Brachydesmus (Haplobrachidesmus) kvavadzei, Golovatch & Evsyukov & Reip, 2016

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

publication ID	https://doi.org/10.11646/zootaxa.4085.1.1
publication LSID	lsid:zoobank.org:pub:7F819439-FD77-4EF2-8E26-7B46F9B5FAAB
DOI	https://doi.org/10.5281/zenodo.6079506
persistent identifier	https://treatment.plazi.org/id/03D23F44-F63E-9D17-FF07-5706FDA1C02A
treatment provided by	Plazi (2017-11-16 22:53:54, last updated 2024-11-27 00:40:34)
scientific name	Brachydesmus (Haplobrachidesmus) kvavadzei
status	sp. nov.

Treatment

Brachydesmus (Haplobrachidesmus) kvavadzei View in CoL sp. n.

Fig. 28 View FIGURE 28 , Map 3

Material examined. Holotype male ( MIZW), GEORGIA, Ajaria, Zelenyi Mys near Batumi, Botanical Garden, 30.X. – 6.XI.1963, leg. B. Pisarski . Paratypes: 3 males, 2 fragments (MIZW), 1 male ( ZMUM p3035), same data, together with holotype. Non-type : 1 female ( ZMUM p3036), Ajaria, Khulo Distr. , 3 km W of Danisparauli, deciduous forest, litter, 10.X.1981, leg. S. Golovatch.

Diagnosis. Differs from B. kalischewskyi , the only consubgener remaining accepted, in the particularly small body, the nearly fully obliterate metatergal sculpture, the absence of sphaerotrichomes, and the presence of only a single apical tooth on the gonopod exomere; from B. simplex sp. n. primarily by the particularly slender male legs, the narrower paraterga and the considerably shorter exomere of the gonopod.

Name. To commemorate the late Dr. Eristo Sh. Kvavadze, a prominent specialist in the earthworms of the Caucasus and a close friend of the first author.

Description. Length 5 – 6 mm, width of midbody metazonae 0.65 – 0.7 mm (male), metazonite to prozonite width ratio ca 1.3 ( Fig. 26A View FIGURE 26 ). Coloration uniformly pallid to light brown.

All characters as in B. assimilis ( Fig. 28 View FIGURE 28 ), except as follows. In width, collum <2 = 3 <4 <head = 5. Paraterga poorly developed, their fore margins and anterolateral corner largely broadly and regularly rounded, not angular; caudolateral corner mostly acute-angled, pointed or nearly pointed and drawn behind rear tergal margin only in segments 17 and 18 ( Fig. 28A View FIGURE 28 ). Tergal setae mostly very short and subbacilliform. Metatergal sculpture nearly fully obliterated. Male prefemora not bulging laterad, slender; sphaerotrichomes wanting ( Fig. 28B View FIGURE 28 ). Gonopod ( Fig. 28C – 28D View FIGURE 28 ) bipartite, stout, endomere (en) typically bifid and partly pilose, but exomere (ex) long, with only a single, apical, rounded tooth (e).

Figures

FIGURE 26. Brachydesmus kalischewskyi Lignau, 1915, morph A male from Pasture Abago, Adygea, Russia. A: habitus, lateral view. B – D: anterior, middle and caudal parts of body, respectively, dorsal views. Pictures by K. Makarov, taken not to scale.

FIGURE 28. Brachydesmus kvavadzei sp. n. A: male paratype, habitus, dorsal view. B: leg 7, lateral view. C – D: right gonopod, mesal and lateral views, respectively. Designations: en, endomere; ex, exomere; e, apical tooth of exomere. Picture A by K. Makarov, taken not to scale. Scale bars: 0.25 mm (B), 0.1 mm (C – D).