Antikuna cernickai Kaderka, Ferretti & Lüddecke, 2021

Kaderka, Radan, Ferretti, Nelson, Hüsser, Martin, Lüddecke, Tim & West, Rick, 2021, Antikuna, a new genus with seven new species from Peru (Araneae: Theraphosidae: Theraphosinae) and the highest altitude record for the family, Journal of Natural History 55 (21 - 22), pp. 1335-1402 : 1340-1343

publication ID	https://doi.org/ 10.1080/00222933.2021.1936680
persistent identifier	https://treatment.plazi.org/id/897CFC2A-FFCF-FFF2-FEBE-FD29FE5D367E
treatment provided by	Plazi
scientific name	Antikuna cernickai Kaderka, Ferretti & Lüddecke
status	sp. nov.

Treatment

Antikuna cernickai Kaderka, Ferretti & Lüddecke View in CoL , sp. nov.

( Figures 1–8 View Figure 1 View Figure 2 View Figure 3 View Figure 4 View Figure 5 View Figure 6 View Figure 7 View Figure 8 and 49 View Figure 49 , Tables 1 and 2)

Types: Male holotype ( MUSM-ENT 0514014 , formerly RKCP 0778 ) from Peru, Huancavelica, Pampas , 4,160 m a .s .l., 2011, M . Černička col .; female paratype ( MUSM- ENT 0514011 , formerly RKCP 0775 ) from Peru, Huancavelica, Pampas , 4,160 m a .s .l., 2011, M . Černička col .

Etymology: The specific name is a patronym in honour to M. Černička, a hobbyist who donated his collection of live spiders to MUSM arachnid collection.

Diagnosis: The males of Antikuna cernickai sp. nov. differ from all other congeners in having dark brown legs with darker femora with violet iridescence ( Figure 1 View Figure 1 ), a spatulate retrolateral branch of tibial apophyses carrying one apical spine and unipartite tegular protuberance. The females differ from all other congeners in having black legs and black abdomen dorsally not covered with long reddish-brown setae ( Figure 7 View Figure 7 (e)), and in the shape of spermathecae ( Figure 8 View Figure 8 ). Females also differ from A. cimrmani sp. nov., geographically very close congener, in the shape of seminal receptacles (long and narrow in Antikuna cimrmani sp. nov. and short and wide in A. cernickai sp. nov.).

Distribution ( Figure 49 View Figure 49 ): Known only from the type locality.

MALE (MUSM-ENT 0514014, formerly RKCP 0778) ( Figures 1 – 6 View Figure 1 View Figure 2 View Figure 3 View Figure 4 View Figure 5 View Figure 6 ): Total length: 19.90, carapace length 8.60, width 8.76, caput not elevated, chelicerae with 13 teeth on promargin. Cheliceral teeth pattern from basal end: right side: VV-VVVVVVVVVVv, 1 small and 12 big teeth. Left side: VV-VVVVVVVVVVv, 1 small and 12 big teeth. Anterior eye row procurved, posterior eye row recurved. Eye sizes and interdistances ( Figure 4 View Figure 4 (c)): AME 0.29 (circular), ALE 0.40 (oval), PME 0.34 (drop-like), PLE 0.42 (oval), AME-AME 0.23, AME-ALE 0.10, PME-PME 0.64, PME-PLE 0.04, ALE-PLE 0.20, AME-PME 0.16, OQ length 0.88, width 1.50. Ocular tubercle length 1.22, width 1.50, clypeus narrow, length 0.05. Fovea transverse, straight, width 1.23, 5.65 from anterior edge of carapace. Labium length 1.14, width 1.72, anterior third with 7 cuspules, maxillae with 128 cuspules in basal half. Distal half of ventral maxillae covered with short spiniform setae. Sternum length 4.57, width 4.05, three pairs of sternal sigilla located near coxae III (length 0.39, 0.52 from edge of sternum), coxae II (length 0.23, 0.31 from edge of sternum) and coxae I. Sigilla on labiosternal suture joined. Leg pattern: I>IV>II>III. Incrassate leg segments: incrassate femur III. Maxillary and trochanteral stridulatory bristles absent.

