Cyriocosmus aueri, Kaderka, 2015

Kaderka, Radan, 2015, The Neotropical genus Cyriocosmus Simon, 1903 and new species from Peru, Brazil and Venezuela (Araneae: Theraphosidae: Theraphosinae), Journal of Natural History 50, pp. 393-465 : 412-418

publication ID	https://doi.org/ 10.1080/00222933.2015.1076082
publication LSID	lsid:zoobank.org:pub:727D9326-42D3-45FF-A593-2EF6A9CE5745
DOI	https://doi.org/10.5281/zenodo.4331340
persistent identifier	https://treatment.plazi.org/id/03A9E109-FF83-2F2B-FE76-BE2CFED6F908
treatment provided by	Carolina
scientific name	Cyriocosmus aueri
status	sp. nov.

Treatment

Cyriocosmus aueri View in CoL sp. nov.

( Figures 7 – 11 View Figure 7 View Figure 8 View Figure 9 View Figure 10 View Figure 11 , 25e, f View Figure 25 , 27c View Figure 27 , 29c View Figure 29 , 31a – d View Figure 31 , 33g, h View Figure 33 , Tables 6, 7)

Types

Male holotype ( NMPC P6 View Materials A-5729) from Peru, Iquitos, at margin of the Amazon River , village of Nuevo Umaral , May 2009, Hans-Werner Auer col .; two female paratypes ( NMPC P6 View Materials A-5730; SMFD), the same locality, date and collector as the holotype (both found in a c. 30 cm long burrow); male paratype ( SMFD) from Peru, Loreto, Rio Tigre, Comunidad Monteverde , 4°14 ʹ 42.95 ʹʹ S, 74°21 ʹ 36.02 ʹʹ W, 2 April 1993, Dr William Lamar col GoogleMaps .; male paratype ( MUSM-ENT 0504033 ) from Peru, Loreto, Rio Tigre, Cocha Shinguito , 5°08 ’ S, 74°45 ʹ W (c. 100 m), 25 May 1990, Diana Silva Dávila col GoogleMaps . GoogleMaps

Etymology

The specific name is a patronym in honour of Hans-Werner Auer, who found all new species here described from Amazon rainforest in the Loreto region, Peru.

Diagnosis

Cyriocosmus aueri sp. nov. can be distinguished from all other congeners, except C. peruvianus sp. nov., C. itayensis sp. nov., C. giganteus sp. nov., C. bertae and C. pribiki , by its uniformly coloured carapace and abdomen and by the short paraembolic apophysis in male palpal bulb. Differs from C. peruvianus sp. nov. and C. itayensis sp. nov. by the different coloration and by the spermathecae with the globular extension of seminal receptacles and convex basal plates, from C. giganteus sp. nov. by the different coloration and the different shape of male palpal bulb having the prolateral superior keel, from C. bertae by the different coloration, by having a smooth prolateral superior keel and of a different shape, from C. pribiki by the different coloration, cymbium without spiniform setae and by the metatarsal flexion between the both tibial apophyses.

Distribution ( Figures 36 View Figure 36 , 37 View Figure 37 )

Known from the type locality, also recorded from Peru, Loreto, Rio Tigre, Monteverde (material examined) and from Peru, Loreto, Pacaya-Samiria National Reserve ( Cavallo 2009) (material not examined) . The region is covered with the Amazon rainforest .

Description

Male (NMPC P6A-5729) ( Figures 10a – e View Figure 10 , 25e, f View Figure 25 , 27c View Figure 27 ): Total length: 19.2, carapace length 9.9, width 8.8, chelicerae with 9 teeth on promargin. Cheliceral teeth pattern from basal end: right side: vVVVV-V-VVV, 1 small and 8 big teeth. Left side: vVVVV-V-VVV, 1 small and 8 big teeth. Anterior eye row slightly procurved, posterior eye row recurved. Eye sizes and interdistances ( Figure 10c View Figure 10 ): AME 0.44 (circular), ALE 0.47 (oval), PME 0.31 (oval

