Dibolostethus kattani Means, Bouzan, Martínez-Torres & Ivanov, 2023

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, European Journal of Taxonomy 885 (1), pp. 65-85 : 76-78

publication ID

https://doi.org/ 10.5852/ejt.2023.885.2189

publication LSID

lsid:zoobank.org:pub:444CE1D2-8098-4CDE-9B97-927CA13FC39F

DOI

https://doi.org/10.5281/zenodo.8206249

persistent identifier

https://treatment.plazi.org/id/E4B3174C-2DC2-4584-B664-D0E4FB12D6B7

taxon LSID

lsid:zoobank.org:act:E4B3174C-2DC2-4584-B664-D0E4FB12D6B7

treatment provided by

Felipe (2023-08-01 14:05:59, last updated 2024-11-27 14:42:01)

scientific name

Dibolostethus kattani Means, Bouzan, Martínez-Torres & Ivanov
status

sp. nov.

Dibolostethus kattani Means, Bouzan, Martínez-Torres & Ivanov sp. nov.

urn:lsid:zoobank.org:act:E4B3174C-2DC2-4584-B664-D0E4FB12D6B7

Figs 1–2 View Fig View Fig , 3B–D View Fig , 7 View Fig , 9 View Fig

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 View Fig ), and the following combination of gonopodal characteristics: solenomere curving with distinct ridge at midway point, tip relatively straight ( Fig. 7A, S View Fig ); prefemoral process slightly thinner basally, with shelf under linear lobe just before apex ( Figs 7A, C View Fig , PfP); apex with large, tongue-shaped lobe, best seen in anterior view ( Fig. 7B View Fig ).

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. GoogleMaps

Paratypes COLOMBIA • 2 ♂♂; same collection data as for holotype; ICN-MD-1317B GoogleMaps .

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 GoogleMaps 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 GoogleMaps .

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 View Fig ). 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 View Fig ); 5 th body ring with two pairs of short, blunt projections, the anterior pair more conspicuous ( Fig. 3D View Fig ). 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 View Fig ). 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 View Fig , S). Prefemoral process: thin at base, with shelf ( Fig. 7A View Fig , Sh) under linear lobe just before apex ( Fig. 7A View Fig , Lb); apex with large, tongue-shaped lobe, best seen in anterior view ( Fig. 7B View Fig , 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 View Fig ).

Gallery Image

Fig. 1. Dibolostethus kattani Means, Bouzan, Martínez-Torres & Ivanov sp. nov., ♂ (ICN-MD-1367), habitus. Scale bar = 5 mm.

Gallery Image

Fig. 2. Scanning electron microscope images of Dibolostethus Hoffman, 2009 showing somatic characters. Dibolostethus kattani Means, Bouzan, Martínez-Torres & Ivanov sp. nov., paratype, ♂ (ICN- MD-1317B). A. Body rings 9th and 10th, red rectangle = median metazonal sulcus. B. Venter of 4th body ring, showing paired sternal projections, red oval = stigma. C. Venter of head, showing narrow gnathochilarium. D. Tip of seventh antennomere, red arrow = narrow slit connecting pocket containing sensilla basiconica and sensory cone area.

Gallery Image

Fig. 3. Dibolostethus Hoffman, 2009 somatic characters continued. A, E. Dibolostethus sicarius Hoffman, 2009, holotype, ♂ (VMNH110810). B–D. D. kattani Means, Bouzan, Martínez-Torres & Ivanov sp. nov., holotype, ♂ (ICN-MD-1317-1). A. Coxa 2, mesal view, red arrow = gonopore. B. Left leg 4, posterior view, red arrow = tibial ventro-apical projection. C. Left leg of 5th leg pair showing incrassate femur, red arrow = tibial ventro-apical projection. D. Body ring 5, lateral view, red circle = anterior pair of sternal projections. E. Prefemur 5, red arrow = basal pore. Abbreviations: Cx = coxa; Pf = prefemur.

Gallery Image

Fig. 7. Dibolostethus kattani Means, Bouzan, Martínez-Torres & Ivanov sp. nov., holotype, ♂ (ICN- MD-1317A), right gonopod. A. Mesal view. B. Anterior view. C. Lateral view. Red circles = cingulum. Dashed lines = prostatic groove. Abbreviations: Lb = lobe; PfP = prefemoral process; S = solenomere; Sh = shelf.

Gallery Image

Fig. 9. Distribution of Chelodesmidae spp. in the Tropical Andes Biodiversity Hotspot, by country. Note: the type locality of Dibolostethus sicarius Hoffman, 2009 is included for completeness although it falls just outside of the boundaries of the Tropical Andes Biodiversity Hotspot. For information on these taxa see Supp. file 1.

Kingdom

Animalia

Phylum

Arthropoda

Class

Diplopoda

Order

Polydesmida

SubOrder

Leptodesmidea

Family

Chelodesmidae

SubFamily

Chelodesminae

Tribe

Dibolostethini

Genus

Dibolostethus