Cryptoperla sp.

Stark, Bill P. & Sivec, Ignac, 2007, Taiwanese Species Of Cryptoperla (Plecoptera: Peltoperlidae), Illiesia 3 (14), pp. 150-156 : 156

Cryptoperla sp. Tw A

(Figs. 19-20)

Peltoperla formosana Stark, 1989:521 (not formosana Klapálek ).

Material examined. Taiwan: Chito Experimental Forest , 1150 m, 12-15 October 1957, T.C. Maa, 1 ♀ ( BPBM, specimen lost). Chaochi near Yilan to Pinglin, Taipei, Hsien, 15-16 April 1965, C.M. Yoshimoto, 1 ♀ ( BPBM, specimen lost) .

Male. Unknown.

Female. Forewing length 11 mm. Subgenital plate parabolic, reaching near posterior margin of sternum 9 (Fig. 79 in Stark 1989).

Egg. Outline bulb shaped. Collar an obscure low button surrounded by a broad, smooth depression. Chorionic surface covered with hexagonal follicle cell impressions. FCI walls thick and slanted inward creating small, flat floors; floors with a single central pore; rims and walls covered with irregular parallel ridges which almost meet on the rim, but leave a narrow irregular line around each FCI. Micropyles near collar end set at junction of FCIs (Figs. 19-20).

Diagnosis. These females were described by Stark (1989) who speculated “they may represent this [ P. formosana Klapálek ] species”. Our study of the eggs from the holotype of that species ends that speculation, and we are left with the possibility that these females represent a species distinct from any of the others known from Taiwan. Unfortunately, the specimens are missing from the Bishop Museum. Hopefully additional material of this species will become available in the near future .