PLE 0.36 (oval), AME – AME 0.13, AME – ALE 0.16, PME – PME 0.78, PME – PLE 0.03, ALE – PLE 0.13, AME – PME 0.05, OQ length 1.33, width 1.72. Clypeus absent. Fovea transverse, straight, width 1.56, 6.74 from anterior edge of carapace. Labium length 1.43, width

1.87, anterior third with 76 cuspules, maxillae with 208 – 210 cuspules in anterior basal half, a few of them extending beyond the half. Sternum length 5.08, width 4.01, three pairs of sternal sigilla located near coxae III (length 0.44, 0.39 from edge of sternum), coxae II (length 0.28, 0.21 from edge of sternum) and coxae I (length 0.21, 0.26 from edge of sternum). Leg pattern: IV>I>II>III. Incrassate leg segments: femur III.

Scopulae: All tarsi 100% densely scopulate, metatarsi I 40%, metatarsi II 50%, metatarsi III 40%, metatarsi IV 20% scopulate. Tarsal scopulae I undivided, in tarsi II divided by longitudinal line of setae, in tarsi III, IV divided by narrow longitudinal band of setae.

Spination: femora I d 0-0-2 (apical), II d 0-0-1 (apical), III d 0-0-1, IV d 0-0-1 and femora of palps d 0-0-2 (apical); patellae I – IV and patellae of palp 0; tibiae I p 0-1-0, r 0-0-1 (apical, near retrolateral tibial apophysis), II v 0-1-2 (apical), p 0-1-1, III v 0-2-2 (apical), p 0-0-1, r 0-1-1, IV v 1-1-2 (apical), p 0-0-1, r 0-1-1 and tibiae of palps p 0-1-0; metatarsi I v 0-0-1 (apical), II v 0-1-2 (apical), p 0-1-0, III v 2-1-2 (apical), p 2-2-1 (apical), r 0-1-1 (apical), IV v 2-2-1-3 (apical), p 0-1-1 (apical), d 0-0-1 (apical), tarsi I – IV and tarsi of palps 0.

Palpal organ as in Figure 25e, f View Figure 25 , embolus with short PA, smooth PS keel is fused with PA. Tegulum with distinct granulated TP, projecting prolaterally. Retrolateral face of cymbium without basal field of spiniform setae. Retrolateral face of palpal tibia with indistinct subapical protuberance covered with cluster of numerous spiniform setae ( Figure 10e View Figure 10 ). Two unequal subapical apophyses are present on tibia I ( Figure 27c View Figure 27 ): a longer retrolateral tibial apophysis with very short, stout spine at apex, a shorter prolateral tibial apophysis with single, well-developed retrolateral basal spine reaching approximately two-thirds of its length. Metatarsus I not sigmoidly curved and without basal or median protuberance on retrolateral face. Metatarsus I flexion is between both tibial apophyses.

Abdomen: urticating setae of type III are located in central glossy patch. PLS: length 4.74, basal segment 1.46, middle segment 1.46, apical segment 1.82, all digitiform. PMS: 0.88.

Coloration and covering setae: dorsal view ( Figure 10a View Figure 10 ): carapace uniformly dark grey, and covered with pale peripheral pubescence, coxae, trochantera and femora dark grey, and covered with long, pale setae, chelicerae dark grey, anteriorly covered with pale pubescence, patellae, tibiae, metatarsi and tarsi light brown, intermixed with long, pale setae. Patellae I, II and palpal patella with two distinct longitudinal stripes without covering setae, patellae III, IV with two unequal diagonal stripes. Palpal femora, femora I, II with single longitudinal stripe, femora III, IV and tibiae II – IV with two such stripes. Abdomen ( Figure 10d View Figure 10 ) covered with short black setae, intermixed with long, pale setae in posterior part, except central light brown glossy patch in shape of heart. Length of central patch: 3.53, width 3.37. Ventral view ( Figure 10b View Figure 10 ): labium, sternum, coxae and trochantera brown, femora dark grey, patellae, tibiae and metatarsi brown. Abdomen ventrally dark grey, without longitudinal band. Spinnerets light brown.

