|
Zospeum Vasconicum
''Zospeum vasconicum'' is a troglofauna, cave-dwelling species of pulmonate, air-breathing land snails (Eupulmonata, Ellobioidea, Carychiinae). Description It is a very small species with a variable shell height (on average ca. 1.2 mm) and an average shell width of 0.80 – 0.87 mm. The shell is transparent and has an elongate or elongate-conical shape with an entire, roundish and more or less thickened peristome. The peristome is closely adhering to the spire, reflected and takes up ca. 40% of the shell height. The shell has about five convex, regularly coiled whorls, which are more or less strongly shouldered, especially in the more conical shells. The shell shows a deep suture. The opening (aperture) is more or less of a circular shape. This species lacks obvious apertural barriers, but often an obsolete lamella (denticle) in the parieto-columellar corner can be seen. The central column of the shell (columella) possesses a single, low annular lamella.Jochum, A., De Wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troglofauna
Troglofauna are small cave-dwelling animals that have adapted to their dark surroundings. Troglofauna and stygofauna are the two types of subterranean fauna (based on life-history). Both are associated with subterranean environments – troglofauna are associated with caves and spaces above the water table and stygofauna with water. Troglofaunal species include spiders, insects, myriapods and others. Some troglofauna live permanently underground and cannot survive outside the cave environment. Troglofauna adaptations and characteristics include a heightened sense of hearing, touch and smell. Loss of under-used senses is apparent in the lack of pigmentation as well as eyesight in most troglofauna. Troglofauna insects may exhibit a lack of wings and longer appendages. Ecological categories Troglofauna are divided into three main categories based on their ecology: * Troglobionts (or troglobites): species, or populations of species, strictly bound to subterranean habitats. * Troglophi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
