Abstract
Two new species Folsomia aquatica sp. nov. and Folsomia sanjiangensis sp. nov. from north-eastern China are described. F. aquatica was only found in wetlands, it belongs to quadrioculata-group, it can be distinguished from other species in the group by the combination of the following characters: ommatidia absent; microsensillar formula as1,1/1,0,0; VT with 4+4 latero-distal and usually 7 (6–10) posterior chaetae; 1+1 chaeta on anterior side of manubrium. F. sanjiangensis was found in forest and wetlands, it belongs to sensibilis-group and characterized by ommatidia absent; median sensilla on abdomen within p-row of chaetae; fifth segment of abdomen with a pair of leaf-like sensilla on each side; and 3 chaetae on lateral sides of manubrium.
References
Ding, Y. F., Ji, M. & Chen, J. (2006) The Chinese Folsomia with a description of a new species (Collembola: Isotomidae). Zootaxa, 1185, 53–59.
Fjellberg, A. (2007) The collembolan of Fennoscandia and Denmark. Part II: Entomobryomorpha and Symphypleona. Fanna Entomologica Scandinavica, 42, 25–46.
Gao, Y. & Potapov, M. (2009) Checklist of Chinese Isotomidae (Collembola) and a description of a new Subisotoma. Zootaxa, 2242, 55–63.
Ji, M., Ding, Y. & Chen, J. (2007) A new species of Folsomia (Collembola: Isotomidae) from China. Zootaxa, 1527, 59–65.
Potapov, M. (2000) The use of macrochaetotaxy of Palaearctic Folsomia (Collembola: Isotomidae). Pedobiologia, 44, 234–239.
Potapov, M. (2001) Isotomidae. In: Dunger, W. (Ed.) Synopses on Palaearctic Collembola. Vol. 3., Abdhandlungen und Berichte des Naturkunde Görlitz, 73 (2), 1–603.
Potapov, M. & Babenko, A. (2000) Species of the genus Folsomia (Collembola: Isotomidae) of northern Asia. European Journal of Entomology, 97, 51–74.
Potapov, M. & Chimitova, A. (2009) Isotomidae (Collembola) of Buryat Republic. Folsomia culter sp. nov and taxonomic value of terminalian chaetotaxy in the genus. Zootaxa, 2225, 49–56.
Potapov, M. & Culik, M. (2002) A new species of Folsomia (Collembola: Isotomidae) from Brazil,with notes on foil-setae in the fimetaria group. Pan-Pacific Entomologist, 78(2), 69–73.