36 R. W. CROSSKEY 



slightly or strongly shining. Sublunular bulla flattened and greyish pollinose 

 or shining on upper part adjacent to lunula. Epistome weakly or moderately 

 prominent ............. 4 



- Scutellum with basal setae and without apical setae (or if a very weak pair of setae 



present simulating apicals then these situated in a preapical position on disc of 

 the scutellum) (Text-fig. 64) ; scutellar hairing confined to basal half or two thirds 

 of scutellar disc, usually the hindmost hairing rather erect and stronger than 

 remainder of hairing. Postscutellum very prominent, often narrowed, produced 

 backwards and flattened (sometimes medially slightly sulcate), always partly 

 visible when fly seen directly from above (Text-fig. 64). (J with some of the 

 hairing (sometimes also the setae) of the mesopleuron flattened and lanceolate 

 or broadly scale-like, similar flattened vestiture or scales often present also on 

 humeral callus or notopleuron [also on wing-bases and femora in some African 

 species] . Scutellum with posterior part ashy grey or brownish grey (conspicuously 

 contrasting with dark brown or black basal discal part when viewed from behind) . 

 Sublunular bulla rounded or knob-like and brilliantly shining. Epistome enor- 

 mously prominent and the face seen in profile very deeply concave (Text-fig. 28) 



subgenus MORMONOMYIA Brauer & Bergenstamm 

 4 Scutellar dorsum evenly convex. Wing with petiole of cell R 5 at least as long as 

 m-cu. Wings of both sexes clear hyaline. Claws of $ about equal in length to 

 last tarsal segment .... subgenus HYALOMYA Robineau-Desvoidy 



- Scutellum distinctly flattened on posterior half and with a rather sharp thin hind 



margin. Wing with petiole of cell R 5 conspicuously shorter than m-cu. Wings 

 of <§ dark brown anterobasally. Claws of $ enormous, obviously longer than 

 last tarsal segment .... Alophora hippobosca (subgenus uncertain) 



Tribe CYLINDROMYIINI 



This almost world-wide group comprises some very distinctive tachinids in which, 

 typically, the abdomen is very elongate and subcylindrical and in which palpi 

 are often lacking (as in all the Australian members); in addition to these obvious 

 features the tribe in the strict sense is characterized by having the coxae of the 

 hind legs widely separated from the base of the abdomen by a completely closed 

 and strongly sclerotized posteroventral declivity to the thorax (normally in 

 Tachinidae the median part of this declivity is membranous). The limits of the 

 tribe are not completely clear at present as it is uncertain whether a number of 

 intermediate forms should be considered as contribal with Cylindromyia Meigen 

 or not. These intermediate forms include, for example, the Oriental genus Curtocera 

 Macquart and Huttonobesseria Curran from New Zealand in which the posteroventral 

 thoracic declivity is closed as in Cylindromyia but in which there are strongly 

 developed palpi; such forms interconnect Cylindromyia and its immediate allies 

 with Hermya Robineau-Desvoidy, Clara Brauer & Bergenstamm, and like genera 

 in which there is a cylindromyiine body facies but in which the posteroventral 

 thoracic declivity is membranous medially (forming an 'open' bridge) and fully 

 developed palpi occur. It is not germane to consider the limits of the Cylindromyiini 

 on a world basis at present, but the following characteristics are noted as occurring 

 in all the Australian members and most of the extra-Australian members of the 

 Cylindromyiini sensu stricto (i.e. exclusive of forms with 'open' posteroventral 

 thoracic declivity and exclusive of forms possessing palpi) . 



