122 
Psyche 
[Vol. 92 
may also prove to be a species of Philoliche. Moucha (1976) listed 
bazini as a species of Philoliche, but this is unlikely since Surcouf 
(1922) described it as having well-developed ocelli and posterior 
cells of the wing wide open. Leclercq and Olsufjev (1975) list it in 
Stonemyia, but this should be confirmed by examination. 
Thus, in the Palaearctic Region, only yezoense has been definitely 
confirmed as belonging in Stonemyia, but bazini and caucasica may 
also belong there. 
Acknowledgements 
I wish to thank John Chainey, British Museum (Natural History) 
and H. Hayakawa, Hokkaido National Agricultural Experiment 
Station, Japan for their information on Palaearctic taxa included in 
this study; G. B. Fairchild, University of Florida, L. L. Pechuman, 
Cornell University and H. J. Teskey, Biosystematics Research Insti- 
tute, Ottawa for their suggestions and critical review of this paper; 
D. Chandler, University of New Hampshire, for reviewing an earlier 
draft of this manuscript. 
Summary 
Pegasomyia, new genus, is proposed to replace the name Pilimas, 
the generotype of which belongs in the genus Stonemyia. Pegaso- 
myia contains two California species, abaurea (Philip) and ruficor- 
nis (Bjgot), the last of which is designated as generotype of 
Pegasomyia. A row of bristles on the ventral surface of the scutel- 
lum of Stonemyia species will separate them from Pegasomyia spe- 
cies which lack such bristles. 
Lm-RATURK ClTIvD 
Brknan, J. M. 
1935. The Pangoniinae of Nearctic America (Tabanidae, Diptera). Univ. 
Kansas Sci. Bull. 32: 249 401. 
CHAINI-Y, J. E. 
1983. Afrotropical Tabanidae (Diptera): The genus Philoliche Wiedemann, 
subgenus Onimatiosteres Enderlein. Ann. Natal Mus. 25: 453-474. 
LI'X'I.hrcq, M. & N. G. Oi.sui jhv 
1975. Catalog des Tabanidae (Diptera) Palearctiques. Bull. Ann. Soc. r. beige. 
Ent. Ill: 25 36. 
