Pseudoxyelocerus, Nel & Petrulevicius & Henrotay, 2004

Nel, André, Petrulevicius, Julián F. & Henrotay, Michel, 2004, New Early Jurassic sawflies from Luxembourg: the oldest record of Tenthredinoidea (Hymenoptera: “ Symphyta ”), Acta Palaeontologica Polonica 49 (2), pp. 283-288 : 287

Comparison of Pseudoxyelocerus gen. nov. with the other described Xyelotomidae

Xyelotoma is based on a poorly preserved specimen, with the apical half of forewing missing ( Rasnitsyn 1968: text−fig. 34; 1969: fig. 81). It differs from Pseudoxyelocerus gen. nov. and Xyelocerus in its basal part of vein Rs shorter before its fusion with vein M, its cell [1R1] larger, and its cell [1M] shorter.

Pseudoxyela differs from Pseudoxyelocerus gen. nov. and Xyelocerus in the presence of a supplementary vein in cell [3R1], distal of 2r−rs ( Rasnitsyn 1968, 1969).

Undatoma and Liaotoma differ from Pseudoxyelocerus gen. nov. in the vein Sc “not developed, at least not as a longitudinal trunk” ( Rasnitsyn 1977, 1990; Rasnitsyn et al. 1998; Ren et al. 1995: 194, text−fig. 3−69).

Dahurotoma has a vein Sc basally separated from R, distally fused with it, and with a distal Sc1 distinct and perpendicular to R and C, unlike Pseudoxyelocerus gen. nov. ( Rasnitsyn 1990: text−fig. 139). Furthermore, its cell [1M] is smaller and its cell [2Cu] larger than those of Pseudoxyelocerus gen. nov.

Davidsmithia and Leridatoma can be separated from Pseudoxyelocerus gen. nov., basing on absence of a forewing vein Sc and their distinctly longer cell [2Cu].

As they are described after larvae, Vitimilarva and Kuengilarva cannot be compared with Pseudoxyelocerus gen. nov.