Rice Stink Bug

Oebalus pugnax, the Rice Stink Bug, belongs to the tribe Carpocorini. We've already encountered several other members of this tribe, including the Dusky Stink Bug, the Black Stink Bug, and a species with a white-bordered scutellum (Mormidea lugens).

In the adult phase, the Rice Stink Bug can be distinguished by the prominent spines projecting forward on the shoulders. It feeds on grasses, particularly rice, but also on wheat and corn, and can cause significant damage. Nymphs go through 5 instars before reaching maturity. I found this specimen on Daylily.

References:
http://bugguide.net/node/view/15343
http://www.lsuagcenter.com/en/crops_livestock/crops/rice/Insects/Rice+Stink+Bug+Oebalus+pugnax.htm
https://insects.tamu.edu/fieldguide/aimg79.html
http://www.arkansas-crops.com/2011/04/15/rice-and-brown-stink-bugs-in-wheat-what%E2%80%99s-up-with-that/
http://www.ncbi.nlm.nih.gov/pubmed/18330138 (determination of spatial pattern in rice and development of visual sampling methods and population sampling plans)
http://www.ncbi.nlm.nih.gov/pubmed/18767732 (attractiveness of stages of rice panicle development)
http://www.ncbi.nlm.nih.gov/pubmed/17849881 (most susceptible stage of rice panicle development)
http://repository.tamu.edu/bitstream/handle/1969.1/ETD-TAMU-1928/VARGAS-DISSERTATION.pdf?sequence=1 (damage assessment and sampling)