Three new species of Coecobrya (Collembola: Entomobryidae) from caves in the Thai Peninsula Nilsai, Areeruk Jantarit, Sopark Satasook, Chutamas Zhang, Feng Zootaxa 2017 4286 2 187 202 Zhang & Nilsai Zhang & Nilsai [151,653,1789,1816] Entognatha Entomobryidae Coecobrya Animalia Collembola 10 197 Arthropoda species polychaeta sp. nov.     Materialexamined. Fivefemales on slides and 30 inalcohol, Thailand: Satun Province: Khuan Don District: Ton Dincave, 6.72636°N, 100.16249°E, altitude  115 m,  8.ix.2016, S. Jantaritand A. Nilsaileg. (collection #THA_SJ_STN15). Fourin alcohol deposited in NJAUand others in PSU-NHM.  GenBank number. KY704927– KY704932.   Ecology.These animals were found in a large population along a stream bank, on stalagmites, clay, gravels and rock surfaces in a humid environment where bat guano was absent.   Remarks.  Coecobryacf. polychaeta  sp. nov.is almost identical to  C. polychaeta  sp. nov.in morphology, including having specialised, unique characters, such as extremely long antennae, elongate lateral process of labial palp, and four sublobal hairs on maxillary outer lobe. It differs from the latter only in having mac a1 on Abd. I ( Fig. 41) and smooth postlabial mic X4.Mac a3 on Abd. II ( Fig. 42) is present in one specimen. The great mean genetic distance 0.231 (0.219–0.239) between two populations has exceeded the mean interspecific distances reported in Porco et al. (2014), Katz et al. (2015)and Schneider et al. (2016). Two populations are only approximately 10 kmdistant from each other. Following the conservative line, the population from Khuan Don District is not here considered to be a separate species because widely accepted species delimitation criteria not established across divergent collembolan groups. It is better to be conservative in assigning specimens to new species than to incorrectly recognize artificial entities ( Carstens et al. 2013). 1572325011 2016-09-08 NJAU S. Jantarit & A. Nilsai & Four Thailand Material 115 6.72636 Khuan Don District 1 100.16249 Five 10 197 1 Satun Province