Actinopus fernandezi, Duniesky, 2019

Duniesky, Rios-Tamayo, 2019, Four new species of Actinopus (Mygalomorphae: Actinopodidae) from Uruguay, Zootaxa 4624 (4), pp. 523-538 : 527-529

publication ID

https://doi.org/ 10.11646/zootaxa.4624.4.5

publication LSID

lsid:zoobank.org:pub:6106ED74-7097-4D00-943B-1E7ACB2C3832

DOI

https://doi.org/10.5281/zenodo.5477643

persistent identifier

https://treatment.plazi.org/id/03DE87F0-FFBF-1911-FF6F-9AAFFCD61586

treatment provided by

Plazi

scientific name

Actinopus fernandezi
status

sp. nov.

Actinopus fernandezi View in CoL n. sp.

( Figs 3 View FIGURE 3 , 10 View FIGURE 10 )

urn:lsid:zoobank.org:act:05CDB14B-861A-4774-8553-26B4DA2C4386

Type material. Uruguay: Salto. Holotype ♂: Río Arapey [30°55′S 57°47′W], 20 April 1974, L.A. de Gambardella ( MNHN 1291 About MNHN ). GoogleMaps

Etymology. The specific name is a patronym in honor of the Cuban malacologist, Alejandro Fernández Velázques, who introduced me to science and shared many field trips.

Other material examined. Know only from the holotype.

Diagnosis. The male of A. fernandezi sp. nov. can be differentiated from those of all other species by the shape of its copulatory bulb ( Fig. 3 View FIGURE 3 F–H) which is, very gracile and slender and the presence of abundant retrolateral spines on tibia II ( Fig. 3E View FIGURE 3 ). Legs with tibia-light colored in alcohol. Females unknown.

Description. ( Figs. 3 View FIGURE 3 A–H). Male holotype (MNHN 1291). Total length: 7.90. Carapace ( Fig. 3A View FIGURE 3 ): length 4.00, width 4.20; cephalic region: length 2.30, width 3.10; clypeus small with one bristle, 11 bristles between PME, 2 behind each PME-PLE. Fovea: length 0.60, width 1.60. Eyes, diameters and interdistances: AME 0.16 (small), ALE 0.26, PME 0.11, PLE 0.16, ocular group length 0.89, anterior width 2.44, 2.07 posterior width; AME-ALE 0.95, PME-PLE 0.16, AME-PME 0.42, ALE-PLE 0.53, AME-AME 0.26. Chelicerae: length 2.00, width 1.20; cheliceral apex with 8 recumbent and elongated bristles over fang base. Rastellum with 6 large marginal blunt spines and 3 small dorsal. Cheliceral furrow ( Fig. 3C View FIGURE 3 ) with 5 large promarginal and 6 retromarginal teeth and 7 denticles, near promarginal teeth. Labium: length 0.58, width 0.79. Maxillae: anterior length 1.11, posterior length 1.75, width 1.27. Sternum: Center flat ( Fig. 3B View FIGURE 3 ): length 3.44, maximum width 2.65, minimum width 0.79. Postlabial sigilla shallow, posterior sigilla well defined. Abdomen: length 4.50, covered by small bristles. PMS: length 0.53; PLS with basal article of length 0.74 (other segments are compressed due to preservation). Spigots: Cannot be observed. Lengths of legs and palp: I: 4.00, 1.80, 2.60, 3.30, 2.00, 13.70. II: 4.20, 1.70, 2.50, 3.30, 2.00, 13.70. III: 3.20, 2.00, 2.00, 3.20, –, ~10.40. IV: 4.30, 2.00, 3.30, 3.50, 2.00, 15.10. Palp: 4.90, 2.30, 4.40,–, 1.00, 12.60. Chaetotaxy: Femora: I–IV, 0, III 2-3 -3-3-3-2-2-3 d (spiniform bristles). Patellae: I 0; II 2 R A; III, 21 P SUP-D ANT + 9 on the margin, 1-1-1-1 D, 5 R A + 11 on the margin; IV, 24 P SUP-D ANT. Tibiae: I, 1-1-2-1-1-1- 2 V POST, 1-1- 1 V, 1- 2 V A ANT, 1-2-1-2- 2 V POST; II, 30 R, 1-1-1-2-1-2- 3 V; III, 1 P, 1 D (1:2 B), 2-1 R (1:3 A), 1-2- 2 V, with apical crown of 19 thorns; IV, 1 P, 2-2- 3 V. Metatarsi: I, 1-1-1-1-1-2-1-1-2- 1 V, 1-1-2-1-1-1- 2 V ANT, 1-2-2-2-2-1-3-4-1- 4 V POST; II, 2-1-1-2-3-2-2- 2 V, 1-1-2-2- 2 V ANT, 1-1-2-3-1-1-4-1- 3 V POST; III, 1-2 R (1:3 A), 1-1-1-1 R SUP (2:3 B),1-1-1-2- 3 V; IV, 1-0-1 P, 2-0-1- 2 V. Tarsi: I, 2-1-2-1-2-1-1 P INF, 1-1-3-4-3-6-4 R INF, 2-1-2-2-2- 3 V; II, 1-1-1-1-2-1-1 P INF, 1-3-1-2-2-2-2-3-4-3-3 R INF, 2-2-0-1-1-1- 2 V; III, foul; IV, 1-2-3-2-4 P INF. Total number of retrolateral spines on tibiae I, II ( Fig. 3E View FIGURE 3 ): 0 and 30, respectively. Palp: tibia long, thin ( Fig. 3D View FIGURE 3 ). Bulb stylized ( Fig. 3 View FIGURE 3 F–H) with ATA little developed and BTA developed, embolus without denticles and with MRk. Scopulae: Tarsi: I–II, sparse 1:2 apical; IV, dense, uniform. Metatarsi: absent. Trichobothria: Tibiae: I 4-4; II 4-5; IV 4-3. Metatarsi: I 10; II 8; IV 5. Tarsi: I 9; II 7; IV 6. Colour: carapace and chelicerae reddish brown. Abdomen brown; booklungs with dark markings. Sternum reddish brown with darker labium and maxillae. Legs like carapace with lighter tarsitibiae; palp like carapace. Spinnerets yellow.

Distribution. Known only from the type locality ( Fig.10 View FIGURE 10 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Actinopodidae

Genus

Actinopus

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