Cryptoperla klapaleki, Stark & Sivec, 2007

Stark, Bill P. & Sivec, Ignac, 2007, Taiwanese Species Of Cryptoperla (Plecoptera: Peltoperlidae), Illiesia 3 (14), pp. 150-156 : 151-153

Cryptoperla klapaleki , nom. n.

( Figs. 5-12 )

Peltoperla formosana Klapálek, 1913:123 .

Holotype ♀, Taihorin, Formosa (not formosana Okamoto, 1912:136 ).

Peltoperlopsis formosana: Illies, 1966:24 .

Material examined. Holotype ♀ from Taiwan, Taihorin , 7 May 1911, H. Sauter . Additional material: Taiwan: Hsin Chu Co., W Kuaishan, 1350 m, 17 October 96, I. Sivec, 1 ♂ ( PMSL) . Same site except 1140 m, 16 October 1996, I. Sivec, 1 ♂, 4 ♀, 1 exuvium ( PMSL) . Hua Lien Co., Tayuling , 2400 m, 26 October 1996, I. Sivec, 1 ♂ ( PMSL) . Hua Lien Co., Tzuen, Taroko Natural Park , 1890 m, 13 April 1996, I. Sivec, B. Horvat, 1 ♂ (reared) ( PMSL) . Hua Lien Co., Anonymous Point , 1450 m, 5 April 1996, I. Sivec, B. Horvat, 5 ♂, 1 ♀ ( PMSL) . Ilan Co., E. Chihtuan, 1300 m, 19 March 1996, I. Sivec, B. Horvat, 1 ♀ ( PMSL) . Ilan Co., Chihtuan , 1110 m, 19 March 1996, I. Sivec, B. Horvat, 3 ♂ ( PMSL) . Kaoh Siung Co., E. Tientzu , 2400 m, 23 October 1996, I. Sivec, 1 ♂ ( PMSL) . Nanton Co., W. Puli, 880 m, 26 March 96, I. Sivec, B. Horvat, 1 ♀ ( PMSL) . Tai Chung Co., Wulin, 1950 m, Sheipa Natural Park , 29 October 1996, I. Sivec, 2 ♀ ( PMSL) . Tai Chung Co., Szchian-Lin , 550 m, 19 October 1996, I. Sivec, 2 ♂ ( PMSL) . Taipei Co., N. Shihpei, 350 m, 7 April 1996, I. Sivec, B. Horvat, 1 ♂ ( PMSL) . Taipei Co., N. Shihpei, 435 m, 7 April 1996, I. Sivec, B. Horvat, 1 ♂ ( PMSL) . Taipei Co., Gong Liao , 22 April 1995, P.L. Chang, Wang, 2 ♂ ( PMSL)

Adult habitus. Biocellate. General body color pale brown. Head pattern with a dark brown oval region anterior to ocelli connected to a narrow dark band between ocelli, or entire ocellar area dark; dark area behind ocelli somewhat paler ( Fig. 9 ). Pronotum pale brown with paler rugosities. Wing membrane transparent or slightly tinted with pale brown; veins pale brown but R vein darker. Legs pale brown.

Male. Forewing length 10.5-12 mm. Posterior margin of tergum 10 parabolic ( Fig. 10 ). Basal cercal segment ca. 3.5-4.5 X long as wide and bearing along inner margins, a dense but short setal fringe; cercal spur absent. Vesicle ca. 0.6-0.8 X long as wide. Aedeagal apex (possibly damaged) with three apparent major lobes ( Fig. 11 ); mesal lobe broad and armed ventrally with a dense patch of dark brown microsetae and scattered fine, transparent setae; lateral lobes narrow, finger-like and armed along venter with ca. 30 pale brown, longer setal spines.

9

10 12

Female. Forewing length 12-15 mm. Subgenital plate parabolic and reaching beyond midlength of segment 9; segment 9 almost hairless except along lateral margins ( Fig. 12 ).

Egg. Broadly oval, almost circular or bulb shaped in outline ( Fig. 6 ), length ca. 0.21 mm, width ca. 0.20 mm. Collar sessile, button-like, but surrounded by zone of modified follicle cell impressions ( Fig. 5 ). Chorion covered throughout by follicle cell impressions with elaborate, convoluted walls ( Figs. 7-8 ). Micropyles not detected.

Larva. The larva appears to be indistinguishable from that of C. uchidai , described below.

Etymology. The patronym honors F. Klapálek for his original description of this and other Taiwanese stoneflies.

Diagnosis. Eggs from the holotype ( Figs. 5-7 ) are quite similar to those from fresh material ( Fig. 8 ), but some variation is obvious; when a larger sample of eggs are available it may be necessary to re-evaluate the status of these recent specimens. This is the only Taiwanese species we recognize, at present, which lacks a cercal spur; unfortunately for most of our specimens the aedeagus could not be properly examined because they had been damaged during squeezing. Consequently it would be highly desirable to have additional males for this comparative study.

Figures

Figs. 5-8. Cryptoperla klapaleki eggs. 5. Oblique aspect anchor pole, holotype, 6. Oblique aspect anterior pole, holotype, 7. Chorionic detail, holotype, 8. Chorionic detail, specimen from E. Chihtuan, Ilan Co.

Figs. 9-12. Cryptoperla klapaleki structures. 9. Head and pronotum, 10. Male terminalia, 11. Aedeagus, ventral aspect, 12. Female sterna 8-9.