INSECTS INJURIOUS TO THE LOCO WEEDS. 



41 



PLANT-BUGS, LEAFHOPPERS. ETC. 



Xumerous plant-bugs, leafhoppers, and related insects were ob- 

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

 these were in the nymph or ininiature stages, comparatively few 

 were identified specifically. The list follows : 



Alydii.s rurinus Say and A. pluto T'hl.. coreid plant-bujis bearing some relation 

 to tlio sqnasli bus, were among the number. Tbe 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. 



Daaycona Iiu>nili.s Fhl., another coreid of unknown habits. 



Geocoris griscus Dall., a plant-bug of the family Lyga>ida^. 



Hadronema milltaris Uhl., a small capsid or leaf-bug. It infests Amaranthns 

 and beets. Probably accidental. 



Stiphrosoma atrata Uhl., also a capsid, of unknown habits. 



PJiUwnus biliiicatus Say, a cei'copid leafhopi)er which probably feeds on 

 grasses. 



DeltoccphaJus flcrulosiis Ball, a jassid leafhopper. 



liruclwinorpha dorsata Fitch, a fulgorid. 



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

 bugs, especially in their, immature stages. 



MISCELLANEOUS INSECTS. 



Agromysa (rnciveuMs Fallen, a small fly, was reared from pupjip 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 larvsB found in buri'ows 

 In the stems of Ambrosia. The fly was reared 

 by the writer from mines iu garden peas col- 

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

 The insects issued .Inly 30. Pea leaves are, in 

 fact, quite often infested by this miner. 



TJnknon-n Iraf-hcctlc.—'Decembev 14, 1901, 

 Mr. D. P. INIarnm, Woodward, Okla., wrote of 

 an insect which fed upon the leaves of Astra- 

 galus moUissimus. During April of that year 

 he noticed that a few stems in each hill of loco 

 were stripi)e<l of leaves, and found on the plants 

 a small beetle which he believed to be a lady- 

 bird, although it did not have the bright spots 

 known to be present on CoccinolIid:T» inhabiting 

 that region. 



Bruchus ohsolctns Say (fig. 14) was stated by its describer to have been 

 found on a species of Astragalus, but recent researches show that the plant in 

 question was a related one, the goats" rue. Cracca (Tcphrosia) virginiana.'^ 



Bruchus aurcohis Horn. — Recorded as occurring on the flowers of Astragalus 

 in Owens Valley, Cal. (Insect Life, Vol. V., pp. IGO. 1G7). 



Vnknotcn hymcnoptcrous gull. — Among other material collected at Hugo, 

 Colo., were stems of Aragallus lambcrti containing elongated fusiform galls 

 one-half to one inch in length and about one-third that in width. Each of the.se 

 contained a single large hymenopterous larva ; these. h(jwever. were not reared. 



Fir., li.— Bruchus obsoletus : a. Beetle; 

 b.antennn; ^, prothornx. a, c, Much 

 enlarjred; b, more enlarged. (From 

 Rilev.', 



"An illustration of this instvt and its food plant were furnished in the 

 Annual Report of the Department of Agriculture for IMtJ. p. 17L'. PI. VII. 



