Redescription of Isotoma grana Lee, Kim & Kim, 1993 and description of a new species of Isotoma Bourlet, 1839 (Collembola: Isotomidae) from Korea

A new species, Isotoma koreana sp. nov. is described. It is most similar to Isotoma pinnata Börner, 1909, I. riparia (Nicolet, 1842) and I. grana Lee, Kim & Kim, 1993, in possessing a middorsal longitudinal band on body. It can be distinguished in having a thin central stripe on dorsal side of body, the structure of manubrial apical spines and body chaetotaxy. Isotoma grana is redescribed here from type material and compared with related species. An indentification key to the Sino-Japanese species of Isotoma Bourlet is provided.

Two new species of Paralimna Loew, 1862 from Sierra Leone (Insecta, Diptera, Ephydridae)

Two new species of Paralimna Loew, 1862 from Sierra Leone are described: Paralimna (Phaiosterna) grisea n. sp. is related to Paralimna (Phaiosterna) bicolor (Macquart, 1851), from which it differs in having the face grayish, with a brown longitudinal, central stripe, 1 conspicuously clearer gray longitudinal medial stripe on the acrostichal area, the hindtibia with 3 anterodorsal setae and for the morphology of male terminalia. P. paralimna subinvisa n. sp. is related to Paralimna (Paralimna) invisa Soika, 1956, from which it differs in having the parafacial with 2 developed setae, the gena-to-eye ratio 0.25-0.26, the stripes of the scutum of equal width, the costal-vein ratio 0.62-0.64, the M-vein ratio 0.44-0.45 and for the morphology of male terminalia.