Brachydesmus (Haplobrachidesmus) simplex,

Golovatch, Sergei, Evsyukov, Aleksandr & Reip, Hans, 2016, The millipede family Polydesmidae in the Caucasus (Diplopoda: Polydesmida), Zootaxa 4085 (1), pp. 1-51: 45

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Brachydesmus (Haplobrachidesmus) simplex

sp. n.

Brachydesmus (Haplobrachidesmus) simplex  sp. n.

Fig. 29View FIGURE 29, Map 3

Material examined. Holotype male (ZMUM p3037), ABKHAZIA, Gagra Distr., Lake Ritsa, 950 – 1100 m a.s.l., Fagus  , Abies  , Picea  , Acer  etc. forest, litter, under bark and stones, 13 – 14.VIII.1986, leg. S. Golovatch. Paratypes: 5 males (ZMUM p3038), same data, together with holotype; 1 male, 6 females (ZMUM p3039), Myussera Nature Reserve, 20 – 130 m a.s.l., Castanea  , Alnus  etc. forest, 8 – 10.IV.1983, leg. S. Golovatch; 3 males (MIZW), 1 male (ZMUM p3040), RUSSIA, Krasnodar Prov., Sochi, open Carpinus  and Quercus  forest, loam, 7.XII.1963; 1 male (MIZW), same locality, dendrarium and city park, under stones, 9.XII.1963, all leg. P. Pisarski.

Diagnosis. See Diagnosis of B. kvavadzei  sp. n., as well as Key below.

Name. To emphasize the particularly simple gonopod exomere.

Description. Length 6 – 7.5 mm, width of midbody metazonae 0.8 – 1.0 mm (male, female), metazonite to prozonite width ratio ca 1.5 – 1.6 ( Fig. 29AView FIGURE 29). Coloration uniformly pallid to light yellow.

All characters as in B. assimilis  ( Fig. 29AView FIGURE 29), except as follows. In width, collum <2 <3 <head = 4 <5. Paraterga well-developed, their fore margins nearly straight, while anterolateral corners clearly angular; caudolateral corner mostly acute-angled and dentiform starting with segment 5, subspiniform and drawn behind rear tergal margin starting with segment 15 ( Fig. 29AView FIGURE 29). Tergal setae mostly very short and subclavate. Metatergal sculpture indistinct, but at least middle and caudal rows of flat small tubercles visible. Male legs clearly incrassate compared to female, but male prefemora not bulging laterad; sphaerotrichomes absent ( Fig. 29BView FIGURE 29). Gonopod ( Fig. 29C – 29GView FIGURE 29) bipartite, stout, exomere with only a single, small, apical tooth (e).