European corn borer model guidelines

 

by Ric Bessin, Extension Entomologist
University of Kentucky College of Agriculture

Description: Img0054.jpg

The adult ECB is about 20 to 26 mm in length and is recognized by wavy pattern on the wings.

 

 

 

European corn borer life stages based on degree day measurements

First Generation

 

Percentage

Pupa

Adult

Flight

Egg

Larval Stages

 

1st

2nd

3rd

4th

5th

 

Initiation

250

420

550

610

750

970

1140

1290

1420

 

25%

340

540

690

790

920

1070

1220

1360

1490

 

50%

390

600

740

850

960

1110

1250

1390

1520

 

75%

450

650

790

900

1000

1140

1280

1420

1550

 

Peak

560

760

900

990

1090

1210

1350

1490

1620

 

 Second Generation

Percentage

Pupa

Adult

Flight

Egg

Larval Stages

1st

2nd

3rd

4th

5th

Initiation

1440

1620

1660

1740

1860

1970

2140

2250

2370

25%

1580

1730

1880

2020

2160

2280

2420

2540

2800

50%

1620

1780

1950

2110

2250

2370

2500

2630

2930

75%

1660

1830

2030

2190

2330

2440

2580

2700

3060

Peak

1730

1940

2190

2360

2490

2590

2720

2840

3500