108 HYMENOPTERA FROM SARAWAK. 



One of the largest of the Oriental species. 



fsckn or/aster flavolineata , sp. now 



Black, largely marked with yellow ; two small marks on 

 $he lower part of the front, one on either side of the ocelli 

 behind, two lines on the mesonotnm, the basal half of the 

 scutellum, the post-scutellum and the median segment, except a 

 squarish black mark on the base, yellow ; legs pale yellow, the 

 apical half of the tibiae and of the tarsi black ; wings clear 

 hyaline; the fourth cubital cellule not much more than half the 

 length of the third. 9 . 



Long : 17 mm. 



Hab. Lingga, Sarawak. 



Antennas black, the apical joints of the flagellum brownish 

 beneath. Head black ; a curved mark on the vertex behind the 

 ocelli and touching the eyes and obliquely narrowed towards 

 the apex, the eye incisions, an ovate transverse mark over each 

 antennae, the lower orbits broadly, the sides and apex of the 

 clypeus, the outer orbits and the mandibles, pallid yellow. 

 The vertex is obscurely, the face somewhat more strongly, 

 punctured. Clypeus is smooth ; its sides are covered with long 

 silvery pubescence ; the apical tooth is clearly separated, twice 

 longer than broad, and its apex is slightly incised ; the black 

 mark has its sides at the apex prolonged, the part between them 

 at the base being also separated. The upper edge of the 

 pronotum is yellow, as is also the lower half of the propleurae. 

 Mesonotum black, except for two lines on the basal half, these 

 being dilated on the outer side at the base. The yellow mark 

 on the scutellum is dilated laterally. Post-scutellum yellow, its 

 apex black. Pleurae yellow, slightly streaked with fuscous ; 

 the median segment yellow, except for an irregularly squarish 

 black mark at the base. Legs yellow; the hinder trochanters, 

 the under side and base of the hinder femora, the basal two-thirds 

 of the hinder tibiae and the four apical joints of the hinder tarsi, 

 black. Wings clear hyaline, the stigma testaceous, the nervures 

 fuscous ; the fourth cubital cellule is half the length of the third ; 

 the third transverse cubital nervure is straight and slightly 

 oblique; the second is slightly, but distinctly, roundly curved on 

 the lower half. Abdomen black, thickly covered with longish pale 



