of Viet Nam. These include thirteen known, P. aculentus, P. arculatus, P. colbrani, P. corbetti,
P. costatus, P. dianthus, P. discocephalus, P. elachistus, P. epicotylus, P. nawadus, P.
pandatus, P. perlatus and P. serricaudatus, and a new species, herein described, P.
laocaiensis sp. nov. The new species differs from other known species of the genus by the
relatively anterior position of the excretory pore and vulva, as well as the stylet extending …