Lepidoptera, Butterflies of Guam Author Swezey, O. H. Experiment Station Hawaiian Sugar Planters' Associantion, Honolulu text 1942 1942-06-01 Bernice P. Biship Museum Honolulu, Hawaii Insects of Guam I 31 38 book chapter http://doi.org/10.5281/zenodo.5160043 9298158c-3c02-4ba2-ab8a-87c7f9c8e70b 5160043 6. Hypolimnas anomala(Wallace) . TODO Diadema anomala Wallace , Ent. Soc. London, Trans ., 285 , 1869 . Hypolininas anomala (Wallace) Fruhstorfer , Seitz Gross-Schmetterlinge de Erde 9 : 542-543 , 1912 . Ritidian Pt., April 22, Bryan; Tarague, May 17, Usinger; Mt. Alifan, l\fay 26,Swezey; Machanao, June 4, Swezey; Barrigada, July 22, Swezey; Ritidian Pt., Aug. 6, Swezey; Piti, Sept. 4, Swezey; Orote Peninsula, Sept. 27, Swezey. Twenty specimens, mostly reared. This butterfly was determined by comparison with specimens in the Bureau of Science, Manila. It was described from Java and Malacca . This is another abundant butterfly in Guam . Its caterpillars feed on Pipturus argenteus , a small tree of the forests. In one place on Mt. Alifan, they were so numerous as to defoliate the trees, and apparently had been doing this for one brood after another, so that the trees were badly injured. A butterfly was observed ovipositing on the underside of a leaf. The 360 eggs were laid in a compact cluster of one layer. At Machanao, a butterfly was observed at rest near another cluster which contained 631 eggs . On the same tree another TODO female was ovipositing, and the cluster contained somewhat fewer eggs. The caterpillars feed gregariously for a time, eventually becoming scattered when i1early full grown. They reach a length of 35 to 40 mm . They are black and very spiny, the head orange brown, and the eyes black. There are two long (4 111111.) spiny black rigid upright somewhat diverging projections on the top of the head. Each segment of the body has a transverse row of spiny upright yellow tubercles 2 111111.long, about six to eight per segment, those on the first segment less developed, only two on the last segment backwardly projecting. Legs black. Spiracles oval, black. The chrysalis is suspended on the underside of some appropriate object. They were quite numerous on the underside of stems of dead coconut leaves of adjacent trees. The chrysalis is about 20 111111.in length. It is testaceous with rows of sharp black tubercles on clorsum, and black lines showing the wing venation.