Balta crassivenosa (Bolívar, 1924:328)



Taxonomy & Nomenclature

Synonym/s: Margattea crassivenosa Bolívar, 1924:328 (original combination)


Transferred to the genus Balta by (Roth, 1989:206).


Conservation Status


Last record: 1908

IUCN RedList status: Critically Endangered (Possibly Extinct)



Silhouette Island, Seychelles


Biology & Ecology




Lectotype designated by (Roth, 1991:976). Only known from one or more female specimens, with the male unknown (Ibid.).






Original scientific description: 

Bolívar, Ignacio. (1924). Orthoptera Dictyoptera (Blattidae and Mantidae), and supplement to Gryllidae, of the Seychelles and adjacent islands. Annals and Magazine of Natural History (9) 13(76): 313-359.


Other references:

Gerlach, Justin. (2012). Balta crassivenosa. The IUCN Red List of Threatened Species 2012: e.T199489A2593424. Downloaded on 24 December 2015.

Gerlach, Justin and Haas, F. (2007). The Orthopteroidea of the Seychelles islands. Backhuys Publishers, Leiden.

Gerlach, Justin, Matyot, Pat and Samways, Michael J. (2005). Developing strategies for invertebrate conservation: the case for the Seychelles islands. Phelsuma 13: 9-24.

Gerlach, Justin, Matyot, P. and Saaristo, M. (1997). Silhouette species list. Phelsuma 5(supplement A): 1-42 [18].

Princis. 1969. In Beier [Ed.]. Blattariae: Subordo Epilamproidea. Fam.: Blattellidae. Orthopterorum Catalogus(13):868

Princis, K. (1969). Blattariae: subordo Epilamproidea: Earn.: Blattellidae, pp. 711-1038. In: Beier, M. (ed.). Orthopterorum Catalogus. Pt 13. The Hague: W. Junk.

Roth, Louis M. (1989). The cockroach genus Margattea Shelford, with a new species from the Krakatau Islands, and redescriptions of several species from the Indo-Pacific region. (Dictyoptera: Blattaria: Blattellidae). Proceedings of the Entomological Society of Washington 91: 206-229.

Roth, Louis M. (1991). New combinations, synonymies, redescriptions, and new species of cockroaches, mostly Indo-Australian Blattellidae. Invertebrate Taxonomy 5(5): 953-1021.

Roth, Louis M. and Rivault, Colette. (2002). Cockroaches from Some Islands in the Indian Ocean: La Réunion, Comoro, and Seychelles (Dictyoptera: Blattaria). Transactions of the American Entomological Society 128(1): 43-74.


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