Stomion helopoides

Finston, Terrie L. & Peck, Stewart B., 2004, Speciation in Darwin’s darklings: taxonomy and evolution of Stomion beetles in the Galápagos Islands, Ecuador (Insecta: Coleoptera: Tenebrionidae), Zoological Journal of the Linnean Society 141 (1), pp. 135-152 : 146

publication ID

https://doi.org/ 10.1111/j.1096-3642.2004.00115.x

persistent identifier

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scientific name

Stomion helopoides
status

 

STOMION HELOPOIDES GR WATERHOUSE

Stomion helopoides Waterhouse, 1845: 30 . Type locality: San Cristóbal Island. Lectotype here designated with our red rectangular label, in BNHM: female from syntype series of two specimens; segments 5–11 missing from left antenna, apical segment of left metatarsus missing; round label with blue edge: syntype; round label: Type; rectangular label: Waterhouse type; folded label: Stomion helopoides ; Galápagos Islands. A third syntype not seen, possibly lost. Waterhouse 1877: 82. Howard 1889: 192. Linell 1898: 263. Mutchler 1925: 236. Blair 1933: 477. Van Dyke 1953: 73. Franz 1985: 93.

Stomion helopioides Linell 1898: 263 (misspelling).

Diagnosis: Length 9–10 mm, width 4–5 mm; body large, broad, 2.0¥ longer than wide, densely punctured but with overall surface smooth; pronotum transverse, 1.5–1.6¥ wider than long, apex deeply concave, broadest at middle, distinctly narrowed at base, punctures coarse, sparse on disc; elytra evenly punctured throughout, striae barely impressed; dorsal tooth on right mandible absent.

Distribution: San Cristóbal Island: various sites around Baquerizo Moreno (Wreck Bay), playa north of Punta Lido, Playa Lobos, Playa at Bahia Rosa Blanca.

Bionomics: In littoral and arid zones, from sea level to 10 m elevation, on beach sand and ash substrates, under litter of beach plants and at sea lion dung. Adults collected January, February and May. Examined: 177 specimens.

Blair KG. 1933. Further Coleoptera from the Galapagos Archipelago. Annals and Magazine of Natural History Series 10: 471: 487.

Franz H. 1985. Beitrag zur Kenntnis der Koleopterenfauna der Galapagos-Inseln. Situngsberichte der Osterreichischen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Abteilung 194: 73 - 124.

Howard LO. 1889. Scientific results of explorations by Steamer Albatross, 5. Annotated catalogue of the insects collected in 1887 - ' 88. Proceedings of the United States National Museum 12: 185 - 216.

Linell ML. 1898. On the coleopterous insects of the Galapagos Islands. Proceedings of the United States National Museum 21: 249 - 268.

Mutchler AJ. 1925. Coleoptera of the Williams Galapagos Expedition. Zoologica 5: 219 - 240.

Van Dyke EC. 1953. The Coleoptera of the Galapagos Islands. Occasional Papers of the California Academy of Sciences 22: 1 - 181.

Waterhouse GR. 1845. Descriptions of coleopterous insects collected by Charles Darwin Esq., in the Galapagos Islands. Annals of Natural History 16: 19 - 41.

Waterhouse C. 1877. Coleoptera. In Gunther, A. Account of the zoological collection made during the visit of the H. M. S. ' Peterel' to the Galapagos Islands. VII. Proceedings of the Zoological Society of London 1877: 77 - 82.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Tenebrionidae

Genus

Stomion