Cyriocosmus hoeferi Kaderka 2015, sp. nov.
Creators: name: Kaderka, Radan
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theraphosidae
Cyriocosmus
Cyriocosmus hoeferi

description: Cyriocosmus hoeferi sp. nov.
(Figures 12 – 14, 26e – h, 28a, 29d, Tables 8, 9)
Types
Male holotype (INPA 8803, formerly SMNK-ARA 0956) from Brazil, Manaus, Reserva Florestal Ducke, 42°55 ʹ 40 ʹʹ S, 59°58 ʹ 10 ʹʹ W, 18 March 1992, Hubert Höfer and Thierry Gasnier col.; one female paratype (SMFD) and one male paratype (SMFD) from Brazil, Amazonas, Manaus, Rio Tarumã, 2 km from the confluence with Rio Negro, 3°01 ʹ 10.4 ʹʹ S, 60°06 ʹ 33.6 ʹʹ W, June 1995, N. C. Gordon & R. C. West col. (found in fossorial retreats at base of rotting mossy stump in primary tropical forest).
Etymology
The specific name is a patronym in honour of Dr Hubert Höfer, who found and photographed this new species in the Amazon rainforest near Manaus, Brazil.
Diagnosis
Cyriocosmus hoeferi sp. nov. can be distinguished from all other congeners by its black carapace with two lateral whitish stripes, abdomen with four lateral stripes, joined neither basally nor apically with urticating setae patch, and by the short and wide paraembolic apophysis in male palpal bulb. The spermathecae are without sclerotized basal plates, both spiral necks are basally almost joined.
Distribution (Figures 36, 38)
Known only from the two localities in the Central Brazilian Amazon. The region is originally covered with lowland rainforest.
Description
Male (SMNK-ARA 0956) (Figures 12a, 13, 26g, h, 28a): Total length: 10.3, carapace length 5.4, width 4.6, chelicerae with 8 teeth on promargin. Cheliceral teeth pattern from basal end: right side: vVvv-v-VVV, 4 small and 4 big teeth. Left side: vVvv-v-VVV, 4 small and 4 big teeth. Anterior eye row procurved, posterior eye row recurved. Eye sizes and interdistances (Figure 13f): AME 0.27 (circular), ALE 0.25 (oval), PME 0.16, PLE 0.16 (oval), AME – AME 0.06, AME – ALE 0.05, PME – PME 0.44, PME – PLE 0.03, ALE – PLE 0.11, AME – PME 0.05, OQ length 0.455, width 0.923. Ocular tubercle: length 0.728, width 0.923. Clypeus absent. Fovea transverse, straight, width 0.34, 3.56 from anterior edge of carapace. Labium length 0.62, width 1.09, anterior quarter with 43 cuspules, maxillae with 108 – 113 cuspules in anterior basal half, a few of them extending beyond the half. Sternum length 2.69, width 2.26, three pairs of sternal sigilla located near coxae III (length 0.19, 0.13 from edge of sternum), coxae II and coxae I. Leg pattern: IV>I>II>III. Incrassate leg segments: femur III.
Scopulae: All tarsi 100% densely scopulate, metatarsi I, II 50%, metatarsi III 40%, metatarsi IV 20% scopulate. Tarsal scopulae I integral, in tarsi II, III divided by longitudinal line of setae, in tarsi IV divided by narrow longitudinal band of setae.
Spination: femora I d 0-0-1, II 0, III d 0-0-1, IV 0 and femora of palp 0; patellae I – IV and patellae of palp 0; tibiae I v 1-0-0, r 0-0-1 (apical), II v 3-0-2 (apical), p 0-1-0, III v 0-2-2 (apical), p 0-1-0, r 0-1-0, IV v 0-2-2 (apical), p 0-1-0, r 0-0-1 and tibiae of palps 0; metatarsi I v 0-0-1 (apical), II v 0-1-1 (apical), III v 0-1-2 (apical), p 1-1-1, r 0-1-1, IV v 1-2-3 (apical), d 0-2-2, tarsi I – IV and tarsi of palps 0.
Palpal organ as in Figure 26g, h, embolus with short triangular PA reaching approximately half of embolus, smooth triangular PS keel is fused with PA. Tegulum with distinct granulated TP, projecting prolaterally. Retrolateral face of cymbium without basal field of spiniform setae, prolateral cymbial lobe longer than retrolateral one. Retrolateral face of palpal tibia with distinct subapical protuberance not covered with cluster of numerous spiniform setae but with setae only (Figure 13g). Two unequal subapical apophyses are present on tibia I (Figure 28a): a longer retrolateral tibial apophysis with short, stout subapical spine, a shorter prolateral tibial apophysis with single, well-developed retrolateral spine at base and approximately of the same length as prolateral tibial apophysis. 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 4.00, basal segment 1.27, middle segment 1.01, apical segment 1.72, all digitiform. PMS: 0.65.
