REVISION OF LEUCOSPIDAE 205 



subregion, ranging from Maluku to north-eastern Australia and the Solomons. 

 The New Caledonian Leucospis antiqua Walker is closely related to the aruina- 

 group, but differs in having a distinct discal carina on pronotum. 



Leucospis aruina Walker 

 (Text-fig. 239) 



Leucospis Aruina Walker, i860 : 19, $. LECTOTYPE <$ (here designated), Sundas: Aru 



Island (BMNH) [examined]. 

 Leucospis my solica Kirby, 1883 : 69-70, §. Holotype §, Maluku: Mysol Island (BMNH) 



[examined]. Syn. n. 

 Leucospis muiri Brues, 1925 : 25-27, <J. Holotype $, New Guinea: Papua, Laloki (MCZ, 



Cambridge) [examined]. Syn. n. 

 Exoclaenus miltoni Girault, 1926 : [1], $. LECTOTYPE Q. (here designated), Australia: 



Queensland (Nelson =) Gordonvale (QM, Brisbane). Syn. n. 



The types of aruina, mysolica and muiri were studied and compared with the 

 other material mentioned below. The original material of aruina consists of one 

 male but there is a female, possibly of the same lot, in UM, Oxford, similarly as 

 in the case of mysolica, in which, however, Kirby states that the description was 

 made from one female, now labelled as holotype. 



I base my interpretation of E. miltoni on a female identified by Dr E. F. Riek, 

 who examined the Girault types and also on the information received from Mr 

 E. Dahms, who compared the type with my key and agreed that it runs to aruina. 

 The single original specimen of miltoni is accepted as lectotype, in co-operation 

 with Mr Dahms, who informed me that the specimen was labelled as type by Girault 

 himself, but bears as locality name 'Gordonvale H.Q., May, 1920', whilst Girault 

 stated that miltoni came from 'Nelson, May, 1920, Dodd\ According to Mr Dahms 

 Nelson is an earlier name of Gordonvale, near Cairns. 



The females from the Solomon Islands have the yellow band on the broadest part 

 of gaster narrower and shifted forward to the level with the tip of the ovipositor, 

 but otherwise I cannot distinguish them from the other specimens. 



In the male of L. aruina the exposed (sculptured) part of the sternites is unusually 

 narrow, all sternites appear longer than broad; the middle ones to penultimate fully 

 twice as long as broad; basal sternite has a high lamellate tooth; last sternite is 

 hardly expanded posteriorly, its postero-lateral sides are slightly reflexed upwards; 

 hind corners of sixth tergite are tooth-like but not very long. 



Biology. Host: Megachile ?rangii Cheesman, Apidae, in the Solomon Islands. 



Distribution: E. Indonesia (Maluku, Sundas, West Irian), New Guinea, Solomons, 

 Queensland. 



Material examined. 



Type data given in synonymy. 



Maluku: Mysol, 1 $, 1 <J (Wallace) (UM, Oxford). Sundas: Aru, 1 $ (UM, 

 Oxford). New Guinea: Irian Barat, Sorong, x. 1948, 1 $ (Lieftinck) (RNH, 



