TETRAGNATHINAE (Menge, 1866)

Álvarez-Padilla, Fernando, 2007, Systematics of the spider genus Metabus O. P. - Cambridge, 1899 (Araneoidea: Tetragnathidae) with additions to the tetragnathid fauna of Chile and comments on the phylogeny of Tetragnathidae, Zoological Journal of the Linnean Society 151 (2), pp. 285-335 : 291

TETRAGNATHINAE

Tetragnathinae are represented by Agriognatha , Tetragnatha , Pachygnatha Sundevall, 1823 and Glenognatha Simon, 1887 . The phylogenetic relationships of Agriognatha are either as sister to Tetragnatha or to all other Tetragnathinae . Eight synapomorphies support the monophyly of Agriognatha plus the remaining tetragnathines: male chelicerae enlarged and curving distally more that two times the clypeus width (15-1), the presence of dorsal femoral trichobothria (27-0), enlarged sperm duct (58-1), articulated paracymbium (50-3), loss of epigynum and fertilization ducts (79-1 and 80-1), copulatory openings immersed in a membranous sac (81-2) and epigynal opening spiracleshaped (90-1). Two synapomorphies group Diphya with Tetragnathinae : the cymbium apical margin constricted (38-1) and the paracymbium with a distal sclerotized triangular projection (51-1).