Kronopolites contrastus, Nguyen & Vu & Phung & Tran & Le, 2025
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publication ID |
https://doi.org/10.3897/zookeys.1249.155280 |
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publication LSID |
lsid:zoobank.org:pub:C6C35735-2A38-4396-B183-A8FD512D1B88 |
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DOI |
https://doi.org/10.5281/zenodo.16942545 |
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persistent identifier |
https://treatment.plazi.org/id/8889CB4C-39B0-5668-9152-F2909B07B2B6 |
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treatment provided by |
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scientific name |
Kronopolites contrastus |
| status |
sp. nov. |
Kronopolites contrastus sp. nov.
Figs 5 View Figure 5 , 6 View Figure 6 , 7 View Figure 7 , 8 View Figure 8
Material examined.
Holotype: Vietnam • 1 male; Tuyen Quang Province, Cham Chu Nature Reserve ; 22.20248°N, 105.11154°E; limestone forest; July 2018; Dai D. Nguyen leg.; IEBR-Myr 718 . GoogleMaps
Diagnosis.
The species differs from its congeners in colouration pattern (tergites mostly dark while other parts of body whitish yellow), gonopod conformation (lamina l present laterally, subrectangular; processes a and b both leaf-shaped, but pointed; a shorter than b in length; process a subhelicoid. Solenophore clearly curved, long, expanded distomesally, bipartite. Solenomere longer than solenophore, ribbon-shaped, coiled).
Description.
Size: Length 48.38 mm, width of midbody pro- and metazona 3.41 and 4.87 mm, respectively.
Colouration: tergites mostly dark; head blackish brown; prozonae, pleurites, sternites, antennae, telson, and legs whitish yellow (Figs 5 View Figure 5 , 6 View Figure 6 ).
Head: Clypeolabral region and vertex densely setose, epicranial suture distinct. Antennae moderately long (Fig. 5 A, B View Figure 5 ), extending behind body segment 3 when stretched laterally; antennomere 2 = 3 = 4> 6> 5> 7 = 1, antennomere 7 with four conical sensories.
Collum: traces of setae hardly seen; lateral incisions absent; caudal corner of paraterga very broadly rounded, declined ventrad, produced behind rear tergal margin (Fig. 5 A, B View Figure 5 ).
Body rings: In width, segment 4 <3 <head <5 <collum <body ring 2 <6–17, thereafter body gently and gradually tapering. Tegument smooth and shining, prozonae finely shagreened, metaterga finely rugulose (Figs 5 A – D View Figure 5 , 6 A, B View Figure 6 ); surface below paraterga finely microgranulate (Fig. 5 C, F View Figure 5 ). Tergal setae all broken, traces hardly visible. Axial line distinct on anterior halves of metazonae (Figs 5 D View Figure 5 , 6 A View Figure 6 ). Transverse sulcus usually distinct (Fig. 5 D View Figure 5 ), slightly incomplete on body rings 4 and 19, complete on metaterga 5–18, narrow, line-shaped, shallow, reaching bases of paraterga. Stricture between pro – and metazonae evident, broad and deep, ribbed at bottom down to base of paraterga (Figs 5 D View Figure 5 , 6 A View Figure 6 ). Pleurosternal carinae complete crests with a sharp caudal tooth on body rings 2–7 (Fig. 5 C, F View Figure 5 ), thereafter increasingly strongly reduced until body ring 17.
Paraterga strongly developed, lying rather high (at upper 1 / 3 of body), slightly upturned, but lying below dorsum; anterior edge broadly rounded and narrowly bordered, fused to callus; caudal corner very narrowly rounded, starting from segment 15 extending increasingly well beyond rear tergal margin (Figs 5 C, D, F View Figure 5 , 6 A, B View Figure 6 ); lateral edge without incisions; posterior edge nearly straight. Calluses on paraterga narrow, delimited by a sulcus both dorsally and ventrally. Ozopores evident, lateral, lying in an ovoid groove at ~ 1 / 4 in front of posterior edge of metaterga (Figs 5 C, D View Figure 5 , 6 A View Figure 6 ).
Telson: Epiproct (Figs 5 F View Figure 5 , 6 A – C View Figure 6 ) conical, flattened dorsoventrally, with two small apical papillae; tip subtruncate; pre – apical papillae small, lying close to tip. Hypoproct sub – semicircular, setiferous knobs at caudal edge small and well – separated (Fig. 6 C View Figure 6 ).
Sterna: densely setose, without modifications except sternum 5 th with a bifid tongued – shaped, setose cone between male coxae 4 (Fig. 6 D View Figure 6 ).
Legs (Fig. 6 C, F View Figure 6 ): rather long and slender, midbody ones ~ 1.2–1.3 times as long as body height; prefemora without modifications, tarsal brushes present on pregonopodal legs.
Gonopods (Figs 7 View Figure 7 , 8 View Figure 8 ) typical Kronopolites species; coxite (co) long, subcylindrical, a little curved caudad, sparsely setose distoventrally. Prefemur (pref) densely setose, ~ 1 / 3 as long as femorite + postfemoral part. Femorite (fe) long, cylindrical, slightly constricted medially, simple without any modifications; mesal side strongly grooved; lateral side with a distinct transverse sulcus demarcating the postfemoral region. Postfemoral part well developed; lamina l present laterally, subrectangular; processes a and b both leaf-shaped, but pointed; a shorter than b in length; process a subhelicoid. Solenophore clearly curved, long, expanded distomesally, bipartite. Solenomere longer than solenophore, ribbon-shaped, coiled.
Etymology.
Contrastus, an adjective epithet is used to emphasise the contrast colouration of body.
Remarks.
The new species is similar to K. fuscocingulatus from northern Thailand by having a sternal lobe between male coxae 4, and processes a and b of gonopod being nearly independent, subequal in length. However, two species are distinguished by shape of sternal lobe (bifid tongue-shaped vs roundly subquadrate), and shape of process a and b (spiniform, blunt, short, and stout vs ribbon-shaped, blunt, slender and long).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Sulciferini |
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