Atelomastix nigrescens Attems
Creators: name: Edward, Karen L.
name: Harvey, Mark S.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Spirostreptida
Iulomorphidae
Atelomastix
Atelomastix nigrescens

description: <i>Atelomastix nigrescens</i> Attems Figs. 4, 10–22, 67, 116–119. <i>Atelomastix nigrescens</i> Attems 1911: 195–196, Figs. 81–84; Attems 1914: 293; Chamberlin 1920: 167; Verhoeff 1924: 133. <b>Type material:</b> AUSTRALIA: Western Australia: 1 male syntype, Jarrahdale, Hamburger südwest-australischen Forschungsreise, Station 129 [32°20’S, 116°03’E], 19–20 September 1905, W. Michaelsen and R. Hartmeyer (ZMB 5163); 1 female syntype, Lunenberg [now Lunenburgh River, 33°13’S, 115°54’E], Hamburger südwest-australischen Forschungsreise, Station 138, 22 September 1905, W. Michaelsen, R. Hartmeyer (ZMH). <b>Other material examined:</b> AUSTRALIA: Western Australia: 4 males, Boddington, Forestry Department, 33°13’S, 116°05’E, 8 May 1980, pitfall trap, D. Halford, M. Sawle (WAM T 47924); 2 males, 2 females, SW. of Boddington, Worsley Alumina, 33°03’S, 116°10’E, hand collected at night, 31 May 2006, J. Hynes (WAM T 77052 – T77053, T85869); 6 males, 4 females, Mount Cooke, 32°15’00”S, 116°10’48”E, 7 August 1990, M.S. Harvey, J.M. Waldock, M. Peterson (WAM T47900, T47901, T47906); 1 male, Mount Cooke, 32°15’00”S, 116°10’48”E, 31 July 1991, pitfall trap, M.S. Harvey, J.M. Waldock (WAM T 47914); 3 males, 10 females, Mount Cooke, 32°15’00”S, 116°10’48”E, August 2003, hand collected, M.S. Harvey <i>et al.</i> (WAM T 69772); 1 male, Jarrahdale mine area, 32°17’42”S, 116°08’18”E, April 1998, pitfall trap, L. Ashby (WAM T 47942); 2 males, Churchmans Brook, 32°09’S, 116°05’E, 16 May 1996, hand collected, O. Mueller (WAM T 47913); 3 males, 9 females, W. of Collie, Labour Road, 33°15’31"S, 116°03’37"E, 21 May 2007, hand collected, W. Bancroft (WAM T 83392). <b>Diagnosis:</b> <i>Atelomastix nigrescens</i> differs from all other species of <i>Atelomastix</i> in the shape and size of the lateral process of sclerite <i>c</i> and the shape of sclerite <i>b</i>. This species exhibits a slight medial bifurcation of sclerite <i>c</i> which is assymmetrical, the elongate lateral process is subdistally curved, tapers to a point, and is oriented medially at a similar height to the curved distal tip of sclerite <i>b</i>. The distal tip of sclerite <i>b</i> is not significantly enlarged, is of similar shape and size to that of sclerite <i>c</i>, and curves to come into contact with the distal tip of sclerite <i>c</i>. <b>Description:</b> <i>Male (WAM T85869).</i> Colour: generally dark brown in colour, head and mouthparts fawn, legs chocolate brown; prozonites chocolate brown; metazonites mottled dark brown in preserved specimens. Body: ca. 35 mm long and ca. 1.9 mm wide at collum. With 49 trunk segments, 87 pairs of legs, last 2 segments without legs. Head: with 37 ocelli (Fig. 67), arranged in 7 rows (1: 2: 5: 5: 7: 8: 9). Gonopods: anterior gonopods (Figs. 116, 117) heavily sclerotised, 2.3 times longer than broad; sclerite <i>a</i> with swollen base that forms broad, curved distal hood; upper distal face of sclerite <i>a</i> with 20 short blunt setae; pseudoflagellum elongate and visible beneath distal hood; sclerite <i>b</i> curved distally forming a narrow rounded tip, with 6 setae; basal process of sclerite <i>b</i> wider than long, 0.02 times length of main process; sclerite <i>c</i> not bifurcate, curved sub-distally, with 8 setae; group of 13 short setae sub-basally on sclerite <i>c</i>; anterior gonopods inconspicuous, small, with several small setae on interno-lateral face of each gonopod. Dimensions (mm): male, WAM T85869: length ca. 35, width ca. 1.9; L/W=18.4; sclerite <i>a</i> 1.472 / 0.641, setae 20; sclerite <i>b</i> 0.538, basal process of sclerite <i>b</i> 0.035, setae 8; sclerite <i>c</i> 0.976, setae 8. <i>Female</i>. Similar to male, other than sexual characters, and slightly larger. <b>Distribution and habitat:</b> <i>Atelomastix nigrescens</i> was originally described from Jarrahdale and Lunenberg in southwestern Australia (Attems 1911). This species is fairly common and widespread in jarrah (<i>Eucalyptus marginata</i>) forests within the Darling Range (Fig. 4).
description: Published as part of <i>Edward, Karen L. &amp; Harvey, Mark S., 2010, A review of the Australian millipede genus Atelomastix (Diplopoda: Spirostreptida: Iulomorphidae) 2371, pp. 1-63 in Zootaxa 2371 (1)</i> on page 29, DOI: 10.11646/zootaxa.2371.1.1, http://zenodo.org/record/5312214
description: {"references": ["Attems, C. G. (1911) Myriopoda exkl. Scolopendridae. In: Michaelsen, W. &amp; Hartmeyer, R. (Eds.) Die Fauna Sudwest- Australiens. Gustav Fischer, Jena, pp. 147 - 204.", "Attems, C. (1914) Die indoaustralischen Myriapoden. Archiv fur Naturgeschichte, (A) 80, 1 - 398.", "Chamberlin, R. V. (1920) The Myriopoda of the Australian region. Bulletin of the Museum of Comparative Zoology, 64, 1 - 269.", "Verhoeff, K. W. (1924) Results of Dr. E. Mjoberg's Swedish Scientific Expeditions to Australia 1910 - 1913. 34. Myriapoda: Diplopoda. Arkiv for Zoologi, 16, 1 - 142."]}