Western Subterranean

Introduction

This species is restricted to the western states, ranging from British Columbia south to western Mexico and east to Idaho and Nevada.

Recognition

Swarmer. About 3/8 inch long including wings. Body dark brown to almost black. Fontanelle (frontal gland pore) present, may be inconspicuous. Front wing with two dark, heavily sclerotized (hardened) veins in front portion, other veins unpigmented except for basal third. Wings brownish gray, with a few barely visible hairs. Front wing scale distinctly larger than hind wing scale, may overlap basal portion of hind wing scale. Leg with tibia slightly darkened tarsus pale.

Soldier. Head rectangular in shape, not narrowed toward front, length fully two times width. Fontanelle (frontal gland pore) dorsal. Mandibles lack teeth. Pronotum flat. Almost as wide as head.

Habits

These essentially are the same as for the Eastern Subterranean termites. The colonies usually are located in the ground. Location usually is below the frost line, but above the water table and rock formations. Mud tubes are built to cross areas of adverse condition between the colony and food sources. They can enter structures through cracks less than 1/16 inch wide. However, if a constant source of moisture is available, colonies can exist above ground and without ground contact.