Togoperla fortunati (Navas)

Stark, Bill P. & Sivec, Ignac, 2008, The Genus Togoperla Klapálek (Plecoptera: Perlidae), Illiesia 4 (20), pp. 208-225 : 212-214

Togoperla fortunati (Navas)

( Figs. 15‐20 )

Paragnetina fortunati Navas, 1926:106 .

Holotype ♂ (MNHN), Kweiyang [Guiyang], Guizhou Province, China

Togoperla grahami Banks :1940:176.

Holotype ♂ (USNM), Lin Ngai Si , near Kuanshien [Guanxian], Sichuan Province, China

Material examined. China: Kwieyang, Kouy‐ Tcheou , Fujian Province, 1906, P.P. Cavalerie and Fortunat, 1 ♂ ( MNHM, T. fortunati holotype) . Sichuan Province, Lin Ngai Si, near Kuanshien , 3500’, 20 September 1930, D.C. Graham, 1 ♂ ( USNM, T. grahami holotype) . Sichuan Province, Emei Shan , 710 m, 20 June 1979, 1 ♂, 1 ♀ ( ZIAS) . Sichuan Province, Won Chuan , August 1938, D.C. Graham, 1 ♀ ( USNM) . Sichuan Province, Kuanshien , 3‐13 July 1937, 1 ♂, 3 ♀ ( MCZ) .

Adult habitus. General color brown to dark brown. Ocellar area covered by dark brown quadrangular spot and area forward of M‐ line with smaller triangular dark area ( Fig. 15 ); occiput pale brown. Pronotum dark brown with scattered rugosities. Wings brown with pale costal area. Femora banded, pale basally and dark apically; tibiae dark brown.

Male. Forewing length 20‐22 mm. T 5 produced into an emarginate lobe; T 6‐9 with large mesal, membranous field covered with fine setae ( Fig. 16 ). Projecting portion of hemitergum about twice as long as basal callus in dorsal aspect, gradually tapered to rounded tip in lateral aspect ( Fig. 18 ). Aedeagus cylindrical, relatively straight and armed with microtrichia and small triangular spines over most of apical half ( Fig. 17 ); apex terminating in a slender cylindrical lobe armed with fine brown setal spines; basolateral lobes absent.

Female. Forewing length 24‐26 mm. Subgenital plate covers most of sternum 9 and is slightly emarginate or entire on posterior margin ( Fig. 19 ). Vagina constricted near midlength; accessory glands less than half as long as vagina ( Fig. 20 ).

Egg. Outline oval. Collar absent. Chorion smooth, similar to T. canilimbata .

Larva. Unknown.

Remarks. This species is known from southwest China, primarily from the T. fortunati and T. grahami

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type series. Sivec et al. (1988) listed it as valid, but erroneously placed T. canilimbata as a synonym; had T. canilimbata and T. fortunati remained synonyms, the former species would have priority. As discussed above under T. canilimbata , these species are now regarded as distinct, primarily due to differences in leg banding patterns and distribution.

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Figures

Figs. 15‐20. Togoperla fortunati. 15. Head and pronotum, 16. Male terminalia, 17. Aedeagus, lateral aspect, 18. Male hemitergum, lateral, 19. Female terminalia, 20. Vagina.