Dibolostethus kattani Means, Bouzan, Martinez-Torres & Ivanov 2023, sp. nov.
Creators: name: Means, Jackson C.
name: Bouzan, Rodrigo S.
name: Iniesta, Luiz Felipe Moretti
name: Martínez-Torres, Daniela
name: Vasquez-Valverde, Luisa F.
name: Brescovit, Antonio D.
name: Ivanov, Kaloyan
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Polydesmida
Chelodesmidae
Dibolostethus
Dibolostethus kattani

description: Dibolostethus kattani Means, Bouzan, Martínez-Torres & Ivanov sp. nov.
urn:lsid:zoobank.org:act: E4B3174C-2DC2-4584-B664-D0E4FB12D6B7
Figs 1–2, 3B–D, 7, 9
Diagnosis
Adults males of D. kattani sp. nov. differ from those of D. sicarius and D. inopinatus sp. nov. based on the presence of two pairs of short, blunt projections on the sternite of the 5 th body ring (Fig. 3D), and the following combination of gonopodal characteristics: solenomere curving with distinct ridge at midway point, tip relatively straight (Fig. 7A, S); prefemoral process slightly thinner basally, with shelf under linear lobe just before apex (Figs 7A, C, PfP); apex with large, tongue-shaped lobe, best seen in anterior view (Fig. 7B).
Etymology
The species is named in honor of one of its first collectors, the late Dr Gustavo Kattan. Throughout his career, Dr Kattan collected myriapod specimens across Colombia and donated them to the Instituto de Ciencias Naturales. Noun in the genitive case.
Type material
Holotype COLOMBIA • ♂; Valle del Cauca, Cali, 15 km vía Cali-Buenaventura; [3.496° N, 76.613° W]; 10 Dec. 1990; C. Murcia and G. Kattan leg.; under leaf litter in tropical forest; ICN-MD-1317 A.
Paratypes COLOMBIA • 2 ♂♂; same collection data as for holotype; ICN-MD-1317B.
Other material
COLOMBIA • 1 ♂; Valle del Cauca, Cali, 16 km vía Cali-Buenaventura; [3.493° N, 76.613° W]; 1800 m a.s.l.; 11 Oct. 1979; C. Murcia and G. Kattan leg.; under log in tropical forest; ICN-MD-1219 • 1 ♂; Valle del Cauca, Cali, 18 km vía Cali-Buenaventura; [3.517° N, 76.621° W]; 1900 m a.s.l.; 10 Nov. 2014; D. Martinez leg.; collected at night at the edge of a road; ICN-MD-1367.
Description
Male (holotype, ICN-MD-1317A)
With characteristics typical for the genus. Coloration (recently preserved in 70% ethanol): body rings dark, reddish brown (nearly purple); head light brown; legs yellowish ocher; telson reddish, with posterior margin (= spinnerets region) yellowish (Fig. 1). Antennae broken. Head: epicranial macrosetae 2–2, interantennal macrosetae 1–1, frontal macrosetae 2–2. Sternites: 4 th body ring with two robust, conical, blunt projections, separated along entire length (Fig. 2B); 5 th body ring with two pairs of short, blunt projections, the anterior pair more conspicuous (Fig. 3D). Gonopod aperture on 7 th body ring oval, rim notably projecting above sternite (0.67 mm), with a deep U-shaped concavity (0.3 mm) on posterior margin.
GONOPODS (Fig. 7). Gonocoxae rounded, equivalent to about half the length of the telopodite; not prominent in ectal view, with two macrosetae on dorsum. Cannula hook-shaped, broken in the holotype. Solenomere long, slender, unbranched, curving with distinct ridge at midway point, falciform at apex, tip straight (Fig. 7, S). Prefemoral process: thin at base, with shelf (Fig. 7A, Sh) under linear lobe just before apex (Fig. 7A, Lb); apex with large, tongue-shaped lobe, best seen in anterior view (Fig. 7B, PfP). BODY MEASUREMENTS (mm). Total length 29.33, total width 2.10. Collum: length 0.77, width 1.55. Podomere length of 10 th body ring (1–7): 0.29, 0.56, 1.15, 0.52, 0.66, 1.05, 0.11. Gonopod aperture: length 0.50, width 0.86. Gonopod: length 1.21, width 0.96. Gonocoxae: length 0.54, width 0.59. Telopodite: length 1.19, width 0.42. Telson length 0.98.
Female
Unknown.
Distribution
Only known from the Valle del Cauca Department, Colombia (Fig. 9).
description: Published as part of Means, Jackson C., Bouzan, Rodrigo S., Iniesta, Luiz Felipe Moretti, Martínez-Torres, Daniela, Vasquez-Valverde, Luisa F., Brescovit, Antonio D. & Ivanov, Kaloyan, 2023, A review of the previously monotypic tribe Dibolostethini (Chelodesmidae: Chelodesminae) with description of two new species and a summary of the Chelodesmidae of the Tropical Andes Biodiversity Hotspot, pp. 65-85 in European Journal of Taxonomy 885 (1) on pages 76-78, DOI: 10.5852/ejt.2023.885.2189, http://zenodo.org/record/8205500