A new species of the small water strider genus Microvelia (Hemiptera: Heteroptera: Veliidae) from the Ryukyus, Japan, with notes on the distribution of M. kyushuensis Author Aiso, Takumi Laboratory of Entomology, Faculty of Agriculture, Tokyo University of Agriculture, Atsugi, Kanagawa, Japan Author Ishikawa, Tadashi Laboratory of Entomology, Faculty of Agriculture, Tokyo University of Agriculture, Atsugi, Kanagawa, Japan text Zootaxa 2024 2024-06-12 5468 2 350 360 http://dx.doi.org/10.11646/zootaxa.5468.2.6 journal article 298445 10.11646/zootaxa.5468.2.6 05118019-935c-49bc-9d81-f248c3b6e8b9 1175-5326 11616042 2F1BB275-16B6-42B4-8B50-610F210C494E

TABLE 1. Descriptive measurements of Microvelia minsa sp. nov. Unit: mm, range (mean ± SD).

Structure	Apterous male (N=15)		Apterous female (N=20)		Macropterous male (N=3) Macropterous female (N=3)
	Range	Mean ± SD	Range	Mean ± SD	Range	Mean ± SD	Range	Mean ± SD
Body length	1.60–1.81	1.71±0.06	1.67–1.98	1.83±0.1	1.81–1.88	1.85±0.04	1.89–2.00	1.96±0.06
Body width	0.58–0.74	0.66±0.04	0.70–0.85	0.77±0.04	0.79–0.81	0.80±0.01	0.83–0.88	0.86±0.03
Head length	0.31–0.38	0.35±0.02	0.33–0.45	0.39±0.03	0.35–0.36	0.35±0.01	0.34–0.41	0.36±0.04
Head width	0.42–0.50	0.47±0.02	0.48–0.54	0.51±0.02	0.46–0.48	0.47±0.01	0.49–0.52	0.51±0.02
Pronotum length	0.24–0.32	0.28±0.02	0.23–0.37	0.31±0.03	0.57–0.62	0.59±0.02	0.61–0.63	0.62±0.01
Pronotum width	0.53–0.65	0.59±0.03	0.62–0.73	0.67±0.03	0.79–0.81	0.80±0.01	0.83–0.88	0.86±0.03
Antennal segment I	0.15–0.19	0.16±0.01	0.15–0.18	0.16±0.01	0.15–0.16	0.16±0.02	0.16–0.17	0.17±0.00
Antennal segment II	0.14–0.16	0.15±0.01	0.13–0.17	0.16±0.01	0.15–0.16	0.16±0.00	0.15–0.17	0.16±0.01
Antennal segment III	0.15–0.20	0.18±0.01	0.17–0.21	0.19±0.01	0.16–0.19	0.18±0.02	0.17–0.19	0.19±0.01
Antennal segment IV	0.29–0.35	0.32±0.02	0.30–0.39	0.32±0.03	0.31–0.32	0.31±0.00	0.32–0.33	0.32±0.01
Fore femur	0.32–0.40	0.36±0.02	0.35–0.44	0.40±0.02	0.33–0.35	0.34±0.02	0.34–0.39	0.37±0.03
Fore tibia	0.28–0.38	0.31±0.03	0.28–0.37	0.32±0.02	0.28–0.30	0.29±0.01	0.29–0.31	0.30±0.01
Fore tarsus	0.15–0.21	0.18±0.02	0.17–0.22	0.20±0.01	0.19–0.20	0.19±0.00	0.15–0.21	0.19±0.03
Middle femur	0.41–0.49	0.44±0.02	0.42–0.50	0.46±0.02	0.43–0.46	0.44±0.02	0.41–0.46	0.43±0.02
Middle tibia	0.37–0.44	0.40±0.02	0.39–0.46	0.42±0.02	0.41–0.42	0.41±0.00	0.39–0.42	0.40±0.01
Middle tarsomere I	0.09–0.13	0.10±0.01	0.10–0.13	0.11±0.01	0.09–0.11	0.10±0.01	0.11–0.12	0.11±0.01
Middle tarsomere II	0.12–0.17	0.15±0.01	0.14–0.17	0.16±0.01	0.14–0.16	0.15±0.01	0.14–0.16	0.15±0.01
Hind femur	0.45–0.54	0.48±0.03	0.46–0.56	0.51±0.03	0.44–0.47	0.46±0.02	0.52–0.53	0.53±0.02
Hind tibia	0.53–0.65	0.60±0.04	0.57–0.68	0.63±0.03	0.59–0.62	0.61±0.02	0.59–0.65	0.62±0.03
Hind tarsomere I	0.10–0.14	0.12±0.01	0.10–0.16	0.13±0.01	0.12–0.13	0.12±0.01	0.11–0.14	0.12±0.02
Hind tarsomere II	0.14–0.17	0.16±0.01	0.15–0.18	0.17±0.01	0.15–0.16	0.16±0.00	0.15–0.16	0.16±0.01