Lissodesmus horridomontis, Mesibov, 2005

Mesibov, Robert, 2005, The millipede genus Lissodesmus Chamberlin, 1920 (Diplopoda: Polydesmida: Dalodesmidae) from Tasmania and Victoria, with descriptions of a new genus and 24 new species, Memoirs of Museum Victoria 62 (2), pp. 103-146 : 116

publication ID	https://doi.org/ 10.24199/j.mmv.2005.62.4
publication LSID	lsid:zoobank.org:pub:F70083BA-29DD-4E6E-AEF3-19C31465A5A7
DOI	https://doi.org/10.5281/zenodo.8066857
persistent identifier	https://treatment.plazi.org/id/03BDAA31-F54D-FFA9-87EC-F4034C4F8C0C
treatment provided by	Felipe
scientific name	Lissodesmus horridomontis
status	sp. nov.

Treatment

Lissodesmus horridomontis View in CoL sp. nov.

Figures 40, 41, 69hor, 70hor, 71hor, 73 (map)

Lissodesmus sp. NE5.— Mesibov, 1994: 134.

Material examined. Holotype. Male, Australia, Tasmania. Mt Horror , EQ 588513 (41°05'14''S 147°42'00''E), 200 m, 24.iv.1993, R. Mesibov, QVM 23 View Materials :45829 (ex QVM 23 View Materials :15491); GoogleMaps

Paratypes. Male , Friend Creek, EQ862540 (41°03'37''S 148°01'33''E), 150 m, 25.xi.1992, QVM 23 View Materials :15492 GoogleMaps ; 4 males, Mt Horror , EQ604547 (41°03'23''S 147°43'07''E), 220 m, 18.iii.1993, R. Mesibov, QVM 23 View Materials :15490 GoogleMaps ; 7 females, same details, QVM 23 View Materials :15484 ; 7 males, Speck Creek , EQ566549 (41°03'18''S 147°40'24''E), 290 m, 18.iii.1993, QVM 23 View Materials :15497 GoogleMaps ; 2 males, details as for holotype, AM KS91176 (ex QVM 23 View Materials :15491) ; 2 males, details as for holotype, QVM 23 View Materials :15491 .

Other material. 21 males, 17 females and 5 juveniles from Connors Road , Friend Creek , Martins Hill , Mt Horror , Oxberry Creek , Pearly Brook , Speck Creek and Tomahawk River (see “ Lissodesmus supplement” for details) .

Description. Male c. 13 mm long, H = 1.2 mm. In alcohol, most specimens under low magnification uniformly near-white. Antenna slender, not strongly clavate ( Fig. 69 View Figure 69 hor). Paranota reduced, R = 1.3 ( Fig. 70 View Figure 70 hor), posterior corners slightly turned up. Legs robust, tarsus shorter than femur ( Fig. 71 View Figure 71 hor), sphaerotrichomes lacking on leg 6 femur and prefemur. Epiproct with prominent paired, bluntly rounded projections. Telopodite ( Figs 40 View Figure 40 , 41 View Figure 41 ) reaching leg 5 when retracted. Solenomere arising at one-third to half the telopodite height, directed posterodistally at somewhat less than 45° to telopodite axis, terminating without subapical projection at slightly less than half the prefemoral process height. Tibiotarsus about as large as solenomere but slightly shorter, directed more or less parallel to solenomere, flattened posterobasally and terminating in a variably dentate edge with a small, bluntly pointed subapical projection on anterolateral surface. Femoral process arising at level of solenomere origin, straight, pointed, blade-like, directed distally and terminating at level of solenomere tip. Prefemoral process about as wide at origin as telopodite base, tapering slightly and bending laterally at about midheight with a coarsely toothed “shoulder” on the mesal side of bend, curving posteromesally with the tip flexed laterally at almost 180°, the tip bearing a comb of c. 10–15 long, basally directed teeth. Uncus prominent, arising just proximal to lateral bend in prefemoral process (just distal to solenomere tip), outer edge coarsely dentate.

Distribution and habitat. Known from wet eucalypt forest and cool temperate rainforest over c. 150 km 2 in north-east Tasmania ( Fig. 73 View Figure 73 ), from Williams Hill east to Old Chum Dam, and from 80 to 650 m. L. horridomontis is abundant in the western portion of its small range.

Etymology. Latin horridus (“frightful”) + montis (“mountain”), noun in apposition. Named for the type locality, Mt Horror.