Hylekobolus albicollaris Wesener, 2009

Wesener, Thomas, Enghoff, Henrik & Sierwald, Petra, 2009, Review of the Spirobolida on Madagascar, with descriptions of twelve new genera, including three genera of ' fire millipedes' (Diplopoda), ZooKeys 19 (19), pp. 1-128 : 108-109

publication ID

https://doi.org/ 10.3897/zookeys.19.221

publication LSID

lsid:zoobank.org:pub:C473F9F6-1AE7-4B3F-B17F-CA1C2709010C

DOI

https://doi.org/10.5281/zenodo.3791479

persistent identifier

https://treatment.plazi.org/id/1E02878D-956E-4FFB-8175-15B8ECB7D5F6

taxon LSID

lsid:zoobank.org:act:1E02878D-956E-4FFB-8175-15B8ECB7D5F6

treatment provided by

Plazi

scientific name

Hylekobolus albicollaris Wesener
status

sp. n.

Hylekobolus albicollaris Wesener, sp. n.

urn:lsid:zoobank.org:act:1E02878D-956E-4FFB-8175-15B8ECB7D5F6

Material examined: 18 ♂, 23 ♀, 18 imm. Holotype: 1 ♂ (35 mm long), FMMC W084 , Western slope of Vohimena Mountains, Ivorona, rainforest, 114 m, 24°50.026’ S, 46°56.943’ E, leg. T. Wesener et al., 23.V.2007 GoogleMaps Paratypes: 1 ♂, 1 ♀, FMMC W084 , same data as holotype GoogleMaps ; 1 ♂, 1 ♀, ZMUC W084 View Materials , same data as holotype GoogleMaps ; 1 ♂, ZMH W084 View Materials , same data as holotype GoogleMaps ; 1 ♂, 1 ♀, CAS W084 View Materials , same data as holotype GoogleMaps ; 1 ♂, ZSM W084 View Materials , same data as holotype GoogleMaps .

Other material examined: 2 ♂, 9 ♀, 3 imm., W089, same data as holotype, University Antananarivo GoogleMaps ; 1 ♀, FMMC W048 D, Andohahela, Isaka-Ivondro Sud , rainforest, 46 m, 24°49.690’ S, 46°51.971’ E, leg. T. Wesener et al., 08.VI.2007 GoogleMaps ; 5 ♂, 5 ♀, 7 imm., FMMC W008 , Ambatotsirongorongo Mountain, Petit Lavasoa , rainforest, 668 m, 25°05.021’ S, 46°46.110’ E, leg. T. Wesener et al., 21.V.2007 GoogleMaps ; 5 ♂, 5 ♀, 8 imm., W008, same data as previous, University Antananarivo GoogleMaps .

Differential diagnosis: the colour pattern of Hylekobolus albicollaris is unique for Malagasy species of Spirobolida and allows an easy identification in the field. For a separation of H. albicollaris and H. griseus see above.

Description. Measurements: males with 42–45 rings, 33–36 mm long, 2.7–3.1 mm wide. Females with 42–46 rings, 30–36 mm long, 3.0– 3.6 mm wide.

Coloration: anterior part of head, entire collum and telson as well as posterior margin of body rings, legs and antennae white ( Figs 53C View Figure 53 , 58A, C View Figure 58 ). Posterior part of head and anterior 2/3 of body rings dark grey to black ( Figs 53C View Figure 53 , 58A View Figure 58 ). Eyes with 32–34 ocelli ( Fig. 58A View Figure 58 ).

Anterior gonopod sternite basally wide, apically elevated into a slender, triangular lobe with a well-rounded tip ( Fig. 58D View Figure 58 ). Mesal coxite process slender and protruding ( Fig. 58D View Figure 58 ). Apical process of telopodite large and well-rounded. Retrorse margin wide, widely projecting above telopodite margin ( Fig. 58F View Figure 58 ); margin basally of apical process not projecting ( Fig. 58F View Figure 58 ).

Posterior gonopods telopodite bent 90° ( Fig. 58G View Figure 58 ). Lateral margin without a projection (w, Fig. 58E View Figure 58 ). Apical process (x) wide, swollen and membranous ( Fig. 58E View Figure 58 ). A membranous lobe (y) present, in posterior view overlapping part of sperm canal ( Fig. 58E View Figure 58 ). Projection of sperm canal (z) extraordinary long and slender, twice as long as apical process ( Fig. 58G View Figure 58 ).

Distribution and ecology: this species was found in the isolated Ambatotsirongorongo Mountain, the Andohahela Isaka-Ivondro corridor as well as on the western slopes of the Vohimena Mountains ( Fig. 54 View Figure 54 ). H.brachiosauroides occurs sympatrically at all three sites. H. albicollaris sp. n. was not found at the Malio sites in the southern Anosy Mountains, the eastern slopes of the Vohimena Mountains or in the lowland littoral rainforests of Mandena and Sainte Luce, where the species is replaced by H. griseus sp. n.

Etymology: albicollaris refers to the white collum ( Fig. 53C View Figure 53 ) of this species, a unique feature for Malagasy Spirobolida .

ZMUC

Zoological Museum, University of Copenhagen

ZMH

Zoologisches Museum Hamburg

CAS

California Academy of Sciences

ZSM

Bavarian State Collection of Zoology