28 



P. E. S. WHALLEY 



Dixoa jeanneli Viette, 1954 : 122. Holotype <$, Madagascar, in MNHN. 



Transferred to the Pyralidae, Pyraustinae (Whalley, 1967 : 2), where it was 

 placed, provisionally, in the genus Syngamia Guenee. 



Syncallia Guerin-Meneville, 1844 : 497. Type-species, S. stellata Guerin-Meneville, 

 by monotypy. River Casamance [Senegal]. 



This genus and species were placed next to Thyris by Guerin-Meneville, who 

 indicated that he thought they were related. The name has remained unused but 

 the description has now been recognized by Mr W. H. T. Tarns as that of a species 

 at present in Atteva Walker, Yponomeutidae. I am therefore transferring the 

 species and genus to the Yponomeutidae. The species at present known as Atteva 

 cateri Wals., will become a junior synonym of S. stellata Guerin-Meneville. 



Basal process 

 comb. n. 

 dorsal process of 

 tegumen 



distal spurs 

 (of tibia) 

 frenulum hook 



gnathus arms 



inner spur 

 (of tibia) 

 interfacetal hairs 

 juxta lobes 



median basal 



process 

 median juxta lobe 

 median process 



of valve 



minutely spined 



outer spur 

 (of tibia) 



DEFINITION OF TERMS USED 



See median basal process. 



New combination. 



A small dorsal projection on the tegumen of the male im- 

 mediately anterior to the uncus, characteristic of the 

 Pachythyrinae ( = dorsal hump, Whalley, 1968). 



Spurs on tibia nearest to tarsal segments. 



Small sclerotized loop from underside of costa of fore wing 



of male into which the frenulum is inserted. 

 The lateral processes from the junction of the uncus and 



tegumen which do not meet in the middle ( = brachia). 



When these arms meet the term gnathus is used for the 



whole structure. 

 Morphologically nearest to mid-line when insect is at rest. 



Hairs present on the eyes between the facets (PI. 24, fig. 130). 

 Frequently the juxta consists of two lateral processes and often 



a median plate ( = median juxta lobe). 

 The process, when present, is at the base of the valves of the 



male and may be variously modified. 

 See juxta lobe. 

 Any process on the valve, other than the median basal process 



(q.v.), in the male. Usually found on or near the middle of 



the valve itself. This process is not usually associated with 



the end of the sacculus. 

 Used in relation to the spines on the vesica of the male or on the 



bursa of the female, when viewed at x 100 magnifications. 

 Contrast inner spur (q.v.). 



