查看更多>>摘要：The genus Ischnothyreus is reported for the first time from Borneo with 17 new species (I. balu, I. barus, I. danum, I. deelemanae, I. elvis, I. falcifer, I. flabellifer, I. flippi, I. florifer, I. fobor, I. hooki, I. jojo, I. kalimantan, I. matang, I. mulumi, I. rex, I. serapi). All species are diagnosed, described and illustrated.
Jersabek, Christian D.Weithoff, Guntram [AuthorE-mail: weithoff@rz.uni-potsdam.de]Weisse, Thomas [Author...
9页
查看更多>>摘要：We describe a new species of Cephalodella, C. acidophila n. sp., from the plankton of two extremely acidic mining lakes (pH <3) in Austria and Germany. The species is morphologically closely related to Cephalodella delicata Wulfert. It shares with the latter an almost identical trophi morphology and anatomical organization, but differs clearly by form and length of its toes, larger body size, and ecology. Laboratory experiments revealed that the species is acidophilic, i.e. it thrives at low pH (<4) and does not survive at circumneutral conditions. The species occurs in man-made habitats at low to moderate abundance (usually 5-22 individuals l(-1)) and in stock cultures thrives on the green alga Chlamydomonas acidophila. The easily cultured species has previously been used in various experimental studies, but has only now been recognized as an undescribed species.
查看更多>>摘要：Fallicambarus (F.) wallsi is described from San Augustine and Sabine counties, Texas. It may be distinguished from its nearest relative, F. (F.) kountzeae, by its distomesially oriented proximal margin of the cheliped's palm mesial to the condyle; proportionately longer mesial margin of the palm; lack of a distinct excision on the dactyl's opposable margin; more strongly tapering mesial process and absent or reduced cephalic process of the first pleopod of the first form male; and proportionately broader mesial ramus of the uropod, antennal scale and areola.An identification key is provided for the subgenus Fallicambarus.
NSTL