Andricus montezumus

Irregularly rounded, polythalamous, as it ages becoming brown, rugose, fissured, length 55 mm, diameter 3.5 mm, on live oak.

Andricus montezumus

Quercus arizonica, oblongifolia, toumeyi, reticulata [rugosa]
Stem galls
Stem swellings or cells under bark
Woody, rugose, fissured, very hard inside.
[no image]

Andricus montezumus sp. nov.

Gall. — On the twig of a species of live oak {Ouercus sp.). Polythalamous. Composed of a number of irregularly rounded bodies, tightly grown together and forming a solid mass. The outer surface is leather-brown, rugose with a number of fissures and cracks indicating the individual galls. Inside it is light wood-brown and exceedingly hard, almost like solid oak wood, making it difficult to cut with a knife. Length, 55 mm.; width, 35 mm.

Habitat. — Mountains in Mexico, altitude 5000 feet.

This species has been in my collection for some years past, and I do not remember from whom I obtained it, and the exact locality from whence it came. All I know is that it was collected in the mountains somewhere in Mexico. A similar kind of gall was sent to me by Mr. Lewis H. Weld, who collected the specimen at Lake Chapala, Jalisca, Mexico, from the mountains at the west end of the lake, above San Pedrito, in the summer of 1910. The male is not known.