title: A new fairy shrimp Phallocryptus tserensodnomi (Branchiopoda: Anostraca) from Mongolia.
abstract: A new species of Phallocryptus Biraben 1951 (Branchiopoda, Anostraca) from Mongolia is described. Phallocryptus tserensodnomi sp. nov. is close to P. spinosa (Milne-Edwards 1840), but both morphological and molecular analyses (Cytochrome Oxidase I, COI) indicate that they represent separate species. Most relevant differential features of the new species include: (1) frontal appendage provided with small ventral conical outgrowths; (2) second antennamere evenly curved, sickle-shaped; (3) distal fleshy process on labrum evenly curved forwards and tapering; (4) short stout acute spine-like projections present at each side of basal portion of gonopods; (5) female second antennae shorter and wider than in P. spinosa, tapering. Based on morphological comparisons the new species appears to be a Mongolian endemic, although some genotypes of presumed P spinosa from Africa are similar to the new species, suggesting P. tserensodnomi might have a wider distribution.
authors.affiliation: Departament d'Ecologia, Facultat de Biologia, Avda. Diagonal 643, 08028 Barcelona, Spain. malonso@ub.edu
authors.forename: Miguel
authors.initials: M
authors.lastname: Alonso
authors.forename: Marc
authors.initials: M
authors.lastname: Ventura
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D033202:Anostraca / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D049628:Body Size; D005260:Female; D008297:Male; D008986:Mongolia; D009929:Organ Size; D010802:Phylogeny