Polyphyly of Lordiphosa and its relationships in Drosophilinae (Diptera: Drosophilidae)

Abstract

Summary The phylogenetic relationships of Lordiphosa and some taxa in Drosophilinae were analysed on the basis of a total of forty‐one selected drosophilid species. These included eighteen species of five Lordiphosa species‐groups as the main target, twenty‐three species representative of the major drosophiline ingroup taxa and four species of Steganinae as outgroup. Sixty‐eight morphological characters of adults were subjected to cladistic analysis. From the results it is concluded that Lordiphosa is polyphyletic; the Lo. tenuicauda species‐group and genus Nesiodrosophila form a single monophyletic group; Lordiphosa proper (i.e. Lordiphosa spp. minus the tenuicauda group) comprises another monophyletic group; within Lordiphosa proper the fenestrarum, nigricolor and denticeps groups are all monophyletic, but monophyly of the miki group is not strongly supported; genera Hirtodrosophila and Scaptomyza and subgenus Sophophora are all monophyletic; and within Drosophilinae, genus Scaptodrosophila is the first to have split from the main lineage, but the branching order of other clades, Chymomyza, Lordiphosa proper, Sophophora, Hirtodrosophila, Nesiodrosophila+ Lo. tenuicauda group, Scaptomyza, Dorsilopha and subgenus Drosophila, remains unresolved. The topology of maximum parsimony cladograms suggests that Lordiphosa proper lies close to Sophophora as proposed previously, although its phylogenetic position could not be determined conclusively. By contrast, bootstrap values tended to contradict another hypothesis that Lordiphosa and Scaptomyza are sister groups.

Does surgical manipulation of Drosophila intromittent organs affect insemination success?

“…Pubescence and most setae (excluding stout ones) are also omitted. The terminological system used by general dipterologists [3,8] is adopted. In (a), each part is highlighted in the same colours as in (b).…”

A New Species Group in the Genus Dichaetophora Duda (Diptera: Drosophilidae) Based on a Phylogenetic Analysis, with Descriptions of Four New Species from China

“…Throckmorton, 1975;Hu and Toda, 2001;Tarrio et al, 2001), and the genera Scaptomyza and Hirtodrosophila. However, the relationship among the three known species groups and the new clade within the genus Dichaetophora was not resolved in the present study.…”

Copulation anatomy of Drosophila melanogaster (Diptera: Drosophilidae): wound-making organs and their possible roles

“…Note that there is considerable confusion regarding genital terminology and the homologies of many genital structures in Drosophila. In this paper, I adopt the terminological system used by general dipterologists (McAlpine 1981;Hu and Toda 2001; Table 2). Despite their importance as model organisms, only a handful of reports have examined the genital coupling of D. melanogaster and related species.…”