Paratropis chami, Tauber & Perafán & Pérez-Miles, 2025

Tauber, Emilia, Perafán, Carlos & Pérez-Miles, Fernando, 2025, Hidden cryptic spiders: Eight new species of Paratropis from Colombia and Ecuador (Araneae, Paratropididae), European Journal of Taxonomy 997, pp. 51-76 : 60-62

Paratropis chami sp. nov.

urn:lsid:zoobank.org:act:0BF6AEBE-D166-4D08-8752-10D4F5014BE0

Figs 4–5 , 13 ; Table 4

Differential diagnosis

Differs from most species of the genus except P. lluspiosa sp. nov. and P. cryptica , by the palpal bulb morphology ( Fig. 5 ) which gradually narrows to the tip of the embolus (abruptly constricted in the basal tegulum in other species); tip of the embolus straight. Differs from P. lluspiosa and P. cryptica by the shorter and wider palpal bulb. Additionally, differs from P. celiae and P. manauara by the absence of subapical triangular tooth on the embolus and differs from P. lluspiosa in the presence of large conspicuous abdominal tubercles ( Fig. 4C ).

Etymology

The specific epithet is a noun in apposition, which refers to an ancestral indigenous community named Emberá Chamí, from the region where the species was found.

Type material

Holotype COLOMBIA • ♂; Valle del Cauca, Alcalá, El Corgal, El Topacio ; [4°13′19.9″ N, 75°52′51.4″ W]; 1200 m a.s.l.; Aug. 2014; S. Aliz leg.; ICN-Ar111267 .

Description

Male (holotype ICN-Ar111267)

Total length 10.2, carapace length 5.28, width 5.23; abdomen length 4.71, width 3.36; chelicerae length 2.37. Color (in alcohol): body with soil particles encrusted; carapace, and legs reddish brown, chelicerae dark brown, abdomen grayish brown. Carapace: slightly setose, lateral margins with single line of spiniform setae with a single line of curved setae mixed with disperse clubbed setae; striae conspicuous; caput arched, separated from thoracic region by transverse fovea, straight, width 0.51. Eyes and ocular tubercle: tubercle length 0.82, width 0.93, elevated (height 0.81) and forwardly directed, with few setae. Clypeus absent. Anterior eye row slightly procurved, posterior recurved. Ocular sizes and interdistances: AME 0.28, ALE 0.26, PME 0.13, PLE 0.17, AME–AME 0.1, AME–ALE 0.06, PME–PME 0.47, PME–PLE 0.07, ALE–PLE 0.12, AME–PME 0.06, ALE–ALE 0.72, PLE–PLE 0.69. Chelicerae: short sparse bristles on dorsal and lateral areas, long fine bristles on ventral and anterior area; basal segment with clubbed plumose setae. Cheliceral furrow with two rows of well-developed teeth, 8/8 and 10/11 teeth on promargin and retromargin, respectively. Labium: length 0.89, width 1.06, with 44 cuspules on anterior edge. Labio-sternal groove with two lateral mounds. Maxillae longer than wide, with the anterior prolateral lobe very elongated, conical; with 41/44 cuspules spaced, largely spread over prolatero-ventral border from the inner edge to anterior lobe. Sternum: length 2.27, width 2.7; three pairs of sigillae, anterior subcircular, median and posterior sigillae oval; anterior and median sigillae marginal, posterior submarginal. Anterior edge of sternum with a semicircular area slightly elevated (joined to labio-sternal groove). Legs: cuticle normal. Leg and palpal segments measurements provided in Table 4 . Leg I clearly thicker than the others. Bristles, thorn-like setae. Trichobothria: palp: Ti d7; Ta d4. Leg I: Ti d7; Me d4; Ta d8. Leg II: Ti d7; Me d4; Ta d7. Leg III: Ti d6; Me d4; Ta d6. Leg IV: Ti d5; Me d4; Ta d7. Tarsal pseudoscopula not dense. Tarsal claws: ITC present on leg I; STC with one tooth on all legs. Spination: principally thorn-like setae on all segments. Spines: Palp: 0. Leg I: 0. Leg II: 0. Leg III: 0. Leg IV: 0.

ABDOMEN. With large, prominent tubercles, each emitting from its apex a plumose, bacilliform seta ( Fig. 4 ). These tubercles are disposed along the dorsal face of the abdomen ( Fig. 4C ) and in the posterior and lateral regions of ventral face ( Fig. 4D ). Book lung apertures projected, oval, sclerotized. Palp: cymbium with two unequal lobes separated by a sclerotized groove. Palpal bulb subconical, wide, tegulum-embolus gradually narrowed towards the apex; apex stout but flattened ( Fig. 5 ). Spinnerets: PMS length 0.42; PLS length 2.46, apical segment digitiform. Basal segment of PLS divided in two unequal cuticle plates.

Female

Unknown.

Distribution

Only known from its type locality, Colombia, Valle del Cauca Department, Alcalá ( Fig. 13 ).

Figures

Fig. 4. Paratropis chami sp. nov., holotype, ♂ (ICN-Ar111267). A. Carapace, dorsal view. B. Sternum, ventral view. C. Abdomen, dorsal view. D. Abdomen, ventral view.

Fig. 5. Paratropis chami sp. nov., holotype, ♂ (ICN-Ar111267), left palpal bulb. A. Prolateral view. B. Retrolateral view. C. Dorsal view. D. Ventral view.

Fig. 13. Geographic distribution of the new species of the genus Paratropis Simon, 1889.