Acroneuria VN

Stark, Bill P. & Sivec, Ignac, 2008, New Vietnamese Species Of Genus Acroneuria (Plecoptera: Perlidae), Illiesia 4 (16), pp. 154-160 : 159-160

Acroneuria VN ‐ A

( Figs. 18‐19 )

Material examined. Vietnam: Lao Cai Province, ca. 12 km along road from Sapa to Lai Chau, 1950 m, 22° 20’ 58.3” N, 103° 46’ 15.7” E, 29 April‐12 May 1999, MV light, B. Hubley, ROM 992004 , 1 ♀ (pinned, ROM).

Adult habitus. Triocellate. General color black with

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iridescent sheen. Head and pronotum shiny black. Fore and mid femora black, hind femora banded with dark pigment basally and distally and yellow band on median third; tibiae and tarsi black. Wings, cerci and antennae black.

Female. Forewing length 28 mm. Subgenital plate projects over basal third of sternum 9 ( Fig. 18 ); posterior margin of plate emarginate and darkly pigmented along edge and at base. Vagina a slender

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membranous bag lined along dorsum with fine triangular spines near apex (Fig. 19); slender vaginal accessory glands present at anterior angles.

Egg. None could be extracted prior to clearing with KOH. The shape and collar appears similar to the eggs of other Vietnamese species.

Figures

Figs. 16‐19. Acroneuria structures. 16. A. bachma aedeagus, ventral, 17. A. magnifica aedeagus, ventral, 18. A. VN‐A female terminalia, ventral, 19. A. VN‐A vagina, dorsal.