Calosoma (Castrida) leleuporum Basilewsky, 1968
Castrida leleuporum Basilewsky, 1968: 200 (type: Santa Cruz island, Cratéres du sommet 650m; Institut royal de Sciences naturelles de Belgique, Bruxelles)
Length 17-21 mm. C. leleuporum seems to represent the first step in the process of adaptation to the environment of the high ground terminal to the Galapagos islands, that means: atrophy of the wings that reach just half of the elytron and accentuation of the curvature of the shoulders.
Its body is ovoid, elongated. The species is easily distinguishes also for the blackish color with very weak greenish reflections, for its larger head and for the sculpture of its elytra raised and regular.
It has been only found in the wetlands of the island Santa Cruz above the 500 m. up to 800 m.
Examined specimens and literature’s data
Ecuador, Galápagos Archipelago: Santa Cruz, entre Cerro Biento et Pontudo 500m., Cratere du sommet 650m. (Basilewsky, 1968: 203), El Puntudo 800 m (AVT)
Notes: Brachypterous. Active specimens were collected under stones at the beginnig of the more humid and warm season, between December and February. Other adult specimens, deeply buried into cells in the ground, were captured in April, uprooting small bushes (Basilewsky, 1968: 200), and Moret (1986:84) notes that in September he found remains only.
The species is named after the spouses Leleup. Narcisse Leleup, entomologist of the IRSAC led the Belgian zoological expedition to the Galapagos islands and Ecuador (1964 – 1965).
Ecuador, Galapagos is., Santa Cruz,
El Puntudo 800m, 19.1.89, Olmi lg. (coll Vigna Taglianti)
Basilewsky, 1968: 201
(dessin de Madame S. Berger)