List species and varieties by family
Boholinidae Fosshagen & Iliffe, 1989 ( Pseudocyclopoidea )
(1) Boholina Fosshagen, 1989
Rem.: type: Boholina crassicephala Fosshagen in Fosshagen & Iliffe, 1989. Total: 2 spp.

Diagnosis from Bradford-Grieve (1999 b, p.22): After Fosshagen & Iliffe, 1989:
- Head and pediger segment 1 separate, pediger segments 4 and 5 fused.
- Rostrum down-turned and rounded at its tip.
- Urosome 3-segmented in female [in reality 4], and 4-segmented in male [in reality 5, see in remarks].
- Female genital openings widely separated.
- Caudal rami produced into a pointed process distally.
- A1 25-segmented, segments 8 and 9 partly fused.
- A2 exopod distinctly 8-segmented.
- Endopod of P1 3-segmented, each segment with a pointed outer distal corner, last segment without any outer seta and with a strong subapical spine.
- P4 with slightly modified terminal spines on exopod.
- P5 male is a complex grasping organ with highly modified exopods and reduced 1-segmented endopods.

After Boxshall & Jaume (2012, p.53) the genus were established by Fosshagen & Ilille (1989) on the basis of two new species discovered in a brackish pool in San Vincente Cave on Bohol Island (Philippines). In the original description, the urosome of the females and males were described as 3- and 4-segmented respectively. It is shown that the anal somite has been overlooked in both sexes and this has been verified by examination of the types of B. crassicephala. It is represented by a short hoop of cuticle, which lies more-or-less completely telescoped within the preceding free abdominal somite. The presence of the extensive hyaline membrane around the entire posterior margin of that somite adds to the concealment. A similarly tiny and concealed anal somite was noted for genera such as Edaxiella, Oinella and Gloinella within the closely related Epacteriscidae.
For the authors it is interesting to note that Boholina tends to occur in cave poole.

Key to species after Boxshall & Halsey (2004, p.76) :
1 - A1 reaching slightly beyond 3rd pedigerous somite in female; frontal margin of dorsal cephalic shield with transverse crest; right exopod of male P5 with 4 strong, serrate spines ......Boholina crassicephala
1' - A1 reaching to muddle of genital double-somite in female; dorsal cephalic shield without frontal crest; right exopod of male P5 with 3 strong spines and 1 small spine ...... Boholina purgata.

[1] Boholina crassicephala  Fosshagen, 1989   (F,M)    [Figs]

[2] Boholina munaensis  Boxshall & Jaume, 2012   (F,M)    [Figs]

[3] Boholina parapurgata  Boxshall & Jaume, 2012   (F,M)    [Figs]

[4] Boholina purgata  Fosshagen, 1989   (F,M)    [Figs]

 Any use of this site for a publication will be mentioned with the following reference :

Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at [Accessed April 22, 2024]

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Marine Planktonic Copepods

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