Coloration and covering setae: dorsal view (Figures 12a, 13a): carapace black with yellowish peripheral stripes, 0.4 – 0.5 wide, joined neither anteriorly nor posteriorly, coxae, trochantera, femora, patellae, tibiae and metatarsi black with longitudinal whitish stripes, tarsi black, chelicerae black, dorsally covered with yellowish pubescence. Patellae I, II and palpal patella with two indistinct longitudinal stripes without covering setae, patellae III, IV with single indistinct diagonal stripe. Abdomen (Figure 13d) covered with short black setae, intermixed with long, dark setae in posterior part, except central oval reddish patch and four pale lateral stripes, joined neither basally nor apically with central patch. Length of central patch: 2.08, width 1.88. Ventral view (Figure 13b): coloration damaged by long-term preservation in alcohol. Abdomen ventrally with indistinct longitudinal band (Figure 13e). Spinnerets grey.
Female (SMFD) (Figures 12b, 14a – 14f, 29d): Total length: 14.1, carapace length 6.2, width 5.6, chelicerae with 8 teeth on promargin. Cheliceral teeth pattern from basal end: right side: vVVVVVVV, 1 small and 7 big teeth. Left side: vVVVVVVV, 1 small and 7 big teeth. Anterior eye row slightly procurved, posterior eye row recurved. Eye sizes and interdistances (Figure 14f): AME 0.29 (circular), ALE 0.30 (oval), PME 0.16, PLE 0.21 (oval), AME – AME 0.08, AME – ALE 0.10, PME – PME 0.57, PME – PLE 0.06, ALE – PLE 0.13, AME – PME 0.08, OQ length 0.59, width 1.21. Ocular tubercle: length 0.86, width 1.21, clypeus absent. Fovea transverse, procurved, width 0.8, 3.9 from anterior edge of carapace. Labium length 0.9, width 1.2, anterior quarter with 48 cuspules, maxillae with 130 cuspules. Oval sternum, length 3.3, width 2.9, with three visible pairs of sternal sigilla located near coxae III (length 0.31, 0.16 from edge of sternum), coxae II and coxae I. Leg pattern: IV>I>II>III. All leg segments uniform, except slightly incrassate femora III.
Scopulae: All tarsi 100% densely scopulate, metatarsi I 70%, metatarsi II, III 60%, metatarsi IV 15% scopulate. Tarsal scopulae I integral, in tarsi II divided by longitudinal line of setae, in tarsi III divided by longitudinal band of setae, in tarsi IV divided by wide band of setae.
Spination: femora I – IV and femora of palps 0; patellae I – IV and patellae of palps 0; tibiae I-II 0, III v 0-0-2 (apical), r 0-1-0, IV v 0-0-2 (apical), r 0-0-1 and tibiae of palps v 0-0-2 (apical); metatarsi I v 0-0-1 (apical), II v 0-0-1 (apical), III v 0-2-3 (apical), p 1-0-1, r 0-0-1, IV v 1-2-3 (apical), p 0-1-1, r 0-0-1, tarsi I – IV and tarsi of palps 0.
Spermathecae (Figure 29d): two separated spiral seminal receptacles, distally terminated with shallow caliciform extension, without sclerotized basal plates, basally almost joined.
Abdomen: urticating setae of type III are located in central glossy patch. PLS: length 5.07, basal segment 1.69, middle segment 1.56, apical segment 1.82, all digitiform. PMS: 0.78.
Coloration and covering setae: dorsal view (Figures 12b, 14a): carapace black with two narrow whitish lateral stripes, joined neither anteriorly nor posteriorly, coxae, trochantera, femora, patellae, tibiae and metatarsi black with whitish longitudinal stripes. Tarsi black. All femora with two longitudinal stripes without covering setae, one of them on retrolateral face, the other on dorsal face. Patellae I, II with two longitudinal stripes, patellae III, IV with unequal diagonal stripes without covering setae. Femur I prolaterally bare. Abdomen black (Figure 14d), except central oval reddish glossy patch. Length of central patch: 3.1, width 2.5. Ventral view (Figure 14b): coloration damaged by long-term preservation in alcohol. Abdomen ventrally with indistinct longitudinal band (Figure 14e).
Variability
The variability in morphology of male palpal bulbs is shown on Figure 26e – h. The PS keel in the male from Rio Tarumã is not so pronounced as in the male holotype where it is subtriangular. Further comparative study of the specimens from both populations isolated by Rio Tarumã is necessary. 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.
description: Published as part of Kaderka, Radan, 2015, The Neotropical genus Cyriocosmus Simon, 1903 and new species from Peru, Brazil and Venezuela (Araneae: Theraphosidae: Theraphosinae), pp. 393-465 in Journal of Natural History 50 on pages 419-424, DOI: 10.1080/00222933.2015.1076082, http://zenodo.org/record/3985428