Identification key for SE Pacific Latrunculia

1a. Megascleres predominantly paucispined acanthostyles, dull green live colour.................... L. (L.) verenae sp. nov.

1b. Megascleres predominantly smooth....................................................................... 2

2a. Extremely rare oxeas as an additional megasclere category, no additional microsclere category, live colour purple............................................................................................. L. (L.) ciruela sp. nov.

2b. Oxeas may be a relatively common additional megasclere category, microscleres of aberrant form quite common (likely second category)......................................................................................... 3

3a. Subsidiary whorl distant 6–7 µm from median one on acanthodiscorhabds, sanidaster-like acanthodiscorhabds with orthogonal thorns, live-colour dark-green...................................................... L. (L.) copihuensis sp. nov.

3b. Subsidiary whorl distant 0–3 µm from median one on acanthodiscorhabds, sanidaster-like acanthodiscorhabds with thorns more irregularly inserted, live-colour purplish-brown...................................... L. (L.) yepayek sp. nov.