Table 2 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Table 2. Morphological differences among species of Metacyclops Kiefer, 1927 recorded in Southeast Asia.
CharactersM. sakaeratensis sp. nov.M. brancelji sp. nov.M. woniM. thailandicusM. pectiniatusM. malayicusM. amicitiaeBody size of the female (µm)731–754886–964684–693443–486685–735 §, 750 †500610–660Body size of the male (µm)623–672706–764632–641NA520 §–530 †NA537–537Integumental pitsPresentAbsentPresentAbsentPresentNAAbsentTransverse suture on the genital double-somitePresent; continuousPresent; continuousAbsentPresent; discontinuousNANANANumber of segments of the female antennule11111111111112Relative length of seta representing exp to enp of the female antennaReaching beyond enp-3Reaching be- yond enp-3Reaching tip of enp-3Reaching not pass the distal margin of enp-2NANAReaching beyond enp-3Spinule ornamentation on the caudal surface of intercoxal sclerite in both sexesP3–P4P3–P4P4AbsentNANAP4Ornamentation on prominence of intercoxal sclerite in both sexesSpinulesSpinulesSpinulesAbsentNANAHairsSpine formula of exp-2 of P1–P43.4.4.33.4.4.33.4.4.33.4.3.33.4.4.33.4.4.33.4.4.3Length ratio of Seta III to seta VI of the femaleca 1.1ca 1.2ca 1.2 *1.8 *1.6 §,*, 1.7?0.6 *0.6 *Length ratio of apical spine to P4 enp-2 of the femaleca 0.8ca 0.8ca 0.80.9 *1 §,*, 0.9?, 1.09 †1 *0.82Length ratio of outer seta to apical spine of P4 enp-2 of the femaleca 1.3ca 1.3ca 1.4 *ca 2.5 *ca 1.3 *ca 1.0 *NALength of spine of the female P5 (µm)5.4–5.911.8–14.8NA6.5 *ca 5.6 §,*NA6.5 *Length ratio of spine to free segment of the female P5ca 1.16ca 1.50.9 *ca 1 *1 §,*, 1.3?,1.75 †1 *0.7 *Length ratio of outer seta to inner spine of the male P5ca 4.5ca 2.5ca 4.1 *NA4.4 †,*NA4.4 *Length of inner spine/seta of the male P6 (µm)7.4–8.913.8–15.812.5 *NA20 *NA6.3 *Length ratio of outer seta to inner spine/seta of the male P6ca 2ca 1.11.05 *NA2.2 §,*NA1.6 *Length/width ratio of caudal ramus of the female2.18–2.292.61–2.882.45–2.532.6ca 3ca 22.26Length/width ratio of caudal ramus of the male2.27–2.372.50–2.78ca 2.2NAca 3.3 †NA2.25
* = measured from the illustration of the description
§ = Malaysian specimens (Lim & Fernando 1985)
? = after Mercado-Salas et al. (2013)
† = Chinese specimens (Shen & Tai 1964)