. Bulletin. Natural history; Natural history. Mav, 1968 Stannarii: Tin- Tiiru's of Illinois 2G3 Intermediate abdominal tergites with setae of middle patch, when present, widely spaced and not fused at base; on azalea azaleae 17. Abdominal tergites II-V with a complete row of posterior fringe setae, limbatus Abdominal tergites II-V with row of pos- terior fringe setae interrupted medially quercicola Heferothrips aesculi Watson Buckeye Thrips Heterothrips aesculi Watson (1915:50). 9, cf. Type-locality.—Gainesville, Florida. Female (macropterous).--Length distended nearly mm. Color dark brown
. Bulletin. Natural history; Natural history. Mav, 1968 Stannarii: Tin- Tiiru's of Illinois 2G3 Intermediate abdominal tergites with setae of middle patch, when present, widely spaced and not fused at base; on azalea azaleae 17. Abdominal tergites II-V with a complete row of posterior fringe setae, limbatus Abdominal tergites II-V with row of pos- terior fringe setae interrupted medially quercicola Heferothrips aesculi Watson Buckeye Thrips Heterothrips aesculi Watson (1915:50). 9, cf. Type-locality.—Gainesville, Florida. Female (macropterous).--Length distended nearly mm. Color dark brown except antennal segment III and most of IV which are yellow to yellowish brown, apex of each fore tibia and all tarsi which are yellowish brown, and subbasal region of fore wings and all of hind wings (except longitudinal median streak) which are off-white. Antennal segments III and IV each with a circumpolar sensory area com- posed of a staggered single row of small circular sensoria. Reticulations on prothorax weak, usually in the form of hexagonal designs. Posterior lateral margins of abdominal tergites I-VII with setae fused at base into comb plates; median area on abdominal ter- gites I-V bare except for a middle patch of setae, these setae separate and not fused; abdominal sternites III-VII with accessory setae in adfli- tion to the posterior setae; microsetae on abdominal segments I-VII sparse dorsally but numerous ventrally. Male (macropterous).—Length distended over 1 mm. Colored as in fe- male. General structure as in female except with numerous microsetae on lateral regions of the abdominal ter- gites and usually without accessory se- tae on abdominal sternites III-VII. Abdominal sternites without glandu- lar areas. Abdominal tergite IX with- out finger-like projections (Fig. 92). Apparently the buckeye thrips is confined in its range to southeastern Its northern limit up the Mis- sissippi River valley is reached in the southwestern tip of Illinois. In Il
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