▁ ▁Although ▁c rab s ▁of ▁the ▁genus ▁Nan ha ip ot am on ▁are ▁subject ▁to ▁the ▁pet ▁trade , ▁not ▁much ▁is ▁known ▁about ▁the ▁population ▁status ▁of ▁most ▁species , ▁and ▁many ▁are ▁only ▁known ▁from ▁their ▁respective ▁type ▁local ity . ▁Of ▁the ▁ 1 8 ▁currently ▁accepted ▁species , ▁only ▁three ▁have ▁meaning ful ▁IU CN ▁assess ments , ▁the ▁rest ▁all ▁being ▁data ▁def ic ient . ▁Near ly ▁a ▁third ▁of ▁known ▁species ▁were ▁described ▁in ▁the ▁last ▁ten ▁years , ▁and ▁yet ▁there ▁is ▁evidence ▁that ▁a ▁lot ▁more ▁may ▁be ▁discovered ▁in ▁the ▁near ▁future . ▁The ▁g amb ling ▁hub ▁of ▁Mac au ▁is ▁one ▁of ▁the ▁most ▁dens ely ▁populated ▁places ▁in ▁the ▁world , ▁and ▁a ▁new ▁species ▁has ▁been ▁described ▁there ▁as ▁recently ▁as ▁ 2 0 1 8 . ▁The ▁rapid ▁urban ization ▁of ▁coast al ▁regions , ▁habitat ▁destruction , ▁impact s ▁on ▁water ▁quality ▁and ▁collection ▁for ▁consumption ▁and ▁the ▁pet ▁trade , ▁pose ▁serious ▁thre ats ▁to ▁most ▁known ▁species . ▁ ▁Health ▁ ▁Nan ha ip ot am on ▁fu j ian ense ▁is ▁known ▁to ▁be ▁an ▁intermediate ▁host ▁for ▁the ▁lung ▁flu ke ▁species ▁Par agon im us ▁sk r j ab ini . ▁ ▁Species ▁▁ ▁Nan ha ip ot am on ▁ac ul atum ▁D ai , ▁ 1 9 9 7 ▁ ▁Nan ha ip ot am on ▁d ong y in ense ▁Sh ih , ▁Chen ▁& ▁Wang ,