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Abstract: Thinodromus(s. str.) excisiussp. n.is described from Pahang State, Malacca Peninsula, Malaysia. The new species belongs to the Thinodromus lunatusgroup widespread in Southeast Asia. Within this group, the species seems to be most similar to Thinodromus(s. str.) cattiensisGildenkov, 2017, Thinodromus(s. str.) spotusGildenkov, 2017, Thinodromus(s. str.) batuensisGildenkov, 2021, and Thinodromus(s. str.) bruneiensisGildenkov, 2021 in the structure of the unpaired anterior shield of the internal sac of the aedeagus but clearly differs from these and from the other species of the lunatusgroup in the structure of the parameres with a characteristic emargination.

Abstract: The type material of three species of the genus CoprophilusLatreille, 1829 was revised, and examination of additional specimens of C. (Zonyptilus) alticolaFauvel, 1904 from Nepal, northern India, and China (Yunnan, Sichuan, and Shaanxi) has shown that C. (Z.) subplagiatusCameron, 1928 and C. (Z.) difformisSmetana, 1998 are junior synonyms of C. (Z.) alticolaFauvel, 1904.

Abstract: A revision of the type material of four species of the genus CoprophilusLatreille, 1829 and a study of additional specimens of Coprophilus(Zonyptilus) reitteriLuze, 1904 from Kazakhstan, Kyrgyzstan, Tajikistan, Pakistan, India, and Nepal show that C. (Z.) burphuensisChampion, 1925, C. (Z.) longicollisCameron, 1941, and C. (Z.) talassicusKastcheev, 2003 (new synonyms)are subjective junior synonyms of C. reitteri.

Abstract: Descriptions of six new species are given: Thinodromus(s. str.) batuensissp. n. from Malaysia (Borneo); Thinodromus(s. str.) bhutaniensissp. n. from Bhutan; Thinodromus(s. str.) bruneiensissp. n. from Brunei; Thinodromus(s. str.) indochinensissp. n. from the former French Indochina; Thinodromus(s. str.) salaengensissp. n. and Thinodromus(s. str.) soppongensissp. n. from Thailand. New records are presented for Thinodromus(s. str.) cattiensisGildenkov, 2017 and Thinodromus(s. str.) deceptor(Sharp, 1889).

Abstract: A new species, Coprophilus(Zonyptilus) turcicussp. n., is described from Georgia and Turkey. Differences of the new species from Coprophilus(Zonyptilus) pennifer(Motschulsky, 1845) and Coprophilus(Zonyptilus) rufipennis(Reitter, 1894) are shown.

The following three new species of the genus ThinodromusKraatz, 1857, all belonging to the Thinodromus(Amisammus) arcuatusgroup, are described: Thinodromus(A.) diancangensissp. n.from Yunnan, Thinodromus(A.) gentlussp. n.from northern India and Nepal, and Thinodromus(A.) smetanaisp. n.from Taiwan.