Trogloconcha, a new genus of larocheine Scissurellidae (Gastropoda: Vetigastropoda) from tropical Indo-Pacific submarine caves
Trogloconcha, a new genus of larocheine Scissurellidae (Gastropoda: Vetigastropoda) from tropical Indo-Pacific submarine caves
复制标题
Trogloconcha，来自印度太平洋热带海底洞穴的 Larocheine Scissurellidae 的一个新属（腹足纲：Vetigastropod）
作者：
T. Kase
本文报道了一个新属-新物种栖息在阴暗到完全黑暗的浅水海底洞穴和深洞穴中，广泛分布于热带到亚热带的东印度洋和西太平洋。T. Ohashii，sp. nov.具有与Larochea不同的乳头状头状触角（Larocheopsis的情况尚不清楚），具有小的鳃盖，并且不显示与Larochea和Larocheopsis不同的壳特征的两性异形。新属包括一个产自日本冲绳的现代种Trogloconcha tesselata，sp. nov.和一个产自法国的晚渐新世种Larocheopsis marshalli Lozouet，1998。
A new genus Trogloconcha is proposed for Trogloconcha ohashii, sp. nov. within the Larocheinae Marshall, 1993, a unique subfamily that lacks an anal slit or foramen among the Scissurellidae (Vetigastropoda). The new species inhabits gloomy to totally dark, shallow-water submarine caves and deep caverns and is distributed widely in the tropical to subtropical eastern Indian and western Pacific oceans. T. ohashii, sp. nov. has papillate cephalic tentacles unlike species of Larochea (the condition is unknown for Larocheopsis), has a small operculum, and does not show sexual dimorphism in shell features unlike species of Larochea and Larocheopsis. One modern species Trogloconcha tesselata, sp. nov. from Okinawa, Japan, and one late Oligocene species Larocheopsis marshalli Lozouet, 1998, from France, both represented by shell alone, are assigned to the new genus.