Amphinemura coreana Zwick 1973

Murányi, Dávid, 2011, The First Record Of A Far East Stonefly (Plecoptera) From Central Asia, Illiesia 7 (23), pp. 259-263 : 259-261

Amphinemura coreana Zwick 1973

( Figs. 1-4 )

Amphinemura coreana Zwick 1973 — Zwick 1973:157. (description of male and female from People’s Republic of Korea); Zhiltzova 2003:179. (monograph, with the original figures); Teslenko & Zhiltzova 2009:113. (key, with the original figures); Zwick 2010:76 . (additional description of female).

Material examined. PEOPLE’S REPUBLIC OF KOREA: Kanwon Province, Diamond Range, Hotel Go-song , 30.05.1970, leg. S{ndor Mahunka, Henrik Steinmann: holotype ♂, 2♂, 4♀ paratypes ( HNHM) ; Kengi Province, Bagyon Mts., Kaesong, Bagyon Waterfall about 27km SW of the town, 07.06.1970: 1♂ paratype ( HNHM) . KAZAKHSTAN: Almaty Province, Kapchagay, Ili River 20km NNW of the town, 550m, 30.08.1997, leg. Andr {s Orosz: 2♂ ( HNHM) .

Morphology ( Figs. 1-4 ): Habitus of the Kazakh specimens agree with the Korean types, being large and dark nemourids. Their genital organs differ slightly in two aspects: The outer surface of the paraproct median lobe bear more spines than shown for the holotype ( Zwick 1973: Fig. 3 ), and the epiproct has a shorter fold of the lateral arms above the denticulate crest of the ventral sclerite ( Zwick 1973: Fig 4 ). Nevertheless, the paratypes also show some variability in these features, and the small differences of the Kazakh specimens should be regarded as individual variability more than a geographical race.

Geographical distribution and ecology ( Fig. 5 ): The species is known from throughout the Korean Peninsula and the southern part of the Russian Far East ( Teslenko & Zhiltzova 2009, Zwick 2010). It is not yet found in China, despite huge work on Chinese Amphinemura carried out since the description of this species (Du & Wang 2007, Du, Wang & Zhou 2007, Li & Yang 2005, 2006, 2007, 2008a, 2008b, 2008c, 2008d, 2008e, Li, Yang & Sivec 2005, Wang, Du, Sivec & Li 2006, Wang, Zhang & Zhu 2007, Wu 1973, Yang, Li & Sivec 2005, Yang, Li & Zhu 2004, Zhu & Yang 2002, 2003). Due to its seeming absence in China, the occurrence in Kazakhstan was highly unexpected.

Amphinemura coreana is regarded as an inhabitant of submontane rivers and streams ( Zhiltzova 2003), its flight period extends from May to August ( Zhiltzova 2003, Zwick 2010). Its Kazakh habitat is a large river with sandy bottom, flowing through a steppe vegetation on the foothills of the Tien San. The two males were found together with a Nemoura female (probably N. lepnevae Zhiltzova 1971 ). It is worth mentioning that the Trichoptera species collected during the same light trapping resulted in additional unexpected data of species hitherto known exclusively from the Far East ( Wormaldia niiensis , Plectrocnemia wui , Goera japonica , Lepidostoma itoae ); however, they were found together with typical Central Asian species (e.g. Psychomyia usitata Potamyia straminea) (Ol{h 2010).

Figures

Figs. 1-4. Male terminalia of a Kazakh specimen of Amphinemura coreana Zwick 1973. 1: dorsal view; 2: ventral view; 3: lateral view; 4: epiproct, dorsolateral view (scales 1 mm; scale a: Figs.1-3, scale b: Fig. 4).

Fig. 5. Distribution of Amphinemura coreana Zwick 1973 (grey areas are above 2000m).