Abstract
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.
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