Generic key of the Subfamily AVICULARIINAE 

( Radan Kaderka )

 Updated: October 2012

The subfamily Aviculariinae is diagnosed by following synapomorphies (RAVEN, 1985): legs weakly spined or aspinose, tarsi as broad as or broader than metatarsi, presence of spinose process between cymbial lobes in males. This subfamily contains arboreal and semiarboreal species with two different types of urticating hairs; with abdominal hairs of the type II (Avicularia, Iridopelma, Pachistopelma and Typhochlaena) and with palpal hairs of the type V (Ephebopus). Some genera of this subfamily, e.g. Psalmopoeus and Tapinauchenius, lack urticating and were transferred to the new subfamily Psalmopoeinae (SAMM & SCHMIDT, 2010).

The key is based on BERTANI, 2012. 

1. Abdominal type II urticating hairs present ........................................................................ 2

    - absent ....................................................................................................................... 5

2. Single tibial apophyses on legs I and II present ................................................. Iridopelma

    - single tibial apophysis present only on leg I or absent .................................................... 3

3. Distal PLS segment short and domed ........................................................ Typhochlaena 

    -  distal PLS segment digitiform ..................................................................................... 4 

4. First eye row straight or slightly procurved ................................................. Pachistopelma 

    -  first eye row procurved ................................................................................ Avicularia

5. Palpal type V urticating hairs present ............................................................. Ephebopus

    - absent ................................................................................. subfamily Psalmopoeinae

 

Notes: 

The genera Avicularia, Iridopelma and Pachistopelma are closely related in phylogeny. The systematic position of Ephebopus was suggested by BERTANI (2012) based upon cladistic analysis, resulting in the clade (Ephebopus-(Psalmopoeus+Tapinauchenius)) but without any synapomorphy.

Bibliography:

Raven Robert J. (1985) The Spider Infraorder Mygalomorphae (Araneae): Cladistics and Systematics. Bulletin of The American Museum of Natural History. Volume 182: 1-180.

 

Samm R., Schmidt G. (2010) Psalmopoeinae subfamilia nov. - eine neue Unterfamilie der Theraphosidae (Araneae). Tarantulas of the World - 142: 35-41.

 

Schmidt G., Rudloff J.-P. (2003) Die Vogelspinnen. Westarp Wissenschaften Hohenwarsleben: 104-114.

 

Bertani R. (2012) Revision, cladistic analysis and biogeography of Typhochlaena C. L. Koch, 1850, Pachistopelma Pocock, 1901 and Iridopelma Pocock, 1901 (Araneae, Theraphosidae, Aviculariinae). ZooKeys, 230: 1-94.