The tough external skeleton explains, perhaps, why no spray is strong enough to kill the fully grown insects without also injuring the young squash and pumpkin vines, and why the best method of prevention consists in screening the young plants with a wire screen until they have grown large enough to be immune from attack. If you can find the young insects which are not yet encased in such a hardened shell, spraying with a 10 per cent kerosene emulsion will stop up their breathing pores and asphyxiate them.
The one in the picture is an old specimen, preparing to go into winter quarters under the leaves and wait for the tender squash and pumpkin vines to appear above the ground next spring.
It is surprising how quickly they find these juicy shoots, which they pierce with their sucking beaks and upon which they lay the eggs which in a few days hatch out into a brood of small but voracious squash bugs.
A STRANGE-SHAPED BUG
(Euschistus tristigmus, Say)
A strange-shaped bug walked into the laboratory to have his picture taken, not willing, evidently, that he should be left out of the collection. The handbooks on entomology which I possess seem not to have heard of him. He is just a common, ordinary bug, but he, doubtless, has an interesting life for all our scorning of his acquaintance.