458 EUZOSTRIA ARUENSIS, VAR. 



NOTE XXXII. 

 ON A VARIETY OF EUZOSTRIA ARUENSIS, GORH. 



BY 



J. R. H. NEERVOORT van de POLL. 



Among a few insects from Goldie-River, New-Guinea 

 (30 miles inland from Port Moresby), I obtained an Ero- 

 tylid, which proved to belong to the newly erected genus 

 Euzostria Gorh. (Notes from the Leyd. Mus. X, p. 140, 

 pi. 7, fig. 6) founded upon a single specimen of a new 

 insect from the Aru-Islands. The comparison of my spe- 

 cimen with the description of this species {E. aruensis 

 Gorh.) , offering several differences , I was inclined to re- 

 gard my New-Guinean insect as a closely allied but dis- 

 tinct species. However, after a careful examination of the 

 type-specimen , I think it will be better to consider the 

 New-Guinean form as a variety, at least provisionally, until 

 the arrival of a more extensive material shall allow us to 

 obtain certainty. As the spotted thorax of my specimen 

 gives the insect a quite different and peculiar aspect, 

 I propose the name binotata v. d. Poll for this variety, 

 which may be characterized as follows. The face between 

 the eyes is nearly impunctate. The thorax is less convex , 

 the anterior angles are broader, the disc is ornated with 

 two round black spots , and the base narrowly edged with 

 black , more broadly so in the middle, which makes the thorax 

 apparently shorter. The large punctures are less numerous 

 but larger, the small punctures on the contrary still finer. 

 The yellow band of the elytra is narrower at the suture, 

 i. e. the band of each elytron is more triangular. Moreover, 

 the rows of piceous dots on the yellow band, which are 

 very distinct in the type, are hardly visible in the variety. 



Finally the colour of the thorax , of the apical elytral 

 spot and of the two last ventral segments is dirty yellow 

 instead of deep red. 



Notes from the Leyden Museum , Vol. XI. 



