Tetrablemma mochima Martínez, Flórez, and Brescovit 2020
- Dataset
- Two new species of the armored spider genus Tetrablemma O. P. - Cambridge, 1873 from northern South America (Araneae: Synspermiata: Tetrablemmidae)
- Rank
- SPECIES
- Published in
- Martínez, Leonel, Flórez, Eduardo, Brescovit, Antonio Domingos (2020): Two new species of the armored spider genus Tetrablemma O. P. - Cambridge, 1873 from northern South America (Araneae: Synspermiata: Tetrablemmidae). Zootaxa 4743 (1): 92-102, DOI: 10.11646/zootaxa.4743.1.7
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Arachnida
- order
- Araneae
- family
- Tetrablemmidae
- genus
- Tetrablemma
- species
- Tetrablemma mochima
description
Description. Male (MNRJ 18419). Total body length 0.99, carapace length 0.40, width 0.38, height 0.34. Clypeus height 0.20. Eye diameters and interdistances: ALE 0.05, PLE 0.03; PLE separated by approximately one diameter. Sternum length 0.26, width 0.27. Chelicerae (paturon) length 0.13. Legs: Leg I — femur 0.35 / patella 0.10 / tibia 0.25 / metatarsus 0.18 / tarsus 0.18 / total 1.06; II — 0.30 / 0.07 / 0.21 / 0.15 / 0.16 / 0.89; III — 0.26 / 0.06 / 0.19 / 0.15 / 0.14 / 0.79; IV — 0.35 / 0.10 / 0.28 / 0.17 / 0.16 / 1.06. Abdomen length 0.49, width 0.51. Body coloration orange. Legs yellow-brown. Spinnerets pale yellow. Carapace: cephalothorax finely reticulated, slightly raised, and suboval-shaped; four eyes in one group on a monticule, posterior half of carapace with black ocular base, ALE> PLE, ALE and PLE adjacent; clypeus high and anteriorly projected with the anterior edge rounded; thoracic region with cuticle granulated; Chelicerae with a wide and developed frontal apophysis on the anterior side, and with wide and laminar basal projections; endites subquadrangular-shaped with anterior edge straight and very wide basal edge; labium trapezoidal-shaped, wider than long and with lateral edges projected; sternum rugose, longer than wide, covered with fine setae. Leg cuticle striated, covered with modified setae mainly in metatarsus and tarsus. Opisthosoma: covered with black and fine setae on posterior edge; dorsal scutum oval-shaped and smooth; ventral scutum (pulmonar scutum) finely reticulated and with some fine setae; lateral scutum I very long, extending to the posterior side of the anal plate; postgenital scutum trapezoidal-shaped, long, and narrow, with anterior edge straight, and lateral edges with quadrangular apex; preanal scutum rectangular-shaped and approximately twice as wide as postgenital scutum, with all edges rounded (Fig. 6 A−C). Palp: femur cylindric and long, with some simple setae on the cuticle; patella short; tibia short and very swollen with fine and long setae; cymbium short with long setae and a small organ; bulb large and pear-shaped; spermatic ducts very wide at the base and becoming narrower toward the embolus; embolus long, slightly curved at medial portion and inserted basally, filiform toward distal end; process of the embolic base short, wide, and triangular shaped (Fig. 6 D−E). Female. Unknown.
description
Figure 6 A−E. Types. Holotype ♂ from Parque Nacional Mochima (10 ° 18 ′ 35.77 ″ N; 64 ° 33 ′ 40.45 ″ W), Estado Sucre, Venezuela, XII. 2002, A. Pérez & A. Giupponi leg. (MNRJ 18419).
diagnosis
Diagnosis. Males of Tetrablemma mochima sp. nov. resemble those of T. brignolii Lehtinen, 1981 and T. tatacoa sp. nov. by the presence of a simple process at the base of the embolus (see Lehtinen, 1981: 64, figs 246 a, b; Figs 2 A−B, 4 C−D); however, males of Tetrablemma mochima sp. nov. can be distinguished from those of the other two species by the triangular process at the base of the embolus, approximately 1 / 2 as long as the embolus, and a small embolic process (different in length and shape from those of T. brignolii and T. tatacoa sp. nov.) (Fig. 6 D−E).
distribution
Distribution. Only known from its type locality (Fig. 7).
etymology
Etymology. The specific epithet is referent to the type locality where the species was found. The name is a noun in apposition.