Silvanid Flat Bark Beetles

Figures 1.Habitus of Psammoecus spp. A Psammoecus scitus sp. n., holotype B Psammoecus bipunctatus (Fabricius, 1792) C Psammoecus trimaculatus Motschulsky, 1858 D Psammoecus triguttatus Reitter, 1874, lectotype E Psammoecus labyrinthicus sp. n., holotype. Scale: 1.0 mm.

Figures 6.Psammoecus triguttatus Reitter, 1874, lectotype, male. A Left antenna B head and pronotum of dorsal view C head and pronotum of ventral view D metaventrite E right elytron with rows of punctures and pubescence. Scale: 0.5 mm.

Figures 13.Male genital organs of Psammoecus spp. A–C Psammoecus scitus sp. n., holotype D–F Psammoecus bipunctatus (Fabricius, 1792) G–I Psammoecus trimaculatus Motschulsky, 1858 J–L Psammoecus triguttatus Reitter, 1874, lectotype. A, D, G and J 9th abdominal sternite B, C, E, F, H, I, K and L aedeagus in dorsal (B, E, H and K) and lateral (C, F, I and L). Abbreviations: PH—phallobase; PA—parameres; PE—penis. Scale: 0.5 mm; a for A–C; b for D–F; c for G–I; d for J–L.

Figures 1.Habitus of Psammoecus spp. A Psammoecus scitus sp. n., holotype B Psammoecus bipunctatus (Fabricius, 1792) C Psammoecus trimaculatus Motschulsky, 1858 D Psammoecus triguttatus Reitter, 1874, lectotype E Psammoecus labyrinthicus sp. n., holotype. Scale: 1.0 mm.

Figures 7.Psammoecus labyrinthicus sp. n., holotype, male. A Left antenna B head and pronotum of dorsal view C head and pronotum of ventral view D metaventrite E right elytron with rows of punctures and pubescence. Scale: 0.5 mm.

Figures 14.Male genital organs of Psammoecus spp. A–C Psammoecus labyrinthicus sp. n., holotype D–F Psammoecus boreas sp. n., holotype G–I Psammoecus omotoensis sp. n., holotype J–L Psammoecus simoni Grouvelle, 1892 M–O Psammoecus fasciatus Reitter, 1874, lectotype P–R Psammoecus quadrimaculatus Reitter, 1874, holotype. A, D, G, J, M and P 9th abdominal sternite; B, C, E, F, H, I, K, L, N, O, Q and R aedeagus in dorsal (B, E, H, K, N and Q) and lateral (C, F, I, L, O and R). Scale: 0.5 mm; a for A–C; b for D–F; c for G–I; d for J–L; e for M–O; f for P–R.

Figures 15.The habitat of Psammoecus labyrinthicus sp. n. (A) and Psammoecus simoni Grouvelle, 1892 (B) A Ta, Toyotama-chô, Tsushima Island, Nagasaki Prefecture, Japan B Inamine, Nago City, Okinawa Island, Okinawa Prefecture, Japan.