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Indiana University Studies 



GALL. — An elongate, slight swelling; polythalamous, with fifty 

 or more larval cells; differing from the galls of variety stellatx in being 

 more regular, of more uniform diameter up to 6. mm. On twigs of 

 Quermis hreviloha. 



RANGE. — Texas: Austin. 



TYPES. — 200 females, 3 galls. Holotype female, paratype females, 

 and gall at The American Museum of Natural History; paratype fe- 

 males and galls with the author; paratype females at the U. S. National 

 Museum, Stanford University, and the Museum of Comparative Zoology. 

 Labelled Austin, Texas; March 20, 1922; Q. hreviloha; Patterson collec- 

 tion number 24. 



Patterson states that these galls were first noticed in De- 

 cember, altho they doubtless had formed much earlier. 

 Pupse were in the galls about the first of January, and adults 

 emerged during the first two weeks of March. 



Plagiotrichus elongatus variety stellatae, new variety 



FEMALE. — Shows the following characters in addition to those 

 common to all varieties of the species: Antennae brown apically; parap- 

 sidal grooves not evident for more than half the length of the meso- 

 notum; median groove wanting; mesopleurse almost wholly puncto- 

 rugose, more hairy than in elongatus, in part or wholly dark to black; 

 fovese not distinct, wholly rugose at bottom; abdomen averaging darker 

 especially posteriorly; legs rufous brown, coxae darker basally, the hind 

 coxae almost black, the tibiae and the hind legs in general tending toward 

 a black; wing veins averaging moderately heavy, especially the first 

 abscissa of the radius, areolet of moderate size only; averaging slightly 

 larger in build than in elongatus, particularly in the width of the thorax 

 and the size of the abdomen. 



GALL. — An elongate, slight swelling; polythalamous, with a score 

 of larval cells. Differing from the gall of variety elongatus in being 

 more irregular, of varying diameter up to 8. mm. On twigs oi Quercus 

 stellata. . I ? 



RANGE. — Texas: Austin. Probably thruout a pc-.rc of Texas and 

 Louisiana. 



TYPES. — 93 females, 3 galls. Holotype female, paratype females, 

 and gall at The American Museum of Natural History; paratype females 

 and galls with the author; paratype females at the U.S. National 

 Museum, Stanford University, the Philadelphia Academy, and the 

 Museum of Comparative Zoology. Labelled Austin, Texas; March 23, 

 1922; Q. stellata; Patterson collection number 168. 



Patterson bred the first adults from March 14 to April 

 3, 1922 ; he found insects still emerging on April 2. 



Plagiotrichus elongatus variety rufopleurae, new variety 



FEMALE. — Shows the following characters in addition to those com- 

 mon to all varieties of the species: Color generally rich rufous g,nd 



