XIV, 5 Uichanco: Philippine Plant Galls 539 
Illigera luzonensis (Presl) Merr. Hernandiacez. 
Petal galls. Adult midges not collected. 
Polythalamous; consisting of abnormal, irregular enlarge- 
ment of petals; concolorous with corresponding parts of normal 
flowers; fleshy; nonpubescent. Chambers subellipsoid; embed- 
ded in the succulent tissue of the galls. Sepals of flowers 
affected by the gall abnormally enlarged but not swollen. 
Diameter of infested flower, 16.5 millimeters; of normal 
flower, 4.5. 
LUZON, Mount Maquiling, at altitudes of 100 to 300 meters 
(C. Mabesa). September, 1917. Type gall No. 18163, College 
of Agriculture collection. 
Not common. 
Leea manillensis Walp. Vitaces. 
Leaf galls caused by Lasioptera manilensis Felt. 
Monothalamous; irregularly and elongately subglobose; part 
of the gall appearing on upper surface of leaf and a correspond- 
ing inferior lobe on nether surface. Superior lobe smaller than 
inferior; the former sometimes flushed with carmine, other- 
wise uniformly lettuce green throughout; skin smooth, non- 
pubescent; the original puncture of the ovipositor usually 
marked by a small, infundibular, eccentric depression. Inferior 
lobe generally carmine, with a thin lettuce green border; gen- 
eral contour more or less wavy in outline; skin smooth, non- 
pubescent. Leaf lamina immediately adjoining gall convoluted 
circumferentially. 
Interior fleshy; flesh light green, semitranslucent. Chamber 
located centrad along longitudinal axis of gall; about three- 
fourths the length of the gall; curved downward at one end; 
wall hard but brittle. Opening at inferior lobe; not visible 
until the midge is ready to emerge, when the part at which the 
opening should appear becomes darker than the rest of the gall 
surface; then the opening gradually becomes visible as the cir- 
cular flap is pushed out. 
Length of superior lobe, 7.5 to 9.5 millimeters; width, 5; 
thickness, 3 to 5; length of inferior lobe, 7 to 9.5; width, 5.5 to 
7; thickness, 4 to 5.5. 
Luzon, Laguna, College of Agriculture, Los Bafios, at alti- 
tudes of 45 to 150 meters. March, 1917. Type gall No. 18318, 
College of Agriculture collection. 
165559——6 
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