Ptychophallus costaricensis Villalobos 1974
Creators: name: Magalhães, Célio
name: Wehrtmann, Ingo S.
name: Lara, Luis Rólier
name: Mantelatto, Fernando L.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Pseudothelphusidae
Ptychophallus
Ptychophallus costaricensis

description: Ptychophallus costaricensis Villalobos, 1974
(Figs. 16, 17, 80)
Ptychophallus costaricensis Villalobos, 1974: 197, figs. 1–4.— Rodríguez 1992: 184.— Campos & Lemaitre 1999: 560 (map).— Villalobos Hiriart & Álvarez 2008: 297 (in list).
Ptychophallus coastaricensis [sic]— Ng et al. 2008: 176 (in list).
Material examined. COSTA RICA. Cartago Province, Atlantic drainage: 1 male, USNM 1089241, Tapantí National Park, unnamed tributaries, approximately 9 km (road) NW tunnel, 1400 m, 9.72°N 83.78°W, 8–9.vi.1988, C.M. & O.S. Flint Jr. leg.—San José Province, Pacific drainage: 1 male, paratype, UCR-MZ 707, Dota Canton, Santa María, Finca El Cedral, 23.iv.1972, R. Saenz, leg.; 6 males (cw 17.0, cl 11.6 – cw 25.8, cl 16.0), paratypes, UCR-MZ 721, Dota Canton, creek approximately 5.0 km of house at El Cedral Farm, road to Naranjo, 5.v.1972, R. Saenz, V. Ramírez & C. Villalobos leg.; 2 males (cw 23.1, cl 14.0; cw 33.5, cl 20.3), 10 females (cw 18.6, cl 11.8 – cw 25.2, cl 15.2), paratypes, UCR-MZ 720, San Lucas, creek aprox. 5.5 km of house at El Cedral Farm, road to Naranjo, 7.v.1972, R. Saez, V. Ramírez & C. Villalobos leg.; 6 males (cw 15.5, cl 10.1 – cw 29.1, cl 18.0), 4 females, paratypes, UCR-MZ 722, Naranjo, Naranjo River, Guillermo Solís’ farm, 7.v.1972, R. Saenz, V. Ramírez & C. Villalobos leg.; 1 male (cw 33.8, cl 21.4), 1 female (cw 28.2, cl 17.5), paratypes, INPA 1844, same data; 1 male (cw 34.8, cl 20.3), 1 female (cw 26.5, cl 16.8), paratypes, TMNH 6408, San Isidro de El General, Los Tubos Creek, 7.iv.1972, C. Villalobos leg.; 2 males plus 1 G1, paratypes, UCR-MZ 719, San Isidro de El General, Los Tubos Creek, 1 km W Boquete, Adan Bonilla’s farm, 7.iv.1972, V. Juárez leg.; 4 males, 2 females, UCR-MZ 742- 0 1, San Isidro del General, Los Tubos Creek, 1 km W Boquete, Adan Bonilla’s farm, 22.iv.1972, V. Juárez leg.; 1 male, INPA 1858, same data.
Description of gonopod. Straight in mesiocaudal view, apex bent approximately 90° in laterocephalic direction. Marginal suture on mesial side, straight; marginal process rounded, produced beyond distal border of apex. Mesial process small, subtriangular, slightly downturned, with 2 short spines on laterocephalic side, proximal spine slightly sharper than distal spine. Lateral process long, strongly bilobed, approximately 70% of stem length (from proximal opening to caudal border of apex), usually as wide as lateral end of apex, with deep notch in the middle; lateral border with deep median incision, both lobes subequal in size. Distocaudal ridge short, narrow well separated from distal border of lateral process by distinct depression. Apex oblong, narrow, with narrow notch on lateral end. Field of apical spines well developed, facing towards cephalolateral side.
Holotype and type locality. Male, cw 44.4, cl 27.1, UCR-MZ 392. Costa Rica, San José Province, San Isidro del General (Pacific drainage). The holotype could not be found in the UCR-MZ holdings. It is a male originally separated from lot CVS-079-72 (number in C. Villalobos field notes) (Villalobos, 1974), which received the catalogue number UCR-MZ 719. The G1 of one male paratype from this same lot is illustrated in Figs. 15, 16.
Distribution. Ptychophallus costaricensis is distributed on both Atlantic and Pacific drainages of central southern Costa Rica, Cartago and San José Provinces (Fig. 80).
Remarks. Ptychophallus costaricensis is very close to P. micracanthus. They differ by the number of spines on the laterocephalic side of the mesial process (two in P. costaricensis [Fig. 15]; one in P. micracanthus [Fig. 34]), and the development of the marginal process (more developed, reaching beyond the caudal border of apex in P. costaricensis [Fig. 16]; less developed, reaching about the caudal border of apex in P. micracanthus [Fig. 33]). Ptychophallus costaricensis occurs only in central-southern Costa Rica, whereas P. micracanthus is distributed in central Panama.
description: Published as part of Magalhães, Célio, Wehrtmann, Ingo S., Lara, Luis Rólier & Mantelatto, Fernando L., 2015, Taxonomy of the freshwater crabs of Costa Rica, with a revision of the genus Ptychophallus Smalley, 1964 (Crustacea: Decapoda: Pseudothelphusidae), pp. 301-344 in Zootaxa 3905 (3) on page 309, DOI: 10.5281/zenodo.235127