. 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. THE SAP-FEEDING BEETLES. 649 and among them are one or two of the most common and best known species of the family. Six species are listed from the United States, four of which occur in Indiana. KEY TO INDIANA SPECIES OF IPS. a. Thoi-ax broader at base than apex; nearly as broadly dilated as those in front. 6. Larger, length S or more mm.; middle and hind tibife of males sud- denly broader at apic
. 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. THE SAP-FEEDING BEETLES. 649 and among them are one or two of the most common and best known species of the family. Six species are listed from the United States, four of which occur in Indiana. KEY TO INDIANA SPECIES OF IPS. a. Thoi-ax broader at base than apex; nearly as broadly dilated as those in front. 6. Larger, length S or more mm.; middle and hind tibife of males sud- denly broader at apical half. 1250. obtusls. 66. Smaller, length not o\er 7 mm.; middle and hind tibite not different in the sexes, e. Body wholly black beneath. quadeiguttatus. cc: Abdomen and met j sternum red. saxguinolentus. aa. Thorax narrower at base; hind tarsi slender; elyti'a with large dull yellowish space enclosing black spots. coxfluentus. 1250 (3755). IPS oettsis Say. Bost. Journ. Xat. Hist., I, 1835, 158; ibid. II, &44. Oblong-oval, subconvex. Piceons black, shining; elytra each with two rounded, reddish-yellow spots, one at middle of base, the other slightly be- hind the middle. Entire upper surface rather finely and regularly punc- tured. Tips of elytra slightly oblique in both sexes. Length 8-12 mm. Vigo and Floyd counties; rare. iMay 29. Occurs in the middle anci southern Atlantic States. *1251 (3756). IPS QUADEiGUTTATUs Fab., Syst. Eleut, II, 1801, •580. Oblong-oval, subconvex. Black or piceous. shining; elytra usually with broad, irregular yel- lowish humeral spot and another smaller one be- hind the middle, these often reduced and vary- ing much in size, becoming at times mere yel- low points. Upper surface finely and sparsel.\- punctured. Tips of male elytra oblique; those of female rounded. Length i-7 mm. (Fig. 243.) Throughout the State ; common. Hiber- nates beneath logs, chips, etc. Hundreds sometimes accumulate in a small spac(^ at
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1910
