Tetragnatha filigastra Mello-Leitão, 1943: 192 T. tenuissima Notes on slender species of the long-jawed spider genus Tetragnatha (Araneae Tetragnathidae) with description of three new species Castanheira, Pedro De Souza Baptista, Renner Luiz Cerqueira Zootaxa 2020 2020-04-30 4768 1 43 75 Mello-Leitao, 1943 Mello-Leitao 1943 [151,657,153,180] Arachnida Tetragnathidae Tetragnatha Animalia Araneae 29 72 Arthropoda species filigastra  ( Figs 16C, D)      Tetragnatha filigastra Mello-Leitão, 1943: 192, fig. 23 ( Holotypemale immature, wrongly indicated as female adult, from Rio Grande do Sul, Brazil, Pe. B. Rambo coll., deposited in MNRJ 42522, poorly preserved, genital area dissected and abdomen loose, examined).  Notes. Mello-Leitão (1943)described this species as an adult female, despite the large but undeveloped palps and small chelicerae of the immature male holotype( Fig. 16C; Mello Leitão 1943, fig. 23). The elongated and slen- der abdomen with lateral black patches is not enough to correctly ascribe this species to  T. tenuissimaor other slen- der species described in this paper, thus we decided to undermine the validity of this species as a nomen dubium.