Araneopedis gibbae, Mesibov, 2025

Mesibov, Robert, 2025, Dalodesmid millipedes from alpine and subalpine habitats in New South Wales and Victoria, Australia (Diplopoda, Polydesmida, Dalodesmidae), ZooKeys 1262, pp. 303-333 : 303-333

publication ID

https://doi.org/10.3897/zookeys.1262.176273

publication LSID

lsid:zoobank.org:pub:FCCCF129-31BF-4258-BF12-1D1887B901AA

DOI

https://doi.org/10.5281/zenodo.17880973

persistent identifier

https://treatment.plazi.org/id/91551C21-BD88-5E86-8418-7B8849829B65

treatment provided by

ZooKeys by Pensoft

scientific name

Araneopedis gibbae
status

sp. nov.

Araneopedis gibbae sp. nov.

Figs 5 B View Figure 5 , 7 View Figure 7 , 15 A View Figure 15

Type material.

Holotype. Male, Howitt Plains (Vic), 0.19 km W by N of Mount Howitt carpark, site HS 22-C-L 3 , -37.2045, 146.6779 ± 25 m, 1610–1630 m, coll. Nicholas Porch and Heloise Gibb, 2024-03 - 01, 1 m 2 litter sample from closed shrubby subalpine woodland, NMV K 16495 GoogleMaps . Paratypes. 3 M, 3 F, details as for holotype, NMV K 16497 GoogleMaps ; 1 M in 95 % EtOH, same details, NMV K 16496 GoogleMaps .

Additional material.

None.

Diagnosis.

Adult males distinguished from A. buffalo sp. nov. by the posterior rings being of similar size to anterior rings vs enlarged, and by the much smaller body size; from A. dargo sp. nov. by the lateral and medial branches of the gonopod telopodite being equally tall vs lateral branch much shorter than medial branch; from A. porchi sp. nov. by the divided vs undivided lateral branch; and from A. bogong sp. nov. by the lack of a wide distal-facing concavity in the solenomere.

Description.

As for the genus, with the following details. Male / female length ca 7 / 7 mm, maximum midbody width 0.6 / 0.7 mm, midbody metatergite width ca 1.3 × prozonite width.

Telopodite base with upturned basal margin (Fig. 7 A View Figure 7 ), sparsely setose. Lateral branch arising lower on telopodite than medial branch + solenomere at ca 1 / 2 telopodite height, somewhat flattened mediolaterally, curving anterodistally, divided at ca 1 / 2 branch height into medial process and shorter lateral process with two posteriorly directed subapical teeth; medial process expanded medially as rounded tab anterior to medial branch tab, then extending distally with thin, mediolaterally flattened, pointed apex. Medial branch extending distally, then curving anterodistally and expanding into bulbous section with posteriorly directed spine on posterior surface; distal to bulbous section tapering and curving laterally, with a second posteriorly directed spine on posterior surface. Lateral and medial branches reaching same height overall. Solenomere on posterior telopodite surface, thin and subcylindrical, curving first anteriorly, then distolaterally, the tip curving posterodistally; prostatic groove opening at end of tip. On anterior surface of telopodite, a mediolaterally flattened, subquadrate tab arising at level of medial branch origin, directed anteriorly with distal corner projecting.

Name.

Noun in the genitive case, in honour of Heloise Gibb (Deakin University), co-collector of this species. Gibb is a community ecologist with a strong interest in invertebrate conservation.

Distribution.

Collected near Mt Howitt in the Victorian mountains (Fig. 15 A View Figure 15 ), in subalpine woodland from 1610 to 1630 m.

Remarks.

This species is very similar to A. buffalo sp. nov. in gonopod structure, but the male is substantially smaller (Fig. 5 A, B View Figure 5 ) and the posterior rings are not proportionally larger than the anterior rings. The medial branch of the gonopod telopodite also differs from that of A. buffalo sp. nov. in having a subterminal, posteriorly directed spine rather than a terminal one.

Kingdom

Animalia

Phylum

Arthropoda

Class

Diplopoda

Order

Polydesmida

SubOrder

Dalodesmidea

Family

Dalodesmidae

Genus

Araneopedis