Metalibitia,

Coronato-Ribeiro, Amanda & Pinto-Da-Rocha, Ricardo, 2017, Taxonomic revision and cladistic analysis of the genus Metalibitia Roewer, 1912 (Opiliones, Cosmetidae, Cosmetinae), Zootaxa 4291 (2), pp. 201-242: 205

publication ID

https://doi.org/10.11646/zootaxa.4291.2.1

publication LSID

lsid:zoobank.org:pub:3A891AA8-9D85-47AD-9201-A37D24D32717

persistent identifier

http://treatment.plazi.org/id/038787D1-FFE8-FFF7-EDAE-FE00FA1765CC

treatment provided by

Plazi

scientific name

Metalibitia
status

 

Key to males of Metalibitia  species

1. Free tergite III with similar-sized tubercles ( Figs 1View FIGURE 1 D; 2A, B)................................................... 2

- Free tergite III with tubercles of different sizes ( Figs 1View FIGURE 1 B, C; 2D)................................................3

2. Free tergite II with two higher lateral tubercles, three tubercles united at the base to apex on paracheliceral projections ( Fig. 1View FIGURE 1 A), femur IV with retroapical ventral apophysis long and rounded and retrolateral spine on tibia IV ( Figs 5View FIGURE 5 A, E; 7E).................................................................................................. M. adunca  .

- Free tergite II with similar sized tubercles, two tubercles on paracheliceral projections ( Figs 1View FIGURE 1 D; 2A, B) and tibia IV with tubercles and small tubercles ( Figs 7View FIGURE 7 D, H; 8A, F)............................................................ 4

3. Femur IV with one retrolateral rounded tubercle on distal portion higher than the other ones ( Figs 5View FIGURE 5 C, G; 6D, I)..........5

- Femur IV with retrolateral distal tubercles of similar sizes ( Figs 5View FIGURE 5 B, F)................................. M. argentina 

4. Tubercles of coxa II falciform, surpassing the apex of coxa ( Figs 2View FIGURE 2 C, E), retrolateral region of trocanter IV smooth, femur IV straight ( Figs 6View FIGURE 6 C, H, E, J)...............................................................................8

- Tubercles of coxa II straight, not exceeding the apex ( Figs 2View FIGURE 2 A, B), retrolateral region of trocanter IV with one or more tuber- cles, femur IV curved ( Figs 6View FIGURE 6 F, G)........................................................................6

5. Tibia IV with apophyses on ventral region ( Fig. 8View FIGURE 8 I).................................................... M. tibialis 

- Tibia IV with only tubercles ( Fig. 7View FIGURE 7 C)............................................................. M. borellii 

6. Trochanter IV with row of five retroventral tubercles united at base, femur IV with one retroapical tubercle with pointed apex ( Figs 6View FIGURE 6 B, G), tibia IV with prolateral row of tubercles ( Figs 8View FIGURE 8 B, G)................................... M. rosascostai 

- Trochanter IV with group of retroventral tubercles, femur IV with retroapical similar-sized tubercles ( Figs 5View FIGURE 5 D, H; 6A, F), apex of tibia IV with similar-sized of all tubercles ( Figs 7View FIGURE 7 D, H; 8A, F)................................................ 7

7. Pedipalpal femur with six ventral tubercles, three ventroapical tubercles ( Fig. 3View FIGURE 3 C) and median portion of leg trochanter IV with set of five-seven tubercles ( Figs 5View FIGURE 5 D, H)......................................................... M. brasiliensis 

- Pedipalpal femur with nine ventral tubercles, being two of them ventroapical ( Fig. 3View FIGURE 3 D), and distal portion of leg trocanter IV with group of four tubercles ( Figs 6View FIGURE 6 A, F)...................................................... M. paraguayensis 

8. Free tergite III with median tubercles fused and highest, coxa II with retrolateral tubercle ( Fig. 2View FIGURE 2 E)...... M. abuna  sp. nov.

- Free tergite III with central tubercles separated, coxa II only with prolateral tubercle ( Fig. 2View FIGURE 2 C)............. M. santaremis