Unixenus corringlensis
| Notice: | This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale):
Citation formats to copy and paste
BibTeX: @article{Short2013ZooKeys278, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Short2013ZooKeys278">{{Citation See also the citation download page at the journal. |
Ordo: Polyxenida
Familia: Polyxenidae
Genus: Unixenus
Name
Unixenus corringlensis Short & Huynh sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Holotype
Female, Corringle State Forest, NSW, 33°22'12"S, 147°15'00"E, 21–26 March 1996, collected by D. Smith, AM KS.119541. Specimen mounted on slides, deposited in AM.
Paratypes
1 male, same collection as holotype, AM KS.119540. 1 female and 1 male subadult stadium VII, Severn State Forest, Atholwood Loop Rd. 29°04'28"S, 151°00'53"E, wet pitfall traps 22 November–13 December 2001, collected by L. Wilkie and H. Smith, AM KS.87406 (male), AM KS.119542 (female). 1 female adult, Newnes State Forest, Birds Rock Flora Reserve, 0.6 km from Sunnyside Ridge Rd., 33°19'43"S, 150°11'33"E, litter sampling 23 Feb 2006, collected by G.A. Milledge, J. Tarnawski and M. Beatson. AM KS.119543. All paratypes mounted on slides and deposited in AM.
Other material:
4 specimens (sex and stadia not determined), Severn State Forest, Atholwood Loop Rd. 29°04'28"S, 151°00'53"E, wet pitfall traps 22 November–13 December 2001, collected by L. Wilkie and H. Smith. AM KS.87400, KS.87410, preserved in ethanol. 2 immature specimens, (sex and stadia not determined), Corringle State Forest, NSW, 33°22'12"S, 147°15'00"E, 21–26 March 1996, collected by D. Smith, AM KS.53604, preserved in ethanol.
1 male stadium VII, Newnes State Forest, Birds Rock Flora Reserve, 0.6km from Sunnyside Ridge Rd., 33°19'43"S, 150°11'33"E, litter sampling 23 Feb 2006, collected by G.A. Milledge, J. Tarnawski and M. Beatson, AM KS.119544, mounted on slide, poor quality.
Etymology
For Corringle State Forest, the type locality; adjective.
Diagnosis
Similar to Unixenus attemsi with biarticulate setae on leg segments and proximal position of seta on tarsus 2. Differs from Unixenus attemsi in being larger, having 2 setae on femur and 1 seta on tibia, maximum of 3 setae on coxa, broad gap between anterior rows of trichomes on vertex and posterior rows, and in arrangement of posterior rows.
Description
As for Unixenus carnarvonensis sp. n., differing in the following details:
Measurements: Body length 2.3–2.5 mm with no differences between sexes, caudal bundle 0.3 mm.
No freshly collected specimens available. Specimens had been preserved in 70% ethanol. Body yellow brown in colour with tergal trichomes medium brown.
Number of trichomes in posterior rows of vertex of head each side varies 10–12 (anterior rows), 4–6 (posterior rows) (Fig. 2A). Antennal article VI with 3 thick basiconic sensilla, anterior sensillum shorter, coeloconic sensillum posterior to basiconic sensilla, setiform sensillum between basiconic sensilla 1 and 2 (Fig. 2B). Clypeo-labrum similar to Unixenus carnarvonensis sp. n. with 10 setae along posterior margin and fine sandy granular surface, granules decreasing in size to the posterior. Differs from Unixenus carnarvonensis sp. n. in having only 4 overlapping lamellar teeth each side of the median cleft. Lateral palp of gnathochilarium with 13 cylindrical sensilla, medial palp 20–21 sensilla.
Lateral protuberances of collum with 5–7 trichomes each. Tergites 2–9 with presence of median gap variable and narrow if present. Tergite 10 with median gap and reduced number of trichomes (Fig. 2C). Trichomes short barbate. Legs with similar chaetotaxy to Unixenus mjoebergi with coxa 1, 1 seta, coxa 2, 2 setae, coxae 3–13, 2–3 setae; prefemur, tibia and tarsus 2, 1 seta; femur, 2 setae; trochanter, postfemur and tarsus 1 lack setae (Fig. 2D). Setae same as for Unixenus attemsi, biarticulate with base lacking ridges and spines (Fig. 2E), seta on distal edge of femur with longer flagellum; setiform, tarsus 2 seta slightly longer and located more proximal than in Unixenus mjoebergi (Fig. 2F); telotarsus bearing anterior spinous projection longer than the wide claw which bears anterior process, posterior process not visible, small thin lamella process (Fig. 2G). Last sternal plate with 2 setae. Male with 2 pairs coxal glands on leg pairs 8 and 9.
Telson with ornamental trichome insertions numbering 7–10a, 1b, and 3c each side of the midline (Fig. 2I). Trichome b insertion points small, typical of the genus. Hooked caudal trichomes with 2–4 hooks on barbed stems, distal facing barbs along stem proximal to hooks, most distal barb larger. Caudal trichomes with 2 hooks only in both holotype and paratype from Corringle State Forest (Fig. 2H).
Distribution
So far known only from State forest at two widely separated sites in mid NSW and one site in northern NSW (Fig. 5).
Original Description
- Short, M; Huynh, C; 2013: Four new species of Unixenus Jones, 1944 (Diplopoda, Penicillata, Polyxenida) from Australia ZooKeys, 278: 75-90. doi
Images
|
![Figure 5. Map of Australia with states New South Wales and Western Australia expanded to show distribution of five Unixenus species In Western Australia: Unixenus carnarvonensis sp. n.: diamonds, type region shown as open diamond Unixenus karajinensis Short and Huynh 2011[1]: stars, type locality shown as open star. In New South Wales: Unixenus corringlensis sp. n.: squares,squares, type locality shown as open square Unixenus barrabaensis sp. n.: circles, type locality shown as open circle Unixenus myallensis sp. n.: triangles, type locality shown as open triangle. Scale bar =1000 km.](/wiki/File:ZooKeys-278-075-g005.jpg)
Other References
- ↑ Short M, Huynh C (2011) The genus Unixenus Jones, 1944(Diplopoda, Penicillata, Polyxenida) in Australia. Zookeys 156: 105-122. doi: 10.3897/zookeys.156.2168
