Drosophila fastigata Hardy

Lapoint, Richard T., Magnacca, Karl N. & O’Grady, Patrick M., 2009, Review of the spoon tarsus subgroup of Hawaiian Drosophila (Drosophilidae: Diptera), with a description of one new species, Zootaxa 2003, pp. 53-68 : 59

Drosophila fastigata Hardy

Drosophila fastigata Hardy, 1965: 271 –273

Diagnosis. Legs entirely yellow. Apex of the basitarsus extends dorsally into a hatchet shaped lobe with two setae. The second tarsal segment is as long as wide and not concave. Wings hyaline, lacking distinct markings (see Fig. 3 e for example). Thorax brown tinged with yellow, darker dorsally. Scutellum ranges from dark brown to black. Abdominal tergites are brown, except for last tergite which is yellow.

Types. O‘ AHU: Holotype ɗ (BPBM 6529) Pūpūkea, vii.1958, DEH ( Evenhuis 1982).

Material Examined. O‘AHU: 9 ɗ have been studied from the BPBM: ɗ, Poamoho Trail, 1700’, v.1953, DEH; ɗ, Mt. Ka‘ala, iv.1929, EHB; 2 ɗ, Manoa Cliff Trail Trail, ii.2007, KNM; 5 ɗ, Mt. Ka‘ala, 3950’, v.2007, KNM.

Distribution. This species is endemic to the island of O‘ahu.

Ecology. This species has been reared from leaves of Cheirodendron platyphyllum (Araliaceae) ( Heed 1968).

Illustrations. Foreleg ( Hardy 1965: 272, fig. 93a); terminalia, male, lateral ( Hardy 1965: 272, figs. 93b, c).

Discussion. D. fastigata is the only spoon tarsus species endemic to O‘ahu. Due to its morphological similarity to D. atroscutellata , this species is included in this group, but is also considered basal due to the reduced spoon.

Figures

FIGURE 3. Wings of selected species a) D. atroscutellata, b) D. sordidapex, c) D. conformis, d) D. dasycnemia, and e) D. waddingtoni.