Art. XXIX.—Notes on the Hemiptera of the Kermadec Islands, with an Addition to the Hemiptera Fauna of the New Zealand Subregion.
Read before the Wellington Philosophical Society, 27th October, 1920; received by Editor, 31st December, 1920; issued separately, 20th July, 1921.]
Though the kindness of the Dominion Museum authorities I have been enabled to examine a small collection of Hemiptera made in the Kermadecs during 1908 by W. L. Wallace, of the W. R. B. Oliver expedition. Of the eight species represented, one is not in a condition to be determined with accuracy; one is pelagic, with a wide distribution in the Pacific; one is common to Australia and New Zealand, though rare in the latter; one is probably new; while all the rest are New Zealand species.
1. Glaucias amyoti White.
“Two specimens found on Denham Bay beach” (Sunday Island).
This handsome species is common in Australia, but rare in New Zealand.
2. Reduviolus saundersi F. B. White.
“Taken amongst weeds, Denham Bay…. Found preying on other insects.”
This species has a fairly wide distribution in New Zealand.
3. Halobates sericeus Esch.
Eighteen specimens—six females and twelve males—were found on Denham Bay beach after a heavy storm at sea. This is the first recorded occurrence of the extremely interesting pelagic genus Halobates Esch. in the waters of the New Zealand subregion. How far these specimens were brought from their usual habitat by the storm is, of course, uncertain, but this species is pre-emiently that of the North Pacific.
4. Two unidentifiable specimens, apparently of same species.
5. Melampsalta cruentata Fabr. var. subalpina Huds.
This cicada was found commonly amongst ngaio (Myoporum laetum). The twelve specimens, of which ten are males and two females, are very typical of the variety, and exhibit surprisingly little variation among themselves. It is impossible to separate them from specimens caught in the neighbourhood of Wellington.
6. Aka finitima Walk.
This, or a closely allied species, was common on the under-surface of leaves of nikau-palm (Rhopalostylis Baueri). As it is represented in the collection by nymphs only, the specific identity cannot be determined with any degree of certainty.
In addition to the species in the above list, there are specimens of a green Jassid found also in New Zealand, and of a Delphacid, both of which are in the hands of Mr. F. Muir, of Honolulu, who has kindly consented to determine them.
Since writing the above I have been informed by Mr. Muir that the Delphacid possibly represents a new genus allied to Micromasoria Kirkaldy; but the unique specimen is scarcely perfect enough for description.