| Show CERTAIN GERTAIN INSECTS ARE AHE OUR fRIENDS I How ilow the Dragon Flies Files and Lace LaceWings LaceWings I Wings Fight for the tho Farmer STORY OF THE APHIS LION Irot Hull lIall Cihos llon Before tho Normal Students At time th II ot of Utah by b J 1 II H Paul Not all Insects ate are our enemies Dm Om Foil gon lien are aro beneficial b to us UH through their entire life histories thud the Ul and time the caddis tiles lies aro are beneficial dur during durIng ing lag much of ot their history ond are lIU never novem harmful but hut time tho lace ties des are aro among the time best friends w have havo Those These tho the facts brought out In Prof flails Calls lectures before the tho nature study classes at itt the tho state university on Mon Monday day Ho lie spoke substantially us II fol follows follows lows Last liHt time wo 3 treated time the or grasshopper family nearly nil mill of o which ore are Injurious Today wo we shall consider tho the or om dragon lly II 11 order all nil of ot which are beneficial to us tie usAll usAll All dragon tiles should bo be spared The Tho commonest one cue tho the largo large darning nee ace needle die dle Is well known know but tho the whole group Is easily distinguished from the tho pre pro preceding ceding order by b tho the open and wIngs wing of ot the th dragon flies files while nil all the tho grasshoppers sho fold told their thel wings like fans tillIS No other order has this structure and Ind biting mouth parts TUB TIm DRAGON FLY ILY ILYThe The Tho larvae of ot this beneficial b Insect Is even more useful than titan the adult for tOl tho time adult foods feeds on gnats mos and Hies liles taken on the time wins wing the larvae In tho wilier water feed teed upon ulon wIg giers before the tho latter pass Into taos mos Those These larvae lanue furnish good na urn nature ture study tull immaterial They live ono one or two y us l d 1 In iii tho time water They can enn bo be botak boIn tak tul In n a from trum the bottom of or any pond pontI in or summer kept kepl Indoors under wa Sal I 1 and fed rell upon Ullon mosquito larvae or wrigglers Time The eggs of ot the dragon fly fi mire lire r dropped loosely Into Inlo tho time wa water walor water ter lor or attached to some somo submerged sub tl b stancu tanco As soon as they the hatch the time young an active predatory war warfare tare fare upon other othol Insects found In tIme water Including their own kind The Tha Th lower lip of or this larva larv grows glOS to such a size that It can bo be folded tallIed to cover the tho lower taco face like a It mask maRk so that tho the front view I resembles a 0 bulldogs face aee As an un Insect comes conies noar roar this title mask musk Is U dropped nod and darted out tho the Insect full fall fallIn In and is seized antI and drawn back Into the tho mouth When Whon hemm full tull grown time the nymph broad broud and lint Mat Is la unlike either Dither tho the slender larva miva that precedes or tho the slender dragon fly by II Into which It changes chanos It then thell crawls out of the tho wa wn water weter ter its skin splits down tho thu back and the time dragon fly lly mOrge Tho Tb lh adults adult capture their pro prey on aim the limo wing and tOed feed ed on almost nil all eds especially special the smaller ones the and th too tho midges Most of or tb timmy they seize with their feet teet mind and devour them so that it Is almost Impossible to B see RN O time the operation Files leafhoppers small butterflies and oven even small email of or their own family are by hy theao voracious creatures ono ommo of ot which will eat 40 housa Sues files inside of ot two tO hours hOuTS As they are thu mosquitoes which fly mostly In the evenings aro an not so V by b the adults as asby asby by b tho time larvae TUB TIlE DAMSEL DA EL FLIES There Thero are two kinds of ot dragon flies files however A smaller ono one that folds its Iti It II wings when at rest res les Is ls called tho the dam damn damsel eel sel fly These mire are graceful species s that fly lly over large largo bodies of ot still water and arc aro found In tim great SToat numbers In the tho reedy borders of or fresh water ponds flying low Another group live IIvo In wooded woodee places pinceR along the banks of or running streams Their wings are aro frequently dark their eyes protruding their bo ho bodies bodies hodies dies metallic In luster lustor THE rIlE ANT LION LIO Among the time foothills In sandy IlInd places In iii Utah In little circular depressions an nfl Inch or so deep doop lIves IIvo lIvesa n a strange creaturo creature tho the ant lion llon or or doodle bug It has hns wide toothed Jaws and devours ants and other Insects that slide elide Into Its trap at lit the bottom of ot which only Its hoad Is IA visible It throws the tho th dry rr carats of tho the ant out by b a n hIp flip of or Its lis head It Is tho larva Inra of ot an n Insect that re ye a II dragon fly Tho Thu eggs must bo be laid In the thc sand saud As the tho larvae hatch they dig little pits They Tho throw out the tho sand which they thoy first heap upon tho timo head by jerking the tho head Tho Time adult flies flics have hao short clubbed antennae long iong abdomens and while tho thug dragon meg files have hae no o antennae TIlE THE CADDIES FLICS Tho Time caddis flies aro also alum called case casp bearers Like tIme Iho golf caddy lIl they thoy carry a mm case III In which they the live IIvo In tho tIme larval stage for tor protection They may mil b ho bl found t In 10 mossy mOSS places In Iii rocks In rapids In bayous and amid In shallow Each gach larva builds fur for Itself a mu case either of ot or or or me sticks Out OUI of