Female (NMPC P6A-5730) ( Figures 7 View Figure 7 , 11a – e View Figure 11 , 29c View Figure 29 ): Total length: 27.3, carapace length 13.1, width 11.6, chelicerae with 9 teeth on promargin. Cheliceral teeth pattern from basal end: right side: VVVVVV-VVV, 9 big teeth. Left side: VVVV-V-VVV, 9 big teeth. Anterior eye row procurved, posterior eye row recurved. Eye sizes and interdistances ( Figure 11c View Figure 11 ): AME 0.53 (circular), ALE 0.60 (oval), PME 0.44 (semicircular), PLE 0.50 (oval), AME – AME 0.22, AME – ALE 0.26, PME – PME 1.09, PME – PLE 0.09, ALE – PLE 0.23, AME – PME 0.08, OQ length 1.12, width 2.34. Ocular tubercle: length 1.77, width 2.34, clypeus absent. Fovea transverse, slightly procurved, width 2.0, 8.9 from anterior edge of carapace. Labium length 1.7, width 2.1, anterior half with 84 cuspules, maxillae with 231 – 243 cuspules. Sternum length 5.9, width 5.4, with three visible pairs of sternal sigilla located near coxae III (length 0.55, 0.52 from edge of sternum), coxae II (length 0.40, 0.47 from edge of sternum) and coxae I (length 0.25, 0.42 from edge of sternum). Leg pattern: IV>I>II>III. All leg segments uniform.

Scopulae: All tarsi 100% densely scopulate, metatarsi I 60%, metatarsi II 50%, metatarsi III 30%, metatarsi IV 15% scopulate. Tarsal scopulae I, II integral, in tarsi III, IV divided by longitudinal band of setae.

Spination: femora I p 0-0-1, II p 0-0-1, III 0, IV 0 and femora of palps 0-0-1; patellae I – IV and patellae of palps 0; tibiae I v 0-0-1 (apical), II v 0-0-2 (apical), III v 0-0-2 (apical), p 1-1- 0, r 1-1-0, IV v 0-(1 – 2)-2 (apical), r 0-(0 – 1)-1 (apical) and tibiae of palps v 0-0-3 (apical); metatarsi I v 0-0-1 (apical), II v 0-(1 – 2)-3 (apical), III v 1-2-3 (apical), p 1-1-2 (apical), r 0-1- 1, IV v 1-2-1-3 (apical), p 0-1-1, r 0-1-1, tarsi I – IV and tarsi of palps 0.

Spermathecae ( Figure 29c View Figure 29 ): two separated spiral seminal receptacles, distally terminated with sclerotized globular extension, basally with well-developed convex sclerotized plates.

Abdomen: urticating setae of type III are located in central glossy patch. PLS: length 7.23, basal segment 2.34, middle segment 2.24, apical segment 2.65, all digitiform. PMS: 1.27.

Coloration and covering setae: dorsal view ( Figures 7 View Figure 7 , 11a View Figure 11 ): carapace uniformly dark grey, and covered with pale peripheral pubescence, coxae, trochantera and femora dark grey, and covered with long, pale setae, chelicerae dark grey, anteriorly covered with pale pubescence, patellae, tibiae, metatarsi and tarsi light brown, intermixed with long, pale setae. Patellae I, II and palpal patellae with two distinct longitudinal stripes without covering setae, patellae III, IV with two unequal diagonal stripes. Tibiae with two parallel longitudinal stripes without covering setae. Palpal femur and femur I prolaterally bare. Abdomen ( Figure 11d View Figure 11 ) covered with short black setae, intermixed with long, pale setae in posterior part, except central light brown glossy patch in shape of heart. Length of central patch: 6.1, width 5.9. Ventral view ( Figure 11b View Figure 11 ): sternum, coxae and trochantera light brown, femora grey, patellae, tibiae, metatarsi and tarsi light brown. Abdomen ventrally dark grey, without longitudinal band ( Figure 11e View Figure 11 ). Spinnerets light brown.

Variability

The variability in morphology of male palpal bulbs is shown on Figure 31a – d View Figure 31 , and in the shape of spermathecae on Figure 33g – h View Figure 33 . The variability in the length of the carapace, the number and the arrangement of the cheliceral teeth, the number of labial and maxillary cuspules, the leg pattern and the spination of tibial apophyses is shown in Table 3.