Drosophila (Sophophora) curta Chassagnard & Tsacas, 1997

Yassin, Amir, Suwalski, Arnaud & Raveloson Ravaomanarivo, Lala H., 2019, 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, European Journal of Taxonomy 532, pp. 1-26 : 14-15

Drosophila (Sophophora) curta Chassagnard & Tsacas, 1997

Figs 1–2 , 4 E–F, 5C, 6E–F

Drosophila (Sophophora) curta Chassagnard & Tsacas in Chassagnard et al., 1997: 93 .

Diagnosis

Male and female body pigmentation including halters and legs yellow ( Fig. 4 E–F); male abdominal tergites T2–T4 with a broad black stripes expanding towards the margins, T5 and T6 completely black ( Fig. 4E ); dorsalmost surstylus prensiseta not on the same axis with remaining prensisetae; hypandrial median process truncated and serrated; aedeagus spatulate ( Fig. 5C ); female T2 with a thin black stripe expanding on the middle and fainting towards the margin, T3–T5 with a broad black stripe and an expanding grayish area on the margin ( Fig. 4F ); oviscapt fourth posterior peg-like outer ovisensillum on the same axis with the third and fifth ovisensilla ( Fig. 6C ), with anterior ovisensilla long and thin, almost setiferous ( Fig. 6D ).

Type material

Holotype

MALAWI • ♂; Cape Maclear ; 14°01′ S, 34°51′ E; 30 Mar. 1991; D. Lachaise leg.; MNHN. Other material

MADAGASCAR • 5 ♂♂, 5 ♀♀; Andasibe ; 17°20′ S, 48°54′ E; 16–17 Feb. 2008 (ex-laboratory strain Jul. 2014); J.R. David & A. Yassin leg.; ZUAC .

Description

As in Chassagnard et al. (1997).

Distribution

Malawi (type) and Madagascar (new record).

Remarks

Yassin et al. (2016) included a Kenyan strain of D. curta in their phylogenetic analysis. However, the strain turned out to be a likely new species belonging to the ‘ D. tsacasi species complex’ depicted in Figs 1–2 as D. aff. tsacasi (see below). In Madagascar, D. curta was collected only from Andasibe during the expedition of 2008. Females have two color morphs ( Yassin et al. 2016).

Figures

Fig. 1. Bayesian phylogeny of 19 species from the ‘D. montium species group’ Da Lage, 2007 inferred from complete mitochondrial genomes. Nodes supported by 100% posterior probability (pp) are not labeled, those with pp> 90% or 60% are labeled with gray and white circles, respectively. Species belonging to the ‘D. bocqueti species complex’ and the ‘D. bakoue species complex’ are highlighted in orange and green, respectively. ‘K’ and ‘B’ refer to the strains of D. aff tsacasi Bock & Wheeler, 1972 from Kenya and Bioko Island, respectively.

Fig. 2. Comparison of Bayesian phylogenies of the ‘D. seguyi species subgroup’ Yassin, 2018 inferred from mitochondrial COI (left) and nuclear Amyrel (right) genes. Nodes supported by>95% posterior probability (pp) are labeled with black circles. An asterisk refers to species sequenced here, whereas two asterisks refer to the sequence of D. vulcana Graber, 1957 of Da Lage et al. (2007), which turned out to belong to D. seguyi Smart, 1945 from Kenya (see the text). Note the discrepancy in position of different geographical strains of D. bakoue Tsacas & Lachaise, 1974 (in red) between the two genes. Species belonging to ‘D. bocqueti species complex’ Tsacas & Lachaise, 1974, ‘D. bakoue species complex’ Rafael, 1984, ‘D. nikananu species complex’ Tsacas & Chassagnard, 1992, and ‘D. megapyga species complex’ Lachaise & Tsacas, 2001 are highlighted in orange, green, yellow and red, respectively.

Fig. 4. Adult habitus. A–B. D. seguyi Smart, 1945 (MNHN). A. ♂. B. ♀. C–D. D. malagassya Tsacas & Rafael, 1982 (MNHN). C. ♂. D. ♀. E–F. D. curta Chassagnard & Tsacas, 1997 (MNHN). E. ♂. F. ♀. G–H. D. chocolata Yassin & David sp. nov. (MNHN). G. ♂. H. ♀. Only dark morphs of females of species with female-limited color dimorphism are shown. Scale bar = 1 mm.

Fig. 5. Male terminalia of the ‘D. seguyi species complex’. A. D. seguyi Smart, 1945 (MNHN). B. D. malagassya Tsacas & Rafael, 1982 (MNHN). C. D. curta Chassagnard & Tsacas, 1997 (MNHN). D–F. D. chocolata Yassin & David sp. nov. Scale bars: A–D = 50 µm; E–F = 100 µm..

Fig. 6. Female oviscapts of the ‘D. seguyi species complex’. A–B. D. seguyi Smart, 1945 (MNHN). C–D. D. malagassya Tsacas & Rafael, 1982 (MNHN). E–F. D. curta Chassagnard & Tsacas, 1997 (MNHN). G–H. D. chocolata Yassin & David sp. nov. (MNHN). Scale bars: A, C, E, G = 100 µm; B, D, F, H = 50 µm.