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- W2019012006 abstract "Alate parthenogenetic viviparous female. —Ground color probably greenish overlaid with black pigmented areas and shiny black thoracic muscular region. Body normal in shape with small spatulate setae and a few hairs posteriorly. Length, 1.75 mm. Head, normal, dusky. Ocelli raised on short cones. Compound eyes with tubercle, the median ocellus distant from the other two. Rostrum slender, extends to third coxae. Antennae short, dark, 5-segmented, with few short knobbed hairs lying almost flat against surface; imbricated; secondary sensoria circular; distributed as follows: III, 5—8 on the apical half; IV, 12014;4. Permanent sensory compound as illustrated. Lengths of segments: I, 0.17 mm.; II, 0.21 mm.; III, 0.30 mm.; IV, 0.16 mm.; V, 0.25 mm. (base, 0.15 mm. + spur, 0.10 mm.). Prothoracic tubercles prominent, cone-shaped. Legs normal with few hairs. Wings with clouded veins. Primary pair longer than body, 2.27 mm.; secondary pair, 0.73 mm.; radial sector only slightly curved; media 1-branched; cubitus and anal as usual; stigma distinct. Hind wings poorly developed, not extending to the tip of the anal of the forewing; with only radial sector; hamuli well developed. Abdomen marked with black spots, and irregular patches. Setae short, spatulate or knobbed and arising from dark areas. A light transverse band in front of cornicles and other non-pigmented areas as indicated in the figure. Spiracles on tubercles. Cornicles unique, except in the related genus Anomalosiphum described elsewhere in this article. They are black, relatively short, 0.17 mm. in length, cylindrical, enlarged just before and then sharply constricted to the flanged opening. At the largest diameter there are 4 prominent curved spines which may be enlarged apically in the nymphs. The apical constricted area is somewhat reticulated. On the dorsal median areas of abdominal segments VII and VIII, and posterior to the cornicles, are two pairs of prominent, black, slender imbricated and pointed tubercles—the shorter pair directly anterior to the larger hind pair. These tubercles may attain a length of 0.32 mm. They terminate in slender knobbed or hand-like enlargements which are specially prominent in the nymphs and apterous forms. The cauda is shallow, crescentshaped, broad and supports curved hairs." @default.
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- W2019012006 creator A5036309416 @default.
- W2019012006 date "1951-06-01" @default.
- W2019012006 modified "2023-10-17" @default.
- W2019012006 title "Two Rare and Closely Related Aphids from Australia and China (Hemiptera, Aphididae)" @default.
- W2019012006 doi "https://doi.org/10.1093/aesa/44.2.189" @default.
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