THE PHILIPPINE 



Journal of Science 



D. General Biology, Ethnology, » 



AND Anthropology V^/^ 



Vol. XII MARCH, 1917 No. 2 



THE DERBID^ OF THE PHILIPPINE ISLANDS 



By Frederick Muir 

 {The Hawaiian Sugar Planters' Experiment Station, Honolulu, Hawaii) 



ONE PLATE AND FOUR TEXT FIGURES 



The Philippine Archipelago bids fair to be one of the richest 

 regions in the world in the delicate little insects included in 

 the family Derbidse. For many years the four species recorded 

 by Stal ^ were all that were known from the Archipelago ; Banks 

 has added a few species, and Melichar, working upon a part 

 of Professor Baker's collection, has added others. The present 

 paper brings the total to 98 species in 39 genera. There are 

 about a dozen species of the Rhotaninse that I have not yet been 

 able to identify satisfactorily, so that the total number of species 

 now known is well over one hundred. 



The material I had at my disposal was the large collection 

 made by Prof. C. F. Baker, collections belonging to the Philippine 

 Bureau of Science and the College of Agriculture, and collections 

 made by myself during my three visits to Luzon. The greater 

 portion of the Baker collection and all of my own were made on 

 Mount Maquiling and in the neighboring district of Los Bailos, 

 situated in Laguna Province, Luzon; apart from these, a few 

 specimens from Baguio, Mount Banahao, and a few other local- 

 ities are all we have of the Derbidse of Luzon. The large island 

 of Mindanao is represented by small collections from Davao, 

 Zamboanga, and one or two other localities; there are a few 



'0/-y. Vet. Akad. Fork. (1870), 27, 750. 



147575 49 





