TABLE 4. Idiosepius meristic characters: arm and club sucker counts.

	♂ I. hallami n. sp.	♂ I. pygmaeus	♂ I. thailandicus	♀ I. hallami n. sp.	♀ I. pygmaeus	♀ I. thailandicus
ASC1	16–19	15–24	11–16	22–28	21–26	14–26
ASC2	17–22	15–27	14–19	24–29	28–31	18–25
ASC3	18–24	18–24	13–18	22–34	25–31	15–27
ASC4L 1♂	7–10	2–4	4–7	–	–	–
ASC4R 1♂	4–9	1–4	3–5	–	–	–
ASC4 1♀				22–31	22–41	17–28
TClRC	27–37	49–57	32	37–46	71–83	45