Forages: European Skipper (Thymelicus lineola)

---

Pub 812: Field Crop Protection Guide > Chapter 3: Forages > European Skipper

---

Field Crop Protection Guide 2011-2012, Order 2011-2012 publication

Table of Contents

1. Description
2. Integrated Pest Management Options
• Bacillus thuringiensis (Bt) – Dipel 2X DF, Thuricide HPC
3. Related links...

Description

The skipper is a sporadic pest of timothy, both in hay and seed production. The adult is a pumpkin-orange butterfly with a 2.5-cm wing spread that skips about hay fields in midsummer. Mature larvae are light green, approximately 2.5 cm in length and have brown heads with two light bands. Younger larvae have black heads that eventually turn brown. Larvae can usually be found within rolled leaves where they feed.

---

Integrated Pest Management Options

If 6-8 larvae in a 30 cm x 30 cm area are found and larvae are still small, treat the field or the infested area. See OMAFRA Publication 811, Agronomy Guide for Field Crops, for scouting procedures.

Active ingredient	Bacillus thuringiensis (Bt)
Trade name	Dipel 2X DF
Rate per hectare (product)	140-275 g per ha
Rate per acre (product)	60-115 g per ac
PHI*	0
Comments	For use in timothy only.

 

Active ingredient	Bacillus thuringiensis (Bt)
Trade name	Thuricide HPC
Rate per hectare (product)	2.25 L per ha
Rate per acre (product)	900 mL per ac
PHI*	0
Comments	For use in timothy and other forage grasses.

 

---

Related links...

• Agronomy Guide for Field Crops - Publication 811
  • Forages: European Skipper
• Insects
• Forages