Chapter 22 Notes: Species and Speciation: Figure WN22.8 - (A) The Drosophila of the Hawaiian islands have radiated into >700 species, with diverse morphology and ecology: (a) Drosophila primaeva; (b) Drosophila pullipes; (c) Drosophila cyrtoloma; (d) Drosophila conspicua; (e) Drosophila crugigera; (f) Drosophila heteroneura; (g) Drosophila grimshawi; (g) Drosophila silvestris.

Figure WN22.8 - (A) The Drosophila of the Hawaiian islands have radiated into >700 species, with diverse morphology and ecology: (a) Drosophila primaeva; (b) Drosophila pullipes; (c) Drosophila cyrtoloma; (d) Drosophila conspicua; (e) Drosophila crugigera; (f) Drosophila heteroneura; (g) Drosophila grimshawi; (g) Drosophila silvestris.

Figure WN22.8. (A) The Drosophila of the Hawaiian islands have radiated into >700 species, with diverse morphology and ecology: (a) Drosophila primaeva; (b) Drosophila pullipes; (c) Drosophila cyrtoloma; (d) Drosophila conspicua; (e) Drosophila crugigera; (f) Drosophila heteroneura; (g) Drosophila grimshawi; (g) Drosophila silvestris. (B) The youngest island, Hawaii, is about 0.5 Myr old, whereas the oldest, Kauai, is about 5.6 Myr old; older islands, now submerged, are found to the northwest. The arrows show the number of founder events required to account for the phylogenetic relationships between the species within 103 species of the picture-winged group of flies. The number of species found on each island is shown in parentheses. (A, Courtesy of Hawaii Biological Survey; B, redrawn from Fig. 3 in Carson 1987 and from Fig. 1 in Carson and Kaneshiro 1976.)

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