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The earthworm fauna of the Republic of the Union of Myanmar (Burma) is quite well studied due to the studious works of Gordon E. Gates. However, after the publication of the comprehensive monograph Burmese earthworms (Gates 1972) there has been no new data published from this country. In the last year the last author collected several earthworm samples from Burma, resulting in 7 species records belonging to the families Moniligastridae, Benhamiidae, Octochaetidae and Megascolecidae including some little known species like Tonoscolex depressus (Gates, 1929) and Eutyphoeus constrictus Gates, 1929. Examination of the E. constrictus specimens revealed that they show different states of metandry, they are morphologically very similar to E. hastatus Gates, 1929, and only differ by the functionality of the testes in segment 10, therefore it should be regarded as a synonym of E. constrictus.

The earthworm fauna of the Republic of the Union of Myanmar (Burma) is quite well studied due to the studious works of Gordon E. Gates. However, after the publication of the comprehensive monograph Burmese earthworms (Gates 1972) there has been no new data published from this country. In the last year the last author collected several earthworm samples from Burma, resulting in 7 species records belonging to the families Moniligastridae, Benhamiidae, Octochaetidae and Megascolecidae including some little known species like Tonoscolex depressus (Gates, 1929) and Eutyphoeus constrictus Gates, 1929. Examination of the E. constrictus specimens revealed that they show different states of metandry, they are morphologically very similar to E. hastatus Gates, 1929, and only differ by the functionality of the testes in segment 10, therefore it should be regarded as a synonym of E. constrictus. [ABSTRACT FROM AUTHOR]