Neoperla affinis Zwick, 1985

Stark, Bill P. & Sivec, Ignac, 2007, Studies Of Indonesian Perlidae (Plecoptera), With Descriptions Of Three New Species, Illiesia 3 (7), pp. 53-64 : 54

Neoperla affinis Zwick

( Figs. 1‐2 )

Neoperla affinis Zwick, 1983:193 . Holotype ♂, Tanangtalu , Sumatra

Neoperla affinis: Zwick & Sivec, 1985:129 . New records

Material examined. Indonesia: Sumatra, Aceh, Mt. Leuser National Park, Ketambe Research Station, Alas River, 3° 41’ N, 97° 39’ E, 350 m, 5 September 1989, ROM 893053, W.K. Gall, 1 ♂, 7 ♀ ( MZB, ROM). Remarks. This species is known from about a dozen sites on Sumatra but had not previously been reported from this locality. Present collections are from most months between March and December ( Zwick 1983; Zwick & Sivec 1985). Zwick’s (1983) description of the egg from light microscopy is supported by our figures from scanning electron microscopy ( Figs.1‐2 ). The chorion is covered throughout, except for a bare area surrounding the collar, with closely grouped, fine shallow pits, and the sessile collar consists of a shallow depression from which a long anchor pedicel (broken in our specimen) extends.

Figures

Figs. 1‐2. Neoperla affinis eggs. 1. Entire egg, 2. Collar end.