Suborder Zygoptera
Family Calopterygidae

Family Calopterygidae figure 1

Genus Neurobasis Selys, 1853

Large metallic green damselflies with densely-veined and distinctively-patterned wings. Females generally have smoky wings with large white pseudostigmata; males have hyaline forewings and reflective blue, blue-green or greenish hindwings, which they show off in dazzling courtship and territorial displays.

Family Calopterygidae figure 2

There are two primary groups—the blue, broad-winged species of the north and west (N. kaupi from Sulawesi, N. ianthinipennis from northern New Guinea, and a blue form of N. australis from northern New Guinea)—and the green, narrow-winged species of the south and east (a green form of N. australis from eastern and southern New Guinea, and N. kimminsi from southeast New Guinea). Between them, morphologically and geographically, is N. awamena, a narrow-winged, blue species from the foothills south of New Guinea's central range.

N. australis, the most widespread species, can be told by the more poorly-defined outer margin of the metallic blue-green reflections on the male hindwing, with rays emanating unevenly into the blackish wing apices. There is one named subspecies, N. australis misoolensis, known only from Misool Island to the west of New Guinea; the male hindwings resemble those of N. kimminsi.

 

Wing chart

Left column, top to bottom: N. awamena, N. ianthinipennis, N. kaupi, N. kimminsi.
Right column, top to bottom: N. australis: northern form, Tami River; northern form, Morobe Province; southern form, New Britain; southern form, Pimaga, Southern Highlands Province.

 

Family Calopterygidae map