Drosophila planitibia,

Magnacca, Karl N., Foote, David & O’Grady, Patrick M., 2008, A review of the endemic Hawaiian Drosophilidae and their host plants, Zootaxa 1728, pp. 1-58: 26

publication ID

http://doi.org/ 10.5281/zenodo.274194

persistent identifier

http://treatment.plazi.org/id/01205760-B930-0B67-FF3B-F8C6FA25FD82

treatment provided by

Plazi

scientific name

Drosophila planitibia
status

 

planitibia  clade

Another relatively small group, with 17 species (13 with host records), the planitibia  clade is also similar to the adiastola  clade in its restricted use of host plants. The group can be divided into the picticornis  , cyrtoloma  , neopicta  , and planitibia  subgroups. The picticornis  group is basal and contains two species, D. picticornis  and D. setosifrons  , that lack the extra crossvein that is characteristic of the remaining species. These taxa are widely divergent and may be relics of a larger clade ( Bonacum, et al., 2005). The sap breeding ecology of D. picticornis  is unique in the planitibia  clade. It is also the only picture wing to be reared from Metrosideros polymorpha  ( Myrtaceae  ), the most abundant tree in Hawai‘i, but one that some suggest is very recently introduced to the islands ( Wright, et al., 2001). Drosophila setosifrons  is a more typical planitibia  species and breeds in Araliaceae  bark, making the reconstruction of ancestral host plant for this group uncertain. The hosts of the remaining species are correlated with the subgroups: the cyrtoloma  and neopicta  subgroups are strictly on Araliaceae  , while the planitibia  subgroup is primarily on Campanulaceae  . Due to their large size, the latter tend to be associated with the larger, arborescent species of Clermontia  and Cyanea  rather than the shrubbier species, such as Cl. parviflora  , that are often more common. In many areas the larger lobelioid species have declined due to damage from feral ungulates and rats ( Pratt & Abbott, 1997).