Drosophila ( Sophophora ) bakoue Tsacas & Lachaise, 1974: 197 Resolving the synonymy and polyphyly of the ‘ Drosophila bakoue species complex’ (Diptera: Drosophilidae: ‘ D. montium species group’) with descriptions of two new species from Madagascar Yassin, Amir Suwalski, Arnaud Raveloson Ravaomanarivo, Lala H. European Journal of Taxonomy 2019 2019-06-18 532 1 26 8BX7G Tsacas & Lachaise, 1974 Tsacas & Lachaise 1974 [441,1147,839,866] Insecta Drosophilidae Drosophila Animalia Diptera 7 8 Arthropoda species bakoue Sophophora   Fig. 2    Drosophila( Sophophora) bakoue Tsacas & Lachaise, 1974: 197.    Diagnosis Male with sex combs on the two first tarsomeres of the foreleg and completely yellow abdominal tergites; surstylus without dorsal tooth-like protuberance.    Type material   Holotype   IVORY COAST• ♂; Lamto; 6°13′ N, 5°02′ W;  22 Dec. 1970; D. Lachaiseleg.; MNHN.    Distribution  Ivory Coast( type), Benin, Cameroon, Congo, Gabon, Malawi, Nigeria, and São ToméIsland (new location).    Remarks   D. bakoueresembles the species of the ‘  D. nikananuspecies complex’ Tsacas & Chassagnard, 1992in males having completely yellow abdominal tergites. However, it differs from the species of the ‘  D. nikananuspecies complex’ in males having sex combs on the two first tarsomeres of the foreleg (the comb is lost or reduced on the second tarsomere in the ‘  D. nikananuspecies complex’) and lacking a dorsal tooth-like protuberance on the surstylus.  Lachaise (1979)attributed a laboratory strain collected from Makoukou ( Gabon) to this species, and showed that it could produce fertile F 1 femalesand sterile F 1 maleswhen its females were crossed with males of the strain of  D. vulcanaof Bock & Wheeler (1972). Rafael (1984)attributed another strain from Kunden ( Cameroon) to  D. bakoueand showed that it could not hybridize with the same strain of  D. vulcanaor with the strain of  D. tsacasiof Bock & Wheeler (1972). Intriguingly, Rafael (1984)pointed out that both the Gabonese and Cameroonian strains of  D. bakoueshowed some differences in body size and pigmentation from the typematerial from Ivory Coast. She also found that the Cameroonian strain hybridized readily with  D. malagassya, though both F1 sexes were sterile. Kopp (2016)analyzed a strain collected from the island of São Toméand attributed to  D. bakoueby J.R. David, and found that it produced sterile F 1 malesand females when crossed with the same strain of  D. tsacasi. Da Lage et al.(2007)analyzed the sequence of the nuclear gene Amyrelfrom a strain collected from Beninand found it to be sister to the strain of  D. tsacasiof Bock & Wheeler (1972). Prigent et al.(2017)partially sequenced the mitochondrial gene COIfrom two specimens from Mount Oku in Cameroonand did not recover such affinity ( Fig. 2). These results suggest that at least two different species may have been attributed to  D. bakoue, from which the strains from Beninand São Toméare closely related to  D. tsacasi, whereas the strains from Gabonand Cameroonare distant. The relation of these species with the true  D. bakouefrom Ivory Coastneeds more investigations. 2269035520 [189,1229,1238,1267] 1970-12-22 MNHN D. Lachaise Ivory Coast 6.2166667 Lamto 1305 -5.0333333 7 8 1 holotype