Pristaulacus vietnamensis Turrisi & Smith, 2011

Turrisi, Giuseppe Fabrizio & Smith, David R., 2011, Systematic revision and phylogeny of the endemic southeastern Asian Pristaulacus comptipennis species group (Hymenoptera: Aulacidae) 2959, Zootaxa 2959 (1), pp. 1-72 : 51-54

Pristaulacus vietnamensis Turrisi & Smith , sp. nov.

( Figs 145–153 )

Type material. VIETNAM: holotype ♀, “ Vietnam: Ha Tinh, Huong Son , 900 m, 18°22'N, 105°13'E, 18– 28.V.1998, L. Herman, MT/USNM 2046975/ Pristaulacus vietnamensis Turrisi & Smith sp. n. ♀, 2009, Holotypus ” ( AMNH) . THAILAND: 1♀, “Thailand, Loei Phu Ruea NP Nature tail, 17º30.74'N 101º20.65'E 1353 m Malaise trap, 12–19.iii.2007 Patikhom Tumtip leg. T2314/ Pristaulacus vietnamensis Turrisi & Smith sp. n. ♀, 2009, Paratypus ” ( QSBG) ; 1♀, same data as previous, except data of collection: 26.iii–2.iv.2007 ( QSBG) ; 1♀, “ Thailand, Loei Phu Ruea NP Rong Huay Maklaow, 17°29.652'N 0°E 1167 m Litter Sample 5–8.v.2007, Patikhom Tumtip leg., T2623/ Pristaulacus vietnamensis Turrisi & Smith sp. n. ♀, 2009, Paratypus ” ( QSBG) ; 1♀, “ Thailand, Lampang, Chae Son NP Mae Paan unit lavat. 18°49.505'N 99°24.63'E 956 m Malaise trap 1–7.iii.2008, B. Kwannui & A. Sukpeng leg. T5407/ Pristaulacus vietnamensis Turrisi & Smith sp. n. ♀, 2009, Paratypus ” ( QSBG) ; 3♀, “ Thailand, Chaiyaphum, Pa Hin Ngam NP Mix deciduous forest, 15º34.686'N 101°26.082'E, 419 m, Malaise trap, 1– 7.v.2007, Katae Sa-nog & Buakaw Adnafai leg. T2592/ Pristaulacus vietnamensis Turrisi & Smith sp. n. ♀, 2009, Paratypus ” ( QSBG) ; 1♀, “ Thailand, Chaiyaphum, Pa Hi Ngam NP, Dry evergreen forest at waterfall area, 15º34.802'N 101º25.99'E, 430 m, Malaise trap, 13–19.v.2007, Katae Sa-nog & Buakaw Adnafai leg. T2597/ Pristaulacus vietnamensis Turrisi & Smith sp. n. ♀, 2009, Paratypus ” ( QSBG) .

Etymology. The name is derived from Vietnam, a noun in apposition.

Description. FEMALE (holotype). Length: 9.5 mm; fore wing length: 7.3 mm; ovipositor length: 9.4 mm.

Colour black, except: mandible yellowish on basal half, reddish orange on apical half; maxillo-labial complex dark brown, with palpomeres lighter; antenna with A1 reddish orange; fore leg, except coxa, reddish orange; mid leg, except coxa, dark reddish brown with basal and distal third of mid tibia and tarsus, reddish orange; hind tibia and tarsus yellowish orange; pretarsi and claws dark brown; wings hyaline; fore wing with a moderately wide subquadrate dark brown spot below stigma (slightly less than stigma length and extended posteriorly to cell SM2) and apex slightly infuscate. Setae: whitish; slightly goldish on mandible.

Head, from above 1.3 × wider than long, shiny; occipital margin with a wide and deep medial groove; temple, from above, well developed, rounded posteriorly, about as eye length; occipital carina moderately wide, 0.5–0.6 × diameter of an ocellus, absent on occipital medial groove; POL:OOL= 1.1; ocellar area 1.8 × wider than long; vertex irregularly punctate, with fine (a few coarse), deep and scattered to dense (on ocellar area and behind ocelli) punctures (distance between punctures 4.0–5.0 × to 1.0–2.0 × puncture diameters); temple with fine, superficial and mostly scattered punctures (distance between punctures 4.0–5.0 × puncture diameters), dense on upper part and behind eye (distance between punctures 2.0 × puncture diameters); upper frons with fine, deep and dense punctures (distance between punctures 2.0 × puncture diameters); lower frons with fine to coarse, deep and dense punctures (distance between punctures 1.0 × puncture diameters); clypeus with coarse, deep and dense punctures; malar area with fine to coarse, deep and dense punctures; occipital area with fine, superficial and dense punctures; antenna 0.7 × fore wing length; A3 3.4 × longer than wide; A4 6.6 × longer than wide, and 1.9 × longer than A3; A5 5.8 × longer than wide, and 1.7 × longer than A3. Setae: erect, long and dense on vertex; erect to semi erect, long and dense on temple (length of setae 0.8–0.9 × diameter of an ocellus); erect, long and dense on upper half of frons; recumbent, long and dense on lower half of frons and clypeus; recumbent, short and dense on malar area.

Mesosoma coarsely sculptured; pronotum areolate-rugose, with one well-developed anterior tooth-like process on each lateroventral margin; propleuron polished and shiny with coarse, deep and dense punctures on dorsal surface, fine, superficial and dense punctures on ventral surface (distance between punctures 2.0 × puncture diameters); prescutum triangular, wide, long, very weakly concave (except basally), transverse-carinate; mesoscutum transverse-carinate on anterior lobe to areolate-rugose posterior to notauli; dorsally weakly convex, not prominent; anterior margin not prominent, rounded (lateral view); notauli deep and wide; scutellum transverse-carinulate medially, otherwise confused-rugose; mesopleuron areolate-rugose, except a wide part of subalar area, confused rugulose-punctate with coarse and dense punctures; metanotum longitudinally carinate, medially areolate-rugose; propodeum coarsely areolate-rugose, anterior margin longitudinally carinate, carinae irregular; venter of mesosoma transverse-carinulate to polished (in middle) with narrow transverse carinae medially; fore wing with vein 2-rs+m short; coxa I polished with fine, superficial and dense punctures; coxa II transverse-carinate; coxa III transversecarinate-punctate, with coarse, deep and dense punctures (distance between punctures 2.0–3.0 × puncture diameters); spurs of mid tibia subequal in length; inner spur of hind tibia quite longer than outer spur; hind basitarsus 10.4 × longer than wide, and 1.3 × as tarsomeres 2–5; tarsal claw with four tooth-like processes. Setae: erect to semi erect, short and scattered to dense on dorsal surface; recumbent to semi erect, short to long and dense on sides and venter of mesosoma; erect, long and scattered on hind surface of propodeum; erect, short and dense on propleuron (setae length at most 0.4 × pretarsus length).

Metasoma pyriform (lateral view), strongly compressed laterally; petiole elongate, slender, 5.0 × longer than wide; segments 1 and 2 mostly polished and shiny, with a few scattered coarse and deep punctures medially on T1, T2; remaining tergites with a weak and fine microsculpture and fine, superficial and dense punctures, except laterally; sternites polished and impunctate; S7 polished to longitudinally-carinulate, with coarse, deep and dense punctures; T8 coarsely microreticulate, with fine (not well defined), superficial and scattered punctures; ovipositor 1.3 × fore wing length. Setae: segments 1–2 and most remaining sternites (except S7) glabrous; recumbent, short and dense on remaining tergites, except sides; semi erect, short and dense on S7.

MALE unknown.

Variation. Examined 9♀. Length: 7.8–10.9 mm; fore wing length: 5.5–8.0 mm; ovipositor 1.2–1.3 × fore wing length. The colour is slightly variable within the specimens examined: the fore coxa is extensively reddish orange in one specimen paratype; the legs are lighter in a few specimens; the hind tarsus is darker in one specimen paratype; the colour and the colour pattern of the wings is almost constant.

Distribution. Vietnam, Thailand ( Fig. 186 ).

Biology. Unknown.

Figures

FIGURE 186. Distribution map of Pristaulacus comptipennis species group. The number of species is indicated for each subregions, north: Japanese islands, middle: China and surroundings, south: Laos, Thailand, Vietnam. Letters refer to species: a, P. asiaticus; b, P. boninensis; c, P. comptipennis; d, P. corellianus; e, P. dilleri; f, P. emarginaticeps; g, P. excisus; h, P. gusenleitneri; i, P. insularis; j, P. jenningsi; k, P.konishii; l, P. lagrecai; m, P. nobilei; n, P. porcatus; o, P. sharkeyi; p, P. thailandensis; q, P. vietnamensis; r, P. vilhelmseni; s, P. vivaldianus; t, P. watanabei.

FIGURES 145–149. Pristaulacus vietnamensis sp. nov., holotype ♀. 145. Head, dorsal view. 146. Head, frontal view. 147. Head, lateral view. 148. Mesosoma, dorsal view. 149. Pronotum, lateral view.

FIGURES 150–153. Pristaulacus vietnamensis sp. nov., holotype ♀. 150. Wings. 151. Mesosoma, lateral view. 152. Hind coxae, ventral view. 153. Metasoma, lateral view.