Plusioglyphiulus sutchariti, 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 : 12-16

publication ID

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

persistent identifier

https://treatment.plazi.org/id/03E4B924-FFC4-FFEB-FDDE-CBCDCA30FD1A

treatment provided by

Felipe

scientific name

Plusioglyphiulus sutchariti
status

sp. nov.

Plusioglyphiulus sutchariti View in CoL sp. n. Figs 8−11 View FIGURE 8 View FIGURE 9 View FIGURE 10 View FIGURE 11 .

Material examined: Holotype male ( MNHN GA 064 About MNHN ), Thailand, Phrae Prov., Rong Kuang Distr., Cave Tham Pha Nang Khoi , 230 m a.s.l., 29 November 2009, leg. C. Sutcharit and members of the Animal Systematics Research Unit . Paratypes: 1 male, 1 juvenile ( MNHN GA 064 About MNHN ) , 1 female ( SEM), same locality, together with holotype .

Name: Honours Dr. Chirasak Sutcharit, one of the collectors and an important member of the Animal Systematics Research Unit at Chulalongkorn University, Bangkok, Thailand.

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

Description: Length of holotype about 40 mm, width 1.7 mm, with 69p+2a+T. Male paratype about 28 mm long, 1.2 mm wide, with 57+5a+T. Juvenile about 16 mm long and 1.0 mm wide, with 50+5a+T. Coloration of adults uniformly light to dark grey-brown; antennae yellowish to light brown; legs yellowish to red-brown; juvenile uniformly light grey-brown.

All characters as in P. panhai sp. n. ( Figs 8E–F View FIGURE 8 , 9C–E, G View FIGURE 9 , 10 View FIGURE 10 , 11F View FIGURE 11 ), except as follows. Antennae slightly shorter and more clavate ( Figs 8A View FIGURE 8 , 11A View FIGURE 11 ). Ocellaria large, blackish, ovoid in shape, in adults with about 18 ocelli arranged in five longitudinal rows (in juvenile in three rows of 3+2+1 ocelli, counting from bottom). Gnathochilarium ( Figs 9A View FIGURE 9 , 11B View FIGURE 11 ) rather oligotrichous, with a separate promentum (n=2).

Postcollum constriction very evident, due to especially enlarged collum and segment 2 ( Figs 8D View FIGURE 8 , 9B View FIGURE 9 ). Carinotaxy formula of collum either //(t)+1p/(t)/(t)+//(t)+2p/(t)/(t)/(t)+3p/(t)/(t)+t/(t)/(t)+4p/(t)/(t)+P+//ma or //t+1p//t+2p/ (t)/(t)+3p/(t)/(t)+/t/t+pp/t/t+ma ( Figs 8A, D View FIGURE 8 ). Carinotaxy of metaterga 2–4, 7/7+m+7/7; usual formula of following metaterga, 3/3+I/i+3/3/3+m/m/m (including juvenile), rarely on some segments 4/4+I/i+3/3/3+m/m/m ( Figs 8A–C View FIGURE 8 , 9F View FIGURE 9 ); all crests and tubercles, including poriferous cones, rather low. Midbody segments ovoid in cross-section, slightly compressed laterally ( Fig. 9F View FIGURE 9 ).

Male legs 1 with a usual strong central hook, appendages 2-segmented ( Figs 9B View FIGURE 9 , 11C View FIGURE 11 ). Male legs 2 as usual, very strongly enlarged, telopodite hirsute on frontal face; penes subconical, truncate apically, fused at base, bare ( Figs 9B View FIGURE 9 , 11D View FIGURE 11 ).

Anterior gonopods rather complex, with a paramedian pair of anterior coxosternal processes (cxp1), high, slen- der, poorly setose, contiguous and digitiform; pair of posterior coxosternal processes (cxp2) even higher, distally retrorse and apically subunciform; telopodites (te) club-shaped, densely setose, nearly as high as cxp2, attached to coxal region on caudal face, probably capable of movement ( Fig. 11G View FIGURE 11 ). Posterior gonopods smaller, rather simple, coxites well separated from sternum, each finely fringed apically and surmounted by an evident fovea flanked by a velum; telopodites missing ( Fig. 11H View FIGURE 11 ).

MNHN

Museum National d'Histoire Naturelle

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