ez-Migration Trap II

Model:BT1013

Ordered Quantity	1-3	4-7	8+
Discount	-0%	-5%	-10%
Price per Unit	$574.00 USD	$545.30 USD	$516.60 USD

Dimensions: L180 x W180 x H180 cm

Net Weight: 3,000 grams

Main Materials: Knitted Polyester Netting

Frame: Shock-corded Aluminum Poles

Mesh Size: White - 108 x 32 | 470 µm Aperture．Black - 96 x 26 | 680 µm Aperture

Quick Guide - click to download bt1013_ez-migration-trap-ii_manual - 308KB

Dual-headed design for flight direction studies

The ez-Migration trap—a two-headed Malaise trap—is a modular field-sampling tool that intercepts insects on both sides of a vertical barrier and directs them into separate collection bottles. This design keeps opposing-direction samples separate for within-deployment analysis of orientation effects and supports studies of seasonal migration and short-range dispersal.

Detailed Description

Classical Malaise traps often exhibit directional asymmetry, with collection heads filling unevenly depending on sun position, wind direction, or insect flight path. By placing a head at each end, the ez-Migration trap separates catches from opposing directions, making orientation effects explicit so they can be quantified and compared within the same deployment. This separation improves the interpretability of insect movement patterns.

Assembly mirrors that of the ez-Malaise trap: shock-corded poles connect in minutes, clips attach the fabric, and stability requires a minimum of two guy ropes. Its portability makes it suitable for both long-term monitoring and quick surveys.

The dual inverted Y-shaped collection heads are molded from solid polycarbonate (PC) for durability and high transparency, providing unobstructed light cues. Ventilation ports (closed by default) permit optional airflow; some entomologists report that increased airflow can improve catch efficiency. A removable moth excluder (1 × 1 cm grid) limits entry of larger insects such as Lepidoptera, helping reduce wing-scale contamination in samples. At each end, rest the head on the support frame so the pole—not the fabric—carries the load.

Functional Advantages

Orientation effects made explicit: Catches from opposing directions are kept separate, enabling within-deployment comparison of variation attributable to sun position, wind direction, and insect flight path.
Collection heads (2 units): Solid polycarbonate (PC) with high transparency; ventilation ports (closed by default) for optional airflow; removable 1 × 1 cm moth excluder to discourage larger insects (e.g., Lepidoptera) that can contaminate samples.
Modular system: Allows individual components (collection heads, fabric body, and shock-corded poles) to be replaced without swapping the entire trap, reducing downtime and extending service life.
Quick assembly: Shock-corded poles and clip attachments enable rapid field setup.
Portable structure: Nearly freestanding; requires a minimum of two guy ropes for stability in open landscapes.

Field Notes

Placement: Position the central barrier across movement corridors (trails, forest edges, riparian strips) and orient roughly perpendicular to expected insect flight paths. Avoid tight vegetation that blocks airflow.
Collection head support (dual-head): Rest each inverted Y-shaped head on the end support frame so the pole carries the load, not the fabric. Do not suspend a head from fabric or let it hang; this can alter roof geometry, reduce capture efficiency, and stress seams. Fasten with the supplied ties and keep both intakes vertical to maintain alignment. Recheck seating after re-tensioning guy ropes or when either collection bottle is full.
Directional metadata: Label the two heads consistently (e.g., A/B or compass bearings) and record orientation at setup to support directional comparisons.
Sun and wind: Note the sun position and wind direction at deployment and at each servicing.
Stability: The trap is nearly freestanding; use at least two guy ropes in open landscapes, adding more in windy conditions. Stake lines to maintain roof geometry.
Servicing: Service collection bottles on a regular schedule (e.g., weekly), adjusting for temperature and catch volume. Re-tension lines after strong winds or a heavy catch to maintain panel shape.
Preservative & labels: Use a preservative suited to your workflow (e.g., ethanol for morphology/DNA). Labels should include trap ID, head ID, date/time, preservative, and orientation notes.
Multiple traps: Space units 50–150 m apart to reduce spatial dependence. Record effort in trap-days and note covariates such as weather, vegetation structure, and edge distance.
Relocation: For short-term surveys, reposition as needed to sample across habitat edges or along movement axes, logging coordinates and orientations at each move.

Disclaimer: Field Notes provide practical guidance and examples. Actual procedures should be adapted to site conditions, study objectives, and institutional protocols. Users are responsible for safe deployment and compliance with local regulations.