The Hawaiian Islands are known to harbour a rich and diverse fauna of troglobionts (obligate subterranean species). To date, 74 obligate cavernicolous arthropod species have been documented from across the main Hawaiian islands, the majority of which were from Hawaiʻi Island, and mostly from lava tubes of Kilauea volcano, the youngest volcano on the island. A recent bioinventory of the Kipuka Kanohina lava tube system on the south-western side of Mauna Loa volcano revealed the existence of previously unknown cave-adapted species. Among them is the first cave-adapted species of the planthopper genus Iolania, Iolania frankanstonei Hoch & Porter sp. nov. Morphological and molecular data suggest that the species is closely related to the epigean (i.e. surface-dwelling) species Iolania perkinsi, which occurs in surface environments on Hawaiʻi Island. Thus, parapatric speciation is assumed, further corroborating the assumption that adaptive shifts are the major evolutionary patterns underlying the evolution of troglobionts on young oceanic islands.

中文翻译：

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来自天堂的黑暗面：夏威夷熔岩管中洞穴飞虱进化的新自然复制（半翅目：萤火虫目：慈溪虫科）

众所周知，夏威夷群岛拥有丰富多样的穴居生物（专性地下物种）动物群。迄今为止，夏威夷主要岛屿上已记录到 74 种专性海绵状节肢动物，其中大部分来自夏威夷岛，并且大部分来自岛上最年轻的火山基拉韦厄火山的熔岩管。最近对莫纳罗亚火山西南侧的 Kipuka Kanohina 熔岩管系统进行的生物清查揭示了以前未知的适应洞穴的物种的存在。其中包括 Iolania 飞虱属第一个适应洞穴的物种 Iolania Frankanstonei Hoch & Porter sp。十一月 形态学和分子数据表明，该物种与表层（即地表栖息）物种 Iolania perkinsi 密切相关，后者出现在夏威夷岛的地表环境中。因此，假设了共生物种形成，进一步证实了这样的假设：适应性转变是年轻海洋岛屿上穴居生物进化的主要进化模式。