Biodiversity and Biogeography of Chthamalid Barnacles from the North-Eastern Pacific (Crustacea Cirripedia) Author Benny K. K. Chan Author H. - N. Chen Author P. R. Dando Author A. J. Southward Author E. C. Southward text PLoS ONE 2016 2016-03-09 11 3 1 51 journal article 30901 10.1371/journal.pone.0149556 f02345d5-4425-434a-8574-883833ae0b6f PMC4784953 26958842 1161582

Table 4. Segment counts (n = 5 individuals) of Chthamalus in the Tropical Eastern Pacific waters.

	C. hedgecocki	C. anisopoma	C. alani	C. panamensis	C. newmani
Note: cirrus I of C. anisopoma has bidenticulate setae without basal guards, whilst cirrus I of C. alani nom. nov. and C. newmani sp. nov. has bidenticulate setae with or without basal guards. doi:10.1371/journal.pone.0149556.t004
Cirrus I: No. of segments in posterior ramus	5–7	6–7	5–6	5–7	6–7
Cirrus I: No. of segmentsin anterior ramus	7–9	7–8	6–8	6–8	8–9
Cirrus I: No. of segments in posterior ramus with bidenticulate setae	0 ± 0	1	1	0	1
Cirrus II: No. of segments in posterior ramus Cirrus II: No. of segments in anterior ramus Cirrus II: No. of segments in posterior ramus with bidenticulate setae with basal guards	5–6 5–6 1–2	5 6–7 4	4–7 5–6 2	5–7 6–8 1	5–7 7–8 3
Cirrus II: No. of segments in anterior ramus with bidenticulate setae with basal guards	1	2	1–2	1	2
Cirrus III: No. of segments in posterior ramus	14–17	13–14	11–16	12–16	17–19
Cirrus III: No. of segments in anterior ramus	13–19	13–19	11–16	16–22	18–23
Cirris III, anterior/posterior length ratio	0.9–1.0	0.8–1.2	0.8–0.9	1.4–1.5	0.9–1.2