INSECTS INJURIOUS TO THE LOCO WEEDS. 



41 



PLANT-BUGS. LEAFHOPPERS, ETC. 



Numerous plant-bugs, leaf hoppers, and related insects were ob- 

 served and collected at Hugo. Colo. As a considerable portion of 

 these were in the nymph or immature stages, comparatively few 

 were identified specifically. The list follow-: 



Alydvs eurinus Say and A. pluto Uhl., coreid plant-bugs bearing some relation 

 to the squash bug, were among the number. The former has been recorded 

 attacking Lima beans and cowpeas: hence, it is quite probable that both feed 

 on loco and lupines, which are of the same botanical family. 



Dasycoris hutnUia Uhl.. another coreid of unknown habits. 



Geocoris griseus Dall., a plant-bug of the family Lygaeida?. 



Hodronema militarist Uhl.. a small capsid or leaf-bug. It infests Amaranthus 

 and beets. Probably accidental. 



8tiphro8oma at rata Uhl., also a capsid, of unknown habits. 



PhUwnua bilineatus Say, a cercopid leafhopper which probably feeds on 

 grasses. 



Deltocephalus flexulosus Ball, a jassid leafhopper. 



Bruchomorpha dorsata Fitch, a fulgorid. 



Vabis ferns L.. a predatory form. It doubtless destroys many of the other 

 bugs, especially in their immature stages. 



MISCELLANEOUS INSECTS. 



Agromyza anciventris Fallen, a small fly, was reared from pupne at the 

 roots of Aragallus from Flagstaff, Ariz., received in April. 1907. from Mr. Geo. 

 Ilochderffer. We have office records of the rearing of this species from the 

 roots of clover and from larva? found in burrows 

 in the stems of Ambrosia. The fly was reared 

 by the writer from mines in garden peas col- 

 lected at Washington. D. C. August 10, 1904. 

 The insects issued July 30. Pea leaves are, in 

 fact, quite often infested by this miner. 



Unknown leaf-beetle— December 14. 1901, 

 Mr. I). P. Marum. Woodward. Okla., wrote of 

 an insect which fed upon the leaves of Astra- 

 galus mollissimus. During April of that year 

 lit- noticed that a few stems in each hill of loco 

 were Stripped of leaves, and found on the plants 

 a small beetle which ho believed to be a lady- 

 bird, although it did not have the bright spots 

 known to bo present on Coccinellida- inhabiting 

 that region. 



Bruchus OlSOletus Say (rig. 14) was stated by 

 b-un.l on a species of Astragalus, but recent researches show that the plant in 

 question was a related one. the goats' rue. caeca {Tephrosia) virginiana.* 



Brvchus aureolut Horn. -Recorded as occurring on the flowers of Astragalus 

 in owens Valley, CaL (Insect Life. Vol. v.. pp. 166, 167). 



Unknown hymenopterous gall— Among other material collected at Hugo. 

 Colo., were stems of Aragallus lamberti containing elongated fusiform -alls 

 One-half to one inch in length and about one-third that in width. Bach of these 



contained a single large hymenopterous larva: tbeso. however, were not reared. 



Pig. U. Urucftus obsuUtus .- a. Beetle; 

 b. antenna; •. pro thorax. u,<\ Much 

 enlarged; b, more enlarged. (From 

 Riley.', 



its desrriher to have been 



"An Illustration of this Insect and its food plant were furnished in the 

 Annual Report of the Department of Agriculture for is<.rj. ,,. i7i\ Pi. Vll. 



