Kiotina collaris (Banks)

Stark, Bill P. & Sivec, Ignac, 2008, Systematic Notes On Kiotina Klapálek And Hemacroneuria Enderlein (Plecoptera: Perlidae), With Description Of Four New Species, Illiesia 4 (17), pp. 161-175 : 164-166

Kiotina collaris (Banks)

( Figs. 5–16 )

Schistoperla collaris Banks, 1937:271 . Taiheizan, Taiwan (Museum of Comparative Zoology, Harvard) Schistoperla collaris: Kawai, 1968b:245 .

Kiotina collaris: Uchida, 1990:135 .

Kiotina collaris: Du et al., 1999:63 .

Material examined. Taiwan: Taipei Co., Wulai Shiaoi , 350 m, 8 April 1996, I. Sivec, B. Horvat, 2 ♂, 1 ♀ ( PMSL) . Taipei Co., Shihpai , 450 m, 7 April 1996, I. Sivec, B. Horvat, 1 larva ( PMSL) . Wulai , near Taipei, 300-500 m, 12 April 1960, T.C. Maa, 2 ♂, 1 ♀ ( BPBM) . Ilan, Chihtuan , 18 April 1990, C.C. Chiang, 1 ♂ ( ZFMK) . Urai , 28 March 1932, M. Chugo, 2 ♂ ( ZFMK) . Urai , 3 April 1938, J. Sonan, 2 ♂ ( ZFMK) .

Adult habitus. Triocellate or some apparently biocellate; ocelli small and widely spaced. General body color dark brown to black. Head almost entirely black, pronotum black except pale band along lateral margins. Legs dark brown. Wings black except for pale costal band.

Male. Forewing length 15 mm. Abdominal tergum 10 with a pair of sharp pointed posterolateral spines on either side of median epiproct sclerite; epiproct sclerite Y-shaped with short wide stem and short arms; terga 9-10 without patches of sensilla basiconica ( Fig. 5 ). Paraprocts slender and strongly curved forward ( Figs. 5, 7 ). Oval hammer present on abdominal sternum 9 ( Fig. 6 ).

Female. Forewing length 17 mm. Subgenital plate with relatively parallel lateral margins for much of length, posterior margin with small median notch; plate extends over most of sternum 9 ( Fig. 8 ).

Egg. Length ca. 0.35 mm, width ca. 0.28 mm. Outline a plump oval shape with indistinct opercular line ( Figs. 9, 11 ). Collar small, button-like ( Fig. 12 ). Chorionic surface covered with small punctations throughout, follicle cell impressions obscure. Opercular line a circumlinear raised ridge ca. 4-5 punctations in width. Micropylar orifices sessile, much larger than punctations, and set on subequatorial line ( Fig. 10 ).

Larva. Triocellate, anterior ocellus minute. Body length ca. 18.5 mm. General color yellow-brown without distinctive pattern. Pronotal fringe interrupted along most of lateral margin. Gill filaments long and slender, projecting beyond thoracic notae; anal gills present. Dorsal abdominal intercalary setae on terga 7-10 generally less than 10 per segment, but more numerous laterally. Abdominal terga slightly darker along posterior margins. Cercomeres with strong setal whorls. Femora armed with strong bristles; tibiae and femora with sparse swimming fringe. Lacinia bidentate, inner tooth reaching beyond mid length of primary tooth; both teeth bearing irregular striae ( Figs. 13-14 ); inner margin of lacinia with ca. 5-6 thick primary bristles and several finer secondary bristles scattered to near base.Venter of lacinia bearing scattered fine bristles over much of surface. Mandible with five teeth ( Figs. 15-16 ). Inner margin with a cluster of thick bristles near mid length and a small tuft of ca. 4 fine fringe hairs at base of cluster; basal third of inner margin bare. 2 nd and 4 th teeth with bristle rows terminating at their bases, and additional fine setae located mesally on ventral surface and a few long bristles located basally on outer margin; part of a dorsal row of bristles can also be seen projecting between the 4 th and 5 th teeth in figure 16.

Remarks. Known only from Taiwan.

Figures

Figs. 5-8. Kiotina collaris structures. 5. Male terminalia, dorsal, 6. Male sternum 9, 7. Maleparaproct, lateral. 8, Female abdominal sterna 8-9.

Figs. 9-12. Kiotina collaris eggs. 9. Entire egg, lateral aspect, 10. Chorionic detail with micropyles, 11. Anterior pole with opercular line, 12. Collar.

Figs. 13-16. Kiotina collaris larval mouthparts.13. Lacinia, 14. Lacinial apex, 15. Mandible, 16. Mandibular apex.