Zethus wileyi

Lopes, Rogério B., Noll, Fernando B. & Stange, Lionel A., 2017, Zethus (Zethus) wileyi (Hymenoptera, Vespidae, Eumeninae), a new species with its own species-group, Zootaxa 4231 (1), pp. 137-144 : 138

Zethus wileyi species-group, new species-group

Diagnosis. Stem of T2 longer than stem of T1; F11 of male falciform, long and sharp; submedian carina present; and complex male genitalia (described below).

Included species. Zethus wileyi Stange , sp. nov.

Systematics. The squared anterior margin of S1 along with rounded aspect of the basal plate of the aedeagus are synapomorphies that support this species as sister group to the Z. hilarianus species-group, while plesiomorphies such as the hirsute ventral surface of the fore femur of the male, slit-shaped propodeal aperture and convergent antero-lateral margin of S1 keep it from being part of the extant species-group.

Remarks. Following Bohart and Stange’s (1965) key, the specimen ( Fig. 1 ) runs to the Z. smithii de Saussure, 1855 species-group, which is now part of the Z. hilarianus de Saussure, 1855 species-group, according to Lopes et al. (2015). However, it does not agree with any of the known species.

Figures

FIGURE 1. Zethus wileyi sp. nov., ♂, holotype. a. Head; b. Habitus. Scale = 1. 0 mm