5388 Philippine Journal of Science 1919 
Diplodiscus paniculatus Turcz. Tiliacez. 
Terminal stem gall caused by Schizomyia diplodisci Felt. 
Polythalamous; subspherical; prevailing color green with a 
thin grayish coating; nonpubescent, consisting of enlargements 
at the ends of lateral branches of the plant. Walls thick; 
fleshy. Greenish flesh, turning brown after being cut and ex- 
posed to air. Chambers ellipsoid; arranged subcentrad in a 
more or less regular longitudinal bundle with the distal ends 
closer together than the proximal. Opening not visible until 
the midges are about ready to emerge; then a crack appears on 
the distal or lateral area of the gall, depending on the direction 
toward which the smaller end of the chamber bundle points; 
an irregular cavity forms oe and connects with the cham- 
bers within. 
Average diameter of gall, 25.5 millimeters; of chamber, 0.75 
to 1 millimeter. 
LUZON, Mount Maquiling, at altitudes of 100 to 150 meters. 
March to August, 1917. Type gall No. 18314, College of Agri- 
culture collection. 
Fairly abundant during the months cited. The galls have 
the general appearance of fruits for which they are very often 
mistaken. 
Grewia stylocarpa Warb.  Tiliacez. 
Leaf galls caused by Asphondylia grewix Felt. 
Monothalamous; abruptly and thinly subreniform; yellowish 
green, changing to brown at maturity; nonpubescent. Wall 
thin; somewhat succulent; juice sticky. Chamber conforming 
with general outline of gall; inner wall smooth. Opening small; 
subcircular; without process; located at distal margin of gall 
plate. 
Width, 5.5 millimeters; height, 6; thickness, 1.25 to 3. 
On the upper surface of the leaf; arranged irregularly face 
to back in rows along the midrib. 
LuzON, Mount Maquiling, at altitudes of 60 to 200 meters. 
March, 1917. Type gall No. 18137, College of Agriculture col- 
lection. 
Occasional specimens were found near the trail leading from 
First Creek to Camp One. The causal midges are very difficult 
to breed, as the leaves and the galls wrinkle up and dry in less 
than one day after removal from the plant. 
