Haploniscus rostratus
Creators: name: Brökeland, Wiebke
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Haploniscidae
Haploniscus
Haploniscus rostratus

description: Key to the ontogenetic stages of Haploniscus rostratus
1 Pereopod 7 present........................................................................................................................................................ 3
- Pereopod 7 absent ....................................................................................................................................................... 2
2 Pleotelson processes not reaching distal tip of large uropods .......................................................................... manca I
- Pleotelson processes extending beyond uropods ............................................................................................. manca II
3 Pereopod 7 fully developed, about as long as pereopod 6 .......................................................................................... 4
- Pereopod 7 shorter than pereopod 6, without setae or unguis ........................................................................ manca III
4 Pleopod 1 present......................................................................................................................................................... 5
- Pleopod 1 absent .......................................................................................................................................................... 7
5 Pleopod 1 extending beyond posterior margin of branchial chamber, pleopods 2 separated....................................... 6
- Pleopod 1 not reaching posterior margin of branchial chamber, both pleopods 2 fused................................. male IV
6 Pleopod 1 lateral processes not separated, pleopod 2 endopod short, extending only slightly beyond exopod............. ........................................................................................................................................................................... male V
- Pleopod 1 distal part ornamented with separated lateral processes, pleopod 2 endopod longer, extending almost to distal margin of protopod .................................................................................................................................. male VI
7 Antenna 1 with four flagellar articles .......................................................................................................................... 8
- Antenna 1 with three flagellar articles........................................................................................................... female IV
8 Without marsupium ......................................................................................................................................... female V
- With marsupium.............................................................................................................................................. female VI
description: Published as part of Brökeland, Wiebke, 2010, Redescription of Haploniscus rostratus (Menzies, 1962) (Crustacea: Peracarida: Isopoda) with observations on the postmarsupial development, size ranges and distribution, pp. 1-25 in Zootaxa 2521 on pages 21-22, DOI: 10.5281/zenodo.196292