Abiliodesmus Bouzan & Iniesta & Brescovit 2021, n. gen.
Creators: name: Bouzan, Rodrigo Salvador
name: Iniesta, Luiz Felipe M.
name: Brescovit, Antonio Domingos
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Polydesmida
Chelodesmidae
Abiliodesmus

description: Abiliodesmus n. gen.
urn:lsid:zoobank.org:act: B2B6B0EC-FF13-4C6F-A26B-970C9B20002E
Type species. Arthrosolaenomeris planaltensis Schubart, 1960.
Diagnosis. Males of Abiliodesmus n.gen. differ from those of other Arthrosolaenomeridini genera by the combination of the following characters: slight dorsal lobe on leg prefemur (Figs 31C–D); lateral macrosetae dispersed on the gonocoxae, in mesal view (Fig. 32F); cingulum with a basal position (Fig. 20F); and presence of a membranous lateral flap at the apex of the solenomere (Fig. 22D) (absent in Abiliodesmus mapinguari n. sp.).
Description. General characters: Body length between 34.63 mm (A. defensor comb. nov.) and 69.15 mm (A. mapinguari n. sp.). Coloration (specimens long preserved in 70% ethanol) variable between species, ranging from ocher to reddish brown, paranota tip and posterior border of the metaterga slightly whitish. Gnathochilarium: lingual plate covered completely by sparsely setae; mentum only centrally covered by setae, with smooth edges and stipes covered by sparsely setae. Body alignment of paranota in posterior view curved ventrally (straight in A. cataractae comb. nov and A. defensor comb. nov.). Sternite of the fourth segment with a pair of projections, sternite of the fifth with two pairs of projections covered by setae, the posterior pair less conspicuous. Sternite of sixth body ring without ventral projections (present in A. mapinguari n. sp.); seventh with a pair of ventral projections (absent in A. cataractae comb. nov.) and post-gonopodal sternites with two pairs of acuminate ventral projections (Fig. 30F) (absent in A. cataractae comb. nov. and rounded in A. mapinguari n. sp.). Paranota form: round to slightly rectangular (Figs 20B, 23B). Legs: without modifications beyond a slight dorsal lobe on prefemur; thin setae on the ventral part of the podomeres in the anterior legs (Fig. 31D).
Male characters: Leg pair of the third body ring with the coxae presenting the rectangular genital papilla. Gonopod aperture on seventh body ring with the posterior margin excavated and with a small projection (absent in A. mapinguari n. sp.). Gonopods: gonocoxae equivalent to about half the length of the telopodite, cylindrical, without a spiniform process. Prefemoral process: elongate and thin with a dorso-basal process (Fig. 20D). Cingulum in a basal position (Fig. 20F). Solenomere long with apex ascending and lateral membranous expansion (Fig. 21D) (absent in A. mapinguari n. sp.).
Female characters: Vulvae (Figs 24E–F): oval-shaped, having different proportions in lateral view.
Distribution. States of Tocantins, Goiás and São Paulo, Brazil (Fig. 25).
Etymology. The genus name is taken as a noun in apposition. Name in honor of a very important person in the life of the first author, considered a great storyteller, with the combining stem “-desmus,” meaning band, commonly used in generic names in Polydesmida.
Composition. Abiliodesmus planaltensis comb. nov. (Schubart, 1960); Abiliodesmus cataractae comb. nov. (Hoffman, 1976); Abiliodesmus defensor comb. nov. (Hoffman, 1976); Abiliodesmus mapinguari n. sp.
description: Published as part of Bouzan, Rodrigo Salvador, Iniesta, Luiz Felipe M. & Brescovit, Antonio Domingos, 2021, Cladistic analysis and taxonomic review of the millipede tribe Arthrosolaenomeridini Hoffman, 1976 (Polydesmida: Chelodesmidae), pp. 201-256 in Zootaxa 4970 (2) on pages 235-236, DOI: 10.11646/zootaxa.4970.2.1, http://zenodo.org/record/4761544