Bryocyclops Boonyanusith & Sanoamuang & Brancelj 2018
Creators: name: Boonyanusith, Chaichat
name: Sanoamuang, La-orsri
name: Brancelj, Anton
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Maxillopoda
Cyclopoida
Cyclopidae
Bryocyclops

description: Key to genera and subgenera of the Bryocyclops group
Common characteristics of the group are the following: a) 10- or 11-segmented antennules; b) rami of swimming legs 2-segmented but with additional oligomerization in some species; c) P5 completely fused with Pd5, with baseoendopodal seta laterally (a remnant of the proximal segment of P5 – coxa, basis and Endp), with 2 setae/spines sub-ventrally (a remnant of the Exp P5).
1. Position of P6 vestiges on the posterior half of genital double-somite ……………………………… ……………………………………………………………………… Haplocyclops Kiefer, 1952 (2)
– Position of P6 vestiges on the anterior half of genital double-somite ………………………………3
2. P1–P4 Exp-2 spine formula 2.3.3.2 …………………… Haplocyclops (Haplocyclops) Kiefer, 1952
– P1–P4 Exp-2 spine formula 2.2.2.2 ………………………………………………………………… …………………………………… Haplocyclops (Kierfercyclops) Karanovic & Ranga Reddy, 2005
3. P5 reduced to one stout spine on Exp lobe; coxa of P4 with one strong, spiniform seta ……………………………………………………………………… Bacillocyclops Lindberg, 1956
– P5 with two setae/spines on Exp lobe ……………………………………………………………4
4. P5 remnant of Exp lobe with one spine and one seta; genital double-somite longer than wide; distal segment of P4 Endp with six elements; one spine and one seta apically … Yansacyclops Reid, 1988
– P5 remnant of Exp lobe with two setae; genital double-somite as long as wide or wider than long …5
5. P1 without median seta/spine on both coxa and basis; anterolateral seta (II) on caudal ramus positioned dorsally; P1–P4 Endp-2 spine formula 2.2.2.2 ……………… Rybocyclops Dussart, 1982
– P1 with one seta/spine on coxa, basis with or without inner seta; anterolateral seta (II) on caudal ramus positioned dorsally or laterally; P1–P4 Endp-2 spine formula not 2.2.2.2 ……………6
6. Male P3 Endp-2 with modified apical spine ………………………………………………………7 ‒ Male P3 Endp-2 without modified apical spine ……………………… Allocyclops Kiefer, 1932 (8)
7. Intercoxal sclerite of P4 with obtuse, slightly rounded prominence; P4 Exp-2 with five setae, P4 Endp distinctly 2-segmented; mandibular palp armed with three setae …………… ……………………………………………………………………………… Siamcyclops gen. nov.
– Intercoxal sclerite of P4 with pointed or rounded prominence; P4 Exp-2 with four (only in B. jankowskajae with five) setae, P4 Endp with variable segmentation: 1-segmented, indistinctly 2-segmented or distinctly 2-segmented; mandibular palp armed with one seta or seta absent ……… …………………………………………………………………………… Bryocyclops Kiefer, 1927
8. Coxa of P1–P4 with seta in inner distal corner ……………………………………………………9 – Coxa of P2–P4 without seta in inner distal corner … Allocyclops (Stolonicyclops) Reid & Spooner, 1998
9. Antenna with seta representing Exp; P4 Endp-2 with one apical spine and one outer seta ……… ………………………………………………………… Allocyclops (Psammocyclops) Kieffer, 1955
– Antenna without seta representing Exp; P4 Endp-2 with two apical spines ……………………… ……………………………………………………………… Allocyclops (Allocyclops) Kieffer, 1932
description: Published as part of Boonyanusith, Chaichat, Sanoamuang, La-orsri & Brancelj, Anton, 2018, A new genus and two new species of cave-dwelling cyclopoids (Crustacea, Copepoda) from the epikarst zone of Thailand and up-to-date keys to genera and subgenera of the Bryocyclops and Microcyclops groups, pp. 1-30 in European Journal of Taxonomy 431 on pages 14-16, DOI: 10.5852/ejt.2018.431, http://zenodo.org/record/1254968