Ammonius pupulus Thorell 1899
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 pupulus

description: Ammonius pupulus Thorell, 1899
Figs 1–7, 10
Ammonius pupulus Thorell, 1899: 10.
Ammonius pupulus – Benoit 1965: 76, figs 1–2.
Amended diagnosis
Ammonius pupulus differs from A. benoiti sp. nov. by having eight eyes (Figs 1D–E, 4B, 5D); by the male palpal bulb with a thin and sinuous embolus (Fig. 2A–D), and by the presence of a tibial concavity in the ventro-prolateral side of the palp (Figs 2E, 3A–B).
Type material
Holotype CAMEROON • ♂; no locality specified; 1891; Y. Sjöstedt leg.; collection Thorell, number 17, now NHRS-GULI37848.
Other material examined
IVORY COAST • 6 ♂♂, 1 ♀; Gagnoa; 6° 8′59.73″ N, 5°57′8.07″ W; 19 Mar. 1993; A. Russell-Smith leg.; pitfall trap, upland rice; RMCA 227221 • 1 ♀ juv.; Kossou; 7°2′12.07″ N, 5°28′56.47″ W; 14 Oct.–11 Nov. 1974; R. Jocqué leg.; RMCA 151844 • 1 ♂; Bouaflé, Koudougou; 6°55′56.20″ N, 5°40′24.15″ W; 26 Feb. 1981; J. Everts leg.; RMCA 169417 • 1 ♀; same collection data as for preceding; 30 Dec. 1980; RMCA 169416.
Description
Male (holotype NHRS-GULI37848)
Total length: 7.43. Carapace: 3.3 long, 2.66 wide. Thoracic fovea: 0.38 wide, straight. Clypeus 0.08 long. Eye tubercle flat 0.29 long, 0.69 wide. Anterior and posterior eyes row straight (Fig. 1D). Eyes diameters and interdistances:AME 0.10, ALE 0.14, PME 0.04, PLE 0.09; ALE–ALE 0.37, ALE–AME 0.06, AME– PME 0.06, PME–PME 0.29, PLE–PME 0.03, AME–AME 0.07, ALE–PLE 0.04. Labium: rectangular, 0.28 long, 0.51 wide, having two cuspules rounded (Fig. 1C). Chelicerae: 9 prolateral teeth and 4 tiny on inner edge. Labiosternal groove shallow, flat, with a pair of sigilla. Maxillae: 1.08 long, 0.66 wide, with 3 cuspules. Heel reduced. Anterior lobe short, not projected (Fig. 1C). Sternum 1.75 long, 1.41 wide. Abdomen: partially damaged, 3.93 long, with book lungs semi-circular, with elliptical aperture, and book lungs combs absent. Measurements: palp (femur, patella, tibia, cymbium, total): 1.9, 1.1, 1.3, 1, 5.3. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 2.7, 1.7, 1.7, 1.8, 1.2, 9; II: 2.2, 1.2, 1.6, 1.4, 1, 7.4; III: 2.2, 1, 1.2, 1.8, 1, 7.2; IV: 2.6, 1.1, 1.9, 2.4, 1.5, 9.5. Spination: palp: tibia d0-1-0-2. Leg I: femur d0-0-1, tibia v0-2-0-1-, d0-2-0-2, metatarsus v0-2-0-2ap; II: femur d-0-1-0-1, tibia v0-1p-0-1-0-2ap, metatarsus v0-0-2-0-2ap; III: femur d-0-1-0-1, patella p0-1-1, tibia v0-3-0-2-1r-1p-0-1p-3ap, metatarsus v0-2-0-1-1-
1, d0-2-1-2-1-2-1-4ap; IV: femur d0-2-0-1, patella p0-1-1, tibia v0-2-0-1p-0-1r-2-2p-0-1-3ap, metatarsus v2-2p-1-0-1-2-1r-, d0-2-0-2-0-1-3ap. Plumose clavate trichobothria in two rows on distal half on all tarsi. Claws: ITC absent. STC on tarsi with teeth on both lateral edges. Scopulae: on metatarsi I ¼ scopulate, metatarsi II–IV absent; on tarsi I fully scopulate, tarsi II ⅓ and III–IV 1/5 scopulate. Spinnerets: PMS: 0.47 long. PLS: basal 0.6 long, median 0.5 long, apical 0.36 long, with pumpkiniform spigots on apical half (Fig. 4A). Apical segment digitiform (Fig. 1F). Tibial apophysis absent.
