Drosophila sordidapex Grimshaw

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 : 65

Drosophila sordidapex Grimshaw

Figure 3 b

Drosophila sordidapex Grimshaw, 1901: 63

Diagnosis. The palpi and mouthparts are light brown. The thorax is yellow to light brown and the legs are completely yellow. The wing posseses a distinct marking that completely darkens the apical half of cell R2+3, the posterior apical margin of cell R1 and anterior apical margin of cell R4+5. Unlike other species, this spot is much darker and is not diffuse, with defined margins (see Fig. 3 b), although in some specimens (including the holotype), it may be distinctly following the veins with a small clear area in the middle of cell R2+3. The abdomen is dark brown to black dorsally with yellow sides except for the completely yellow last tergite.

Types. HAWAI‘I: Holotype ɗ (BMNH) Ōla‘a Forest, vii. 1895. [probably collected by R. C. L. Perkins].

Material Examined. HAWAI‘I: 11 ɗ have been deposited in the BPBM from the following localities: ɗ, Stainback Highway, Tom's Trail, 3200', x.2006, KNM, RTL, GMB; 4 ɗ, Kahuku, Pu‘u Akihi Gulch, i.2006, KNM; ɗ, HAVO escape road, 3900’, vi.2006, KNM; ɗ, Hionamoa Stream, Ka‘ū Forest, x.2006, KNM, RTL, GMB; ɗ, Ōla‘a Forest, x.2006, KNM, RTL, GMB; ɗ, Kukuiopa‘e, South Kona Forest Reserve, x.2006, KNM, RTL, GMB; 2 ɗ, Laupāhoehoe, 3700', x.2006, KNM, RTL, GMB. Over 50 ɗ have been deposited in the UHIM from the following localities: 23 ɗ, Keanakolu, x.1952, DEH; 13 ɗ, Upper Ōla‘a Forest, viii.1952, DEH; 5 ɗ, Upper Ōla‘a Forest, viii.1953, DEH; 5 ɗ, Upper Ōla‘a Forest, vii.1963, WBH; 3 ɗ, Upper Ōla‘a Forest, vii.1964, LHT; 7 ɗ, Upper Ōla‘a Forest, vii.1956 DEH; 4 ɗ, Pu‘u Hualalai, vi.1966, WBH; 3 ɗ, Kaiholeua, Kohala Mountains, viii.1952, DEH; ɗ, Forest above Pa‘auilo, vii.1953, DEH; ɗ, Keauhou Ranch, Kīlauea, vii.1953, DEH; ɗ, Honaunau Forest, vii.1966 KYK. The following material is present at AMNH: ɗ, Neuneu Road, Kaloko Mauka, North Kona, O38.6, 3.vii.1998, PMO, SLM; 5 ɗ, Volcanoes National Park, Ōla‘a Forest, near Pole 44, O117.4, 23.ii.2001, PMO; 2 ɗ, Volcanoes National Park, Ōla‘a Forest, transect 16, O120.2, 25.ii.2001, PMO, DF; ɗ, Volcanoes National Park, Ōla‘a Forest, near Pole 44, O132.8, AMCC 105696, 2.viIi.2001, PMO, CDS; 5 ɗ, Volcanoes National Park, Ōla‘a Forest, near Pole 44, O140.8, AMCC 105684, 12.iv.2002, PMO, CDS. The following material is in the Essig Museum of Entomology at UC Berkeley: ɗ, Volcanoes National Park, Ōla‘a Forest, near pole 48, O247.H; O201459; 6–7.vii.2004, PMO, MG, CDS.

Distribution. This species is endemic to the Big Island of Hawai‘i.

Behavior: Speith (1966: 274).

Ecology. This species has been reared from leaves of Cheirodendron trigynum (Araliaceae) ; leaves of Ilex anomala (Aquifoliaceae) ( Heed 1968).

Illustrations. Morphological structures of this species are depicted in multiple publications including: foreleg ( Hardy 1965: 470, fig. 190a); phallus ( Kaneshiro 1976: 267, fig. 5b); terminalia, male, lateral ( Hardy 1965: 470, fig. 190c); wing ( Hardy 1965: 470, fig. 190b).

Figures

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