Thesea spp., SBMNH 422414. A Light microscopy sclerite array, 4× magnification, showing different sclerite forms seen in specimens of Thesea; large, dense sclerites characteristic for members of the genus B 10× magnification, illustrating not only dense sclerite form, but also common spindle form. Very densely warted sclerites range from 317–450 µm, slightly shorter, dense spindles ~220 µm, and those sclerites that are thinner, less warted measure 190–200 µm in length.