Opas

Opas is a genus of long-jawed orb-weavers that was first described by Octavius Pickard-Cambridge in 1896.[2] Though few males have ever been studied, they are much smaller than females. Their pedipalps have a paracymbium, and a conductor that projects from the tegulum, enclosing the embolus.[3] They sit at the center of orb-shaped webs, many attached to low plants. Their webs are relatively flat, though rotated 45 degrees from horizontal.[3] It has previously been synonymized with Leucauge.[4]

Opas
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Tetragnathidae
Genus: Opas
O. Pickard-Cambridge, 1896[1]
Type species
O. lugens
O. Pickard-Cambridge, 1896
Species

6, see text

Species

As of November 2019 it contains six species, including four that were transferred from Mecynometa, found in the lower half of the Americas:[1]

  • Opas caudacuta (Taczanowski, 1873) – Peru, Guyana
  • Opas caudata (Mello-Leitão, 1944) – Brazil
  • Opas lugens O. Pickard-Cambridge, 1896 (type) – Mexico, Panama
  • Opas melanoleuca (Mello-Leitão, 1944) – Brazil
  • Opas paranensis (Mello-Leitão, 1937) – Brazil
  • Opas trilineata (Mello-Leitão, 1940) – Brazil

See also

References
  1. Gloor, Daniel; Nentwig, Wolfgang; Blick, Theo; Kropf, Christian (2019). "Gen. Opas O. Pickard-Cambridge, 1896". World Spider Catalog Version 20.0. Natural History Museum Bern. doi:10.24436/2. Retrieved 2019-12-01.
  2. Pickard-Cambridge, O. (1896), "Arachnida. Araneida", Biologia Centrali-Americana, Zoology
  3. Levi, H. W. (2008). "On the tetragnathid genera Alcimosphenus, Leucauge, Mecynometa and Opas (Araneae, Tetragnathidae)". Journal of Arachnology. 36: 167–169. doi:10.1636/A07-67SC.1. S2CID 85188801.
  4. Levi, H. W. (1980). "The orb-weaver genus Mecynogea, the subfamily Metinae and the genera Pachygnatha, Glenognatha and Azilia of the subfamily Tetragnathinae north of Mexico (Araneae: Araneidae)". Bulletin of the Museum of Comparative Zoology. 149: 23.


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