The trombiculid mites (chigger mites) of the genera Doioisia Oudemans 1910, and Traubacarus Audy et Nadchatram 1957 (Acariformes : Trombiculidae) from North Viet Nam. Entomologicheskoe Obozrenie, 40 1961: 448-453. 451 [Zoological Record Volume 98]