Revision of the family Carabodidae (Acari: Oribatida) XV. Costacarabodes turrialbai gen. nov., sp. nov. and Tuberocepheus kompsosis sp. nov from Costa Rica

Abstract

Costacarabodes turrialbai gen. nov., sp. nov. and Tuberocepheus kompsosis sp. nov. from Costa Rica are described using optical and scanning electron microscopy. Costacarabodes turrialbai gen. nov., sp. nov. is a new genus with particular characteristics: prodorsum with elevated interlamellar process divided by a deep depression; interlamellar, lamellar, and rostral setae very different in shape and size; eight pairs of notogastral setae; notogaster incompletely surrounded by circumgastric depression interrupting posterior notogastral zone; pedotectum I as normal extending lamina; pedotectum II reduced or absent; tutorium small, aligned dentitions present in inferior zone; epimeral zone with depressions; conspicuous longitudinal medial epimeral depression, demarcated by semicircular cuticular thickening; epimeral formulae 1-1-3-3; epimeral setae 3b, 3c parallel to each other; articulation of genu-tibia III and IV each with dorsal socket.

T. kompsosis sp. nov. is differentiated from T. longus by pusticulate microsculture on ventral zone, humeral apophysis; lateral lamellar zone and epimeral zone; reticulate-foveate microsculpture on area of posterior prodorsal depression; punctate microsculpture on subcapitular zone; simple, setae with small dentitions: notogastral, rostral, interlamellar setae; simples basally inflated a sub-capitular setae; elevated interlamellar process with depressed central area, defining two triangular to polyhedral structures; polyhedral notogastral anterior depression well defined, with posterolateral cuticular ridges; three central notogastral promontories, of which two round to ovoid, and one semicircular; with lateral pairs of promontories (first pair large, oval; second pair medium sized, ovoid). Lateral prodorsum with anterior tutorial depression, well-developed posterior tutorial depression; anal plate with rounded depression anterior to sharp tip