Abstract
Bembidion (Peryphanes) sanatum iwanai ssp. n. is described from the solfatara fields of the Mendeleev Volcano (Kuril Archipelago: Kunashir Island). It slightly differs from the nominative subspecies by body proportions, as well as the relatively narrow external intervals of the elytra and their microsculpture, yet showing stable distinctions in endophallus armature (basal part of lamina 1 is rounded, vs. angular in the nominative subspecies) and in the spermatheca duct (5–6 convolutions, vs. 7–8 in the nominative subspecies). Endemism of insects on the island’s large volcanic massifs of Kunashir Island is discussed.
Highlights
The Mendeleev Volcano (889 m a.s.l.) is one of the four active volcanoes on Kunashir Island
In terms of geomorphology and geochemistry, this volcano is the most explored in the Kuril Archipelago (Abdurakhmanov et al, 2004)
It emerged as the result of an eruption in the Middle Pleistocene (200–230 thousand years ago), while its modern looks have become formed due to the relatively recent, Holocene eruptions some 36 and 2.5 thousand years ago (Razjigaeva et al, 2011; Zharkov, 2014)
Summary
The Mendeleev Volcano (889 m a.s.l.) is one of the four active volcanoes on Kunashir Island. In terms of geomorphology and geochemistry, this volcano is the most explored in the Kuril Archipelago (Abdurakhmanov et al, 2004). It emerged as the result of an eruption in the Middle Pleistocene (200–230 thousand years ago), while its modern looks have become formed due to the relatively recent, Holocene eruptions some 36 and 2.5 thousand years ago (Razjigaeva et al, 2011; Zharkov, 2014). A group of solfatara fields confined to the circular cracks of the volcano’s cone was formed in the Late Holocene (Lebedev et al, 1980) These fields remain considerably active even at present, with the temperatures in the solfatara fiends over the period of observations in the 20th century often exceeding 100°С. Initial landscapes are thereby destroyed as the result of these activities, new or modified habitats arising in their stead
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