Mesilla Simon, 1903

Martínez, Leonel, Brescovit, Antonio Domingos & Oliveira, Luiz Fernando M., 2020, Two new species of the ghost spider genus Macrophyes O. Pickard-Cambridge 1893 from Colombia and description of the first male of Mesilla Simon, 1903 (Araneae: Anyphaenidae: Anyphaeninae), Zootaxa 4853 (4), pp. 581-590 : 586

Mesilla Simon, 1903

Mesilla Simon 1903: 30 , type species: M. vittiventris Simon 1903:30 ; Brescovit 1997: 64, figs 146−151.

Diagnosis. Mesilla species are similar to those of Macrophyes species by having elongated and thin body; long and thin legs; median apophysis on anterior side of the tegulum and by having a large retrolateral, marginal tooth on distal side of chelicerae, but can been distinguished by the long and laminar median apophysis; ventral tegular projection absent and long embolus basally inserted on the tegulum ( Figs 3 C−E). Females are characterized by their short copulatory ducts, restricted to the posterior portion of the epigynum and with small, tubular seminal receptacles on medial region; long, wide, divergent lateral borders, with rounded apex ( Brescovit 1992: 12, 13; 1997: figs 150−151; Figs 3G, H ).

Figures

FIGURE 3A-H. Mesilla vittiventris Simon, 1903. Male (ICN-Ar 9696):A habitus, dorsal view; C left palp, retroventral view; D palp, retrolateral view; E palp, ventral view; F leg I, ventral view. Female (ICN-Ar 6271): B habitus, dorsal view; G epigynum, ventral view; H epigynum, dorsal view.Abbreviations:A, atrium; CD, copulatory ducts; E, embolus; FD, fertilization ducts; LB, lateral borders; MA, median apophysis; RTA, retrolateral tibial apophysis; S, spermathecae; SD, spermatic ducts; SR, seminal receptacles; T, tegulum. Scale bars: A, B, F: 2mm; C: 1mm; D: 0.5mm; E–H: 0.2mm.