442 Philippine Journal of Science »•** 



Wings (Plate II, fig. 6) in shape and venation as in the 

 preceding species, but with reddish veins. Costal border less 

 darkened, more yellowish, and extended in the middle to third 

 longitudinal vein ; at apex of wing a broad, rounded, dark spot, 

 which extends below beyond fourth vein, entering with its 

 lower border into second posterior cell; end of first posterior 

 cell narrowly subhyaline, the apical spot being thus rather 

 separated from wing border; inwardly the apical spot extends 

 to a little before upper end of hind cross vein. Anal stripe 

 well developed, but not reaching hind border of wing and not 

 dilated at end. First basal cell infuscated above second; hind 

 cross vein not bordered with fuscous. 



IV. Genus MONACROSTICHUS Bezzi, 1913 



The long, convex, and bituberculate face, the lack of lower 

 orbital bristles, the continuous transverse suture of mesonotum, 

 the unpaired acrostichal bristle, the spinose front femora, the 

 narrow second basal cell, and the restricted base of the discoidal 

 cell are the main features of this very distinct genus. To these 

 may be added that the first posterior cell is narrowed at end, 

 and that the sixth longitudinal vein is not extended to the hind 

 border of the wing. The anterior supra-alar bristle is present, 

 while the middle scapular bristles are wanting. 



23. Monacrostichus citricola Bezzi. Plate II, fig. 7. 



Monacrostichus citricola Bezzi, Philip. Journ. Sci. § D 8 (1913) 323. 



Distinguished from all the preceding species of the genus 

 Mellesis by the peculiarly patterned face with entirely black 

 antennal grooves; by the yellow supra-alar stripes on the sides 

 of mesonotum, even a short posthumeral stripe being present; 

 by the complete black crossbands at base of fourth and fifth 

 abdominal segments; by the nonciliated third abdominal seg- 

 ment of the male; by the flattened ovipositor of the female; 

 and by the very simple wing pattern (Plate II, fig. 7). The 

 dark transverse band of the face in the present species is not 

 placed just above the mouth border as in M. conopoides or in 

 M. pedunculata; but it is narrow and placed toward the middle, 

 just below the upper facial tubercle; it is saddle-shaped, and 

 from its lower angle branches a short, vertical, dark stripe, 

 which runs to the upper mouth border. 



Luzon, Laguna Province, Los Bafios (Baker), reared from 

 Citrus fruits. I have seen only the typical specimens. 



