Atelomastix tumula, Edward & Harvey, 2010

Edward, Karen L. & Harvey, Mark S., 2010, A review of the Australian millipede genus Atelomastix (Diplopoda: Spirostreptida: Iulomorphidae) 2371, Zootaxa 2371 (1), pp. 1-63 : 37

publication ID	https://doi.org/ 10.11646/zootaxa.2371.1.1
publication LSID	lsid:zoobank.org:pub:6140530D-9F81-4443-AFD1-7EF84005E834
DOI	https://doi.org/10.5281/zenodo.5319970
persistent identifier	https://treatment.plazi.org/id/3B9D5F36-E52B-4A42-894D-3FDC17FB2C03
taxon LSID	lsid:zoobank.org:act:3B9D5F36-E52B-4A42-894D-3FDC17FB2C03
treatment provided by	Felipe
scientific name	Atelomastix tumula
status	sp. nov.

Treatment

Atelomastix tumula View in CoL , sp. nov.

Figs. 6 View FIGURES 4–6 , 74, 135, 136.

Type material: AUSTRALIA: Western Australia: holotype male, Bluff Knoll walking trail, Stirling Range National Park , 34°23’S, 118°15’E, hand collected, 6 April 2004, M.S. Harvey, J.M. Waldock, K.L. Edward, C. Poustie ( WAM T 74317) GoogleMaps . Paratypes: 1 male, collected with holotype ( WAM T 74318) GoogleMaps .

Other material examined: AUSTRALIA: Western Australia: 7 females, collected with holotype ( WAM T 70204) GoogleMaps .

Etymology: The specific name is an adjective based on the type locality, Bluff Knoll (tumulus, Latin, raised mound of earth).

Diagnosis: Atelomastix tumula is generally greenish brown or dark brown with pale bands, and is relatively large in size (body width 2.4 mm, length> 44 mm). This species is similar to A. danksi , A. montana , and A. poustiei as the anterior gonopod sclerite a is broad and concave sub-medially. However, it can be distinguished by the presence of two bifurcations of sclerite c of the male gonopod. This species exhibits a shallow asymmetrical distal bifurcation with a larger medial process and a deep asymmetrical medial bifurcation with a larger lateral process. The distal hood of sclerite a is not as broad as similar species, but is rather deep with the elongate pseudoflagellum entirely exposed.

Description: Male (holotype). Colour: live specimens dark blue-grey with lighter bands between segments; head, antennae, ozopores and legs golden-brown, rest dark brown, prozonites green-brown, metazonites darker brown to pale white in preserved specimens.

Body: ca. 44 mm long and ca. 2.4 mm wide at collum. With 60 trunk segments, 109 pairs of legs, last 2 segments without legs.

Head: with ca. 21 ocelli ( Fig. 74), arranged in 3 rows (6: 7: 8).

Gonopods: anterior gonopods ( Figs. 135, 136) very large, heavily sclerotised and complex in structure, 2.14 times longer than broad; sclerite a with swollen base that forms broad, concave area where pseudoflagellum emerges, and, curved distal hood that is characteristically domed; sub-distal edge of concave area of sclerite a with 6 larger setae; upper distal face of sclerite a with 22 short blunt setae; pseudoflagellum long, elongate and distally visible beneath broadened distal hood; sclerite b elongate and curved, terminating in a blunt, rounded tip, with 0–1 sub-distal setae; basal process of sclerite b large, triangular, tapering to form rounded tip, 0.39 times the length of the main process; sclerite c same height as sclerite b, almost bifurcate with medial section noticeably broad, slightly tapering to blunt concave tip, with 10 setae (n=2) on internal concave face; with group of 6–8 (n=2) fine setae on sub-basal edge of sclerite b instead of single sub-basal setae where sclerites overlap, and group of 10 short setae sub-basally on sclerite c; posterior gonopods inconspicuous, small, with several small setae on interno-lateral face of each gonopod.

Dimensions (mm): holotype male (paratype male, WAM T74317): length ca. 44, width ca. 2.4, L/W=18.4; sclerite a 1.248 / 0.584 (1.152 / 0.558), setae 8 + 6 (8 + 6); sclerite b 0.520 (0.499), basal process of sclerite b 0.204 (0.202), setae 0 (1); sclerite c 0.904 (0.880), setae 3 (8).

Female. Unknown.

Distribution and habitat: Atelomastix tumula is known only from two males and seven females hand collected under rocks along the Bluff Knoll walking trail in the Stirling Range National Park ( Fig. 6 View FIGURES 4–6 ). The habitat consists of moist jarrah ( Eucalyptus marginata ) and marri ( Corymbia calophylla ) forest with a relatively thick understorey.