Scopulae: All tarsi 100% densely scopulate, metatarsi I 100%, metatarsi II 60%, metatarsi III 50%, metatarsi IV 0% scopulate. Tarsal scopulae I divided by a longitudinal line of setae, tarsal scopulae II–III divided by a longitudinal band of setae, tarsal scopulae IV divided by a wide band of setae. Dorsal face of all tarsi and cymbium with two irregular longitudinal rows of very short claviform trichobothria. Denticulation pattern of paired tarsal claws on right legs (prolateral/retrolateral row): I 6/5, II 9/4, III 5/8, IV 10/8. Plumose setae on retrolateral face of femur IV absent.

Spination: femora I d 1-2-2, II d 1-3-6, III d 0-1-6, IV d 5-1-4 and femora of palps p 0-0-2; patellae I v 0-2-0, p 0-2-0, r 1-0-0, II v 0-1-2, p 0-2-0, r 0-1-0, III v 0-0-1 (apical), p 0-1-0, r 0-1-0, IV r 0-1-0 and patellae of palps p 0-0-1; tibiae I v 3-3-1 (apical), p 1-1-1, r 1-1-0, II v 4-3-2-3 (apical), p 2-1-0, r 2-1-1, III v 4-3-2-3 (apical), p 2-1-1, r 2-1-0, IV v 5-3-3-2 (apical), p 2-1-1, r 3-1-1 and tibiae of palps p 1-0-2; metatarsi I v 0-0-1 (apical), p 1-0-0, II v 4-3-5 (apical), p 2-0-0, r 0-1-1, III v 3-3-1-5 (apical), p 2-0-1, r 1-2-1, IV v 2-3-5-3 (apical), p 1-1-1, r 1-1-2-1-1, d 1-2-1, tarsi I – IV and tarsi of palps 0.

Palpal organ as in Figure 6 View Figure 6 , embolus short, retrolaterally curved, with four keels, PS, PI, A and SA keel. PS keel is extended to tegulum, not reaching the apex of embolus, PI keel is short, semioval keel, SA keel has small subtriangular tooth. Tegulum with short granulated apophysis, projecting anteriorly. Retrolateral lobe of cymbium without short spiniform setae. Prolateral cymbial lobe distinctly larger than retrolateral one. Retrolateral face of palpal tibia without retrolateral process, without a field of spiniform setae ( Figure 5 View Figure 5 (a)). Two unequal, basally fused subapical apophyses are present on tibia I ( Figure 5 View Figure 5 (b)): a longer retrolateral tibial apophysis with short subapical spine, a shorter prolateral tibial apophysis with single, retrolateral spine not reaching the apex. Metatarsus I not sigmoidly curved and without basal or median protuberance on retrolateral face. When flexed, metatarsus I contacts both tibial apophyses.

Abdomen ( Figure 4 View Figure 4 (e)): urticating setae of type III are located in central patch. Size of the patch: length 4.26, width 5.24. PLS: length 4.31, basal segment 1.79, middle segment 1.22, apical segment 1.30, all digitiform. PMS: 0.99.

Colouration and covering setae: dorsal view ( Figure 1 View Figure 1 ): carapace, chelicerae basally, coxae, trochantera covered with golden pubescence, femora dark grey with dark blue iridescence, patellae, tibiae, metatarsi and tarsi dark grey with long pale setae. Femora, patellae and tibiae sparsely covered with golden pubescence. Patellae I, II and palpal patella with two almost equal longitudinal pale stripes, patellae III, IV with two unequal, pale diagonal stripes. Abdomen black with anterior dorsal area covered with long reddishbrown setae, laterally with long pale setae. Ventral view: dark grey, except for reddish brown labium and maxillae and two anterior booklungs of ventral abdomen and area above epigastric scutum which are yellowish brown ( Figure 4 View Figure 4 (f)). Spinnerets dark grey.

