XV, 4 
Oshima: Formosan Termites 
321 
Formosa; Mr. Tetsukichi Katayama, chief of the chemical de- 
partment of the same institute; and Mr. Saichi Tasaki, my 
assistant, I have carried on my investigations and very fortu- 
nately have gained some satisfactory results, which are recorded 
in the following pages. Here I wish to express my sincere 
thanks for the courtesy shown by those gentlemen and to Dr. 
Tomoe Takaki, former director of the above-mentioned in- 
stitute, through whose most courteous assistance I have been 
able to continue my work for so many years. 
DESCRIPTIONS OF THE FORMOSAN TERMITES INJURIOUS TO WOODEN 
STRUCTURES 
Family MESOTERMITIDiE Holmgren 
Subfamily COPTOTERMITINM3 Holmgren 
Genus COPTOTERMES Wasmann 
Coptotermes formosanus Shiraki. Plate I, figs. 1 to 3. 
Coptotermes formosanus Shiraki, Trans. Ent. Soc. Jap. 2 (1909) 
239; Oshima, Rep. Term. 1 (1909) 33, pi. 1, figs. 1-3; pi. 2, figs. 
11, 12; Rep. Term. 3 (1912) 75, pi. 1, figs. 8, 28; pi. 2, figs. 3, 
21; Philip. Journ. Sci. § D 8 (1913) 276; Rep. Term. 4 (1914) 
2; Holmgren, Termitenstudien 4 (1913) 76, pi. 2, fig. 10; Hozawa, 
Journ. Coll. Sci. Tokyo 35 (1915) 92, pi. 3, figs. 18-20, text figs. 
22-25. 
Coptotermes gestroi Oshima, Zool. Mag. Tokyo 22 (1910) 376; Rep. 
Term. 2 (1911) 5; Nawa, Insect World 14 (1910) 597. 
Coptotermes formosae Holmgren, Termitenleben auf Ceylon (1911) 
192; Termitenstudien 2 (1911) 74; Annot. Zool. Jap. 8 (1912) 
121; Yano, Rep. Jap. For. Exp. Station 9 (1911) 62, pi. 4, figs. 
12 - 20 . 
Imago . — Head brown ; anteclypeus whitish ; postclypeus, an- 
tennse, labrum, and labial palpi brownish yellow; pronotum 
yellowish brown, with Y-shaped marking; mesonotum, meta- 
notum, and abdomen pale brown; legs yellow, tibia and tarsus 
darker; head, thoracic plates, and abdominal tergites densely 
pilose; wing stumps beset with hairs. 
Head round, fontanelle distinct; antennae 21-jointed, second 
joint cylindrical, nearly as long as third and fourth taken to- 
gether; third joint short, ring-shaped; eye round, markedly 
prominent; ocellus oval, separated from eye by a distance less 
than its shorter diameter; anteclypeus trapezoidal, narrower 
than postclypeus, the latter short and slightly swollen; pro- 
notum semilunar, anterior border concave, posterior border 
