Thalerommata anae, Ríos-Tamayo, 2024

Thalerommata anae sp. nov. ( Figs 22A–F, 23A–H, 24A–D, 25A–D, 26)

https://zoobank.org/ urn:lsid:zoobank.org:act:

Type Material. Holotype ♂, Cuba, Sancti Spíritus Province, Pico Potrerillo ( 90 m. a.s.l) [ 21°53'N 80°0'W], 6.VI.1992, coll. N. Navarro ( ZMB 50603 View Materials ). GoogleMaps

Etymology. The specific name honours Ana Tamayo Espinosa, mother of the author, for her support all these years.

Diagnosis. Males of Thalerommata annae n. sp. can be distinguished from those of all other species (except T. gertschi Bertani & Raven, 2023 ) by lacking spines on the cymbium. It differs from T. gertschi by the bulb with the tegulum well defined, (pyriform and not defined in T. gertschi ) ( Fig. 23 E–G); by the presence of spines on the pedipalp tibia ( Fig. 23D, H) and by the higher number of maxillary cuspules (50 vs 28).

Description. Male ( holotype, ZMB 50603, Figs 22–25): Total length: 6.68. Carapace ( Fig. 22A, B): 3.80 long, 3.01 wide. Cephalic region 2.55 long, slightly raised, almost flat. Fovea straight ( Fig. 22B), 0.48 long. Ocular region ( Fig. 22D) on a slightly prominence, 0.34 long, 0.68 wide. Anterior ocular row procurved with five anterior setae; posterior row recurved.

Ocular measurements: AME 0.08, ALE 0.20, PME 0.15, PLE 0.18; AME–ALE 0.04, PME–PLE 0.03, AME–PME 0.07, ALE–PLE 0.06, AME–AME 0.08, PME–PME 0.24. Chelicerae: elongate and slender, hirsute. Furrow promargin with 10 teeth, with 23 denticles near the apex. Intercheliceral tumescence absent and some setae as rastellum. Labium ( Fig. 22E): 0.41 long; 0.53 wide; with 10 rounded cuspules and abundant apical bristles. Labio-sternal suture narrow with two lateral sigilla well separated. Maxillae ( Fig. 22E): promargin 1.04 long, retromargin 1.35 long, 0.66 wide, with 53/50 cuspules in inner angle, developed angular heel. Sternum ( Fig. 22C): 1.89 long, 1.61 wide; all sigilla small and marginal, oval. Abdomen, dorsal ( Fig. 22A): ~2.88 length, with scales on the dorsal and lateral sides. Booklung combs hardly visible. Spinnerets ( Fig. 22F): posterior median:0.24 long; posterior lateral with basal: medial: apical lengths 0.42:0.27:0.22.

Lengths of legs and pedipalp (femur, patella, tibia, metatarsus, tarsus, total): I: 2.89, 1.94, 2.15, 2.09, 1.24, 10.31. II: 2.48, 1.63, 1.69, 1.82, 1.13, 8.75. III: 2.35, 1.44, 1.58, 2.38, 1.17, 8.91. IV: 3.30, 1.77, 2.64, 3.82, 1.31, 12.84. pedipalp: 1.81, 1.21, 1.52, —, 0.54, 5.08. Chaetotaxy: Leg I: fe d0-0-1ap, pa 0, ti p0-0-1 v2-2-1ap, me v1- 2-2, ta 0. Leg II: fe d0-0-1, pa 0, ti p0-1-1-0 v2-1-3ap, me p1 v2-3-2ap, ta 0. Leg III: fe d2-2ap, pa p0-2-0 r1, ti p2-2 v2-2-3ap r1-2, me d1-2-2 p1-1 v2-1-1-3 r1-1, ta 0. Leg IV: fe d0-0-2-2, pa p1 r1, ti p2-2 v2-2-3ap r2-1-2, me d2-2-2 p1-1-1 v2-1-1-3ap r1, ta 0. Tibia I with twin apophysis ( Fig. 23A–C): positioned completely prolaterally, apical branch conical, small with an apical small megaspine, inferior branch small with an apical long megaspine (3 times longer than the branch), apical and inferior branches well separated.

Pedipalp: fe d0-0-1, pa 0, ti p1 (with rigid setae, on the sides of the groove, where the bulb rests), ta 0. Tarsi I ventrally discoloured, tarsi IV not cracked. Pedipalp ( Fig. 23D, H); cymbium small, with a small incision. Bulb ( Fig. 23E–G): 1.53 length, piriform with a very long embolus 1.25 long.

Scopulae : apical on cymbium. Legs: I: Me 1:2 A, Ta complete throughout the segment. II: Me 1:2 A, scarce, Ta complete throughout the segment. III: Me bare, Ta complete throughout the segment, divided by a band of setae. IV: Me bare, Ta complete throughout the segment, divided by two central rows of setae and a line of bristles on each side. Trichobothria: (Filiform): Pedipalp: cannot be distinguished. Legs: I Ti 5/5, Me 6, Ta 5/5; II, Ti 5/6, Me 6, Ta 6/6; III Ti 6/5, Me 8, Ta 5/5; IV Ti 6/7, Me 8, Ta 7/7. Clavate trichobothria in two rows on distal half (separated by a band of small rigid setae): [cannot be distinguished on pedipalp]; 5/5 on tarsus I; 5/5 on tarsus II; cannot be distinguished on tarsus III; 5/5 on tarsus IV. STC two rows (double on each side of the paired claws): I 4/1, 4/4; II 4/3, 4/3; III 3/0, absent; VI 3/2, 4/2.

Scales ( Figs 24, 25): Two types with pointed apex and margins. Type I, wide, ornamented with longitudinal ridges joined between them by small, curved, plicae ( Fig. 24A–D), the internal rachis are bare while the nearest to the edge and the margin present pointed projections ( Fig. 24A). Type II is slender with numerous longitudinal keels from the base to the apex and the margin present pointed projections ( Fig. 25A–D). The base is wide with different ornamentations on it, while the pedicel is bent, hollow and with small ornamentations ( Figs 24D, 25D). Colour in alcohol: Chelicerae brown, carapace and legs orange-brown. Abdomen cannot be distinguished.

Female. Unknown.

Distribution. Cuba, Sancti Spíritus province, Trinidad municipality ( Fig. 26).