Life History and Laboratory Rearing of Brochymena quadripustulata with Descriptions of Immature Stages and Additional Notes on Brochymena arborea (Hemiptera: Pentatomidae)1

Abstract

The life history of Brochymena quadripustulata (F.), was studied in Jackson County, Illinois, March–November 1975 and the immature stages were described. It was also reared in the laboratory. Adults of this univoltine species overwintered under the bark of dead standing trees, and became active in late April. They reproduced on immature black walnut, Juglans nigra L. The seasonal occurrence of the subsequent stages is discussed. Most old adults were dead by late June; new adults first appeared in August and were last observed in mid-October. This species was reared on cuttings of black walnut under a 12L:12D photoperiod and constant temperature. The incubation period averaged 10.65 days. Durations of the 5 subsequent stadia averaged 9.14, 19.16, 42.68, 58.39, and 42.78 days, respectively. Brochymena arborea (Say) was reared in the laboratory from egg through 4th instar. The incubation period averaged 11.00 days. The durations of the 1st, 2nd, 3rd, and 4th stadia averaged 7.00, 18.67, 42.83, and 73.80 days, respectively.