith, 2001: 279 .

Material examined. JAPAN: holotype ♀ labelled “Hahajima Is., Ogasawara, 1–8.VII.1986, H. Makihara / Holotype, Pristaulacus boninensis Konishi, 1989 , Jpn. J. Ent., 57” ( ITLJ) ; paratype ♀ labelled “Hahajima Is., Ogasawara Isls., 1–8.VII.1986, H. Makihara / Paratype, Pristaulacus boninensis Konishi, 1989 , Jpn. J. Ent., 57” ( USNM) ; paratype ♀ labelled “Hahajima Is., Ogasawara Isls., 9–12.VII.1987, Em. 1.X.1987, H. Maki-

hara/ Paratype, Pristaulacus boninensis Konishi, 1989 , Jpn. J. Ent., 57” ( ITLJ) ; Bonin Is., Chichi Jima Omura , “camp beach”, 2–25.IV.1958, 1♀, F.M. Snyder leg. ( BPBM) ; 7♀, 7♂, 5.V–9.VI.1958, F.M. Snyder leg. ( BPBM) ; Bonin Is., Chichi Jima Miyanohama , “Jack Wm’s beach”, 9.IV–12.V.1958, 1♂, F.M. Snyder leg. ( BPBM) .

Records from literature. Konishi (1989, 1990).

Type locality. “Hahajima Is., Ogasawara Isls.” ( Konishi 1989).

Notes on type material. – The type material consists of seven female ( ITLJ), including the holotype (in good condition), and six paratypes ( Konishi 1989) .

Redescription. ♀ (paratype). Length (excluding ovipositor): 12.1 mm; fore wing length: 8.6 mm.

Colour black except: mandible medially dark reddish; maxillo-labial complex dark brown with articles 4– 6 of maxillary palpus lighter; A1 reddish orange ventrally; occipital carina dark brown; fore and mid trochanters, femora, fore and mid tibiae, apex of hind tibia, spurs and tarsi yellow orange with mid trochanters darker; hind femur and tibia blackish brown; wings hyaline, with veins and stigma dark brown, except median part of stigma, lighter; fore wing with a subcircular brown spot below stigma; apex of T1 lighter; valvula 3 of ovipositor brown. Setae: mainly whitish, except brown on part of frons and metasoma and yellow gold on mandibles.

Head ( Figs. 5, 25) from above, 1.3x wider than long, polished and shiny; occipital margin grooved medially; temple, from above, moderately developed, 0.6x as long as eye length, moderately convergent and rounded posteriorly; occipital carina moderately wide, lamelliform, medially interrupted, 0.5x diameter of an ocellus; POL:OOL= 1.0; ocellar area 2.1x wider than long; frons with fine, superficial and scattered punctures (distance between punctures 3x diameter of a puncture), less dense on vertex and on temples; clypeus with coarse and dense punctures; malar area with irregular, fine, moderately deep, and dense punctures; occipital area polished; mandible polished and shiny, with coarse and deep punctures on base and in middle; antenna 0.8x as long as fore wing length; A3 5.0x longer than wide; A4 9.2x longer than wide, and 1.5x longer than A3; A5 8.4x longer than wide, and 1.3x longer than A3; following antennomeres progressively shorter, last one dorsoventrally compressed, with apex rounded, 2.2x longer than wide. Setae: erect, and moderately long and dense on upper half of frons and on temple, scattered on vertex; recumbent and moderately long and dense on lower half of frons and on clypeus; recumbent, short, and moderately dense on malar area; semierect, short, and moderately dense on A1; setae length of temple 0.5–0.6x diameter of an ocellus.

