FIGURE 4 in Description of the first cryptobranch onchidoridid Onchimira cavifera gen. et sp. nov., and of three new species of the genera Adalaria Bergh, 1879 and Onchidoris Blainville, 1816 (Nudibranchia: Onchidorididae) from Kamchatka waters

FIGURE 4. Radulae of representatives of the genera Onchimira gen. nov., Calycidoris Abraham, 1876, and Acanthodoris Gray, 1850, scanning electron micrographs. A–C, Onchimira cavifera gen. et sp. nov., paratype ZMMU Lc-37450, living specimen, 20 mm length; A. Rows toward anterior radula end; B. Enlarged, showing distinct rows of the small outer lateral teeth; C. Enlarged cusp of two first laterals showing indistinct denticles on the lower tooth; D–E, Acanthodoris uchidai Baba, 1935, preserved specimen, 18 mm length, Kurile Islands, Paramushir Id., depth 20 m; D. Middle rows; E. Details of the first lateral tooth cusp and outer laterals; F. Onchimira cavifera gen. et sp. nov., paratype ZMMU Lc-37447, living specimen, 18 mm length, three middle rows showing outer laterals; G–I, Calycidoris guentheri Abraham, 1876, ZIN N 40, preserved specimen, 23 mm length; G. Part of the radula; H. Enlarged two first lateral teeth from the middle rows; I. Part of the radula; J–K, Onchimira cavifera gen. et sp. nov., paratype ZMMU Lc-37447, living specimen, 15 mm length; J. Isolated penis; K. Close up of the terminal everted part. Scale bars: A―100 μm, B―50 μm, C―20 μm, D―300 μm, E―100 μm, F―50 μm, G―200 μm, H―100 μm, I―100 μm, J―200 μm, K―50 μm. Photos: Alexander Martynov.