Tenedos barronus ( Chamberlin, 1925 )

Martínez, Leonel, Brescovit, Antonio D. & Quijano, Luis G., 2022, Revealing the diversity of ant-eating spiders in Colombia I: morphology, distribution and taxonomy of the barronus group of the genus Tenedos O. Pickard-Cambridge, 1897 (Araneae: Zodariidae), Zootaxa 5130 (1), pp. 1-154 : 22-27

Tenedos barronus ( Chamberlin, 1925)

Figs 11–14 ; 106 .

Naibena barrona Chamberlin, 1925: 214 (Holotype immature female from Isla Barro Colorado , Panama, deposited in MCZ 1267 , not examined).

Storena barroana: Chickering, 1947: 133 , figs 1–7 (descriptions of male allotype and female hypotype).

Tenedos barronus: Jocqué, 1991: 96 , figs 8, 17, 24, 213–219, 250; Jocqué & Baert, 2002: 87, figs 10A–D, 24C.

Material examined. COLOMBIA. Chocó : Acandí , Capurganá ; Jardín Botánico del Darién , Vereda Los Ríos, Wet forest, Pitfall trap, 90m [8°38′23.12″N, 77°21′1.53″W], E. González, D. Montañez & D. Peña leg., 24.IV.2007, 1 ♀ ( MPUJ _ ENT 0068208 ) , Capurganá ; Jardín Botánico del Darién , Vereda Los Girasoles, Wet forest, Pitfall trap, 250m, N. López leg., 24.IV.2007, 1 ♂ ( MPUJ _ ENT 0062009 ) , Capurganá ; Jardín Botánico del Darién , Vereda Los Ríos, Wet forest, Pitfall trap, 90m, S. Calvo, M. Marta & J. Suarez leg., 31. III.2009, 1 ♂ ( MPUJ _ ENT 0062001 ) , 60m, A. Bernal leg., same date, 1 ♂ ( MPUJ _ ENT 0061975 ) , 90m, same collector, 28. III.2009, 2 ♂ ( MPUJ _ ENT 0061988 ) , Wet forest , stubble, 60m, M. Camargo & J. Izquierdo leg., 11.IV.2008, 1 ♂ ( MPUJ _ ENT 0061962 ) .

Diagnosis. Males of Tenedos barronus ( Chamberlin, 1925) , resemble those of T. hoeferi Jocqué & Baert, 2002 , by having exceptionally developed conductor (C) curved at prolateral side; short, conical retrolateral tibial apophysis (RTA) (see Jocqué & Baert, 2002: 87, 100, figs 10A–B; 18B–C; figs 12A–D; 13A–B; 14A–F), but can be recognized by bifid median apophysis, anterior branch (aMA) thin, procurved, apically filiform, posterior branch (pMA) very short ( Figs 12A–D ; 13A–B ; 14A–F ). Females are similar to those of T. hoeferi Jocqué & Baert, 2002 and T. quadrangulatus Jocqué & Baert, 2002 , by long seminal receptacles (SR) curved towards median septum; sub-quadrangular-shaped atrium (A), posteriorly delimited (see Jocqué & Baert, 2002: 87, 100, 116, figs 10C–D, 18D–E, 33A–B; figs 12E–F; 13C–D), but can be distinguished by the shape of the median field plate (MFP), wider than long, slightly bilobed at posterior edge; elliptic-shaped atrium ( Figs 12E–F ; 13C–D ).

