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red, without any modifications (Fig. 1). Aedeagus — Fig. 35. Length 4.7–5.5 mm. North Vietnam (Tamdao).   P. membranacea L. Medvedev, 2001 5 (4) Apex of elytron without memranaceous stripe. Body red, head, antennae, scutellum and legs black, elytra pale flavous in apical half (Fig. 2), without any modifications. Aedeagus — Fig. 36. Length 5.7 mm. Vietnam (Fanxipan).  P. tricolor L. Medvedev, 2009 6 (1) Prothorax fulvous or red, sometimes blackish on sides. 7 (10) Male without modified area on elytra, mostly slightly depressed along suture. Prothorax with shallow depressions laterally. 8 (9) Elytra fulvous, prothorax dark fulvous and differs well from color of elytra, head piceous to dark fulvous, antennae dark with fulvous base. Antennal segment 3 twice as long as 2. Aedeagus — Fig. 37. Length 5.3–5.8 mm. South Vietnam (Buon Loi).  P. buonloica sp.n. 9 (8) Fulvous, apex of 11 antennal segment and scutellum black, elytra entirely fulvous or with basal margin and inner margin of epipleurae, sometimes also with anterior part of lateral margin black (Fig. 3), metathorax black or reddish brown. 3 antennal segment more than twice as long as 2. Length 4.2–6.6 mm. South Vietnam, Laos, Cambodia, Thailand.  P. scutellaris Kimoto, 1989 10 (7) Other combination of characters. Males with distinctly modified scutellar area. 11 (42) Metasternum black or dark pitchy. 12 (19) Apex of abdomen black. Labrum, antennae except bases, scutellum, tibiae and tarsi black. Elytra fulvous, more or less marked with black on sides. 13 (14) All margins of elytra narrowly margined with black. Fulvous, vertex and epipleurae black. Elytra of male with deep and straight cuneiform grooves behind scutellum, reaching middle of elytra (Fig. 4). Length 5.0 mm. Thailand (Khao Sok).  P. marginata L. Medvedev, 2001 14 (13) Elytra with black stripe on anterior third of lateral margin (Figs 5–6). Vertex not black. Epipleurae black only in anterior half. 15 (16) Elytra without thickened sutural stripe, with impressed groove behind scutellum and parallel to suture, than curved obliquely outwards (Fig. 20). Fulvous, head, basal antennal segment and pygidium except apex red. ABSTRACT. A revision of the genus Paleosepharia from Indochina with a key to species is given. 4 species new for science are described: P. buonloica, P. magna (Vietnam), P. thailandica, P. bifoveolata spp.n. (Thailand).

Revision of the genus Paleosepharia Laboissiere, 1936 (Coleoptera: Chrysomelidae) from Indochina