Phanoperla lao Stark, 1983

Sivec, Ignac & Stark, Bill P., 2010, Seven New Species Of Phanoperla Banks From Vietnam And Thailand (Plecoptera: Perlidae), Illiesia 6 (10), pp. 98-112 : 102-103

Phanoperla lao Stark

( Figs. 11 , 14-15 )

Phanoperla lao Stark, 1983:99 .

Holotype ♂ (National Reference Collection, Thailand). Chiang Mai, Mon Ung Kate , Thailand

Material examined. Thailand: Chiang Mai Province, Doi Inthanon National Park, Huai Sai Lueng , 98° 27’ N, 18° 31’ E, 1060 m, 7-8 May 2002 , Chiang Mai University Team , 1♂, 1♀ ( PMSL) .

This species was previously known from the type series of 10 male specimens collected in Chiang Mai Province. The female is associated for the first time.

Female. Biocellate. Forewing length 11 mm. Head rather uniformly brown except for pale M-line. Pronotum with dark median band and scattered dark rugosities on disk ( Fig. 14 ). Subgenital plate slightly produced and deeply divided by a quadrate notch into two small lobes ( Fig. 15 ).

Egg. Tear drop-shaped, length ca. 318 µm, equatorial width ca. 238 µm. Collar sessile but anchor petiolate, ca. 120 µm long ( Fig. 11 ). Chorionic surface finely pitted throughout.

Remarks. The egg, female and aedeagus of this species place it close to P. himalayana Zwick in the P. maindroni (Navas) species group as defined by Zwick (1982).

Figures

Figs. 8-11. Phanoperla eggs. P. huang (8-10), P. lao (11). 8. Entire egg, lateral. 9. Detail of collar and anchor. 10. Detail of lid. 11. Entire egg, lateral.

Figs. 14-15. Phanoperla lao. 14. Head and pronotum. 15. Female terminalia.