Eremocosta, Roewer, 1934

Cushing, Paula E., Channiago, Felix & Brookhart, Jack O., 2018, Revision of the camel spider genus Eremocosta Roewer and a description of the female Eremocosta gigas Roewer (Arachnida, Solifugae), Zootaxa 4402 (3), pp. 443-466 : 464

publication ID

https://doi.org/10.11646/zootaxa.4402.3.2

publication LSID

lsid:zoobank.org:pub:50282593-0195-4899-980F-493E062B71B0

DOI

https://doi.org/10.5281/zenodo.5981624

persistent identifier

https://treatment.plazi.org/id/03CE2E66-542E-FFDD-FF0C-FE5CFA200386

treatment provided by

Plazi

scientific name

Eremocosta
status

 

Key to the species of Eremocosta  

1 Fondal notch (male) deep and distinct ( Figs. 2I, K, S View FIGURE 2 )....................................................... 2

- Fondal notch short and/or indistinct ( Figs. 2A, E, O, W View FIGURE 2 )...................................................... 4

2 VDC (male) proximal on ventral edge of fixed finger ( Figs. 1C View FIGURE 1 , 2I, J View FIGURE 2 )................................. E. formidabilis  

- VDC distal on ventral edge of fixed finger................................................................. 3

3 Male fixed finger dagger-like ( Fig. 2K View FIGURE 2 ) with distinct MM and distinct tooth-like MD ( Fig. 2K View FIGURE 2 , arrow). Female genital operculum as in Fig. 4C View FIGURE 4 with wings tear-drop shaped......................................................... E. gigas  

- Fixed finger not dagger-like, MM lacking or greatly reduced and MD present as a ridge ( Fig. 2S View FIGURE 2 , arrow). Female genital operculum with straight, parallel, narrow anterior arms broadening into distinct, rounded club-shaped wings, shaped like hockey sticks ( Fig. 4E View FIGURE 4 )................................................................................ E. striata  

4 Male movable finger with quadrate MD ( Fig. 2O View FIGURE 2 , arrow), female genital operculum as in Fig. 4D View FIGURE 4 with recurved anterior arms and recurved posterior margins................................................................. E. gigasella  

- Movable finger with no MD, female genital operculum not as above............................................. 5

5 Male fixed finger usually as long as or slightly longer than movable finger. Movable finger usually with two small MSM (sometimes only one) ( Fig. 2W View FIGURE 2 ). Lower edge of VDC, when viewed from ectal side of chelicera, slightly concave ( Fig. 2W View FIGURE 2 ). Female genital operculum with long straight anterior arms; posterior wings quadrate as in Fig. 4F. .............. E   View FIGURE 4 . titania

- Fixed finger usually slightly shorter than movable finger. Movable finger usually with just one small MSM ( Figs. 2A, 2E View FIGURE 2 ). Lower edge of VDC, when viewed from ectal side of chelicera, slightly convex ( Figs. 2A, 2E View FIGURE 2 ). Female genital operculum as in Figs. 4A View FIGURE 4 or B........................................................................................ 6

6 Male movable finger with small but distinct MM ( Fig. 2E View FIGURE 2 ). Female genital operculum club-shaped with long anterior arms and a posterior knob, posterior wing ovate as in Fig. 4B............................................... E   View FIGURE 4 . calexicensis

- Movable finger with barely visible MM (sometimes a tiny ridge) ( Fig. 2A View FIGURE 2 ). Wings of genital operculum thin and curved as in Fig. 4A..................................................................................... E   View FIGURE 4 . bajaensis

MSM

Marine Science Museum, Tokai Univ.