Tetragnatha Latreille, 1804,

Dimitrov, Dimitar, Álvarez-Padilla, Fernando & Hormiga, Gustavo, 2008, Until dirt do us apart: On the unremarkable palp morphology of the spider Sternospina concretipalpis Schmidt & Krause, 1993, with comments on the genus Prionolaema Simon, 1894 (Araneae, Tetrag, Zootaxa 1698, pp. 49-56: 51-53

publication ID

http://doi.org/ 10.5281/zenodo.180745

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scientific name

Tetragnatha Latreille, 1804


Genus Tetragnatha Latreille, 1804 

Type species: Tetragnatha extensa (Linnaeus, 1758)  Prionolaema Simon, 1894  new synonymy

The genus Prionolaema Simon, 1894  is a junior synonym of Tetragnatha Latreille, 1804  as the only two species in the genus are members of Tetragnatha  . This synonymy has resulted in two new combinations (see below).

Justification of the synonymy: The original description of Prionolaema  is based on a subadult male specimen that, unfortunately, does not allow the examination of palpal morphology. As a result several somatic characters are cited in the diagnosis to differentiate this genus from Tetragnatha  . The first and most important diagnostic character refers to the eye pattern of Prionolaema  which has contiguous lateral eyes. Contiguous lateral eyes, however, are also observed in several Tetragnatha  species. For example, the Hawaiian species Tetragnatha maka Gillespie, 1994  and Tetragnatha kea Gillespie, 1994  have the same eye pattern. The wider than longer labium with laminar portion of Prionolaema  is not different from the morphology of the labium of Tetragnatha  . The same is true for the other characters listed as diagnostic for Prionolaema  such as the long and slender palp and the shape of the abdomen. Many Tetragnatha  species are known to have elongated conical abdomens as the one observed in Prionolaema  . Based on these observations we consider the decision to regard Prionolaema  as a junior synonym of Tetragnatha  fully justified.