Boholina

Boxshall, Geoff A. & Jaume, Damià, 2012, Three new species of copepods (Copepoda: Calanoida and Cyclopoida) from anchialine habitats in Indonesia, Zootaxa 3150, pp. 36-58 : 57

Key to species of Boholina

All four species of Boholina are astonishingly similar in their mouthparts and legs 1 to 4. Copepodids of the Boholina species from Muna co-occurred in at least one site and, on the basis of morphology alone, it was not possible to distinguish between the copepodids of the two species. This key therefore functions for adults only:

1. Female genital apertures well separated on genital double somite, located ventrolaterally; male leg 5 with four well-developed spines on right exopod................................................................................. 2

- Female genital apertures located close together on genital double somite, either side of ventral midline; male leg 5 with one vestigial and three well-developed spines on right exopod...................................................... 3

2. Postero-lateral corners of tergites of second and third pedigerous somites pointed in both sexes; endopod of male right leg 5 with large inner spinous process.......................................................... B. munaensis n. sp.

- Postero-lateral corners of tergites of second and third pedigerous somites rounded in both sexes; endopod of male right leg 5 lacking inner spinous process................................................................ B. crassicephala

3. Endopod of right leg 5 of male 2.6 times longer than wide, bearing two slender setae; distal segment of endopod of female leg 5 only 1.1 times longer than wide; two distal spines on exopod of female leg 5 shorter than segment........... B. purgata

- Endopod of right leg 5 of male 3.6 times longer than wide, bearing two sigmoid spines; distal segment of endopod of leg 5 of female 2.6 times longer than wide; terminal spine on exopod of female leg 5 longer than segment, inner distal spine just shorter than segment........................................................................ B. parapurgata n. sp.