Plusioglyphiulus likhitrakarni, Golovatch & Geoffroy & Mauriès & Vandenspiegel, 2011

Golovatch, Sergei I., Geoffroy, Jean-Jacques, Mauriès, Jean-Paul & Vandenspiegel, Didier, 2011, The millipede genus Plusioglyphiulus Silvestri, 1923 in Thailand (Diplopoda, Spirostreptida, Cambalopsidae) 2940, Zootaxa 2940 (1), pp. 1-63 : 16

publication ID

https://doi.org/ 10.11646/zootaxa.2940.1.1

persistent identifier

https://treatment.plazi.org/id/03E4B924-FFC0-FFEB-FDAA-CFA9CAEDF82F

treatment provided by

Felipe

scientific name

Plusioglyphiulus likhitrakarni
status

sp. nov.

Plusioglyphiulus likhitrakarni View in CoL sp. n. Figs 12−15 View FIGURE 12 View FIGURE 13 View FIGURE 14 View FIGURE 15 .

Material examined: Holotype male ( MNHN GA 030 About MNHN ), Thailand, Sa Kaew Prov., Khlong Hat Distr., Cave Tham Phet Po Tong , 13°24’47”N, 102°19’32”E, 220 m a.s.l., guano, 28 October 2010, leg. S. Panha & N. Likhitrakarn. GoogleMaps Paratypes: 7 males, 5 females ( MNHN GA 030 About MNHN ) , 1 male, 1 female ( ZMUM) , 1 male, 1 female ( ZMUC) , 1 male, 1 female ( MZCU) , 1 male, 1 female ( NMNHS) , 1 male ( SEM) , same locality, together with holotype .

Name: Honours Natdanai Likhitrakarn, one of the collectors, our colleague myriapodologist and another active member of the Animal Systematics Research Unit at Chulalongkorn University, Bangkok, Thailand.

Diagnosis: Differs from congeners in the oligotrichous gnathochilarium, coupled with the peculiar carinotaxy patterns, and the special shapes and armature of both gonopod pairs (see also Key below).

Description: Length 22–50 mm, width 1.3–2.0 mm, midbody segments being broadest. Coloration uniformly dark grey-brown to castaneous brown; antennae and collum lighter, usually yellow-brown; metatergal crests and, especially, poriferous tubercles often infuscate.

Body with 53–80p+5–2a+T. Length of holotype about 50 mm, width 2.0 mm, with 80p+1a+T.

All characters as in P. panhai sp. n. ( Figs 12E, F View FIGURE 12 , 13A, C–E View FIGURE 13 , 14A–C View FIGURE 14 , 15A View FIGURE 15 ), except as follows. Ocellaria large, blackish, ovoid in shape, with about 15–22 ocelli arranged in 5–6 longitudinal rows. Gnathochilarium ( Figs 13B View FIGURE 13 , 15B View FIGURE 15 ) rather oligotrichous, with a separate promentum (n=2).

Postcollum constriction very evident, due to especially enlarged collum and segment 2 ( Figs 12A, D View FIGURE 12 ). Carinotaxy formula of collum: //(t)+1p//t+/(t)/t+2p//t+/(t)/t+3p//(t)/t+/(t)/t+4p/(t)/t+pp/t (or pp/(t)/t)+/ma/ma/m ( Figs 12A, D View FIGURE 12 ). Carinotaxy of metaterga 2–4, 7/7+m/m+7/7; usual formula of following metaterga until about caudal third of body, 3/3+I/i+3/3/3+m/m/m, thereafter, 4/4+I/i+3/3/3+m/m ( Figs 12A–C View FIGURE 12 , 13F View FIGURE 13 ); all crests and tubercles, including poriferous cones, rather low. Midbody segments ovoid in cross-section, slightly compressed laterally ( Fig. 13F View FIGURE 13 ).

Male legs 1 with a usual strong central hook curved forward, appendages larger, sac-shaped, densely setose, 1- segmented. Male legs 2 strongly enlarged.

Anterior gonopods rather complex, with a paramedian pair of anterior coxosternal processes (cxp1), high, slen- der, setose only apically and curved anteriad, contiguous and digitiform; pair of posterior coxosternal processes (cxp2) still higher, distally torsate and lobiform; telopodites (te) club-shaped, densely setose distally, slightly shorter than cxp2, attached to coxal region caudolaterally, probably capable of movement ( Figs 14D, E View FIGURE 14 , 15C View FIGURE 15 ). Posterior gonopods shorter, complex, coxites well separated from sternum, fused only basally, each surmounted by an evident fovea flanked by a plumose flagellum, with another, simple flagellum a little basally on caudal face; telopodites virtually missing ( Figs 14F View FIGURE 14 , 15D View FIGURE 15 ).

MNHN

Museum National d'Histoire Naturelle

ZMUM

Zoological Museum, University of Amoy

ZMUC

Zoological Museum, University of Copenhagen

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