Urobenus Benham, 1886

Decaëns, Thibaud, Bartz, Marie Luise Carolina, Bartz, arolina, Feijoo-Martínez, Alexander, Goulpeau, Arnaud, Lapied, Emmanuel, Marchán, Daniel F., Maggia, Marie-Eugénie, Papuga, Guillaume & James, Samuel W., 2024, Earthworms (Oligochaeta, Clitellata) of the Mitaraka range (French Guiana): commented checklist with description of one genus and eighteen species new to science, Zoosystema 46 (9), pp. 196-244 : 221

Genus Urobenus Benham, 1886

Urobenus Benham, 1886: 82 ; 1890: 255. — Beddard 1895: 661. — Righi 1985: 247.

Anteus – Rosa 1896: 90.

Rhinodrilus – Michaelsen 1900: 430, 1918: 165. — Stephenson 1930: 894. — Cordero 1945: 8. — Righi 1971: 10. — Jamieson 1971: 738.

Rhinodrilus ( Rhinodrilus) – Cognetti de Martiis 1906: 174.

TYPE SPECIES. — Urobenus brasiliensis Benham, 1886 .

DIAGNOSIS. — Setae arranged in eight regular longitudinal lines. One pair of intra-clitellar male pores. Gizzard in VI. Three pairs of calciferous glands in VII-IX, those of VII and VIII wholly or mostly of tubular-paniculated structure, those of IX saccular, with thin wall and wide cavity endowed with irregular and sparse folds. Hearts in VII-XI. Genital apparatus holandric and metagynous. Seminal vesicles short. spermathecae in pre-testicular segments. Ovaries in XIII ( Righi 1985).

DISTRIBUTION. — Urobenus comprises seven valid species (not including the new species described here) distributed in Brazil (6 species) and Venezuela (one species), with Urobenus brasiliensis ( Benham, 1886) also reported from Paraguay (http://taxo.drilobase.org/; Righi 1985; Misirlioğlu et al. 2023; Brown et al. 2023).