Eremocosta bajaensis ( Muma 1986 ), Muma, 1986

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: 446-451

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/03CE2E66-5438-FFC0-FF0C-FC78FA25059D

treatment provided by

Plazi

scientific name

Eremocosta bajaensis ( Muma 1986 )
status

 

Eremocosta bajaensis ( Muma 1986)  

Figs. 1A View FIGURE 1 , 2A –D View FIGURE 2 , 3A View FIGURE 3 , 4A View FIGURE 4 , 5A View FIGURE 5

Eremorhax bajaensis Muma 1986: 4   –5, figs. 8–12.

Eremopus bajaensis (Muma 1987)   : Muma 1989: 5.

Eremocosta bajaensis ( Muma 1986)   : Harvey 2002: 451.

Type material. Male holotype from Baja California Norte, México, 2 miles east of Ranch San Salvador along road to Valle Trinidad from Ensenada; 21 June 1973; coll. S.C. Williams & K.B. Blair, SCW # 314(4) ( CAS). Female allotype from 10.2 km north of Santa Maria   , Baja California, México ( CAS). Examined male holotype but was unable to examine female allotype   .

Other specimens examined. Males (11). MÉXICO: Baja California Norte, 2 August 2002, coll. Rcho [sic] & Enriques (2 males: IBUNAM no number)   ; USA: California, Riverside County, Santa Rosa Mountains, Highway 74, 1 mile W Pinyon Pines [fire station], N 33.58947°, W 116.47021°, 4000 m elev., 19 July 2005, coll. Wendell Icenogle, one male (collected near a female) on highway in car headlights at 01:30 hr ( DMNS ZA.36272) GoogleMaps   ; USA: California, San Diego County, Alpine at home, N 32.83505°, W 116.76641°, 579 m elev., 3 July 2001, coll. D. Stokes ( DMNS ZA.15433) GoogleMaps   ; USA: California, San Diego County, Rancho Jamul Ecological Reserve , N 32.683°, W 116.81836°, 249 m elev., 21 July 2005, coll. Dustin A. Woods, pitfall trap ( DMNS ZA.16321) GoogleMaps   ; USA: California, San Diego County, Hollenbeck Canyon Wildlife Area , N 32.728°, W 116.815°, 524 m elev., July 2003, coll. USGS, pitfall trap ( DMNS ZA.16323) GoogleMaps   ; USA: California, San Diego County, Rancho Jamul , N 32.683°, W 116.81836°, 249 m elev., July 2007, coll. USGS (RAJ), pitfall trap ( DMNS ZA.19091) GoogleMaps   ; USA: California, San Diego County, San Diego Wild Animal Park [ San Diego Zoo Safari Park ], N 33.08983°, W 116.98668°, 201 m elev., 9–13 August 2010, coll. USGS, pitfall trap ( DMNS ZA.33088) GoogleMaps   ; USA: California, San Diego County, San Diego Wild Animal Park [ San Diego Zoo Safari Park ], N 33.09153°, W 116.98241°, 20–24 July 2009, coll. USGS, pitfall trap ( DMNS ZA.33089) GoogleMaps   ; USA: California, San Diego County, San Diego National Wildlife Refuge , N 32.72446°, W 116.94318°, 107 m elev., 3–7 August 2009, coll. USGS, pitfall trap (2 males: DMNS ZA.33091). GoogleMaps  

Females (5). MÉXICO: Baja California Norte, 2 August 2002, coll. Rcho [sic] & Enriques ( IBUNAM no number)   ; USA: California, Riverside County, Santa Rosa Mountains, Highway 74, 1 mile W Pinyon Pines [fire station], N 33.58947°, W 116.47021°, 4000 m elev., 19 July 2005, coll. Wendell Icenogle, one female (collected near a male) on highway in car headlights at 01:30 hr ( DMNS ZA.36272) GoogleMaps   ; USA: California, San Diego County, San Diego Wild Animal Park [ San Diego Zoo Safari Park ], N 33.09761°, W 116.98011°, 235 m elev., 12 September –16 January 2011, coll. USGS, pitfall trap ( DMNS ZA.33051) GoogleMaps   ; USA: California, San Diego County, San Diego Wild Animal Park [ San Diego Zoo Safari Park ], N 33.09761°, W 116.98011°, 235 m elev., 17–21 August 2009, coll. USGS, pitfall trap ( DMNS ZA. 33090) GoogleMaps   ; USA: California, San Diego County, Alpine area , N 32.8305°, W 116.76641°, 562 m elev., 15 September 2003, coll. unknown ( DMNS ZA.36271). GoogleMaps  

Diagnosis. Eremocosta bajaensis   male chelicera is similar to that of E. calexicensis   . It is distinguished by the much smaller and more ridge-like (rather than tooth-like) MM of the movable finger of E. bajaensis   (compare Fig. 2A and E View FIGURE 2 ), a short but distinct fondal notch; color pattern of propeltidum (compare Fig. 5A and B View FIGURE 5 ), with E. bajaensis   having a darker anterior edge; and color of appendages. Female genital operculum wings thin and curved ( Fig. 4A View FIGURE 4 ) and very different from that of E. calexicensis   ( Fig. 4B View FIGURE 4 ).