Palp: tibia with concavity on the ventro-prolateral side of the palp (Figs 2E, 3A–B). Cymbium with retrolateral lobe triangular, strongly projected, and with slight prolateral curve (Figs 2, 3C–D). Bulb globose with a thin embolus, embolar base sinuous (Fig. 2F).
Habitus as in Fig. 1A–B. Color in alcohol: Carapace and legs dorsally yellowish light brown. Eye tubercle black. Abdomen pale with some brown light setae on dorsal side, abdomen pattern absent (Fig. 1F). Spinnerets pale.
Female (RMCA 227221)
Total length: 7.3. Carapace 3.1 long, 2.45 wide. Thoracic fovea: 0.38 wide, straight. Clypeus 0.06 long. Eye tubercle flat 0.17 long, 0.54 wide (Fig. 5D). Anterior and posterior eyes row straight. Eyes diameters and interdistances: AME 0.1, ALE 0.14, PME 0.06, PLE 0.08; ALE–ALE 0.02, ALE–AME 0.02, AME– PME 0.04, PME–PME 0.2, PLE–PME 0.01, AME–AME 0.04, ALE–PLE 0.02. Labium: ellipsoid, 0.23 long, 0.58 wide, having 5 cuspules rounded, two of then lost (Fig. 5C). Chelicerae: 8 prolateral teeth and 11 tiny on inner edge. Labiosternal groove shallow, flat, with pair of sigilla. Maxillae: 0.95 long, 0.65 wide, with 13–20 cuspules in the inner corner. Heel reduced.Anterior lobe short, not projected (Fig. 5C). Sternum 1.86 long, 1.44 wide (Fig. 5F). Abdomen: 4.2 long, with book lungs semi-circular, elliptical aperture, and book lungs combs absent. Measurements: palp (femur, patella, tibia, cymbium, total): 1,7,1.1, 1.3, 1.3, 5.4. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 2.4, 1.6, 1.8, 1.5, 1.3, 8.7; II: 2.5, 1.3, 1.5 1.5, 1.3, 8.1; III: 1.7, 1.1, 1.3, 1.4, 1.2, 6.7; IV: 2.4, 1.3, 1.9, 2.2, 1.6, 9.4. Spination: palp: femur d-0-1, tibia v1-0-1-1-0-2ap. Leg I: femur d0-0-1, tibia v1-0-1-0-2ap, metatarsus v0-1-0; II: tibia v1-0-1-0-2ap, metatarsus v0-1-0-1ap; III: tibia v1-1p-0-1-1p-0-4ap, d-0-1-0-1, metatarsus v0- 1-0-2-1p-1p-0-1-3ap, d0-0-1-2; IV: tibia v1-1p-0-1-2-0-3ap, d-0-2-0-1r, metatarsus v0-0-2-0-1r-1-0- 3ap,d0-2-0-2. Plumose clavate trichobothria in two rows on distal half on all tarsi. Claws: ITC absent. Teeth absent on STC of all legs. Scopulae: on metatarsi I ¼ scopulate, metatarsi II–IV absent; on tarsi I fully scopulate, tarsi II–III ⅓ and IV ¼ scopulate. Spinnerets: PMS: 0.4. PLS: basal 0.55, median 0.5, apical 0.55. Apical segment digitiform (Fig. 5A–B).
Spermathecae: two long receptacles with wide base; each with a globose lobe on the outer side (Fig. 5E).
Habitus as in Fig. 5A–B. Color in alcohol: same as male.
Distribution
Cameroon and 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 116-124, DOI: 10.5852/ejt.2023.861.2071, http://zenodo.org/record/7737509