Ornithoctoninae

Ornithoctoninae is a subfamily of tarantulas found in Southeast Asia. It was first erected in 1895 by Reginald Innes Pocock based on the type specimen Ornithoctonus andersoni. Terrestrial members of this subfamily are often known as earth tigers.

Ornithoctoninae
Cobalt blue tarantula
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Mygalomorphae
Family: Theraphosidae
Subfamily: Ornithoctoninae
Pocock, 1895
Genera

The Ornithoctoninae comprise a theraphosid subfamily, which is widely distributed in Asia from Myanmar to South China in the north and as far as to Halmahera in the Indonesian archipelago in the south, and in all the ranges in between. Most species in the subfamily live fossorially in burrows, though several species live arboreally. They are known as defensive spiders; when disturbed, they quickly retreat into their burrows or dig themselves into the soil. When neither is a possibility, they assume a defensive posture. When provoked, they strike the aggressor repeatedly with the anterior legs; if the aggressor does not retreat, these spiders have been known to bite. Though not deadly, the effects of the venom can be very unpleasant, including pain, swelling, and arthritis-like stiffness in the joints of the extremity affected.

The theraphosid subfamily Ornithoctoninae is defined by a combination of characteristics: Presence of retrolateral scopula of filiform setae on the cheliceral base, a small row of larger filiform paddle setae retrolaterally ventrobasally in connection to the retrolateral cheliceral scopula, and arrangement of stridulatory spines prolaterally on maxilla. The characteristic of retrolateral scopula of filiform setae on the cheliceral base is shared by the African subfamily Harpactirinae, but the Ornithoctoninae can be distinguished from the Harpactirinae by the geographic distribution range and the presence of the other characteristics mentioned, which are lacking in the Harpactirinae.

As pets

Specimens from the genera Haplopelma, Cyriopagopus, and Ornithoctonus are frequently kept as pets. The most commonly kept species are: H. albostriatum, H. hainanum, H. lividum, H. longipes, H. minax, H. schmidti, O. aureotibialis, and C. schioedtei. More species are kept and new species enter the hobby every now and then, but most of this material needs to be properly identified or described.


Genera and species of Ornithoctoninae

A list of known species in the Ornithoctoninae, sorted by genera:

Citharognathus (Pocock, 1895)
Type species: C. hosei

  • Citharognathus hosei (Pocock, 1895) — Borneo
  • Citharognathus tongmianensis (Zhu, Li & Song, 2002) — China

Cyriopagopus (Simon, 1887) [Senior synonym of Melognathus {Chamberlin, 1917}]
Type species: C. paganus

  • Cyriopagopus dromeus (Chamberlin, ) — Philippines
  • Cyriopagopus paganus (Simon, 1887) — Myanmar
  • Cyriopagopus schioedtei (Thorell, 1891) — Malaysia, the Malaysian earth tiger
  • Cyriopagopus thorelli (Simon, 1901) — Malaysia

Haplopelma (Simon, 1892) [Senior synonym of Melopoeus {Pocock, 1895}]
Type species: Haplopelma doriae

Transferred to other genera:
Haplopelma chrysothrix (Schmidt & Samm, 2005) → Ornithoctonus aureotibialis
Haplopelma costale → Ornithoctonus costalis

In synonymy:
Haplopelma huwenum (Wang, Peng & Xie, 1993) = Haplopelma schmidti

  • Haplopelma albostriatum (Simon, 1886) — Myanmar, Thailand, Cambodia, the Thai zebra
  • Haplopelma doriae (Thorell, 1890) — Borneo
  • Haplopelma hainanum (Liang et al., 1999) — China [Hainan Island], the Chinese {Hainan Island} black earth tiger
  • Haplopelma lividum (Smith, 1996) — Myanmar, Thailand, the [Myanmarian] cobalt blue
  • Haplopelma longipes (Von Wirth & Striffler, 2005) — Myanmar, the [Myanmarian] Vietnamese earth tiger
  • Haplopelma minax (Thorell, 1897) — Myanmar, Thailand, the Thai black
  • Haplopelma robustum (Strand, 1907) — Singapore, the Singaporean gold ring black and gray earth tiger
  • Haplopelma salangense (Strand, 1907) — Malaysia
  • Haplopelma schmidti (Von Wirth, 1991) — Vietnam, China, the [Vietnamese] Chinese gold earth tiger
  • Haplopelma vonwirthi (Schmidt, 2005) — Vietnam

Lampropelma (Simon, 1892)
Type species: L. nigerrimum

  • Lampropelma nigerrimum (Simon, 1892) — Indonesia, the Sangihe Island black
  • Lampropelma violaceopes (Abraham, 1924) — Malaysia, Singapore, the Singapore[an] blue

Ornithoctonus (Pocock, 1892)
Type species: O. andersoni

Transferred to other genera:
Ornithoctonus gadgili (Tikader, 1977) → Poecilotheria regalis
Ornithoctonus hainanus → Haplopelma hainanum
Ornithoctonus huwenus (Wang, Peng & Xie, 1993) → Haplopelma schmidti

  • Ornithoctonus andersoni (Pocock, 1892) — Myanmar, the [Myanmarian] Asian mahogany mustard
  • Ornithoctonus aureotibialis (Von Wirth & Striffler, 2005) — Thailand, the Thai gold fringed'
  • Ornithoctonus costalis (Schmidt, 1998) — Thailand

Phormingochilus (Pocock, 1895)
Type species: P. everetti

  • Phormingochilus everetti (Pocock, 1895) — Borneo
  • Phormingochilus fuchsi (Strand, 1906) — Sumatra
  • Phormingochilus tigrinus (Pocock, 1895) — Borneo
gollark: https://en.m.wikipedia.org/wiki/Normal_number
gollark: It's not proven that they're equally distributed.
gollark: For an example of something which is infinite but does *not* contain all possible number strings, think about, I don't know, 0.010110111... (infinite sequence of zeroes and then an increasing number of ones). That doesn't contain all possible number strings because it only contains 0 and 1.
gollark: It actually hasn't been proven to contain any possible number string.
gollark: That sounds more like physics.

References
  • von Wirth, V. & M. Huber (2002): Einige Praxis-Tipps zur Haltung von Haplopelma Arten und anderen Röhren bewohnenden Vogelspinnen. DeArGe Mitteilungen 7(11): 14-23. (German)
  • von Wirth, V. & M. Huber (2003): Earth Tigers – die asiatischen Vogelspinnen der Unterfamilie Ornithoctoninae. DRACO 4(16): 26-36. (German)
  • von Wirth, V. & M. Huber (2004): Housing specimens of Haplopelma and other tube-dwelling tarantulas. BTS Journal 19(4): 107-112.
  • von Wirth, V. & Boris Striffler (2005): Neue Erkenntnisse zur Vogelspinnen – Unterfamilie Ornithoctoninae, mit Beschreibung von Ornithoctonus aureotibialis sp. n. und Haplopelma longipes sp. n. (Araneae, Theraphosidae). Arthropoda 13(2): 2-27. (German)
  • Norman I. Platnick: The World Spider Catalog, American Museum of Natural History.
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