Quadratum, Huang, Kun-Wei & Wang, Chin-Fah, 2004

Huang, Kun-Wei & Wang, Chin-Fah, 2004, Eriophyoid mites of Taiwan: description of three species of Calacarini from Hueysuen (Acari: Eriophyoidea: Phyllocoptinae), Zootaxa 527, pp. 1-8 : 2

Quadratum gen. nov.

Type species: Quadratum glaberi sp. nov.

Body spindle­shaped, shield lobe present, scapular tubercles and setae absent; leg segments normal, coxae with 3 pair of tubercles and setae, genual seta of leg II missing; empodium simple; opisthosoma differentiated into broader dorsal annuli and narrower ventral annuli, dorsum with median furrow, 2nd ventral tubercles and setae (e) absent; coverflap with longitudinal ridges.

Note: This new genus is close to Parinarus Chandrapatya & Boczek, 2000 differing in the absence of opisthonotal second ventral seta (e) and in the usual dorsal shield rear margin, not projecting mesally over the first five dorsal opisthosomal annuli.

Etymology: Quadratum, Latin , meaning “square”. The genus name is neuter gender, and refers to the rectangular shape of the shield.