Liriomyza huidobrensis
Abbreviation: N/A
Pea leafminer is present in: Asia, Central America, Europe, and South America. North American populations are located in the province of Ontario. Countries of particular concern due to widespread establishment include: Chile, Cyprus, Greece, Israel, the Philippines, Spain, and Taiwan.
Pea leafminer is a pest of the following plant families: Asteraceae, Brassicaceae, Chenopodiaceae, Cucurbitaceae, Leguminosae, Liliaceae, and Solanaceae.
Though hosts are not limited to the following, pea leafminer poses a risk of significant economic loss for the commodities listed below.
Evidence of pea leafminer damage includes: punctures from feeding and egg-laying that appear as white stipples primarily on the upper surface of the leaf and can allow bacterial and fungal diseases to enter the plant. The major damage to the plant, however, is caused by the larva as it feeds and tunnels through the leaf, resulting in blisters, blotchy mines, or serpentine tunneling. Frass (feces) may be visible within mines. With heavy feeding damage, photosynthesis is reduced, and leaves may dry and drop, resulting in decreased plant quality and yield. The most serious infestations usually occur late in the season and can affect large areas of the leaf.
CBP Agriculture Specialists, please refer to manuals for general inspection guidelines. When performing inspections, look for tunnels through the leaf, resulting in blisters, blotchy mines, or serpentine tunneling and frass.
Adult leafminers are small yellow- and black-colored flies, at most only several millimeters long. When the adult females feed or lay eggs, they bore a hole using their toothed ovipositor, usually in the upper side of the leaf.
Egg spots are oval and hard to distinguish from feeding spots.
Larvae are transparent white/gray.