Mesosoma ( Fig. 45) coarsely sculptured; pronotum areolate rugose, with each lateroventral margin angulate, bearing a strong tooth; propleuron shiny, with very fine, superficial, and scattered punctures (distance between punctures 2x diameter of a puncture); prescutum weakly concave in middle, triangular, transverse carinate; mesoscutum transverse carinate, with anterior margin, in lateral view, regularly rounded; notaulus moderately deep and very wide; scutellum transverse carinate, with a few subcircular carinae, sometimes interrupted; mesepimeron transverse carinate, with carinae well developed and widely spaced; mesepisternum areolate rugose, with upper third punctate foveolate; metanotum longitudinally carinate; propodeum areolate rugose, with short, longitudinal carinae on anterior margin; ventral parts of mesosoma shiny, transverse carinulate laterally and medially; fore wing with vein 2-rs+m short; fore coxa polished, shiny, with wide, superficial, and scattered punctures; mid coxa shiny except outer half, transverse carinulate with moderately dense and deep punctures on base; hind coxa ( Fig. 65) shiny, coarsely and regularly transverse carinate on dorsal surface, polished, with fine, superficial, and scattered punctures on ventral surface (distance between punctures more than 3x diameter of a puncture) and transverse carinulate on lateral margins; trochanters polished, shiny, with regular, fine, superficial, and scattered punctures, coarser and deeper on hind trochanter; femora dull on dorsal surface, shiny on ventral surface; fore and mid femora with moderately coarse, deep, and dense punctures on dorsal surface, fine, superficial, and very scattered punctures on ventral surface; hind femur with coarser and well-defined punctures on dorsal surface; inner spur of mid and hind tibiae slightly longer than outer spur; hind basitarsus 9.7x longer than wide, and 1.1x as tarsomeres 2–5; claw with four well-developed teeth. Setae: semierect, short, and scattered on dorsal surface, slightly longer and denser on lateral and ventral parts; erect and moderately long and dense on propleuron, with setae length 0.7x length of fore pretarsus; erect, long, and scattered on hind surface of propodeum; semierect and moderately long and dense on coxae and trochanters; recumbent, short, and moderately dense on dorsal surface of femora, erect, longer, and scattered on ventral surface.

Metasoma compressed laterally, pyriform in lateral view; petiole long and slender, 4.0x longer than wide; segments 1 and 2 polished and shiny; T3–T7 shiny, with very fine and moderately dense punctures; S7 with irregular, fine, and moderately dense punctures; T8 with fine, superficial, and scattered punctures; ovipositor 1.2x longer than fore wing length; apex of valvula 3 of ovipositor acute. Setae: segments 1 and 2 glabrous; recumbent, very short, and moderately dense on T3–T7; moderately dense and longer on S7 and on apical part of T8; semierect or recumbent and short on valvula 3.

ď. (according to Smith 2006, in litteris) - Length: 11.8 mm; fore wing length: 9.0 mm. Colour, structure, and setae like °‚, except: antenna 0.8x as fore wing length; A3 3.5x longer than wide; A4 5.5x longer than wide, and 1.6x longer than A3; A5 long and wide as A4; A13 cylindrical, slightly dorsoventrally compressed, about 5.0x longer than wide, with apex rounded; hind basitarsus 6.7x longer than wide.

Intraspecific variation. Examined: 11♀, 8♂. Length (excluding ovipositor): 9.5–12.1 mm (♀); 9.5-11.8 (♂); fore wing length: 7.6–8.6 mm (♀); 6.1-9.0 (♂).

Distribution. Japan: Hahajima Island (Ogasawara Islands).

Remarks. Pristaulacus boninensis has a median occipital groove as P. comptipennis Enderlein ; it can be distinguished by the shape of the head, with the temple narrower and less convergent posteriorly, by the presence of only one brown spot on the fore wing (several brown spots in P. comptipennis ), and by the light yellow-orange fore and mid legs (red brown in P. comptipennis ). The male, previoulsy unknown, is described for the first time.

Biology. Hosts: type specimens were obtained together with Ceresium unicolor (Fabricius, 1787) ( Coleoptera , Cerambycidae ) ( Konishi 1989, 1990).