Description. Male (MPUJ_ENT 0062001). Coloration ( Fig. 12A–B ): carapace light brown with wide dark brown stripes on lateral margins, narrowing towards cephalic region, and two dark brown and short coma-shaped spots on cephalic region. Chelicerae brown with dark paturon base, fangs brown-reddish. Endites light brown, white on anterior region. Labium and sternum light brown. Legs: coxae I–IV light yellow. Femora and patellae I–IV light brown. Tibia, metatarsi and tarsi I-II yellow, III–IV light brown. Abdomen: dorsally dark gray with eight white guanine spots organized as follows: two small and rounded, followed by two larger than previous ones, anteriorly positioned; two rounded spots and larger than previous ones, medially positioned; two transversal and wide bands, posteriorly positioned, anterior one very thin. Laterally with wide longitudinal white band. Ventrally gray with two pale oblique stripes very wide, occupying almost all abdomen superficies. Spinnerets light brown. Measurements: total length 4.65, carapace length 2.33, width 1.53, height 0.95. Clypeus height 0.51. Eye diameters and interdistances: AME 0.07, ALE 0.08, PME 0.10, PLE 0.08; AME–AME 0.18, AME–ALE 0.20, AME–PME 0.18, PME–PME 0.24, PME–PLE 0.36, ALE–PLE 0.22. Chelicerae length 0.87 length. Sternum length 0.98, width 0.92. Legs: I—femur 1.57/ patella 0.62/ tibia 1.65/ metatarsus 1.51/ tarsus1.12/ total 6.47; II—1.45/ 0.61/ 1.34/ 1.28/ 0.97/ 5.65; III—1.40/ 0.61/ 1.20/ 1.46/ 0.83/ 5.50; IV—1.62/ 0.72/ 1.58/ 2.02/ 0.90/ 6.84. Abdomen length 2.15. Legs spines pattern (only differences from the general pattern): III—femur r0-0-1d, metatarsus p0-1-2; IV—femur p1d-0-1d, r0, metatarsus d1p-1p-0. Palp: retrolateral process of cymbium (RPC) wide with external edge rounded; tegulum (T) rounded, almost as wide as long; subtegulum (St) longer than wide, external edge rounded and membranous with small ventral protuberance, as long as subtegulum length in ventral view; conductor (C) developed, wide, slightly curved in prolateral side, with some modifications on basal side such and furrows and small granules, long, thin sclerotized region on distal side; appendix (ApC) long and apically sharp, surpassing in anterior side with small projection; embolus (E) very long, forming prolateral arc, laminar at base, filiform towards apex; base of embolus (EB) approximately as long as two times basal tegular membrane; basal tegular membrane (BTM) short, apically rounded; spermatic ducts (SD) S-shaped, anterior fold closed, wide, posterior fold open, thin; ventral tibial apophysis (VTA) short, apically straight; median apophysis (MA) large, bifid, anterior branch (aMA) long, recurved, posterior branch (pMA) reduced to small appendix; retrolateral tibial apophysis (RTA) conical almost as long as palpal tibia, sub-triangular, apically acuminated ( Figs 12A–D ; 13A–B ; 14A–F ).

Female (MPUJ_ENT 0068208). Coloration ( Fig. 12C–D ): carapace uniformly dark brown. Chelicerae brown with dark paturon base, fangs brown-reddish. Endites brown, white on anterior side. Labium and sternum brown. Legs: coxae I–IV light brown. Femora I–IV brown. Tibiae-tarsi I–IV light brown. Abdomen coloration and guanine spots pattern as male, with larger spots. Ventrally with narrower pale spots. Spinnerets brown. Measurements: total length 6.30, carapace length 2.98, width 1.82, height 1.30. Clypeus height 0.56. Eye diameters and interdistances: AME 0.09, ALE 0.10, PME 0.09, PLE 0.12; AME–AME 0.23, AME–ALE 0.27, AME–PME 0.36, PME–PME 0.28, PME–PLE 0.43, ALE–PLE 0.39. Chelicerae 1.19 length. Sternum length 1.05, width 1.07. Legs: I—femur 1.66/ patella 0.64/ tibia 1.50/ metatarsus 1.33/ tarsus 1.07/ total 6.20; II—1.43/ 0.68/ 1.29/ 1.20/ 0.89/ 5.49; III—1.45/ 0.70/ 1.17/ 1.34/ 0.87/ 5.53; IV—1.76/ 0.79/ 1.68/ 1.98/ 1.11/ 7.32. Abdomen length 2.86. Legs spines pattern (only the differences from the general pattern): I—tibia v2-1r-2; II—metatarsus v2-0-2; IV—femur r0-0-1d, tibia 1p-1p-2, metatarsus d1p-1p-0. Epigyne: lateral borders (LB) short, posteriorly positioned, forming atrium (A), wider than long; median field plate (MFP) wider than long, bilobed in basal side; copulatory ducts (CD) very short, thin, almost undistinguished from spermathecae; seminal receptacles (SR) long, curved towards median septum; spermathecae (S) large, irregulars, posteriorly positioned; fertilization ducts (FD) as long as 1/2 spermathecae length and wide ( Figs 12E–F ; 13C–D ).

