Urupelma johannae, Kaderka, Lüddecke, Rezac, Rezacova and Hüsser, 2023

Radan Kaderka, Tim Lüddecke, Milan Řezáč, Veronika Řezáčová & Martin Hüsser, 2023, Revision of the Peruvian tarantula Homoeomma peruvianum (Chamberlin, 1916): description of a new genus with eleven new species and insights to the evolution of montane tarantulas (Araneae: Theraphosidae: Theraphosinae), Journal of Natural History 57 (41 - 44), pp. 1710-1824 : 1797-1799

Urupelma johannae sp. n.

( Figures 59–61 , 78F ; Table 20 )

Types

Female holotype ( MUSM-ENT 0514015 , exuvia RKCP 0685 ) from Peru, Cuzco province, Quincemil , 746 m a .s .l ., 18 October 2014, R . Kaderka col.

Etymology

The specific name is a patronym in honour of Jana Kaderkova, wife of the first author, for her patience and support, and also her indulgence of his unusual hobby.

Diagnosis

The females of U. johannae sp. n. differ from all congeners, except for U. ashaninka sp. n., in having oval seminal receptacles basally joined ( Figure 61 ). It differs from U. ashaninka sp. n. in a different colouration, the absence of type III urticating setae and the extension of urticating setae patch in females (more extended in U. johannae sp. n. and less extended in U. ashaninka sp. n.) ( Figures 37C and 60D ).

Distribution and natural history

Known from the type locality in Quincemil , Cuzco, Peru ( Figure 76 ) .

FEMALE (MUSM-ENT 0514015): ( Figures 59–61 ) Total length: 26.24, carapace length 11.01, width 10.69, chelicerae with 16–17 teeth on promargin. Anterior eye row slightly procurved, posterior eye row recurved. Eye sizes and interdistances: ( Figure 60C ) AME 0.46 (circular), ALE 0.49 (oval), PME 0.39 (oval), PLE 0.43 (oval), AME-AME 0.20, AME-ALE 0.20, PME-PME 0.83, PME-PLE 0.10, ALE-PLE 0.21, AME-PME 0.14, OQ length 1.014, width 1.885. Ocular tubercle: length 1.495, width 1.885, clypeus narrow, length 0.156. Fovea transverse, procurved, width 2.08, 8.35 from anterior edge of carapace. Labium length 1.77, width 2.48, anterior third with 54 cuspules, maxillae with 170–191 cuspules in basal half, short spiniform setae in apical half absent. Sternum length 5.80, width 5.28, with three visible pairs of sternal sigilla located near coxae III (length 0.49, 0.64 from edge of sternum), coxae II (length 0.29, 0.47 from edge of sternum) and coxae I (length 0.23, 0.46 from edge of sternum). Sigilla on labiosternal suture joined. Leg formula: IV> I> II> III. All leg segments uniform.

Scopulae: All tarsi 100% densely scopulate, metatarsi I 55%, metatarsi II 45%, metatarsi III 25%, metatarsi IV 0% scopulate. Tarsal scopulae I undivided, 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 of paired tarsal claws on left legs (prolateral/ retrolateral row): I 0/3, II 4/4, III 3/2, IV 3/3. Plumose setae on retrolateral face of femur IV absent.

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

Spermathecae: ( Figure 61 ) unipartite, subtriangular, with two large oval lobes.

Abdomen: urticating setae of type IV are located in a large oval central patch. PLS: length 4.63, basal segment 1.72, middle segment 1.40, apical segment 1.51, all digitiform. PMS: 1.09.

Colouration and covering setae: dorsal view: ( Figure 59 ) carapace sparsely covered with short golden pubescence, edge of carapace with long pale setae, coxae, trochantera, femora, patellae, tibiae, metatarsi and tarsi brown, intermixed with long, pale setae. Patellae I, II, palpal patella, femora I–IV, palpal femora, tibiae I–IV and palpal tibiae with two almost equal parallel longitudinal stripes without covering setae, patellae III, IV with two unequal diagonal stripes. Femora I–IV and palpal femora retrolaterally with one longitudinal stripe without covering setae. Abdomen brown, intermixed with long, pale setae, except for the oval central patch which is dark brown. Length of the central patch: 9.71, width 8.19. Ventral view: labium and maxillae dark reddish-brown, sternum, coxae, trochantera, femora, patellae, tibiae and metatarsi brown. Abdomen ventrally yellowish brown, without dark longitudinal band. Spinnerets yellowish brown.

MALE: unknown.

Variability

The variability in the shape of spermathecae is shown in Figure 61 .

Figures

Figure 37. Urupelma ashaninka sp. n., female paratype (MUSM-ENT 0511139) from Peru, Junín, Puerto Ocopa, 654 m a.s.l. A. Carapace, dorsal view. B. Sternum, labium, maxillae, coxae and trochantera, ventral view. C. Abdomen, dorsal view. D. Labium and left maxilla, ventral view. E. Ocular tubercle, dorsal view. Scale bar = 1 mm. Photo by R. Kaderka.

Figure 59. Urupelma johannae sp. n., female from Peru, Cusco, Quincemil, habitus of female holotype (MUSM-ENT 0514015). Scale bar = 1 mm. Photo: R. Kaderka.

Figure 60. Urupelma johannae sp. n., female holotype (MUSM-ENT 0514015) from Peru, Cusco, Quincemil. A. Carapace, coxae and trochantera, dorsal view. B. Sternum, labium, maxillae and coxae, ventral view. C. Ocular tubercle, dorsal view. D. Abdomen, dorsal view. E. Abdomen, ventral view. F. Labium and left maxilla, ventral view. Scale bars: A–C, F = 1 mm; D, E = 10 mm. Photo: R. Kaderka.

Figure 61. Urupelma johannae sp. n., female holotype (MUSM-ENT 0514015) from Peru, Cusco, Quincemil. Spermathecae with fused seminal receptacles, terminating with two oval lobes, dorsally concave, ventral view. A. Dissected from exuvia. B. Dissected from specimen in alcohol. Scale bar = 1 mm. Photo: R. Kaderka.

Figure 76. Distribution map of Urupelma gen. n. from Peru. Prepared by M. Hüsser.

Figure 78. Urticating setae types found in single species of Urupelma gen. n. A. Urupelma sanctimariae sp. n., female paratype (MUSM-ENT 0513025). B. Urupelma sanctimariae sp. n., juvenile specimen of female paratype (MUSM-ENT 0513025) with carapace length 1.9 mm. C. Urupelma sanctitheresae sp. n., male holotype (MUSM-ENT 0513021). D. Urupelma veronicae sp. n., female paratype (MUSM-ENT 0511154). E. Urupelma machiguenga sp. n., female paratype (MUSM-ENT 0513027). F. Urupelma johannae sp. n., female holotype (MUSM-ENT 0514015). Prepared by R. Kaderka.