费氏妩牙甲，节肢动物门-昆虫纲-鞘翅目-水龟甲科。Total body length = 3.8–4.0 mm. Oval, strongly convex. Elytra slightly longer than wide. Color. Dorsum black; head, pronotum and often elytra with a subtle green iridescent sheen. Maxillary and labial palps yellow, with apex of maxillary palpomere darkened. Mentum and stipes light to reddish brown, distinctly paler than ventral face of head. Legs, epipleura, lateral margins of prosternum and posterior half of each ventrite pale yellow to brown, with remainder of venter slightly to moderately darker reddish brown. Biology: Found in hygropetric habitats such as wet rock faces.