Scaphisoma obliquemaculatum Motschulsky, 1863
Scaphisoma obliquemaculatum Motschulsky, 1863: 435 .
Pseudoscaphosoma atrithorax Pic, 1916c: 7, syn. nov.
Scaphosoma rufomaculatum Pic, 1921: 5 .
Scaphosoma luteoapicale Pic, 1923: 17 .
Type localities. Pseudoscaphosoma atrithorax: Indonesia, Kalimantan, Martapura; Scaphisoma luteoapicale: Vietnam, Lac Tho; S. obliquemaculatum: Sri Lanka, Nuwara Eliya; S. rufomaculatum: Indonesia, Sumatra, Padar Mardang .
Type material examined. Pseudoscaphosoma atrithorax: LECTOTYPE (by present designation): ♀, ‘ Martapura S.E. Borneo Doherty 1891 [printed] / type [handwritten by Pic] / TYPE [red, printed] / Ps. n sp. [handwritten by Pic] / atrithorax Pic [handwritten by Pic] / Lectotype Scaphisoma atrithorax (Pic) des. Löbl, 2014’ (MNHN).
Aditional material examined. 2 ♀♀, ‘ Indonesia, E. Kalimantan, ca 55 km W of Balikpapan Pt Fajar Surya Swadaya [area] 01°13.3’S 116°21.0’E, 100m J. Hájek, J. Schneider, P. Votruba leg. 24–25+ 29.XI.2011 / border of Acacia mangium plantation and primary rainforest, stream and waterfall, puddles; individual collecting, + light trap’ (NMPC, MHNG).
Distribution. Indonesia (Kalimantan, Sulawesi, Sumatra, Java, Sumbawa), Malaysia (Sarawak), Mascarene Islands, Sri Lanka, Thailand, and Vietnam.
Comments. Scaphisoma obliquemaculatum was redescribed in LÖBL (1971). In absence of distinctive characters, I place Pseudoscaphosoma atrithorax Pic in synonymy with this widely distributed species. The MNHN houses five additional females identified by Pic as P. atrithorax . They come from Sumatra, Fort de Kock (present Bukittinggi), and were collected in 1926 by E. Jacobson. They are mounted on a single pin and bear a subsequently given red ‘TYPE’ label.