Speciation in Darwin’s darklings: taxonomy and evolution of Stomion beetles in the Galápagos Islands, Ecuador (Insecta: Coleoptera: Tenebrionidae) Author Finston, Terrie L. Author Peck, Stewart B. text Zoological Journal of the Linnean Society 2004 2004-05-31 141 1 135 152 https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2004.00115.x journal article 10.1111/j.1096-3642.2004.00115.x 0024-4082 5429630 STOMION GENOVESA FINSTON & PECK , SP. NOV. Stomion helopoides Waterhouse. Van Dyke, 1953: 74 (from Genovesa Island, a misidentification). Holotype : In CMN collection. Type data: Galápagos Islands , Genovesa Island. Holotype data: Darwin Bay, 26–28.III.92, J. Cook and S. B. Peck, under Cryptocarpus and Bursera litter, 92-68. Paratypes : 99 with same data, and 200 with: Genovesa Island, Prince Phillips Steps, 27.III.92, arid zone, 20 m , Cook and Peck, 92-61. Etymology: The name is a noun used in apposition, and is the name of the island to which the species is restricted. Diagnosis: Length 8–10 mm , width 4–5 mm ; body broad, convex, 2.0¥ longer than wide; striae and intervals of elytra nearly the same height, giving this species an overall smooth surface; pronotum transverse, 1.5¥ wider than long, coarsely, shallowly punctured, widest behind middle, slightly constricted at base; elytral punctures coarse along striae, smaller in intervals; right mandible with well-developed dorsal tooth as in Figure 13 . The etymology of the name comes from the distribution of this species, which is restricted to Genovesa Island. Distribution. Genovesa Island: Darwin Bay and Prince Philip’s Steps. Bionomics. Found in the arid zone, under rocks and in litter of Cryptocarpus shrubs and Bursera trees. Abundant in nesting areas of red-footed boobies. Adults collected from February to June and November. Examined: 341 specimens .