On some new South African spiders of the families Barychelidae
, Dipluridae, Eresidae, Zodariidae, Heracliidae, Urocteidae, Clubionidae.
The brush-footed spider family Barychelidae
is represented worldwide by 44 genera and 300 species, of which four genera and five species--Diplothele walshi O.
The experiment will be repeated with 20 specimens of a closely related group to the Theraphosidae, the Barychelidae
, and examine their defense strategies in order to make an outgroup comparison of the evolution of defense displays in tarantulas.
This characteristic could be interpreted as plesiomorphic if compared with the sister family Barychelidae with 20-80 eggs (Raven 1994).
Mygalomorph spiders of the Barychelidae in Australia and the western Pacific.
Taxonomica Araneae I: Barychelidae
, Theraphosidae, Nemesiidae and Dipluridae (Araneae).
Raven (1985), based on Vellard's description, considered Neostothis a junior synonym of Chaco Tullgren, and transferred the genus from Barychelidae
to Nemesiidae (Pycnothelinae), due to the presence of scopula on tarsi III and IV, wide labium, and absence of third claw.
In order to avoid an excess of missing entries, we preferred used a Barychelidae Simon 1889 rather than a Paratropididae Simon 1889 as the out group, since the last family presents some incomparable characters with Theraphosidae.
This character is widely used to separate Barychelidae from Theraphosidae, the latter presenting the distal article of the PLS digitiform.
Maxillary cuspule microstructure has been studied in Microstigmatidae (Griswold 1985), Barychelidae (Raven 1994) and in the theraphosid Aphonopelma seemanni (F.
Raven (1994) found that maxillary cuspule size is independent on adult size in Barychelidae.
However, these differences in ornamentation are probably also present in Microstigmatidae and Barychelidae considering the figures given by Griswold (1985:6, figs.