New Species And Records Of Neoperla (Plecoptera: Perlidae) From Vietnam Author Stark, Bill P. and Ignac Sivec & Box 4045, Department of Biology, Mississippi College, Clinton, Mississippi, U. S. A. 39058 E-mail: stark @ mc. edu stark@mc.edu Author Sivec, Ignac Slovenian Museum of Natural History, Prešernova 20, P. O. Box 290, SLO- 1001 Ljubljana, Slovenia E-mail: isivec @ pms-lj. si isivec@pms-lj.si text Illiesia 2008 2008-03-20 4 3 19 54 journal article http://doi.org/10.5281/zenodo.4758856 564cead7-264a-4ee4-b5ee-15fd3ba81657 1854-0392 4758856 Neoperla dao sp. n. ( Figs. 19‐22 ) Material examined. Holotype ♂ (pinned) from Vietnam , Vinh Phu , Tam Dao Hill Station , 930 m , UV light, 15 May 1996 , B. Hubley , D.C. Darling , M. Hanson , ROM 961032 ( ROM ) . Paratype : Vietnam : Vinh Phu , Tam Dao , 800‐900 m , 17‐31 May 1995 , A. Gorohov , 1 ♂ ( PMSL ) . Adult habitus. Biocellate. Head mostly dark but Mline, clypeus and tentoria pale. Pronotum brown with darker rugosities ( Fig. 19 ). Wings dark brown, veins darker except pale costal area. Femora pale in basal half and dark brown apically; tibiae dark brown. Figs. 19‐22. Neoperla dao . 19. Head and pronotum, 20. Male terminalia, 21. Male terminalia, lateral aspect, 22. Aedeagus. Male. Forewing length 16 mm . Tergum 7 process a raised plateau armed with scattered sensilla basiconica. Tergum 8 process tongue shaped, erect and curved forward ( Fig. 21 ); anterodorsal margin of process with a small patch of sensilla basiconica. Tergum 9 without sensilla patches. Hemitergal processes short and slender ( Fig. 20 ). Aedeagal tube very slender, relatively straight and heavily sclerotized except for a small subapical nipple shaped lobe ( Fig. 22 ). Aedeagal sac very short, ca. 1/3 tube length; sac without large spines but armed over most of surface with minute spines; base of sac unarmed ( Fig. 22 ). Female. Unknown. Larva. Unknown. Etymology. The species name, used as a noun in apposition, honors the Dao people of Vinh Phu Province. Diagnosis. The aedeagus of this species is generally similar to that of N. yentu but that species has a curved aedeagal tube and the ventral process is bilobed. Yang & Yang (1995 a , 1998) described three species which appear to be members of this complex. Two of these, N. hainanensis and N. quingyuanensis , have bowed aedeagal tubes but the other, N. longwangshana , has the tube and ventral lobe more similar to N. dao . Unfortunately the aedeagal sac was not shown in an everted position in Yang & Yang (1998) , and no material is available for our study, so no detailed comparison can be made for these species.