. The Canadian entomologist. Insects; Entomology. 200 THE CANADIAN ENTOMOLOGIST Leng as Pelenomus sidcicollis Fahrs. (Curculionidae), and as nothing has ever been published on the biology of this genus I think these few notes may be of interest. The beetles were very abundant during August and early September, oftentimes five or six beetles being present on a single leaf. They feed largely on the leaf tissue, skeletonizing it; though this year, on account of the almost complete destruction of the leaves by the larvae, the beetles were forced to feed on the stems and mid-ribs of the leaves. The
. The Canadian entomologist. Insects; Entomology. 200 THE CANADIAN ENTOMOLOGIST Leng as Pelenomus sidcicollis Fahrs. (Curculionidae), and as nothing has ever been published on the biology of this genus I think these few notes may be of interest. The beetles were very abundant during August and early September, oftentimes five or six beetles being present on a single leaf. They feed largely on the leaf tissue, skeletonizing it; though this year, on account of the almost complete destruction of the leaves by the larvae, the beetles were forced to feed on the stems and mid-ribs of the leaves. These they cut into with their mandi- bles, and then eat the softer parts within. During the latter part of September the beetles became fewer and fewer in numbers, and there is no doubt that they hibernate somewhere amongst the fallen leaves and rubbish. After some search I found where the eggs are laid. Just beneath the lower epidermis of the leaves near the veins I found a few empty egg-shells. (Plate XVIII, Fig. 3). The eggs are laid singly and, as a result of the oviposition. the area in which the egg is laid dies and becomes brown. This dead area shows only on the lower surface, evidently the parenchyma not being suffi- ciently damaged. The larvae feed on the lower surface of the leaves almost entirely. They destroy the lower epidermis and parenchyma, leaving the upper epidermis intact. This soon dies, and large open spaces are left, giving the appearance shown in Plate XVIIT, Figs. 1 and 2. As the larvae do not possess legs they evidently move by the action of the large flat surfaces on the ventral side of each segment. These can evidently be moved slightly by muscular action, though I have never seen the lar\ ae actuallv crawl. m^-:'\- â -i ;.*y.;\-: â .â :â . f i- ;; !?&. 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 perf
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