Mongoloniscus Verhoeff 1930
Creators: name: Yang, Lina
name: An, Jianmei
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Agnaridae
Mongoloniscus

description: Key to the known species of genus Mongoloniscus Verhoeff, 1930   
 1 epimera of pereonites 2–7 with white extending margin............................................. M. vannamei   
 - epimera of pereonites 2–7 without white extending margin.................................................... 2   
2 epimera of pereonites 1–7 with noduli laterales.............................................................. 3  
- epimera of pereonites 1–7 without noduli laterales........................................................... 6  
 3 noduli laterales on pereonites 1–7 arranged in a line................................................ M. koreanus   
- noduli laterales on epimera of pereonites 1–7 not arranged in a line............................................. 4  
 4 noduli laterales on pereonites 1, 2–4 not arranged in a line............................................ M. persicus   
- noduli laterales on pereonites 1, 2–4 arranged in a line........................................................ 5  
 5 all pereonites posterior margin with “Wave type ”........................................... M. chevronus sp. nov.   
 - all pereonites posterior margin with “Straight curve”................................................. M. sinensis   
6 cephalon with less-developed lateral lobes................................................................. 7  
- cephalon with developed lateral lobes..................................................................... 9  
 7 cephalon markedly rectangular................................................................. M. ishikawai   
- cephalon markedly not rectangular....................................................................... 8  
 8 cephalon distinctly semicircle............................................................... M. nankaiensis   
 - cephalon distinctly not semicircle........................................................... M. hokurikuensis   
 9 exopod of pleopod 1 without long hind lobe bearing a deep hollow..................................... M. amabilis   
- exopod of pleopod 1 with long hind lobe bearing a deep hollow............................................... 10  
10 middle of pereon and pleon with a longitudinal pattern....................................................... 11  
- middle of pereon and pleon without a longitudinal pattern.................................................... 13  
 11 middle of pereon and pleon with a longitudinal paler pattern....................................... M. satsumaensis   
- middle of pereon and pleon with a longitudinal dark pattern................................................... 12  
 12 cephalon with pointed lateral lobes........................................................ M. odamiyamaensis   
 - cephalon with rounded lateral lobes............................................................. M. oumiensis   
 13 both sides of pereonite tergite without paler longitudinal pattern................................... M. circacaudatus   
 - both sides of pereonite tergite with paler longitudinal pattern.................................................. 14   
 14 telson triangular with concave sides............................................................ M. katakurai   
 - telson triangular with linear sides........................................................................ 15   
 15 eyes large, almost as long as the cephalon....................................................... M. tangoensis   
 - eyes small, far less than the length of the cephalon......................................................... 16   
 16 middle of pleon without paler pattern.............................................................. M. arvus   
 - middle of pleon with paler pattern....................................................................... 17   
 17 pleon tergite 3–5 with rounded posterolateral margin............................................... M. maculatus   
 - pleon tergite 3–5 with pointed posterolateral margin................................................ M. masahitoi
description: Published as part of Yang, Lina & An, Jianmei, 2021, A new species of the genus Mongoloniscus Verhoeff, 1930 (Crustacea: Isopoda: Agnaridae) from China, pp. 265-274 in Zootaxa 5060 (2) on page 266, DOI: 10.11646/zootaxa.5060.2.7, http://zenodo.org/record/5627272