The Genus Pristaulacus Kieffer, 1900 (hymenoptera: Aulacidae) in Vietnam and Northeastern Laos with Descriptions of Ten New Species

The genus Pristaulacus Kieffer (Hymenoptera, Aulacidae) from Vietnam is revised with eight new species, namely P. alius Long, sp. nov., P. bicoloratus Long & Jennings, sp. nov., P. chumomrayi Long & Turrisi, sp. nov., P. diffusus Long & Turrisi, sp. nov. (including Northeastern Laos), P. mellosus Turrisi, Long & Pham, sp. nov. (including Northeastern Laos), P. phiaoacus Long, sp. nov., P. simulatus Long, Jennings & Turrisi, sp. nov. (including Northeastern Laos), P. tranganicus Long & Pham, sp. nov. are described and illustrated, and one species, P. asiaticus Turrisi & Smith, 2011 is recorded for the first time from Vietnam. In addition, two new species from Northeastern Laos (Houaphanh province) are described, P. mathematicus Turrisi & Jennings, sp. nov., and P. pilosellus Turrisi & Long, sp. nov. A key to Vietnamese Pristaulacus species is provided.