Coenypha foliacea Machado & Grismado, 2023

Machado, Miguel, Previato, Thales, Grismado, Cristian J. & Teixeira, Renato, 2023, Taxonomic review of the Andean crab spiders genus Coenypha Simon, 1895 (Thomisidae: Stephanopinae), Zootaxa 5306 (3), pp. 301-330 : 320-323

Coenypha foliacea Machado & Grismado sp. nov.

Figs 10 A–F , 11 A–D , 14C

Type material: Holotype: female, Cautín : Temuco: Cerro Ñielol [38°56’56.12”S, 72°19’52.01”W, Araucanía, Chile], January 1989, M. Ramírez ( MHNS 8375 ).

Paratypes: 1 male, Monumento Natural Contulmo [38°0’51.55”S, 73°10’48.24”W, Purén, Malleco,Aracucanía, Chile], 19 December 1998, Ramírez, M. J.; Compagnucci, L. A.; Grismado, C. J. & Lopardo, L. ( MACN-Ar 18705 ) ; 1 female, Cerro Ñielol [38°43’27.08”S, 72°35’18.33”W, Temuco, Cautín, Araucanía, Chile], 21January1991, E. Maury ( MACN-Ar 18706 ) .

Other material examined. Two immatures collected with the holotype, presumably belong to the same species ( MHNS).

Etymology. The specific name derives from the latin word foliacea , which means “leaf-shaped”, referring to the shape of the opisthosoma of this species that, combined with the cryptic coloration of the individuals, resembles a dry leaf, adjective.

Diagnosis. The females of C. foliacea sp. nov. resemble those of C. ditissima by their relative body size and shape of opisthosoma, however, they can be easily recognized by their enlarged femora I bearing a pair of sockets each, accommodating two hyaline and plumose macrosetae ( Fig. 10A ). The prosoma of C. foliacea sp. nov. also differs from C. ditissima by its more flattened profile, while the epigynum has a wider septum, copulatory openings with narrower entrances, shorter copulatory ducts and larger spermathecae ( Figs 10C‒D ). Males of C. foliacea sp. nov. are recognized by the presence of a single prolateral macroseta on cymbium ( Fig. 11C ), which also presents a retrolateral concavity/arching to accommodate the terminal portion of the embolus ( Fig. 11D ), similar to what is observed in C. ditissima . However, in C. foliacea sp. nov. the embolus is shorter and less coiled.

Description. Female (Holotype MHNS 8375): Anterior eye row recurved and posterior row slightly recurved; MOQ area covered by many whitish setae ( Figs 10A, B ). Prosoma light brown on the sides and darker on the median thoracic area and cephalic region ( Fig. 10A ). Anterior legs (I and II) predominantly light-brown and posterior ones (III and IV) dark-brown from the distal portion of femora until the tarsi; proximal portion of femora yellowish ( Fig. 10A ). Opisthosoma brown, flattened, with rounded anterior margin and two pairs of posterior projections ( Fig. 10A ). Epigynal plate with wide posterior folds converging in the middle to form an intromittent MSept ( Figs 10C, E ); copulatory ducts hyaline and membranous, leading to a pair of spermathecae with porous distributed on its anterior surface, not grouped on a specific region forming a PG ( Figs 10D, F ). Measurements: eye diameters and interdistances: AME 0.07, ALE 0.12, PME 0.13, PLE 0.14, AME-AME 0.09, AME-ALE 0.05, PME-PME 0.10, PME-PLE 0.08. MOQ length 0.30, MOQ posterior width 0.33, MOQ anterior width 0.20; leg formula: 1243: leg I—femur 2.81/ patella 0.93/ tibia 1.45/ metatarsus 1.18/ tarsus 0.67/ total 7.04; II—2.64/ 0.74/ 1.14/ 0.95/ 0.65/ 6.12; III—1.06/ 0.62/ 0.71/ 0.53/ 0.50/ 3.42; IV—1.41/ 0.63/ 0.98/ 0.78/ 0.57/ 4.37. Prosoma length 2.11, width 2.08, opisthosoma length 2.63, total body length 4.74; clypeus height 0.25, sternum length 0.92, width 0.98, endites length 0.50, width 0.27, labium length 0.23, width 0.42.

Male (Paratype MACN-Ar 18705): Eyes as in the female. Prosoma and opisthosoma entirely dark-brown, anterior legs (I and II) brown, with tibiae slightly curved; leg III entirely yellow and leg IV yellow only on the proximal half of the femora, being the other podomeres dark-brown ( Fig. 11A ). Opisthosoma similar to that of females ( Fig. 11A ). Palp has a cymbium with projected apical portion and oval tegulum ( Fig. 11C ); RTA is thin and acute, while the RTAvbr is conical and almost as long as the RTA ( Fig. 11D ). Measurements: eye diameters and interdistances: AME 0.10, ALE 0.18, PME 0.15, PLE 0.19, AME-AME 0.13, AME-ALE 0.11, PME-PME 0.18, PME-PLE 0.13. MOQ length 0.41, MOQ posterior width 0.51, MOQ anterior width 0.33; leg formula: 1243: leg I—femur 3.15/ patella 1.27/ tibia 2.36/ metatarsus 1.77/ tarsus 0.91/ total 9.46; II—2.63/ 1.09/ 2.00/ 1.40/ 0.84/ 7.96; III—1.69/ 0.99/ 1.10/ 0.90/ 0.78/ 5.46; IV—2.01/ 0.90/ 1.33/ 0.96/ 0.74/ 5.94. Prosoma length 3.35, width 3.15, opisthosoma length 3.37, total body length 6.72; clypeus height 0.29, sternum length 1.33, width 1.30, endites length 0.78, width 0.40, labium length 0.44, width 0.57.

Distribution. CHILE: Araucanía ( Fig. 14C ).

Figures

FIGURE 10. Coenypha foliacea sp. nov., female (MHNS 8375). A–B habitus (A dorsal, B frontal); C, E epigyne ventral; D, F vulva dorsal.

FIGURE 11. Coenypha foliacea sp. nov., male (MACN-Ar 18705).A–B habitus (A dorsal, B frontal); C–D left palp (C ventral, D retrolateral).

FIGURE 14. Distribution records of Coenypha species. A C. antennata (triangles), C. edwardsi (circles); B C. ditissima (squares), C. nodosa (diamonds); C black triangles are C. trapezium sp. nov. (black triangles), C. foliacea sp. nov. (white triangles).