Armandia Filippi, 1861

Key to species of Armandia Filippi, 1861 View in CoL of Indian Ocean and West Pacific Ocean

(modified after Moreira & Parapar 2017)

This key contains all Armandia species described or reported in the Indian Ocean and West Pacific Ocean thus enhancing the geographic range of the key by Moreira & Parapar (2017). Armandia longicaudata was excluded because is now considered as belonging to Ophelina (see Neave & Glasby 2013; Parapar et al. 2023). Type locality of each species in brackets.

1. AT without marginal papillae........................................................................... 2

- AT with marginal papillae.............................................................................. 5

2. (1) Unpaired anal cirrus present......................................................................... 3

- Unpaired anal cirrus absent............................................................................. 4

3. (2) AT opening dorsally; UAC with orbicular shape at base.................................................................................................... A. ramanamurthyi Gopal, Sivadas & Ramu, 2025 (Bay of Bengal)

- AT opening dorsally and ventrally; UAC not orbicular shape at base.... A. bilobata Hartmann-Schröder, 1986 View in CoL (S Australia)

4 (2) AT distal end obliquely truncated, dorsal side shorter........................ A. simodaensis Takahasi, 1938 View in CoL ( Japan)

- AT distal end obliquely truncated, ventral side shorter........................... A. exigua Kükenthal, 1887 View in CoL (S China)

5. (1) AT maximum length shorter than width at base........................................................... 6