Threelined Fig Tree Borer

Cerambycidae, Lamiinae, Monochamini,

Neoptychod.es trilineatus.

Adults of this medium-sized longhorn (BL 22-29 mm females, 14-21 mm males) (fig. 9.14b) are commonly seen resting on the leaves and feeding on the bark of Ficus and other tropical trees in the genera Alnus, Morus, Chlorophora, and of mango, which are the larval hosts as well (Horton 1917). They are clearly recognized by their rather long antennae (held out laterally from the body and about 2.5 times the length of same) and gray and orange-splotched elytra, usually with three irregular, whitish, linear markings that run the length of the body. There are also two lateral fine lines running from the antennal bases and one irregular broader median line extending from the base of the prothorax along the length of the wing covers.

The many members of the closely related genus Taeniotes (fig. 9.14d) are similar in appearance and have comparable habits. They are distinguished by the presence of sharp spines on the sides of the prothorax, which Neoptychodes lacks. Both genera are sometimes orchard pests; the larvae infest the branches and boles of host trees. Damage from these is sometimes identifiable by the frass ejection holes found at regular intervals along the galleries.

Reference

Horton, J. R. 1917. Three-lined fig-tree borer. J. Agric. Res. 11: 371-382, pi. 35-37.

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