Caraimatta brescoviti, García & Martínez & Ahumada-C, 2019

García, Andrés F., Martínez, Leonel & Ahumada-C, Daniela, 2019, A new species of the armored spider genus Caraimatta Lehtinen, 1981 from Colombia (Araneae: Synspermiata: Tetrablemmidae), Zootaxa 4619 (1), pp. 168-176 : 170-173

Caraimatta brescoviti sp. nov.

Figures 1–4

Types. Holotype: male from finca El Atardecer Gaitero (9º50′42.6″N, 75º11′6.2″W), San Jacinto , Bolivar, Colombia, 350 m, 24.III.2017, L. Martínez & E. Villarreal leg. (ICN-Ar-10750) . Paratypes: One female same data as holotype (ICN-Ar-10751) . Two females from S.F.F. Los Colorados, sendero El Yayal, (9º57′3.79″N, 75º5′29.21″W), San Juan Nepomuceno , Bolivar, Colombia, 200 m, 04.V.2012, D. Luna & C. Romero leg. (ICN-Ar-7350) . One male and two females from Reserva Primatológica Municipal, (9°32′42.5″N, 75°20′24.6″W), Colosó, Sucre, Colombia, 390 m, 06.V.2016, R. Torrez leg. (ICN-Ar-10752 [1♀]), (MACN-Ar-40210 [1♀, 1♂]), respectively .

Etymology. The specific epithet is a patronym in honor of Dr. Antonio Domingos Brescovit, by his many contributions to taxonomic and systematic studies on spider of the world.

Diagnosis. Males of Cariamatta brescoviti sp. nov., resemble those of C. cambridgei (Bryant) and C. sbordonii (Brignoli) by their having a long conductor (see Shear, 1978:16–19, figs 25–36; Lehtinen, 1981:69–71, 150, fig. 315a, b) but they can be distinguished from those of all previously mentioned species by a deep furrow in the embolus and conductor base ( Fig. 2D ), long and straight embolus without apical modifications, and long and knifeshape conductor without basal modifications ( Figs 2B , 3B ). Females can be diagnosed by the epigynum with large seminal receptacles, transversal vulval ducts longer that in C. cambridgei (Bryant) , C. sbordonii (Brignoli) and C. blandini Lehtinen (see Shear, 1978:16–19, figs 32; Lehtinen, 1981:69–71, 150, figs 36, 310; Fig. 3C ).

Description. Male (Holotype, ICN-Ar-106750). Measurements (in mm): Total body length = 1.05, carapace length = 0.41, width = 0.40, height = 0.19. Clypeus height = 0.14. Eye diameters and interdistances: ALE = 0.05, PLE = 0.02; ALE–ALE = 0.10, PLE–PLE = 0.12, ALE–PLE = 0.07. Sternum length = 0.25, width = 0.29. Chelicerae (paturon) length = 0.12. Legs: Leg I—femur 0.28 / patella 0.12 / tibia 0.25 / metatarsus 0.16 / tarsus 0.20 / total 1.01; II—0.26 / 0.09 / 0.23 / 0.13 / 0.18 / 0.89; III—0.23 / 0.08 / 0.16 / 0.15 / 0.17 / 0.79; IV—0.31 / 0.10 / 0.27 / 0.16 / 0.14 / 0.98. Abdomen length = 0.64, width = 0.55. Body coloration reddish-brown. Legs yellow-brown. Spinnerets yellow ( Figs 1 A–C, 4A). Carapace ( Fig. 1 A–C): cephalothorax finely reticulated, few raised and subtriangularshaped; eyes white, ALE>PLE in size; clypeus high and lightly sloping forward; thoracic region smooth and with radial grooves; Chelicerae with a wide and few develop apophysis on basal side; endites subquadrangular-shaped with the very wide basal edge and narrowing towards the distal edge; labium trapezoidal-shaped and wider that long; sternum rugose, with few setae uniformly distributed. Legs cuticle striated. Opisthosoma ( Figs 1 A–C, 4A): covered with white and fine setae on posterior edge; dorsal scutum oval-shaped and smooth; ventral scutum (pulmonar scutum) finely reticulated; lateral scutum very long, extending to more than half of the anal plate; postgeni- tal scutum subquadrangular-shaped, long and narrow; preanal scutum rectangular-shaped and wide. Palp ( Figs 2 , 3 A–B): femur with granules on the cuticle, long setae and swollen in the basal edge ( Fig. 2A, F ); patella short with a distal organ on both prolateral and retrolateral edges ( Figs 2A, 2C, 2E ); tibia short and swollen with a distal organ on prolateral edge ( Fig. 2G ); cymbium short with black and long setae and a small organ; bulb wide pear-shaped; embolus long, straight and inserted basally, filiform toward distal end, with the cuticle of granulated consistency; wide and long conductor ( Figs 2 B–D, 3A–B).

