Eremocosta formidabilis ( Simon 1879 )

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: 455-456

publication ID

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

publication LSID

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

persistent identifier

http://treatment.plazi.org/id/03CE2E66-5437-FFC5-FF0C-FAF3FC95036D

treatment provided by

Plazi

scientific name

Eremocosta formidabilis ( Simon 1879 )
status

 

Eremocosta formidabilis ( Simon 1879) 

Figs. 1CView FIGURE 1, 2I & JView FIGURE 2, 3CView FIGURE 3, 5CView FIGURE 5

Datames formidabilis Simon 1879: 136  –138, figs. 17–19, 25–26.

Datames affinis Kraepelin 1899  (misidentification in part, see Eremobates affinis ( Kraepelin 1899a)  : 242–243, figs. 20a–b. Datames cfr  . formidabilis Simon 1879  : Kraepelin 1899b: 378.

Eremobates formidabilis ( Simon 1879)  : Banks 1900: 427.

Eremoperna formidabilis ( Simon 1879)  : Roewer 1934: 561, figs. 322b, 323c, 324d. Eremorhax formidabilis ( Simon 1879)  : Muma 1970: 4 –5, figs. 1–2.

Eremopus formidabilis ( Simon 1879)  : Muma 1989: 5.

Eremocosta formidabilis ( Simon 1879)  : Harvey 2002: 451.

Type material. Male type from Guanajuata, México, No. 1805 (Roewer No. 9130), deposited in Muséum National d’Histoire Naturelle, Paris, France. The female and young with the type are not conspecific ( Muma 1970). Muma’s examination of types found a female paratype labeled “Arkansas” in Zoologisches Staatsinstitut und Zoologisches Museum in Hamburg, Germany he thought to be conspecific. The locality is apparently incorrect. If it refers to a locality in the United States then it is unlikely to be the female of E. formidabilis  . The female chelicera is illustrated as fig. 2, p. 13 in Muma (1970) but no description is provided (see Muma 1970, p. 16). It is not a typical Eremocosta  female dentition. We were not able to examine the type of E. formidabilis  but were able to examine males of this species from localities near the type locality: male from San Luis Potosi, México (Texas Tech University) and a male from Durango, México and San Luis Potosi, México (IBUNAM).

Specimens examined. Males (2). MÉXICO: Durango, Ciudad de Durango, DAOAbout DAO, N 24.051000°, W 104.610200°, 1890 m elev., 15 February 2005, no coll. ( IBUNAMAbout IBUNAM CNAN no number)GoogleMaps  ; MÉXICO: San Luis Potosí, Salinas , N 22.627610°, W 101.716498°, 2077 m elev., 20 June 1970, coll. G. Cárlos ( IBUNAMAbout IBUNAM +CNAN- Sol 00006).GoogleMaps 

Diagnosis. E. formidabilis  is easily distinguished from all other Eremocosta  by the location of the VDC which lies proximally instead of distally on the ventral edge of the male fixed finger ( Fig. 1CView FIGURE 1). It is also smaller than others and the dark tips of the pedipalps are also distinctive.

Measurements (n = 2). TL 22.0, 30.0; CL 6.6, 10.0; CH 2.8, 4.7; FNL 0.3, 0.5; FNH 0.3, 0.5; FFH 0.8, 1.3; PL 17.0, 23.0; PT 1.4, 2.7; PMT 5.7, 11.5; LI 11.0, 13.0; LIVAbout LIV 16.5, 16.5; PPLAbout PPL 4.0, 4.3; A/CP 4.2; FNL/FNH 1.0, 1.0; FFH/FNH 2.8, 2.8; FFH/ CH 0.3, 0.3.

Description. Coloration. Overall coloration pale, palpal tarsus, metatarsus, and inner surface of tibia dark brown; LIII and LIVAbout LIV with similar but lighter coloration on tibia-femur joint area; propeltidium coloration pale ( Fig. 5CView FIGURE 5).

Chelicera. Chelicera as in Muma (1970, p. 13, fig. 1–2). VDC proximally located ( Fig. 1CView FIGURE 1). Neither Roewer (1934) nor Muma (1970) mentioned or illustrated this unique position of the VDC. Fixed finger with no median dentition. Movable finger: large MP-three MSM attached to MP; distinct MPL ( Figs. 2I & JView FIGURE 2). Fondal notch narrow, longer than wide ( Fig. 2IView FIGURE 2). Two tiny RFA; fondal teeth I, III, II, IV prolaterally and retrolaterally ( Fig. 3CView FIGURE 3).

Setation. Dorsal setal complex typical tubular; pvd extend to top of fondal tooth I; mpd a proximal patch. A few, tiny, scattered bacilli on coxa of LI. Pedipalps with scattered, long, thin setae, and shorter, thicker setae. Palpal tibia with a series of strong setae basally on the mesal surface. No visible paired setae.

Distribution. This is a Chihuahuan Desert inhabitant whose range includes Guanajuato, San Luis Potosi, and Durango, México.

Discussion. Putnam’s (1883), Roewer’s (1934), and Muma’s (1970) descriptions are adequate. Two tiny RFAAbout RFA in fondal notch ( Fig. 3CView FIGURE 3). Roewer (1934) indicates 4 ctenidia but Muma (1970), in examining the type, found no ctenidia. The two males that we examined had no ctenidia.

DAO

Agriculture and Agri-Food Canada

IBUNAM

Instituto de BiIolog�a, Universidad Nacional Aut�noma de M�xico

LIV

World Museum Liverpool

PPL

Agricultural Development and Advisory Service

RFA

Universidade Federal do Rio de Janeiro

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Solifugae

Family

Eremobatidae

Genus

Eremocosta

Loc

Eremocosta formidabilis ( Simon 1879 )

Cushing, Paula E., Channiago, Felix & Brookhart, Jack O. 2018

2018
Loc

Datames formidabilis

Simon 1879 : 136

Loc

Datames affinis

Kraepelin 1899b : 378

Loc

Eremobates formidabilis (

Banks 1900 : 427

Loc

Eremoperna formidabilis (

Roewer 1934 : 561 Muma 1970 : 4

Loc

Eremopus formidabilis (

Muma 1989 : 5

Loc

Eremocosta formidabilis (

Harvey 2002 : 451