Paulianacarus costaricensis sp. n. Adult with cerotegumental layer. SEM. 42 lateral view, notogastral promontories 43 Frontal prodorsum detail promontories 44 epimeral posterior zone 45 notogastral setae and microsculpture, “porose area” 46 depressed area microsculpture, notogastral zone 47 adoral setae, frontal view. Abbreviations: See Material and methods. Scale bars: 42 = 20 μm; 43 = 50 μm; 44 = 20 μm; 45 = 10 μm; 46 = 2 μm; 47 = 10 μm.