. First[-ninth] annual report on the noxious, beneficial and other insects, of the state of Missouri, made to the State board of agriculture, pursuant to an appropriation for this purpose from the Legislature of the state . ve an en-f^-- J tirely dilferent shaped and smaller body, the abdomen be-ing short, contracted, and ter-minating in a fleshy and dus-ky penis-like protuberance;the limbs stouter, and thewings proportionally largerand stouter, with their veinsconnecting (Fig. 7, h). This shorter form (Fig. 8, ^) never has eggsin the abdomen, but, instead, a number of vesicles (, e), con
. First[-ninth] annual report on the noxious, beneficial and other insects, of the state of Missouri, made to the State board of agriculture, pursuant to an appropriation for this purpose from the Legislature of the state . ve an en-f^-- J tirely dilferent shaped and smaller body, the abdomen be-ing short, contracted, and ter-minating in a fleshy and dus-ky penis-like protuberance;the limbs stouter, and thewings proportionally largerand stouter, with their veinsconnecting (Fig. 7, h). This shorter form (Fig. 8, ^) never has eggsin the abdomen, but, instead, a number of vesicles (, e), contain-ing granulations in sacs. These granulations have much tiie appear-ance of spermatozoa, and seem to have a Brownian movement, butare without tails. This form has been looked upon as the male by myself, Planchon,.Lichtenstein and others. Yet I have never succeeded in witnessingit performing the functions of a male, nor has any one else that I amaware of. The males in all plant-lice are quite rare, and, in the greatmajority of species, unknown. Where known, this sex bears aboutthe same relation to the female as the shorter and smaller Phylloxerajust described does to the larger. These same differences observed in. ITEHooosTif CiiAKACTEii-;: — fl, ft, (Uflfieiit Aenatioii <ilfVcmt-wiiif;-; c, hiiKl-wing; f/, <,./, ^-h()^vil1i^ ilevfloii-iiifiit of wings. OF THE STATE ENTOMOLOGIST. 41 the winged insects obtain in the other species of the genus that areknown, and have always been lool^ed upon as sexual. Signoret, an au-thority on these insects, once so looked upon them,(10) but has latelydeclared the shorter form to be a female emptied of her eggs. If thisbe so, then the eggs must be laid before the insect arrives at maturity(a highly improbable circumstance) ; for the characteristics which dis-tinguish it are to be noticed in the pupa (Fig. 8, a), which is almost asbroad as long, with very large wing-pads and strong limbs ; while thewinged insect does not, as we have s
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectb, booksubjectinsects