Variation. Males (n=4): total length: 5.93–6.69; carapace length: 2.89–3.01; femur I length: 1.62–1.64.

Distribution. Known from the type locality (Barro Colorado Island, Panama) and Chocó department, Colombia ( Fig. 106 ).

Figures

FIGURE 11. Tenedos barronus (Chamberlin, 1925). A–B. Male habitus (MPUJ_ENT 0062001): A. Dorsal view. B. Ventral view. C–D. Female habitus (MPUJ_ENT 0061949): C. Dorsal view. D. Ventral view. Scale bar: A–D: 2mm.

FIGURE 12. Tenedos barronus (Chamberlin, 1925). A–D. Male palp (MPUJ_ENT 0062001): A. Prolateral view. B. Retroventral view. C. Ventral view (asterisk indicates the BTM and the arrow indicates the apical macrosetae on the cymbium). D. Retrolateral view. E–F. Female epigyne (MPUJ_ENT 0061949): E. Ventral view (square showing the median field delimitation). F. Dorsal view. Scale bars: A–B: 200µm; C–D: 500µm; E–F: 100µm. Abbreviations: A, atrium; ApC, appendix of the conductor; C, conductor; CO, copulatory ducts; E, embolus; EB, embolus base; FD, fertilization ducts; MA, median apophysis; MFP, median field plate; RTA, retrolateral tibial apophysis; S, spermathecae; SD, spermatic ducts; SR, seminal receptacles; St, subtegulum; VTA, ventral tibial apophysis.

FIGURE 13. Tenedos barronus (Chamberlin, 1925). A–B. Male palp (MPUJ_ENT 0062001): A. Ventral view. B. Retrolateral view. C–D. Female epigyne (MPUJ_ENT 0061949): C. Ventral view. D. Dorsal view. Scale bars: A–B: 200µm; C–D: 500µm. Abbreviations: A, atrium; ApC, appendix of the conductor; C, conductor; CD, copulatory ducts; E, embolus; FD, fertilization ducts; MA, median apophysis; MFP, median field plate; RPC, retrolateral process of the cymbium; RTA, retrolateral tibial apophysis; S, spermathecae; SD, spermatic ducts; SR, seminal receptacles; VTA, ventral tibial apophysis.

FIGURE 14. Tenedos barronus (Chamberlin, 1925). A–F. Male palp (MPUJ_ENT 0062009), SEM images:A. Ventral view (arrow indicates the apical macrosetae on the cymbium). B. Retrolateral view. C. Median apophysis (arrow indicates the reduced posterior branch of the median apophysis). D. Basal surface of the tegulum showing the BTM. E. Retrolateral trichobothriae on the cymbium. F. Detailed trichobothria on the cymbium. Abbreviations: A, atrium; ApC, appendix of the conductor; C, conductor; BTM, basal tegular membrane; E, embolus; MA, median apophysis; RPC, retrolateral process of the cymbium; RTA, retrolateral tibial apophysis; St, subtegulum; T, tegulum; VTA, ventral tibial apophysis.

FIGURE 106. Distribution map of the species belonging to barronus species group in Colombia.