Measurements. Male holotype. TL 21.0; CL 5.5; CH 2.3; FNL 0.3; FNH 0.6; FFH 0.9; PL 19.2; PT 1.8; PMT 7.0; LI 16.0; LIV 25.0; PPL 4.2; A/CP 6.2; FNL/FNH 0.5; FFH/FNH 1.5.

Males (n = 11). TL 27.0–34.0; CL 7.5–9.1; CH 3.4–4.5. FNL 0.3–1.0; FNH 0.4–1.0; FFH 0.8–1.0; PL 21.0– 34.0; PT 1.9–4.0; PMT 4.0–7.9; LI 14.5–23.0; LIV 26.0–37.0; PPL 3.4–5.0; A/CP 5.1–7.3; FNL/FNH 0.5–1.0; FFH/FNH 0.8–2.1; FFH/ CH 0.2–0.3.

Females (n = 5). TL 30.0–40.0; CL 8.9–12.1; CH 5.0–5.0; PL 21.0–30.0; PT 1.4–2.1; PMT 6.4–6.9; LI 18.0– 21.5; LIV 30.0–35.0; PPL 4.9–6.4; A/CP 4.4–5.5.

Description. Male holotype. Coloration. Overall dusky yellow, appendages the same; propeltidium lightly reticulate brownish-violet with dark anterior edge ( Fig. 5A View FIGURE 5 ). Pale oval behind eye tubercle ( Fig. 5A View FIGURE 5 ). No distinct abdominal coloration. Malleoli white.

Chelicera. Male. VDC deep, occupying approximately half the length of fixed finger ( Fig. 1A View FIGURE 1 ), narrower than E. calexicensis   ( Fig. 1B View FIGURE 1 ). Thin, straight fixed finger with no median dentition; movable finger: MP-MSM-MM (a tiny medial tooth or ridge); MPL distinct ( Figs. 2A & B View FIGURE 2 ). Fondal notch short; three RFA; fondal teeth graded II, I, III, IV retrolaterally and I, III, II, IV prolaterally ( Fig. 3A View FIGURE 3 ).

Setation. Male. Typical male setation. Palp with long, thin setae scattered throughout. A pair of long thin setae just proximal to the tibia-femur joint. A few scattered bacilli on the coxa of LII, LIII, and LIV.

Coloration. Female. As in males but slightly lighter.

Chelicera. Female. Fixed finger: FP-2 FSM (posterior being larger)-FM-smaller FSD-FD; Movable finger: MP-2 MSM-MM; MPL distinct ( Fig. 2C & D View FIGURE 2 ). Two RFA proximal to FP; fondal teeth graded II, I, III, tiny IV retrolaterally and I, III, II, IV prolaterally.

Setation. Female. Typical.

Genital Operculum. All of the females examined match Muma’s illustration (1987, p. 25, fig. 12) with long, curved anterior arms widening at the posterior wing ( Fig. 4A View FIGURE 4 ). None had the pits on the anterior arms as illustrated in Muma’s fig. 11.

Distribution. Eremocosta bajaensis   appears to occupy an area extending from coastal southern California west of the Peninsular Ridge into Baja de Norte, México. This is the species identified as E. spinipalpis   by Cushing et al. (2015). A male and female were also collected as far inland as the Santa Rosa Mountains in Riverside County, California. Collections by USGS, San Diego found E. bajaensis   from April to September numbering 6 males and 4 females. Muma’s (1951) list of E. calexicensis   from coastal California, San Diego Co. may have been this species.

CAS

California Academy of Sciences

IBUNAM

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

DMNS

Denver Museum of Nature and Science

USGS

U.S. Geological Survey

LIV

World Museum Liverpool

PPL

Agricultural Development and Advisory Service

MPL

Musee de Port Louis

RFA

Universidade Federal do Rio de Janeiro

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Solifugae

Family

Eremobatidae

Genus

Eremocosta

Loc

Eremocosta bajaensis ( Muma 1986 )

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

Eremorhax bajaensis

Muma 1986 : 4
Loc

Eremopus bajaensis

Muma 1989 : 5
Loc

Eremocosta bajaensis (

Harvey 2002 : 451