Drosophila incognita 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 : 61

Drosophila incognita Hardy

Figure 2 d

Drosophila incognita Hardy, 1965: 319 –320

Diagnosis. The anterioapical portion of the forebasistarus of males have 6 to 8 long setae (see Fig. 2 d). The thorax is dark brown. The apical wing spot is similar to that of D. conformis but darker (see Fig. 3 c for example). The lateral portion of most of the abdomen and the entire final tergite is yellow.

Types. HAWAI‘I: Holotype ɗ (BPBM 6377) Upper Ōla‘a Forest, viii.1952, DEH ( Evenhuis 1982).

Material Examined. HAWAI‘I: ɗ has been studied from the BPBM: Ōla‘a Trail 18, vi.2006, KNM. 6 ɗ have been studied from the UHIM: 2 ɗ, Upper Ōla‘a Forest, vii.1956, DEH; ɗ, Kīlauea, viii.1958, JWB; 2 ɗ, Upper Ōla‘a Forest, viii.1952, DEH; ɗ, Kaiholena, Kohala Mountains, viii.1952, DEH. The following material is present at AMNH: ɗ, Volcanoes National Park, Ōla‘a Forest, near Pole 44, O132.7, AMCC 105701, 2.viIi.2001, PMO, CDS. The following material is in the Essig Museum of Entomology at UC Berkeley: ɗ, Tree Planting Road, O256.8; O201315; 11.vii.2004, PMO, MG.

Illustrations. Morphological structures of this species are depicted in multiple publications including: forleg ( Hardy 1965: 320, fig. 118a); phallus ( Kaneshiro 1976: 267, fig. 5c); terminalia, male, lateral ( Hardy 1965: 320, fig. 118c); wing ( Hardy 1965: 320, fig. 118c)

Discussion. This species is morphologically very close to D. conformis and the defining features are the long setae on the basitarsus.

Figures

FIGURE 2. Fore-legs of selected males a) D. atroscutellata, b) D. dasycnemia, c) D. conformis, d) D. incognita, and e) D. percnosoma.

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