INSECTS INJURIOL^S TO THE LOCO WEEDS. 



41 



PLANT-BUGS. LEAFHOPPERS, ETC. 



Xmuerous plant-hiiirs, leafhoppers, iiiul lelated inserts were ob- 

 served and collected at Hugo. Colo. As a consideral)le portion oi' 

 these weie in the nymph or innnature stages, comparatively few 

 were identified specitically. The list follows: 



Ali/diis ntriinift Say autl A. pluto I'hl., coreid plant-buss bearing some relation 

 to the squash bujr, were anionji the number. The former has been recorded 

 attacking Lima l)eans and cowpeas; hence, it is quite probable that both feed 

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



Diixijcoris hidiiili-s I'hl., another coreid of unknown habits. 



Cicocoris grisru.s Dnll.. a plant-bug of the family Lyg;oidR\ 



Hadronciiui iiulitaris T'lil.. a small capsid or leaf-bug. It infests Aniar.-intlius 

 and beets. Probably accidental. 



Sfiiilirosomd atnitu I'hl.. also a cajisid, of unknown habits. 



l'liU(vnus hUiiicdtus Say. a cercopid leafhojiper which iirobably feeds (»n 

 grasses. 



DcltofcphaluH fir. ml ox IIS Ball, a jassid leafhopper. 



firiichomorpJia dorsata Fitch, a fulgorid. 



Xabis ferns L., a predatory form. It doubtless destroys many of the otliei- 

 bugs, especially in their innnature stages. 



MISCELLANEOUS INSECTS. 



Agromijzn (oicivcnlris Fallen, a small tiy, was reared from jnipje at the 

 roots of Aragallus from Flagstaff, Ariz., received in April. in07. from Mr. Geo. 

 Ilochderffer. We have office i-ecords of the rearing of this sjiecies from the 

 roots of clover and from larvte found in burrows 

 in the stems of Ambrosia. The fly was reared 

 by the writer from mines in garden peas col- 

 lected at Washington. I). C. August 10, 1904. 

 The insects issued July .'iO. Pea leaves are. in 

 fact, quite often infested l)y this miner. 



Unhiioini /«'(f/-^rr'//r.— December 14. 1901, 

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

 an insect which fed upon the leaves of Astni- 

 !i<ilus nioUissiiniiti. During Ajiril of that year 

 he noticed that a few stems in each hill of loco 

 were strijjped of leaves, and found on the iilants 

 ,•1 small beetle which he lielieved to be a lady- 

 bird, althor.gh it did not have the bright spots 

 known to i)e present on Coccinellida' inhabiting 

 that region. 



Hnichiis ohsolciiis Say (fig. 14) was stateil by its describer to have been 

 found on a species of Astragalu-s. but recent researches show that the plant in 

 (piestion was a related one, the goats' rue. Cnieca (Tcpli rosin) rirgiiiica." 



BriirJiiis aiircoliis Horn. — Ilecorded as oecurring on the flowers of .Vstr.ig.ilus 

 in Owens Valley. Cal. (Insect Life. Vol. V., pp. KiC. KIT). 



Unknoun hi/iurnnptcroiis gaU. — Among other material colleeted at Hugo. 

 Colo., were stems of Anigdlliis hnnlxrti containing elongated fusiform galls 

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

 contained a single large Iiymenoi>terous larva: these, however, were not reared. 



Fig. 11.— Biuchiisohsoletus : a, Beetle: 

 6. antenna: r, prothora.x. a,o, Mmli 

 enlarged; ^, more enlarged. (From 

 Rilev.r 



" .\n illustration of this insect and its food plant were furnished in the 

 Annual Report of the Department of Agrieultin-e for ls!t2. ii. 172. PI. VII. 