FEMALE (MUSM-ENT 0514011, formerly RKCP 0775) ( Figures 7 View Figure 7 and 8 View Figure 8 ): Total length: 18.86, carapace length 7.53, width 7.23, caput elevated, chelicerae with 10 – 11 teeth on promargin. Cheliceral teeth pattern from basal end: right side: V-VVVVVVVVVV, 11 big teeth. Left side: V-VVVVVVVVV, 10 big teeth. Anterior eye row procurved, posterior eye row recurved. Eye sizes and interdistances ( Figure 7 View Figure 7 (c)): AME 0.23 (circular), ALE 0.39 (oval),

PME 0.26 (oval), PLE 0.32 (oval), AME-AME 0.23, AME-ALE 0.14, PME-PME 0.56, PME-PLE 0.12, ALE-PLE 0.22, AME-PME 0.12, OQ length 0.79, width 1.35. Ocular tubercle: length 1.09, width 1.35, clypeus narrow, length 0.117. Fovea transverse, straight, width 1.20, 5.08 from anterior edge of carapace. Labium length 1.11, width 1.74, anterior third with 12

cuspules, maxillae with 132 – 143 cuspules in basal half and short spiniform setae in apical half. The majority of maxillary cuspules is located on moderately elevated area. Sternum domed, length 4.33, width 3.71, with three visible pairs of sternal sigilla located near coxae III (length 0.34, 0.31 from edge of sternum), coxae II (length 0.24, 0.22 from edge of sternum) and coxae I (length 0.16, 0.16 from edge of sternum). Leg pattern: IV>I>II>III. All leg segments uniform.

Scopulae: All tarsi 100% densely scopulate, metatarsi I 95%, metatarsi II 60%, metatarsi III 50%, metatarsi IV 10% scopulate. Tarsal scopulae I divided by a line of longitudinal setae, tarsal scopulae II divided by a longitudinal band of setae, in tarsi III, IV divided by a wide band of setae. Dorsal face of all tarsi and cymbium with two irregular longitudinal rows of very short claviform trichobothria. Denticulation pattern of paired tarsal claws on left legs (prolateral/retrolateral row): I 8/8, II 8/5, III 4/4, IV 3/6. Plumose setae on retrolateral face of femur IV absent.

Spination: femora I 0, II p 0-0-1, III 0, IV d 1-0-0 and femora of palps 0, patellae I – IV and patellae of palps 0, tibiae I 0, II v 0, III v 0-1-2 (apical), r 0-1-0, IV r 0-0-1 and tibiae of palps v 0-0-3 (apical), metatarsi I v 0-0-1 (apical), II v 0-1-4 (apical), III v 0-2-4 (apical), p 0-1-1, r 0-0-1, IV v 2-1-2-1-3 (apical), tarsi I – IV and tarsi of palps 0.

Spermathecae ( Figure 8 View Figure 8 (c – f)): two separated sclerotised seminal receptacles, divergent, basally not joined.

Abdomen: urticating setae of type III are located in oval central patch. PLS: length 3.16, basal segment 1.24, middle segment 0.78, apical segment 1.14, all digitiform. PMS: 1.14.

Colouration and covering setae: dorsal view ( Figure 7 View Figure 7 (a, e)): carapace, coxae, trochantera and chelicerae dark brown and covered with golden pubescence, femora, patellae, tibiae, metatarsi and tarsi dark brown, intermixed with long, pale setae. Patellae I, II and palpal patella with two almost equal parallel longitudinal stripes without covering setae, patellae III, IV with two unequal diagonal stripes. Palpal tibiae, tibiae I – IV with two equal longitudinal stripes. Palpal femur prolaterally bare. Abdomen ( Figure 7 View Figure 7 (e)) covered with short dark brown setae, intermixed with long, reddish brown setae, except oval central patch which is brown. Length of central patch: 4.09, width 4.89. Ventral view: labium and maxillae dark reddishbrown, sternum, coxae, trochantera, femora, patellae, tibiae and metatarsi dark brown. Abdomen ventrally dark brown. Spinnerets dark brown.

Remarks: Both none-type juvenile specimens with carapace length 3.10 and 4.73 were examined and both have type III urticating setae on dorsal abdomen, short spiniform setae on ventral maxillae and number of labial cuspules (7 and 11) comparable with both type specimens (7 in male holotype and 12 in female paratype). It seems that the number of labial cuspules is relatively stable during the ontogeny but more data is needed to support this observation.