Till'; i.oNc-iioicNi:!) \V(>()i)-i!(»KiN(i i:i;i:'rM';s. 



1(IS7 



V\(t, 470. Suiicrda aiii- 

 il'ula Kub. Natural siztv 



the borers, with possihli' i-eeoiirse to the use of i-epcllniit washes, is 

 about all tlmt ean be done and in the majority ol' 

 instaiii-es sIkiiiM alt'oi'd ('(msidd'ablc |)i'(ite('t ion. in 

 one speeinien I'l'oni I'oi'ter ('ount>' the tips of olytra 

 ai'e acute and divai'ieate. 



^. vamluhi Fab. (Fi.u'. 470). b'li.u-th IT) •_>() miii.. 

 has the same range as niocshi. Tts larva is known 

 as the "ap]ile tree borer" and is sometimes vei-\' 

 dest ructixc to appb', crah-aiiple, dune hcrrv and 

 I'eddiaw. It attacks the tree near the base, and 

 several thicknesses of n('wspai)er, h)ose]y tied, oi* a wire ncttinii' ke|»t 

 at a distanci' of half an inch from the ti'uid< for a heii^ht of three 

 fe(-t above the i^'round from May till Septend)er, will serve as a, pro- 

 tection. A heavy coating:' of wbitewasli with Paris tireen to tiie 

 Siwno. heii^ht will also often pi'cN'ent the beetle from depositing eg'g's. 



N. puiiclicollis Sa>-, leni;th 9-10 nnn., bi-eeds in the [)oison ivy, 

 /i7/;/.s- radicaiis L., and occurs about the middle of June on that 

 plant. 



LIOO") ((;4S5). SAn:i{i)A tiudkntata Oliv., Ent, IV, 1705, ;;0. 



Eloiigiite, slender, subc.vliiidricMl. P.laelvisli-brown to 

 piceons. rather densely clothed with tine, gray, prostrate 

 ^^""'^ imbeseence. that on under surface longer and more con- 

 ,/ 3 siiicuous; thorax with an orange strii)e each side extend- 

 ing onto liead. where it divides and encircles an eye, 

 nsnnlly with two black dots each side below the strijve; 

 el.vtra each with a narrow, submarginal, orange strijie 

 from which proceed three bands, the first nearly trans- 

 verse except at tip, the other two oblique and usuall.v 

 joining those from opposite side at suture. Thorax and 

 elytra rather coarsely and sparsely punctate, the latter 

 with tills sniitruncate. Length 0-14 mm. (Fig. 471.) 



Throuuliout the State; frequent. :^Iay 'JO-duly 10. This beetle 

 is commonly known as the "elm ])orei-, " as the larva' are very in- 

 jurious to the white and slippery elms, especially to the former 

 when planted as a shade tree. The first signs of its attack are 

 usually seen in the lighter, thinner foliage, followed by a dead 

 liml) here and there. Indications of boring soon appear, and the 

 dark sawdust collects in crevices of the ])arl\, and. after the attack 

 has prouri'ssed for some time, large portions of the bark may ])e 

 easily pulled fi-om the tree. The inner portion of tin; bark may ])e 

 lit(M-ally a mass of mines or burrows, and if tln^ work has not gone 

 too far, numei'ous whitish. Ilattened, legless grubs may be fottnd in 

 the channels tliey have excavated. 

 [60—23402] 



Fig. ill. X IJ. 



(After Rilcy.) 



