. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 160 bulletin: museum of comparative zoology 50. Wings when at rest held roof-like, vein Cu of fore wing distant from first anal vein; antennae of wingless agamic females three- jointed, of sexual forms four-jointed, of winged forms five-jointed; sexual as well as parthenogenetic females with beak; wingless agamic females secrete a waxy flocculence. Infesting only conifers; formerly known as Chermes AD&LGIDM a. Abdomen with five pairs of spiracles, the first not evident; new- born fundatrix with ring-like dorsal wa
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 160 bulletin: museum of comparative zoology 50. Wings when at rest held roof-like, vein Cu of fore wing distant from first anal vein; antennae of wingless agamic females three- jointed, of sexual forms four-jointed, of winged forms five-jointed; sexual as well as parthenogenetic females with beak; wingless agamic females secrete a waxy flocculence. Infesting only conifers; formerly known as Chermes AD&LGIDM a. Abdomen with five pairs of spiracles, the first not evident; new- born fundatrix with ring-like dorsal wax glands. (Pineus, Pineodes, Dreyfusia.) PINElNiE. Figs. 261-263. Hemiptera 261. Phylloxera, dorsal and ventral views. (Doten) Phylloxeridae. 262. Phylloxera, nymph, ventral view (Simanton) Phylloxeridae. 263. Phoenicococcus, larva (Morrison) Cylindrococcids. Abdomen with six pairs of spiracles, the first not evident; agamic young of two kinds, either (a) delicate summer forms, the first generation usually winged, with short rostrum, moulting four times, and not overwintering, or (b) chitinized, wingless, winter form, with long rostrum, moulting three times, which rest over summer and are active in fall. (Adelges (Fig. 255) ( = Cnapha- lodes), Gilletteella, Sacchiphantes) ADELGI1SLE Wings when at rest laid flat upon the abdomen, veins Cu and 1A fused at base forming a Y-vein; antennas three-jointed; parthe- nogenetic females with beak, sucking but not defecating; sexual forms without beak; wingless agamic females not secreting a waxy flocculence, but in Phylloxera they secrete a waxy 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
Size: 2144px × 1166px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
