Ancestral reconstruction in its fullest sense aims to describe the complete evolutionary
history of a lineage. This depends on accurate phylogenies and an understanding of the key …

Patterns of segmentation and tagmosis are reviewed for Chelicerata. Depending on the
outgroup, chelicerate origins are either among taxa with an anterior tagma of six somites, or …

Arachnids and their relatives (Chelicerata) range in body length from tens of centimetres in
horseshoe crabs down to little more than 80–200 μm in several groups of mites. Spiders …

A model based upon mechanics is used in a re-analysis of historical acarine morphological
work augmented by an extra seven zoophagous mesostigmatid species. This review shows …

Neocarus coronatus n. sp., is described from caves and the surrounding epigean habitats
from a karst area of São Desidério county, Bahia state, Brazil. A dissection procedure is …

A new species of Neocarus is described from adult female and male specimens collected
from an epigean and hypogean ferruginous geosystem located in southeast Brazil. The new …

Neocarus jonasi n. sp. is described from three limestone caves of the Bambuí Group
geomophological formation, Minas Gerais state, Brazil, with a combination of a higher …

No living Opilioacarus species have been described from Europe for more than a century
since the first finding and species description in the early twentieth century. Using the …

This paper certifies the presence of the family Opilioacaridae in the Iberian Peninsula. It is
represented by a new species of the Order Opilioacarida, Opilioacarus baeticus, from three …

A new species of opilioacarid mite, Opilioacarus thaleri n. sp., is described from midlevel
elevation close to the seashore in Crete (Greece). It was found on moister sites, under …