Major Groups | Insecta (insects) | Hemiptera (bugs) | Mesoveliidae Note: Key from Andersen & Weir 2004 |
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1. Apterous and macropterous forms known for most species; mesonotum (Mes) of apterous forms prolonged in middle, distinctly longer than pronotum (P)
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-Only apterous forms; mesonotum (Mes) not prolonged in middle, subequal in length OR shorter than pronotum (P)
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