. An annotated list of the important North American forest insects. Forest insects. The Spruce Gall-Aphid. ^^of- Figure 1. the spruce gall-aphid ILS, The winged female, which emerges from the gall in August. 116, Antenna of the winged female. 117, The pupa, which develops in the gall (From Bulletin 173, Maine Agricultural Experiment Station) "The sensorium of each of antennal joints III-V is confined to the distal half of the joint and extends not more than half way around the ; There is a group of smaller sensoria on V. The prothorax is smoky greenish yellow, with a dark trian
. An annotated list of the important North American forest insects. Forest insects. The Spruce Gall-Aphid. ^^of- Figure 1. the spruce gall-aphid ILS, The winged female, which emerges from the gall in August. 116, Antenna of the winged female. 117, The pupa, which develops in the gall (From Bulletin 173, Maine Agricultural Experiment Station) "The sensorium of each of antennal joints III-V is confined to the distal half of the joint and extends not more than half way around the ; There is a group of smaller sensoria on V. The prothorax is smoky greenish yellow, with a dark triangular area in the middle of the dorsum; the mesothorax is pale yellow, with a dark tri- angular area near the front margin in the middle. Near the caudal border of the metathorax is a subquadrangular dark transverse plate. In the normal position the wings are folded along the abdomen in a roof-like manner. The fore wing has a wide green costal margin and a green stigrna. The legs are slender and yellowish. The tarsi are two-segmented, with the basal segment very short and small and often concealed beneath the tip of the tibia. The abdomen is smoky yellow, with segments fairly dis- tinct. The groups of wax pores "are much as in the pupa except for the abdomen which is as follows: I with median groups comparatively large and merged, II median groups separated and composed of 2 pores each, V with two small groups between median ones referred to. I-VIII with distinct lateral groups on darkened area, III-VI with small groups of 2 or 3 pores each midway between median and lateral groups" (Patch, 1909).. 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 Craighead, Frank C. (Frank Cooper), 1890-; Perry, George S; Snyder, Thomas Elliott, b. 1885; Hopkins, A. D. (Andrew Delmar), 1857-1948; MacAloney, Harvey Jo
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Keywords: ., bookauthorhopkinsadandrewdelmar, bookcentury1900, bookdecade1900
