Author Archives: Sean Malone

Black light trap report for Sep. 28, 2017

Average nightly black light trap catches of corn earworm moths this week were: Southampton=0.3; Prince George (Templeton)=6; Prince George (Disputanta)=4; Hanover=2; Suffolk=26. Here is the data table: BLT_28_Sep_2017

Most traps are being stowed now. We greatly appreciate the reports this season from Watson Lawrence (Chesapeake); Mike Parrish and Angela Duncan (Dinwiddie); Laura Maxey-Nay (Hanover); Scott Reiter (Prince George); Mary Beahm (Warsaw); LIvvy Preisser (Southampton); and Sally Taylor and her entomology team (Suffolk). We also want to thank the growers who hosted the traps on their farms.

Insect update for Sep. 7, 2017

Most reporting black light trap stations this week had decreased corn earworm moth captures (except for Chesapeake remaining constant). Nightly averages were Chesapeake = 11; Southampton = 1; Suffolk = 8; and Warsaw = 4 moths. Here is the data table:  BLT_7_Sep_2017

No brown marmorated stink bugs were caught this week in the black light traps.

Insect update for Aug. 31, 2017

This week, corn earworm (bollworm) moth captures in the black light trap were down at most locations (steady at Chesapeake and Prince George-Templeton), perhaps partly due to the rainy weather, but some “down” numbers are still pretty high (Suffolk, for example). The table is here: BLT_31_Aug_2017

We had no reports of any brown marmorated stink bugs captured in the black light traps this week.

We have vial-tested close to 1,000 corn earworm moths in Dr. Taylor’s pyrethroid resistance monitoring program in 2017, with an average of 38% survival.

Insect update for Aug. 17, 2017

Corn earworm moth captures in the black light traps ranged from 2 to 45 moths per night; brown marmorated stink bug catches ranged from zero to 2.6 per night. Here are the data tables: BLT_17_Aug_2017

In our corn earworm (bollworm) vial tests, we are averaging 39% moth survival, with 832 moths tested to date.

Insect update for Aug. 10, 2017

Black light trap captures of corn earworm/bollworm ranged from 5 to 78 moths per night this week. Brown marmorated stink bug captures ranged from zero to 2 per night. Here are the data tables: BLT_10_Aug_2017

Resistance monitoring of corn earworm/bollworm shows that this season in Suffolk, an average of 39% of moths survived the 24-hour exposure period to the pyrethroid, cypermethrin.

Insect update for Aug. 3, 2017

Black light trap catches of corn earworm (aka bollworm) moths increased at most reporting stations, ranging from 5 to 58 per night this week. The pheromone traps at Suffolk also caught about 20 moths per night. Mike Arrington reported that he was seeing cotton fields (Bt and conventional) very close to egg threshold for bollworm in Suffolk and Southampton Counties.

Brown marmorated stink bugs ranged from zero to 1.7 per night. The data tables for corn earworm and BMSB are here: BLT_3_Aug_2017

Corn earworm moth survival in the cypermethrin vial tests was 36% for the week, and 40% for the seasonal average (to date).