. An illustrated descriptive catalogue of the coleoptera or beetles (exclusive of the Rhynchophora) known to occur in Indiana : with bibliography and descriptions of new species . Beetles. Fig. 541, X 10. (After Forbes.) Ambrosia trifida L.; also on elder and other weeds. *2258 (6990). Systena frontalis Fabr., Syst. Eleut, I, 1801, 300. Resembles hudsonius very closely. Usually a little broader and less shining, the head reddish or reddish-yel- low ; antennae and legs mostly pale. Thorax more distinctly and elytra less coarsely punc- tate. Males in both species with the last ventral segment no
. An illustrated descriptive catalogue of the coleoptera or beetles (exclusive of the Rhynchophora) known to occur in Indiana : with bibliography and descriptions of new species . Beetles. Fig. 541, X 10. (After Forbes.) Ambrosia trifida L.; also on elder and other weeds. *2258 (6990). Systena frontalis Fabr., Syst. Eleut, I, 1801, 300. Resembles hudsonius very closely. Usually a little broader and less shining, the head reddish or reddish-yel- low ; antennae and legs mostly pale. Thorax more distinctly and elytra less coarsely punc- tate. Males in both species with the last ventral segment notched each side, the middle lobe «-ith a deeply impressed triangular median line. Length . mm. (Fig. .542.) Throughout the State; less common than hudso- nias. llibernates beneath bark of soft maple and mullein leaves. February ll-September 22. Occurs most frequently on smart- weed {I'oliji/oinim), the greater ragweed and pin-wciMJ {('hriio/iodiitin). Fig. 542. X 10. (After Forbes.). 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 Blatchley, W. S. (Willis Stanley), 1859-1940. Indianapolis : Nature Pub. Co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1910
