Huasteca Cruz-López and Franckeı 2015

Cruz-López, Jesús A. & Francke, Oscar F., 2019, New species of the cave-dwelling genus Huasteca (Opiliones: Stygnopsidae: Karosinae) ı from Northern Oaxacaı Mexicoı with a SEM survey of the sexually dimorphic areas on legs and structures related to chelicerae in the genus, Journal of Natural History 53 (23), pp. 1451-1464 : 1452-1453

Genus Huasteca Cruz-López and Franckeı 2015

Huasteca Cruz-López and Franckeı 2015: 870 ; Cruz-López and Franckeı 2017: 333; Cruz-Lópezı

2018: 534. Karos (in part): Goodnight and Goodnight 1971: 34; Šilhavý 1974: 185; Reddell 1981: 34; Kury and Cokendolpher 2000: 155; Kury 2003: 238.

Amended diagnosis

Cave-dwelling harvestmenı scutum zeta type (ζ) but with prominent rounded and clear projections on opisthosomal tergite 1ı similar projections are present on posterior corners of scutum and free tergites. Area of lateral channels very highı occupying a large portion in lateral view. Ocularium inconspicuous in the middle of prosoma. Dorsal ornamentation variableı from rugose to tuberculate ( Figure 1 ). Cheliceral-fixed finger with cheliceral comb ( Figure 3 (c)). Apical portion of femur II in males slightly swollenı sometimes patella and basal portion of tibia II also swollen ( Figure 2 ). Stigmatic area shortı T-shapedı narrow in males. Pars distalis of penis compressedı with a thin flimsy laminaı asymmetrical in H. silhavyi . Two pairs of both macrosetae C and A forming a row on lateral margin of pars distalisı two or three pairs of macrosetae D on the base of follis and presence of both small macrosetae E1 and E2 on ventro-apical portion of flimsy lamina plus one additional more basally placed macrosetae E. Follis almost twice as long as wideı with two-lobed lateral projections ( Cruz-López and Francke 2015: figures 47ı 50ı 53 and Figure 5 ).

Type species

Huasteca gratiosa ( Goodnight and Goodnight 1971) ı by original designation.

Figures

Figure 1. Habitus of Huasteca species. (a) male of Huasteca gratiosa. (b) male of Huasteca rugosa. (c) female of Huasteca silhavyi. (d) female of Huasteca kardia sp. nov. Scale bars = 0.5 cm.

Figure 2. Habitus and venter of Huasteca kardia sp. nov. (a) habitus holotype. (b) habitus female paratype. (c) venter holotype. (d) venter female paratype. Dotted line indicates swollen portions of leg II. Scale bars = 1.0 mm.

Figure 3. Chelicera and pedipalp of Huasteca kardia sp. nov. (a) chelicera frontal, male. (b) chelicera mesal, male. (c) cheliceral comb, male. (d) chelicera ectal, male. (e) pedipalp mesal. Scale bars = a and b: 150 µm, c: 50 µm, d and e: 250 µm.

Figure 5. Male genitalia of Huasteca kardia sp. nov. (a) dorsal. (b) lateral. (c) ventral. Macrosetae A-E indicated in the figures, adE = additional macrosetae E. Scale bars = 50 µm.