Syspira medialuna, Brescovit & Sánchez-Ruiz & Bonaldo, 2018

Brescovit, Antonio D., Sánchez-Ruiz, Alexander & Bonaldo, Alexandre B., 2018, On the spider genus Syspira Simon, 1895 (Araneae: Miturgidae) in the Caribbean: four new species from Dominican Republic, Zootaxa 4370 (1), pp. 57-66 : 62-63

Syspira medialuna sp. nov

Figs 5A −D , 6A −E , 7

Types. Holotype ♂ from Reserva Científica Ébano Verde , 19°1'56.8"N 70°32'30.9"W, 1029 m, Constanza, Province La Vega, Dominican Republic, 16‒17.IV.2015, A. Sánchez & J. Cabra ( IBSP 168415 ) . Paratypes: 1♀ from the same locality, 16–17.IV.2015, A. Sánchez & J. Cabra ( IBSP 168416 ) ; 1♀ with same data ( MNHNSD 09.1541 ) .

Other material examined. Dominican Republic. Province La Vega, Constanza, Reserva Científica Ébano Verde, 19°1'56.8"N 70°32'30.9"W, 1029 m, 1♀, 16–17.IV.2015, A. Sánchez & J. Cabra ( IBSP 168417 ; for SEM).

Etymology. The specific name alludes to the half-moon shape (media luna in Spanish) of the retrolateral cymbial groove in the male palp. Media Luna is also a delicacy typical from Argentina, especially from Buenos Aires, which are very appreciated by the authors.

Diagnosis. Males of Syspira medialuna are easily distinguished from other Dominican species by the short, truncated tip of the retrolateral tibial apophysis and by the relatively small median apophysis ( Figs 5A‒B ). Females are distinguished from other Dominican species by the epigynal plate projected medially, with rounded anterior borders ( Figs 5C , 6E ).

Description. Male (Holotype). Coloration as in Syspira cimitarra . Total length 10.2, carapace length 4.9, width 3.8. Eye diameters: AME 0.21, ALE 0.24, PME 0.23, PLE 0.22. Chelicerae 1.6 long, with 3 promarginal and 2 retromarginal teeth ( Fig. 6A ). Leg measurements: femur I—4.5; II—4.3; III—3.9; IV—5.1. Leg spination: Itibia v2-2 -2, p0, r1-1-0, d0; metatarsus v2-2 -0, p0, r1-1-0, d0; II—tibia v2-2 -2, p0, r1-1-0, d0-2-0, metatarsus v2-2 - 0, p0-1-0, r1-1-0, d0-2-0; III‒IV—tibia v2-2 -2, p1-1-0, r1-1-0, d1-1-0, metatarsus v2-2 -2, p1-1-1, r1-1-1, d1-1-2. Palp: cymbial groove half-moon shaped, distally closed, touching ventral margin of cymbium; retrolateral tibial apophysis short and truncated distally; median apophysis small, cup-shaped; distal projection of embolar base curved and sharp at tip; embolar base covered by sub-quadrangular ventral tegular process, directed proximally ( Fig. 4A −B ).

Female (Paratype, IBSP 168416). Coloration as in male, except palp, orange. Abdomen with dorsal white spots and ventrally orange, including the spinnerets. Total length 10.7, carapace length 5.2, width 3.8. Eye diameters: AME 0.21, ALE 0.21, PME 0.25, PLE 0.24. Chelicerae 2.3 long, with teeth as in male ( Fig. 6B ). Leg measurements: femur I—3.9; II—3.8; III—3.4; IV—4.5. Tricobothrium capsulated, striated transversally ( Fig. 6D ). Palp haired distally ( Fig. 6C ), spination: patella p1; tibia p2-1-0, d1-1-0; tarsus p1-0-0, r1-1-0, d1-0-0. Leg spination: I—tibia v2-2 -0, p0, r0, d0, metatarsus v2-2 -2, p0, r0, d0; II—tibia v1 r-1r-2, p0, r0, d0, metatarsus v2-2 - 0, p0, r0, d0; III—tibia v2-2 -2, p1-1-0, r1-1-0, d1-1-0, metatarsus v2-2 -1, p1-1-0, r1-1-0, d2-2-0; IV—tibia v2-2 -2, p1-1-0, r1-1-0, d1-1-0, metatarsus v2-2 -2, p1-1-1, r1-1-1, d2-2-2. Epigynum: Atrium small, triangular; primary spermathecae small and rounded; secondary spermathecae globose and very small; copulatory ducts very long and coiled; fertilization ducts narrow and larger than primary spermathecae ( Figs 5C −D ; 6E).

Distribution. Known only from Province La Vega, Dominican Republic ( Fig. 7 ).

Figures

FIGURE 4. Syspira jimmyi sp. nov., male, IBSP 168421: A chelicerae, ventral view; B palp, ventral view; C same, detail, distal; D same, retrolateral;E same, cymbial furrow,retrolateral view; F same, detail,embolus and tibial retrolateral apophysis. Abbreviations: EBp—apicalprojection of embolar base; MA—median apophysis.

FIGURE 5. A−D Syspira medialuna sp. nov.: A male, holotype, palp, ventral view; B same, retrolateral view; C female IBSP 168418, epigynum, ventral view; D same, dorsal view. E−F Syspira agujas sp. nov.: E, female holotype, epigynum, ventral view; F same, dorsal view. Abbreviations: EBp—apical projection of embolar base; MA—median apophysis. Scale bar = 0.5 mm.

FIGURE 6. A−E Syspira medialuna sp. nov.: A male, holotype, chelicerae, ventral view. B−E female, IBSP 168417. B chelicerae, ventral view; C palp, prolateral view; D thricobotrium, leg I, dorsal view; E epigynum, ventral view. F Syspira agujas sp. nov.: female IBSP 168409, epigynum, ventral view.

FIGURE 7. Distribution records of Dominican Syspira. Triangle: Reserva Científica Ebano Verde, La Vega (Syspira medialuna sp. nov.); circle: Parque Nacional Valle Nuevo, La Vega (Syspira cimitarra sp. nov. and Syspira jimmyi sp. nov.); diamond: Via las Agujas, San José de Ocoa (Syspira agujas sp. nov.); cross: La Ciénaga, Peravia (Syspira cimitarra sp. nov. and Syspira jimmyi sp. nov.).