Gamasitus Womersley

Castilho, Raphael C., Silva, Edmilson S., De, Gilberto J. & Halliday, Bruce, 2016, Catalogue of the family Ologamasidae Ryke (Acari: Mesostigmata), Zootaxa 4197 (1), pp. 1-147 : 14

Gamasitus Womersley (1 described species)

Movable and fixed cheliceral digits with 4–5 and five teeth, respectively. Epistome with an anteromedian extension wider at base, flanked by a pair of large anterolateral spines, shorter than anteromedian extension. Seta h 3 about in longitudinal line with h 1 and posterior and mediad to h 2. Idiosoma suboval, 940 µm long and 650 µm wide at widest level. Podonotal and opisthonotal shields fused, forming holonotal shield. Dorsal idiosomal setae aciculate. Number and length of dorsal idiosomal setae unknown. Holonotal and ventrianal shields not fused. With a pair of lobes in pre-sternal region fused to anterior margin of sternal shield. Sternal shield fused to endopodal shield near coxa IV; seta st 2 mediad to imaginary line between st 1, st 3 and st 4, with st 3 posterior to st 2. Opisthogaster without platelets between genital and ventrianal shields; with five pairs of setae on ventrianal shield and without setae on soft integument around ventrianal shield; post-anal seta shorter than para-anal seta. Peritreme with straight or smoothly curved margins, extending anteriorly to level of coxa I. Peritrematal shield not fused posteriorly to exopodal shield near coxa IV. Exopodal shields near coxae II–III–III fused. Without distinct metapodal platelets. All legs with pretarsi, pre-tarsus I pedunculate, similar in size to other pre-tarsi. Genua I, III and IV and tibia IV with 13, 8, 9 and 10 setae, respectively.