Tasmaniosoma warra, Mesibov, 2010

Mesibov, Robert, 2010, The millipede genus Tasmaniosoma Verhoeff, 1936 (Diplopoda, Polydesmida, Dalodesmidae) from Tasmania, Australia, with descriptions of 18 new species, ZooKeys 41 (4), pp. 31-80: 73-74

publication ID

http://doi.org/ 10.3897/zookeys.41.420

publication LSID

lsid:zoobank.org:pub:FC5CFE57-05F9-4685-BC02-BB82AB9E4894

DOI

http://doi.org/10.5281/zenodo.3788476

persistent identifier

http://treatment.plazi.org/id/6B10878B-F839-A56C-FF34-FF20FC82FA31

treatment provided by

Plazi

scientific name

Tasmaniosoma warra
status

sp. n.

Tasmaniosoma warra   sp. n.

urn:lsid:zoobank.org:act:C2EDE9C4-E146-4F5B-A848-74068E27C92B

Figs 3A View Figure 3 , 22 View Figure 22 ; map Fig. 24 View Figure 24

Holotype. Male, Australia, Tasmania, Huon River (Manuka Road), 43°05'36"S 146°43'03"E ( DN 769286 View Materials ) ± 100 m, 100 m, 29 April 1997, R. Mesibov, plot 1 R4, QVM 23 View Materials :46037. GoogleMaps  

Paratypes. 1 male, details as for holotype, QVM 23 View Materials :46038   ; 1 female, details as for holotype but 43°05'42"S 146°42'41"E ( DN 764284 View Materials ) ± 100m, 110 m, plot 1 R1, 28 April 1997, QVM 23 View Materials :46587 GoogleMaps   ; 1 female, same details but 43°05'49"S 146°42'28"E ( DN 761282 View Materials ) ± 100m, 80 m, 14 May 1997, plot 1M6, QVM 23 View Materials :46588 GoogleMaps   ; 1 male, same details but 43°05'36"S 146°42'45"E ( DN 765286 View Materials ) ± 100m, 130 m, 15 May 1997, plot 1 R5, QVM 23 View Materials :46039 GoogleMaps   ; 1 female, same details but 43°05'33"S 146°42'41"E ( DN 764287 View Materials ) ± 100m, 140 m, plot 1 R6, QVM 23 View Materials :46589 GoogleMaps   ; 1 female, Huon River (Arve Road), Tas, 43°5'56"S 146°44'45"E ( DN 792280 View Materials ) ± 100m, 170 m, plot 3M4, 20 May 1997, R. Mesibov, QVM 23 View Materials :46590 GoogleMaps   .

Other material examined. 12 males and 10 females from 16 other sites (see Appendix).

Diagnosis. Metatergites without tubercles; ring 6 sternite with discrete setal brushes on anterior margin; gonopod telopodite with stout, rod-like setae in longitudinal tract on posteromedial surface and two large, upright (distally directed) processes arising anterolaterally near apex, the taller, more lateral one Y-shaped, the more anterior one with broad, minutely dentate apical margin.

Description. Male/female approximate measurements: length 16/ 16 mm, ring 12 paranota width 1.8/ 2.2 mm. Male as for T. armatum   in live colour, colour in alcohol and most non-gonopod details, but overall widths tergite 6>5>4>(3,2,head)>collum, ring 12 paranota 1.3 × as wide as prozonite, 6–7 small setae in transverse rows on midbody metatergites ( Fig. 3A View Figure 3 ), ozopore opening very close to paranotal margin. Ring 6 sternite as for T. armatum   , but with paired paramedian brushes of fine setae on anterior margin separated by shallow notch.

Gonopod telopodite ( Fig. 22 View Figure 22 ) straight, slightly constricted just above base, with narrow buttress near base on anterolateral surface. Divided between 2/3 and 3/4 telopodite height into five processes (noted here lateral to medial): (a) large, anteroposteriorly flattened process, widely expanded distally, distal margin lower medially and minutely dentate, lateral end of margin broadly acuminate; (b) large, Y-shaped process, flattened anteroposteriorly, divided at ca 2/3 process height, tips roundly acuminate; (c) mediolaterally flattened laminate process, hook-shaped posteriorly; (d) solenomere with slender, distally directed, posteriorly curving distal branch and short, broad, posteriorly directed basal branch; (e) small, slender medial process arising basal to solenomere origin, directed posterodistally, with expanded, truncate tip. Posterodistally directed tract of 20–30 stout, rod-like setae on posteromedial surface from ca 1/3 to 2/3 telopodite height; small group of fine setae on posterolateral surface just above base; longitudinal row of 5–6 fine setae laterally at mid-height on telopodite. Prostatic groove running distally and slightly posteriorly on posteromedial surface to base of solenomere.

Female more robust than male; posterior margin of epigynum slightly elevated at both ends and produced medially as small, rounded triangle.

Distribution. Common in wet eucalypt forest (with and without a cool temperate rainforest understorey) over ca 2500 km 2 on the southeast Tasmanian mainland and on South Bruny Island, from near sea level to at least 370 m ( Fig. 24 View Figure 24 ). On the Tasmanian mainland, not yet found more than a few kilometres north of Grove, south of Dover or west of Mt Weld. Co-occurs with T. bruniense   sp. n. on Bruny Island; possibly parapatric with T. australe   sp. n., as the two species occur within ca 7 km of each other and have not yet been found together.

Etymology. Noun in apposition, for the type locality in the Warra Long Term Ecological Research (LTER) site in the Southern Forests.

R

Departamento de Geologia, Universidad de Chile