Megalagrion mauka spec. nov. from Kauai, Hawaii (Zygoptera: Coenagrionidae)

The new sp. (holotype d, allotype 2: Kauai, Hanalei County, Hawaii, Kalahau Trail at Haena; 15-111-1995; deposited at FSCA, Gainesville, FL, USA) is described and compared with its closest relative on Kauai, M. paludicola Maciolek & Howarth. M. mauka differs in the larger size and black, not red venter. Male paraprocts are shorter, more ascendant but not convergent as in M. paludicola. Females lack the median notch in the pronotum’s posterior lobe as seen in M. paludicola.