T. K. Crosby’s research while affiliated with Manaaki Whenua - Landcare Research and other places

For the New Zealand mainland, 29 previously published two‐letter codes defining collection areas are reviewed, with their boundary definitions. An additional eight area codes are here defined for the outer islands of the New Zealand subregion: Kermadec Islands (KE), Three Kings Islands (TH), Chatham Islands (CH), The Snares Islands (SN), Auckland Islands (AU), Campbell Island (CA), Antipodes Islands (AN), and Bounty Islands (BO). More general area codes are added for the North Island (NO), South Island (SO), New Zealand (NZ), and the Ross Dependency (RO) in Antarctica. The main purpose of the codes is to facilitate retrieval and documentation of specimens.

The New Zealand species of Aleochara are revised. Six species are recognised: Aleochara puberula (Klug), A. subaenea Fauvel, and 4 new species — A. aucklandica (North Island: AK), A. complexa (Kermadec Islands), A. hammondi (South Island: MIC, WD, OL, CO), and A. watti (Three Kings Islands). All species are described, and diagnostic features are illustrated. Adults are mainly predacious on immature stages of cyclorrhaphous Diptera, and the larvae are parasitoids of dipteran puparia. "A. “ puber (Broun) and "A. “ semifusca Broun are excluded from Aleochara and tentatively assigned to Silusa Erichson. A phylogenetic analysis of the six species was carried out using the program PAUP 3.1.1.