Ammonius benoiti Guadanucci & Brescovit 2023, sp. nov.
Creators: name: Gonzalez-Filho, Hector M. O.
name: Guadanucci, José Paulo L.
name: Brescovit, Antonio D.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Barychelidae
Ammonius
Ammonius benoiti

description: Ammonius benoiti sp. nov.
urn:lsid:zoobank.org:act: 6F93B423-FFD3-411C-89BB-DBF8A2C620A0
Figs 8–10
Diagnosis
Ammonius benoiti sp. nov. is differentiated most readily by having six eyes, AME is absent (Fig. 9A–B). Males of A. benoiti can be additionally distinguished from A. pupulus by the thickened embolus with a slight curve at the tip (Fig. 8F–I), the presence of the tibial thorns on the retrolateral side of the palp (Figs 8D–E, 9D), and an apical megaspine on the tibia I (Figs 8J, 9C). Female unknown.
Etymology
The specific name is a patronym in honor of the Belgian arachnologist Pierre L.G. Benoit, for his great contributions to the knowledge of African Barychelidae.
Type material
Holotype IVORY COAST – Appouesso • ♂; 06°35′ N, 003°28′ W; 29 Sep. 1993, R. Jocqué & N. Séabé leg.; RMCA 202482.
Paratype IVORY COAST – Appouesso • 1 ♂; same collection data as for preceding; 1 Dec.1994; RMCA 202354.
Only type material known.
Description
Male (holotype RMCA 202482) Total length: 3.92. Carapace: 1.66 long, 1.32 wide. Thoracic fovea: 0.08 wide, straight. Clypeus 0.03 long. Eye tubercle flat 0.14 long, 0.21 wide. Anterior and posterior eyes row straight (Fig. 9B). Eyes diameters and interdistances: AME absent, ALE 0.08, PME 0.04, PLE 0.05; ALE–PME 0.01, PME– PME 0.01, PLE–PME 0.01, ALE–ALE 0.01. Labium: rectangular, 0.09 long, 0.311 wide, having two
cupules rounded (Fig. 8B). Chelicerae: 9 prolateral teeth and 7 tiny on inner edge. Labiosternal groove shallow, flat, with pair of sigilla. Maxillae: 0.52 long, 0.27 wide, with 20 cuspules. Heel reduced. Anterior lobe short, not projected (Fig. 8B). Sternum 0.97 long, 0.82 wide. Abdomen: 2.26 long, with book lungs semi-circular, elliptical aperture, and book lungs combs absent. Measurements: palp (femur, patella, tibia, cymbium, total): 0.8, 0.4, 0.6, 0.7, 2.5. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 1.3, 0.6, 1, 0.9, 0.7, 4.5; II: 1.1, 0.6, 0.9, 0.9, 0.6, 4.1; III: 1, 0.6, 0.7, 0.8, 0.6, 3.7; IV: 1.5, 0.7, 1.1, 1.1, 0.8, 5.2. Spination: Leg I: femur d1-1-1-0, patella v0-1-0, tibiav0-1-1-1p-1p-1ap, metatarsus v0-1-1ap; II: femur d0-1-0, patella v0-0-1, tibia v0-1-1-0, d0-1p-1, metatarsus v0-1-0-1-1ap; III: femur d0-1-0-1-1p-1ap, patella v0-1p, tibia v0-1-1-1r, p0-1-1-2ap, metatarsus v0-2-1-1p-2-1r-4ap; IV: femur d0-1-1-1p, patella d0-1, tibia v0-1-1-1p-1r-0-1ap, d0-1-0-0-1, metatarsus v0-1-1p-1-2-1-0-0-3ap, d0-1r-0-1p-1ap. Claws: ITC absent. STC on tarsus with teeth on both lateral edges. Scopulae: on metatarsi I–II ⅓ scopulate, metatarsi III–IV absent; on tarsi I fully scopulate, tarsi II ⅓ scopulate and tarsi III–IV 1/5 scopulate. Spinnerets: PMS: 0.28 long. PLS: basal 0.33 long, median 0.31 long, apical 0.23 long. Apical segment digitiform. Tibia I with megaspine curved at apical end on the prolateral side (Figs 8J, 9C).
Palp without tibial concavity. Tibial thorns forming a group of 15 conical spines on the retrolateral side of the tibia (Figs 8D–E, 9D). Cymbium with retrolateral lobe triangular, strongly projected, slightly curved (Fig. 8C–E). Bulb with long embolus slightly curved at the tip, embolar base narrow (Fig. 8F–I).
Habitus as in Fig. 8A–B. Color in alcohol: Carapace and legs dorsally yellowish brown. Eye tubercle black.
Female
Unknown.
Distribution
Ivory Coast (Fig. 10).
description: Published as part of Gonzalez-Filho, Hector M. O., Guadanucci, José Paulo L. & Brescovit, Antonio D., 2023, On the genus Ammonius Thorell, 1899 (Mygalomorphae, Barychelidae): description of the female of A. pupulus, a new species and new distribution records, pp. 113-131 in European Journal of Taxonomy 861 (1) on pages 124-127, DOI: 10.5852/ejt.2023.861.2071, http://zenodo.org/record/7737509