April, iQid Bulletin of flic Brooklyn Entomological Society 45 



Euxesta exilis, new species. 



Wings with four transverse fasciae, the third and fourth connected along 

 both costa and posterior margin. Abdomen blue-black throughout; legs 

 dark. 



Female. Frons narrower than one eye, fer- 

 ruginous red, the parafrontals dusted with 

 white ; ocellar triangle and vertical plates 

 steel-blue ; two or three pairs of cruciate 

 bristles. Face and clypeus ferruginous and 3 



with pale opalescent blue bloom, the orbits Euxesta exilis Knab. 



dusted with white. Antennse bright fer- 

 ruginous, the third joint ovate, distally very slightly produced above but 

 not forming a distinct angle ; arista long, black. Palpi bright ferrugi- 

 nous. Thorax light metallic greenish blue, with a distinct bloom showing 

 yellowish reflections in some lights. Scutellum shining black, smooth, 

 without trace of pruinosity. Abdomen shining blue-black throughout. 

 Front coxse ferruginous, the others dark. Femora black, broadly ferrugi- 

 nous at apices ; tibiae dull ferruginous, tinged with black, particularly the 

 posterior pair; tarsi dull ferruginous tinged with black, especially distally. 

 Wings (Fig. 3) milky white, with four transverse black fasciae extending 

 to posterior margin, the first and second separated, the third and fourth 

 connected narrowly along both costa and posterior margin ; extreme base 

 of wing whitish tinged with ferruginous ; second fascia broad and much 

 widened posteriorly, at costa occupying subcostal cell and tip of costal, its 

 outer margin touching anterior crossvein ; third fascia broadened poste- 

 riorly and inclosing posterior crossvein ; last white interspace narrower 

 than apical fascia; anterior crossvein about at middle of discal cell, which 

 latter is slightly longer than last section of fourth vein ; last section of the 

 fourth vein distinctly bent upward in its outer half, the third vein in its 

 opposite portion more gently bent downward, the submarginal cell thereb}' 

 becoming broader in the margin, the first posterior much narrowed. 

 Calypteres and halteres white. 



Length : Body about 4 mm., wing 4 mm. 



Philippine Islands, probably Manila, five specimens (Ace. no. 1779, Bu- 

 reau of Agriculture, Philippine Islands). 



Type: Cat. No. 201 16, U. S. Nat. Mus. 



The genus Euxesta has heretofore been considered peculiar to 

 the Western Hemisphere, where it is represented by a large num- 

 ber of species. Hendel, in his Ulidiinse (Genera Insectorum, 106 

 Fasc, 1910), lists no less than 54 species and many others are 

 still undescribed. It is therefore safe to assume that the present 

 species is of American origin. Quite likely it was introduced 

 from Mexico in the early days when the Spaniards maintained 

 regular communication between Acapulco and Manila. Botan- 



