Taxonomic revision and cladistic analysis of the genus Metalibitia Roewer, 1912 (Opiliones, Cosmetidae, Cosmetinae)
Coronato-Ribeiro, Amanda
Pinto-Da-Rocha, Ricardo
Zootaxa
2017
4291
2
201
242
7PNXQ
[351,483,439,465]
Arachnida
Cosmetidae
Metalibitia
GBIF
Animalia
Opiliones
4
205
Arthropoda
genus
1. Free tergite III with similar-sized tubercles ( Figs 1D; 2A, B)................................................... 2 - Free tergite III with tubercles of different sizes ( Figs 1B, C; 2D)................................................3 2. Free tergite II with two higher lateral tubercles, three tubercles united at the base to apex on paracheliceral projections ( Fig. 1A), femur IV with retroapical ventral apophysis long and rounded and retrolateral spine on tibia IV ( Figs 5A, E; 7E).................................................................................................. M. adunca. - Free tergite II with similar sized tubercles, two tubercles on paracheliceral projections ( Figs 1D; 2A, B) and tibia IV with tubercles and small tubercles ( Figs 7D, H; 8A, F)............................................................ 4 3. Femur IV with one retrolateral rounded tubercle on distal portion higher than the other ones ( Figs 5C, G; 6D, I)..........5 - Femur IV with retrolateral distal tubercles of similar sizes ( Figs 5B, F)................................. M. argentina 4. Tubercles of coxa II falciform, surpassing the apex of coxa ( Figs 2C, E), retrolateral region of trocanter IV smooth, femur IV straight ( Figs 6C, H, E, J)...............................................................................8 - Tubercles of coxa II straight, not exceeding the apex ( Figs 2A, B), retrolateral region of trocanter IV with one or more tuber- cles, femur IV curved ( Figs 6F, G)........................................................................6 5. Tibia IV with apophyses on ventral region ( Fig. 8I).................................................... M. tibialis - Tibia IV with only tubercles ( Fig. 7C)............................................................. M. borellii 6. Trochanter IV with row of five retroventral tubercles united at base, femur IV with one retroapical tubercle with pointed apex ( Figs 6B, G), tibia IV with prolateral row of tubercles ( Figs 8B, G)................................... M. rosascostai - Trochanter IV with group of retroventral tubercles, femur IV with retroapical similar-sized tubercles ( Figs 5D, H; 6A, F), apex of tibia IV with similar-sized of all tubercles ( Figs 7D, H; 8A, F)................................................ 7 7. Pedipalpal femur with six ventral tubercles, three ventroapical tubercles ( Fig. 3C) and median portion of leg trochanter IV with set of five-seven tubercles ( Figs 5D, H)......................................................... M. brasiliensis - Pedipalpal femur with nine ventral tubercles, being two of them ventroapical ( Fig. 3D), and distal portion of leg trocanter IV with group of four tubercles ( Figs 6A, F)...................................................... M. paraguayensis 8. Free tergite III with median tubercles fused and highest, coxa II with retrolateral tubercle ( Fig. 2E)...... M. abuna sp. nov. - Free tergite III with central tubercles separated, coxa II only with prolateral tubercle ( Fig. 2C)............. M. santaremis