Tetraconcha banzyvilliana Griffini, 1909

Massa, Bruno, 2017, Revision of the tropical African genus Tetraconcha (Orthoptera: Tettigoniidae: Phaneropterinae) with the description of ten new species, Journal of Orthoptera Research 26 (2), pp. 211-232 : 215-216

Tetraconcha banzyvilliana Griffini, 1909 Figs 26-27, 67, 79

Griffini, 1909. Ann. Soc. Entom. Belgique 53: 11.

Type locality.

-Banzyville (Zaire = Democratic Republic of Congo) (Museum of Tervuren).

Material examined.

-Tanzania, Urwald Beni IX.X.1910, Grauer (1♀) (NMW); Cameroon (1♂, 1♀) (photos in OSF). Other 6 specimens communicated: Central African Republic, Ubangi, Karawa 1939; Democratic Republic of Congo, Uélé, Lakulu 1928-32; Democratic Republic of Congo, Bambesa X-1933 (2); Democratic Republic of Congo, Kasongo; Uganda, Forêt Semliki P.N.A. (900-1200m) X/XI-1937 (S. Hanot, pers. comm.) (RMCA).

Remarks.

-When Griffini (1909) described T. banzyvilliana on a female, he established to include the species of Tetraconcha with long and thin legs to the subgenus Tellidia . However, only after the description of the genus Tellidia ( Bolívar, 1893), Bolívar (1906) realized that it was synonymous with Tetraconcha , represented by species characterised by very long legs (see Table 2). Thus, the subgenus Tellidia has to be considered definitely synonymous with Tetraconcha . Leroy (1970) cited T. banzyvilliana from Central African Republic.

The stridulatory area is reported in Fig. 26. We know the pattern of the stridulatory file, thanks to the short and interesting note by Leroy (1970) photographing the structure with a SEM; it is curved and characterized by a proximal part with many dense and evenly spaced teeth and a distal part with few widely spaced teeth (Fig. 27), similar to that of T. perezi sp. n. Ratio length/width tegmina in females is 6.5.

Distribution.

-It is known from Tanzania, Uganda, Central African Republic, Democratic Republic of Congo and Cameroon ( Ragge 1967, Leroy 1970, own data).