X, D. 6 Baker: Studies in Philippine Jassoidea, IV 325 



well as does his type as figured. There seems to be no doubt 

 that the common mango insects here are forms of niveosparsus, 

 and after an extended study of large series of them, I cannot 

 but refer them to Chunra, amplifying Distant's description of 

 Chunra enough to give it generic standing as compared with 

 Balocha and Busonia. This, of course, cannot be made final 

 without a careful examination of the structural characters of 

 puncticosta Wlk., the type of the genus. 



The Philippine forms of niveosparsus present wide variations 

 in color of scutellum, as mentioned by Distant for Indian forms, 

 though the general plan of coloration is the same. Three lots 

 of specimens taken at separated points in the Philippines show 

 divergences in coloration and in minor structural characters, 

 and it seems probable that numerous other local forms will be 

 found. Most of the characters used below are variable within 

 narrow limits, averaging as described. 



Synopsis of the Philippine varieties of Chunra niveosparsa Leth. 



a\ Length of vertex into width between eyes more than six times; first 

 apical cell of tegmina two fifths the length of second. 

 6\ Distance between ocelli much more than half the width of front; 

 transverse impression of scutellum acutely bent. 



philippinensis var. nov. 

 6^ Distance between ocelli one half the width of front; transverse im- 

 pression of scutellum obtusely bent palawanensis var. nov. 



a^ Length of vertex into width between eyes less than six times; first 

 apical cell of tegmina about a fifth the length of second; transverse 

 impression of scutellum acutely bent lagunensis var. nov. 



Chunra niveosparsa Leth. var. philippinensis var. nov. 



The variety philippinensis differs from typical niveosparsus, 

 as described and figured by Distant, as follows: Median basal 

 spot of scutellum always long, narrow, triangular, sometimes 

 obsolete ; apex of clavus shining white-spotted ; two small, round, 

 submedian spots in posterior field of scutellum. 



The following structural characters may be added: Vertex, 

 and face as far as ocelli, thickly arcuately cross striate. Head 

 wider than pronotum, the length of vertex into width between 

 eyes somewhat more than six times; vertex about as long at 

 middle as at eyes. Face about as broad as long; ocelli nearer 

 to median line than to eyes, the distance between ocelli being 

 about the width of an ocellus more than the distance from eye 

 to ocellus; distance between ocelli more than half the width of 

 front ; clypeus several times longer than broad, greatly narrowed 

 centrally, the apical margin incurved; lorse longer than cly- 

 peus and twice its breadth at middle. Width of pronotum 