Female (Paratype, ICN-Ar-106751). Measurements (in mm): Total body length = 1.23, carapace length = 0.50, width = 0.41, height = 0.26. Clypeus height = 0.15. Eye diameters and interdistances: ALE = 0.05, PLE = 0.04; ALE–ALE 0.10, = PLE–PLE = 0.13, ALE–PLE = 0.07. Sternum length = 0.32, width = 0.27. Chelicerae (paturon) length = 0.12. Leg measurements: Leg I—femur 0.34 / patella 0.11 / tibia 0.25 / metatarsus 0.14 / tarsus 0.16 / total 1.00; II—0.30 / 0.10 / 0.22 / 0.13 / 0.18 / 0.93; III—0.24 / 0.12 / 0.20 / 0.16 / 0.18 / 0.90; IV—0.28 / 0.11 / 0.30 / 0.20 / 0.21 / 1.10. Abdomen length = 0.73, width = 0.65. Coloration as male ( Fig. 1 D–F). Carapace ( Fig. 1 D–F): cephalothorax finely reticulated slightly raised and subtriangular-shaped; eyes white, ALE>PLE in size; clypeus high; thoracic region smooth and with radial grooves; Chelicerae with a wide and few develop apophysis on proximal side; endites subquadrangular-shaped with the wide basal edge, narrowing towards the distal edge; labium trapezoidal-shaped and wider that long; sternum rugose with few setae on lateral edges. Legs cuticle striated. Opisthosoma ( Figs 1 D–F, 4B): covered with white and black fine setae, mainly on posterior edge; dorsal scutum oval-shaped and smooth; ventral scutum (pulmonar scutum) finely reticulated; lateral scutum long, extending to half of the anal plate; postgenital scutum subrectangular-shaped, long and narrow; preanal scutum rectangular-shaped and wide, with rounded borders. Epigynum ( Figs 3C , 4B ): orifice small and situated on posterior edge of epigynal fold; inner epigynal plate wider than long, seminal receptacles membranous and bean-shaped; vulval ducts long ( Figs 3 C–D).

Variation. Males (n=2): total length: 1.00–1.05; carapace length: 0.45–0.50. Females (n=2): total length: 1.12– 1.23; carapace length: 0.43–0.50.

Habitat. The specimens were caught sifting leaf litter, in a semi-humid transitional dry forest (according the tropical dry forest (Bosque Seco Tropical) classes proposed by Etter et al. (2008)), in a fragment of secondary forest, of the Bolivar and Sucre departments. Bolivar presenting an average of temperature 28°C, and an average yearly precipitation close to 1450 millimetres; and Sucre presenting an altitudinal known range of 390 m, with an average yearly precipitation close to 1297 millimetres, 28°C in average of temperature (Rangel-Ch. & Cavajal-Cogollo, 2012), and relative humidity average 83,5%.

Distribution. Only known from its type locality (Bolivar and Sucre departments) ( Fig. 6 ).

Figures

FIGURE 1. Caraimatta brescoviti sp. nov. A–C. Male holotype (ICN-Ar-10750) habitus: A. Dorsal view, B. Lateral view, C. Ventral view. D–F. Female paratype (ICN-Ar-10751) habitus: D. Dorsal view, E. Lateral view, F. Ventral view.

FIGURE 2. Caraimatta brescoviti sp. nov. SEM images of male pedipalp (ICN-Ar-10752). A. Retrolateral view, B. Detail of the embolic and conductor base, C. Prolateral view, D. Detail of furrow in embolus and conductor base, E. Prolateral femoral and patellar organs, F. Cuticular granulation of the femur, G. Distal tibial organ.

FIGURE 3. Caraimatta brescoviti sp. nov. A–B. Male holotype (ICN-Ar-10750) pedipalp: A. Retrolateral view (the red arrow indicates the detail of the furrow in embolus and conductor base), B. Prolateral view. C–D. Female paratype (ICN-Ar-10750), epigynum: C. General view of seminal receptaculum and vulval duct, D. Inner epigynal plate. Abbreviations: C = conductor of palp male; E = embolus; SD = spermatic duct; PCB = process of conductor base; SR = seminal receptaculum; VD = vulval duct.

FIGURE 4. Caraimatta brescoviti sp. nov. Abdomen in ventral view: A. Male, B. Female. Abbreviations: A = anal plate; EF = epigynal fold; EP = epigynal pit; L = lateral plate; P = pulmonary plate; PA = preanal plate; PG = postgenital plate.

FIGURE 6. Map showing the distribution of Caraimatta species and Monoblemma muchmorei in America (the detailed area shows the distribution of Caraimatta brescoviti sp. nov. in the tropical dry forest of Caribbean region of Colombia).