Sentence:  Phycosecids are small, ovate, convex beetles with a prognathous head, partly covered by a semicircular projection of the pronotum and a dorsal <WSD>vestiture</WSD> of whitish scales or scalelike setae. 
Meaning of the word marked with <WSD> tags:  The hairs of plants, invertebrates and other non-mammalian organisms, taken as a whole.