. Bulletin of the Department of Agriculture. Agriculture. SOUTHERN GREE\T PLANT-BUG. COMPARISON WITH OTHER SPECIES OF NEZARA. Four species, namely, virichda L., pcnnsylvanica DeG., Jiilaris Say, and marginata P. B., usually have been considered as belonging to the genus Whether considered of sufficient importance to be a generic character, or only a spe- cific one, the difference in the shape of the orifice (osteolar canal) is the most satisfactory character for separating viridula from the other species. In viridula (fig. 6) the orifice is short, rather broad, truncated at the a
. Bulletin of the Department of Agriculture. Agriculture. SOUTHERN GREE\T PLANT-BUG. COMPARISON WITH OTHER SPECIES OF NEZARA. Four species, namely, virichda L., pcnnsylvanica DeG., Jiilaris Say, and marginata P. B., usually have been considered as belonging to the genus Whether considered of sufficient importance to be a generic character, or only a spe- cific one, the difference in the shape of the orifice (osteolar canal) is the most satisfactory character for separating viridula from the other species. In viridula (fig. 6) the orifice is short, rather broad, truncated at the apex, and does not extend more than half way to the lateral margin of the metapleura. In the other three species (see fig. 7) it is long and curved, becoming grad- ually evanescent, and extends almost to the posterior lateral angle of the Fig. 6.— Nrzara viridula: Portion of ventral surface ofmesothorax and metathorax, showing the ori- fice or osteolar canal. Coxae of legs of second and third pairs at right. Greatly enlarged. THE EGG. The egg (figs. 8 and 9) is cylin flattened on top. On the top ai. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Department : Supt. of Docs. , Govt. Print. Off.
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