Trebacosa
Dondale & Redner, 1981
Species Guides
1- Trebacosa marxi(Marx pirate spider)
Trebacosa is a of wolf spiders ( Lycosidae) established by Dondale & Redner in 1981. The genus contains two described with a disjunct distribution: Trebacosa europaea in Hungary and Trebacosa marxi in North America. As a member of Lycosidae, these spiders are ground-dwelling, active hunters that do not build webs to capture prey.
Pronunciation
How to pronounce Trebacosa: /ˌtrɛb.əˈkoʊ.sə/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Trebacosa can be distinguished from other Lycosidae by subtle morphological features of the male and female , though specific diagnostic characters require examination of . The genus is not readily identifiable in the field without microscopic examination. Trebacosa marxi was previously classified in other genera before its transfer to Trebacosa.
Images
Distribution
Disjunct distribution with one in the Palearctic (Hungary) and one in the Nearctic (USA and Canada). Trebacosa europaea is known only from Hungary, while Trebacosa marxi occurs in North America.
Similar Taxa
- Other Lycosidae generaTrebacosa is morphologically similar to other wolf spider and requires examination of reproductive structures for definitive identification.
More Details
Taxonomic history
Trebacosa marxi was originally described as Lycosa marxi by Stone in 1890 and has been transferred between multiple before its placement in Trebacosa. The genus was established relatively recently (1981) and remains poorly studied.
Species rarity
With only two described and limited observation records, Trebacosa appears to be a rare or undercollected . Trebacosa europaea was described as recently as 2007.