Lepidoptera, Geometridae, Arctiidae, Agrotidae, and Pyralidae of Guam Author Swezey, O. H. Experiment Station Hawaiian Sugar Planters' Association, Honolulu text 1946 1942-12-20 Bernice P. Bishop Museum Bulletin 189 Honolulu, Hawaii Insects of Guam II 163 185 book chapter http://doi.org/10.5281/zenodo.5165313 058b438a-ffe3-452b-a286-9267419b3014 5165313 33. Hyblaea sanguinea Gaede , , 26 , 1917 ; Tams , Samoa 3 ( 4 ): 237 , 1935 . Eighteen specimens: Yona, May 12, Swezey; Umatac, May 14, Swezey; Tumon, May 30, Swezey; Machanao, June 30, Swezey; Sumay, July 15, Swezey; Orote Peninsula, July 18, Sept. 1, Swezey; Piti, July 13, Aug. 17, Sept. 12, at light, Swezey. One in Bishop Museum, Fullaway, 1911. This beautiful moth was described from Fiji and is also known in Samoa . It was very common in Guam , where we record it for the first time. Its caterpillars were always to be found on the leaves of Premna gaudichaudii . The leaves are spun together for shelter or hiding place, and pupation takes place in the same situation. The full-grown caterpillar is 25 mm . long; black, with two narrow, white dorsal lines, an interrupted white line above the spiracles, and a white line below the spiracles; spiracles narrow oval, whitish; underside and legs pale; head entirely black; setae of abdomen white, of moderate length. Chrysalis 15 mm . long; light brown; wing sheaths exten.d to apical margin of fourth abdominal segment; cremaster black, produceq and hooked into silk. Most of our specimens were reared from Premna ; one was from an undetermined Philippine tree. The caterpillars were often observed, but rearing was not attempted.