Genus DIASPIS Costa, 1828

Genus diagnosis. Body turbinate or subcircular, membranous except for pygidium; prosoma becoming slightly swollen with maturity. Ducts with 2-barred inner ends. Median lobes (L 1), although sometimes close together, never yoked or zygotic; with a pair of setae present between median lobes. Second and third lobes (L 2 and L 3) smaller than L 1, each bilobed; fourth lobes (L 4) reduced; often with a pronounced sclerotized spur in position of each fifth lobe (L 5). Gland spines quite small, present singly as far forward as just lateral to each L 3, more numerous on abdominal segments III and IV; absent from between L 1. Marginal pygidial macroducts usually numbering 6 on each side. Submarginal ducts the same size as marginal macroducts or smaller, number various. Perivulvar pores present in 5 groups.