Cuban Laurel Thrips
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Adult- Cuban laurel thrips are large thrips (2.6 to 3.6 mm) that are dark yellowish brown to black.
Egg- The eggs is cylindrical with rounded ends, smooth, and translucent white.
Larvae- The first stage larva is a tiny, translucent white insect. In top view the first stage larva is
almost oval. Second stage larvae are also translucent white but are similar to the adult in size and
shape. Both instars have red eyes. The abdominal segments taper from the thorax. In top view the
second stage larvae are shaped like an elongate diamond. The posterior tube becomes dark in older
larvae and is held pointing up.
Prepupa and Pupa- Prepupae are similar to second stage larvae except that the wing buds are
externally visible. Pupae have longer wing buds and the antennae are folded back over the head.
Fig. 163: Cuban Laurel Thrips,
Gynaikothrips ficorum (Marchal), Phlaeothripidae, THYSANOPTERA
A, Adult. B, Egg. C-D, Larvae. E, Pupa. F, Damage to ornamental fig.
Distribution- The Cuban laurel thrips is a pantropical species that occurs wherever Ficus retusa is
planted. It has been recorded outdoors in California, Texas, Hawaii, and Florida.
Host Plant- Cuban laurel thrips feed on Indian laurel, weeping fig, India rubber plant, other figs,
and various shrubs and herbs. In the floricultural industry, weeping fig is the host most often
Damage- This pest feeds on the tender, pale green leaves causing sunken, reddish to purplish spots
along the midrib. Immature thrips cause the leaves to curl inward or fold into a pocket in which the
thrips continue to develop and in which they lay eggs. Heavily infested leaves eventually become
tough and brown or yellow. They eventually drop from the plant prematurely. Infested trees will
not be killed, but the ornamental value of the plant is reduced markedly. Like the flower thrips, the
Cuban laurel thrips also bites people.
Life History- Eggs are laid in great numbers inside the surface of the curled leaf. All stages of
development can be found at any time within the pocket galls. Development from egg to
egg-laying females takes about 30 days. Adult Cuban laurel thrips are active fliers and migrate
rapidly during hot weather.
Because the Cuban laurel thrips only attacks the tender, new foliage on small plants, it should be
possible to prune out the new growth and eliminate the thrips population. Consequently there is no
suitable foliage for feeding and oviposition and the infestation should die out before new growth
Two anthocorid bugs, Macrotracheliella laevis Champion and Cardiastethus rugicollis
Champion have been reported to be predators of the Cuban laurel thrips in Puerto Rico. Another
anthocorid bug, Montandoniola moraguesi (Puton), was introduced from the Philippines in
Hawaii to control this thrips. The insidious flower bug is a common predator of the Cuban laurel
thrips in Florida. For specific insecticides and rates, consult the current Cooperative Extension
Service publications on ornamental plant pests.