Entomologia Generalis (2001) 25, 255-264

D.L. Musolin and A.H. Saulich (2001)
Environmental control of voltinism in the stinkbug Graphosoma lineatum in the forest-steppe zone (Heteroptera: Pentatomidae)
Entomologia Generalis 25 (4), 255-264
Abstract: An experimental study under quasi-natural conditions in the forest-steppe zone was conducted to clarify the seasonal cycle of Graphosoma lineatum Linnaeus 1758 (Heteroptera: Pentatomidae), a species with a facultative adult winter diapause. It was demonstrated previously that if adults of a new generation emerge in the middle of July all females enter diapause, and thus this species produces only 1 generation per year. In the present study, the emergence of adults was artificially shifted to the end of May-2nd half of June what resulted in the production of 69-71% females. These results supported the possibility that at least a part of the local population of G. lineatum can produce 2 generations per year in the forest-steppe zone of Russia in particularly warm years. The environmental conditions and peculiarities of the biology of G. lineatum that can promote bivoltinism are discussed, and the seasonal cycle of the species is compared with those of other Heteroptera with facultative adult winter diapause from the forest-steppe zone.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Dmitry L. Musolin

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Graphosoma lineatum		Russia (Eur.)