ot this 01 It thrusts Its head hend and antI to walk und and feed and tho tIme ease caso may mav bo bl b climbing n II rUck whence they thoy have havo heels been called walking sticks though trout know lenow some Homo kinds as ItS rock roll rollers For I ol Osh eat at 01 thorn them they the make good luau holt They are nr found almost in fre fresh h water Thoy ho can cub nn bo io brought into Inlo the tile school loom In ii water anti and their habits noted They hatch batch In summer Into Inlo little Hies which appear In imi swarms on Tho Iho lilts like lay theIr egGs on OJ tho time water MAY FLIES May Ma tiles Illes also called day flies Illes from coma time the met that their hives I m all as flying In him am Vel short hort re dragon tiles files Thoy lurO ur like tiles Ilex that the tho larvae live IIvo under Iono and anul have luo no un cases onsen ells h never feed cod livo IIvo only a n afew atea tea few tc w days but tho the live 1110 In III water about aGO ico day lI Thu they thoy live nl ci together two or em three times is us long longn n mis H In Ip fiut mutt tho time story that any Imy Insect lIves only 11 i t IB Is not hot true Till ru i Jm W FLIES These are aro pretty creatures known as PH tho tIme l arc preen green gr an In III color anti their eyes ea nn mn almost phosphorescent cont gleam Thoy Timy hey havo ha a ph lId disagreeable odor Insects are about two tITO thirds of lr nn fin Inch long I oil their gauzy wingo and eyes making them objects of oi rare Interest lt but bul they Rio aro oven oon Incite useful titan than ornamental Iho Ihie lly liy puts hilts n a drop of ot mucilage on out im Ibis leaf leut and than stretChes stretcher thin hum un Ut into a IL little rod mod halt half nil nit Inch high anti holds holde it there till It dries Then she lays nn aim egg at nl the time top of ot It I and amid continue time the process until she aho has mode made mu t l perfect farest of ot theo lines lilies Out Olt of this thin egg comes ll nn an aphIs lion liona a mm formidable looking little larvae Unit will rat eat any 1111 animal ho lie can get got First FirL ht lie climbs lImbs down Iown tho time rod Now N ott we Ve lee tile the wisdom of or tho thoI r fly Ily 11 But lImit Butor for or her hel Instinct in lit raising each cacti egg upon n it the tho first aphis lion 10 to hatch II atoll would speedily devour oil nil the others But ho lie cannot climb BO iso ho lie willies walks along the apple or Jr leaf seeking what ho may miL devour 11 COU 1 Ho no finds plant lice and consumes consume them lit III quan quantities titles Others hatch hutch and do 10 lIke lIkewise wise It Is 19 fortunate for tor us that they th do ml BO so Otherwise the thu plant lice would ho bo too many for to us as ne we w shall see soe eo Iut Ju t when the time aphis lion Is full limIt grown Irown he spins a n tiny tIll round cocoon scarcely his ils size and amid some somehow somehow how gets Into It Later n it still larger lace wing fly II cornea out nut of ot tho the tiny liny till thing which Is 18 scarcely larger than the top lop of er a n d pin The Th cocoons can caum be b found now 1101 under tinder tIme the cracked bark of It old apple trees They can be bo brought Ih hIm h and the time tiles diet will hatch In n a I warm room before eforo I school closes el el In JIny THE TIm APHIDES Time plant plan I louse aphis which the tho th thoun young oun or ot the time lacewing prevent from unduly multiplying would frequent various trees and plants Almost eve cIe every everI ry rI 1 plant has Its own kind or kinds of or louse IlI or aphis and amid tho aphides do In donot not go from plant to plant Asa As a J rule each reeds feeds upon only emily one lIe kind of or plant but hut sonic some willows mows and other vegetation tion linn may have havo kinds of or aphides They multiply enormously Government experts have havo Investigated the time plum or hop aphis which lives half hult Its ItH life lito on these thello two plants and have found that It has 13 generations in a n ceason eason all females bunnIes except the tho lost jaM Such Insects are said to be bo Each I aeh aphis hall haa ima young so en that time the total from troma a single female In a II single season wason ason would be bo boten beten ten Write the tho figure 10 and then odd amId 21 1 ciphers If It you on leslIe to 10 see what such tin un I number looks like when written Placed side by side In a n line Une 10 to 10 nn an inch maleo I lIno so 50 long Ion traveling at the rate mate of 01 pities miles per lair second would require over oer 2000 years to tt reach tho end of ot the time line lIno Tent these creatures do not so 80 Increase as asto asto asto to fill the earth Irth every summer slimmer s Is dui du tn to various causes The lace laco wing 11 n liy Is their greatest foe toe Then comes tho the ladybug and ond her liar larvae anti and the tho fly and Its lis grubs which like likewise wise consume the aphids ns as they tho ap appear appear pear peor BO so that tIme the Indescribable hut but al always always always ways Impending catastrophe Is prevent cl cd REMEDIES RE FOR FOIl PLANT LICE For the tho green reon aphis of or time the apple opple many of ot tho the eggs egg can be ho cut oft while pruning The Time eggs are aro laid on eu tho time tips of ot tho tim shoots Tho The remainder of ot this and most moat of ot the theother theother theother other Injurious species arc oro best beRt de do destroyed by spraying Just tho leaves havo started with a n tobaccoS tobacco solution or with kerosene emulsion The tobacco solution can he be made mado from froma a n sheep dip by hI b making it three times ns as strong as IS recommended for 01 sheep |
