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Maps showing the cave systems in the Ke Bang massif and Son Doong cave (After Limbert 2012). The photo of the senior author was made at the type locality of Mesocyclops sondoongensis sp. nov. 

Maps showing the cave systems in the Ke Bang massif and Son Doong cave (After Limbert 2012). The photo of the senior author was made at the type locality of Mesocyclops sondoongensis sp. nov. 

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Article
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A new stygobitic cyclopoid species, Mesocyclops sondoongensis sp. nov. is described from caves in central Vietnam. This is the first cave-dwelling representative of Mesocyclops in SE Asia. Conspicuous features of the new species, such as the narrow lateral arms of the seminal receptacle and the presence of medial spine on leg 1 basipodite, are only...

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Context 1
... two pools on the place named as "Terracotta Army" inside the Va cave (geographic coordinates of the cave entrance: 17°29'22.3"N, 106°17'04.8"E) in Phong Nha-Ke Bang National Park, Quang Binh province, Central Vietnam (Figs 2, 3). The lake and the pools are in permanently dark section. ...
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... ( Fig. 23) with 11 blunt teeth on distal rim and rounded lateral protuberances with 3 tiny teeth. Ventral surface of labrum with long distal hairs ar- ranged in group rather than arc, overhanging toothed distal rim. Epistoma (medial protrusion between ros- trum and labrum), and vertical cleft (between epistoma and rostrum) ...
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... ( Fig. 20) with four large medial claws on medial margin, mediodistal lobe pilose, longitudinal rows of long hairs present on outer (ventral) surface, and shorter and more robust hairs (or spinules) pres- ent in distal half on inner (mediodorsal) ...
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... ( Figs 21, 22, 44) bearing two long and one short setae. Gnathobase with 11 strong teeth along distal margin, and one plumose seta at dorsal corner; three groups of spinules near palp, spinules forming transverse proximal row (group "a") larger than those in other two rows (group "b" and "c"). Group of spinules also present proximally to palp (Fig. 22, ...
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... (Figs 24, 25). Praecoxal arthrite apically with three distal claws and one ventral (posterior) spiniform seta at their base. ...
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... (Fig. 26) with syncoxopodite, basipodite and two-segmented endopodite. Syncoxopodite bearing three setae, and adorned with transverse row of spin- ules on frontal surface. Basipodite with one longer medial seta in distal third and one shorter seta on frontal surface. Spinules arranged in two groups near lateral margin on caudal surface of ...
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... ornamentation of P4 coxopodite (Figs 31, 52) composed of: intermittent row of spinules (9) along distal margin; relatively short spinules (9, 10) arranged in oblique row at laterodistal angle; single row (14) along proxi- mal margin; row of tiny spinules at proximolateral angle and transverse row at halfway of segment near lateral margin. P4 enp3 (Fig. 32) 2.5 times as long as wide, inner (medial) apical spine slightly shorter than outer (lateral) apical one; outer apical spine 0.9 times as long as P4 enp3; outer edge of inner apical spine with many ...

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Citations

... Type locality: Son Doong cave, Phong Nha-Ke Bang National Park, Quang Binh, Vietnam (Tran & Hołyńska, 2015). ...
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