Matta, Crosby, 1934

Brescovit, Antonio D. & Cizauskas, Igor, 2019, Seven new species of the spider genus Matta Crosby from caves in the State of Minas Gerais, Brazil (Araneae, Tetrablemmidae), Zootaxa 4559 (3), pp. 401-444: 403

publication ID

https://doi.org/10.11646/zootaxa.4559.3.1

publication LSID

lsid:zoobank.org:pub:10CDA291-A32F-4954-9B80-E33579AF46E3

persistent identifier

http://treatment.plazi.org/id/038887C8-E768-FF8F-FF0D-D656FA1F1827

treatment provided by

Plazi

scientific name

Matta
status

 

Key to Brazilian species of Matta 

1. Eyes absent ( Fig. 20AView FIGURE 20, 21CView FIGURE 21)............................................................... M. humrrum  sp. n.

- Eyes present ( Fig. 1AView FIGURE 1, 7AView FIGURE 7).............................................................................. 2

2. Normal eyes ( Fig. 1A, DView FIGURE 1)............................................................................... 3

- Vestigial eyes (Fig. Fig. 7A, DView FIGURE 7)........................................................................... 5

3. Carapace less elongated in the posterior region ( Fig. 2BView FIGURE 2).......................................... M. zuiuda  sp. n.

- Carapace most elongated in the posterior region ( Lehtinen, 1981, fig. 297)........................................ 4

4. Male: rugose ventral face of the palpal tibiae, long embolus; female with triangular DF ( Brescovit, 2005, figs 18-19, 21).......................................................................................... M. angelomachadoi 

- Male: smooth ventral face of the palpal tibiae, shorter embolus; female with conical DF ( Crosby, 1934, fig. 6; Lehtinen, 1981, fig. 310.................................................................................. M. hambletoni 

5. Separate vestigial eyes ( Fig. 7AView FIGURE 7)......................................................................... 6

- Together vestigial eyes ( Fig. 23A, CView FIGURE 23)...................................................................... 7

6. Male: retrolateral projection on leg I with four conspicuous setae in large sockets ( Fig. 7EView FIGURE 7 ̅F); female with oval dorsal fold of the uterus externus ( Fig. 6FView FIGURE 6)............................................................... M. pititinha  sp. n.

- Male: retrolateral projection on leg I on a raised base, with four conspicuous setae in elevated sockets ( Fig 12AView FIGURE 12 ̅D); female with mushroom shape dorsal fold of the uterus externus ( Fig. 10FView FIGURE 10)................................ M. humhum  sp. n.

7. Body slender and long legs in males and females ( Fig. 15A, DView FIGURE 15)................................... M. cambito  sp. n.

- Body truncated and shorter legs in males and females ( Fig. 16A, DView FIGURE 16).............................................. 8

8. Male palp with laminar projection having enlarged base, forming a side flap ( Fig. 24CView FIGURE 24 ̅E); female with diamond piriform dor- sal fold of the uterus externus ( Fig. 22FView FIGURE 22)...................................................... M. nuusga  sp. n.

- Male palp without laminar projection ( Fig. 28AView FIGURE 28 ̅H); female with sclerotized base of the dorsal fold of the uterus externus ( Fig. 26FView FIGURE 26)..................................................................................... M. teteia  sp. n.