. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THK WKS'IKKN IM N K-DK^^TUOYINC I?.\ RK liKKTLK 25 , ]t is |)n)lml)l(' (hill :il lii^'licr clcvMlioiis and farther iiortli the niajoritv of the hroods would not develop in n\ueh less thnn a year's time and thai at more south- ern and warmer localities in the Pacific Coast re»;ion there would he two coiu|)lele tjenerations and j)ossil)l\' a partial tliird. Wlien first transformed, in May and June, the youn<]: hec- tics have very soft, deUcate tis- sues. They therefore remain in their pupa case.'? until their bo
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THK WKS'IKKN IM N K-DK^^TUOYINC I?.\ RK liKKTLK 25 , ]t is |)n)lml)l(' (hill :il lii^'licr clcvMlioiis and farther iiortli the niajoritv of the hroods would not develop in n\ueh less thnn a year's time and thai at more south- ern and warmer localities in the Pacific Coast re»;ion there would he two coiu|)lele tjenerations and j)ossil)l\' a partial tliird. Wlien first transformed, in May and June, the youn<]: hec- tics have very soft, deUcate tis- sues. They therefore remain in their pupa case.'? until their bodies are fully hardened or cliitinized. AVIumi nearly ready t) emerfje, the adults hore their way almost to the sui'face of the hark (fifj;. 12, d), hut pause before emer«!;ini:;, ai)pearinti; to rest in the burrows they liave just made. They do not, how- ever, lioUow out the space im- mediately adjoining]: the pupa case, as is the liahit of another species of this jjenus. When quite ready to emertije, the bee- tles continue their burrows out throu<i:h the remaining; jiortion of the bark. The individuals of a brood do not appear to emert^e sinndtaneously, but they come forth at irre<;ular in- ters''als unt il all are out, leavintr the bark thickly punctured wit li small, round, clean-cut holes. as shown in fijjure 12. After leavin<^ the tree or trees in which they went tlirous in which to deposit e«;<;s. They may select trees close at han<l or may lly tpiiie a lon«;distance before making'a select enter the ii\ inir bai"k of recent 1\- felled trees. L. ;. 11.—Till- wesltTii pun liinilntclnniis hreririimi*): 1' rcc. (OrJKiiinl.^ ion. T Hire nui hey will libers of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Entomology. Washington : G. P. O.
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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectentomology
