ANNOUNCEMENT, Identification
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Dear community of people interested in entomology
I’m currently working in Vietnam and have collected an insect that I could only identify to the family Attelabidae. I’m seeking help to determine the genus or species.
I’ve attached photos and collection data. Any suggestions or help would be greatly appreciated.
Short discribing:
The adult is a weevil with a broadly oval body, bright orange to yellow, approximately 4 mm in length, and is sparsely covered with short yellow-brown setae. The head is elongated, measuring nearly one-third of the body length. The elytra are black, each bearing a large, distinct yellow spot (approximately 1.3×1 mm). The antennae are black, long, and composed of 11 segments, with the last three segments distinctly enlarged.
The larva is apodous, slightly C-shaped, and has a clearly segmented body. It is pale yellow in early instars, gradually turning bright to deep yellow in later stages. The head is small and dark brown, equipped with chewing mandibles. The body surface is smooth and lacks setae.
The pupa is exarate, pale to bright yellow, measuring approximately 3 mm in length, and is sparsely covered with short setae. The head and pronotum are prominent. Antennae, compound eyes, and legs are clearly visible and closely appressed to the body. The abdomen is distinctly segmented.
The adult damage on young leaves, mature leaves, and young shoots of H. aptera. Its main damage behavior involves leaf-chewing and cutting the leaves. Feeding typically occurs on the underside of the leaves, creating irregular, oval-shaped patches that leave only the upper epidermis intact. This remaining epidermal layer eventually dries out and tears, resulting in characteristic holes in the leaf. In addition to feeding, adults can sever the leaves, leaving only a small portion near the petiole. Oviposition occurs directly on young leaves, usually along the main vein on the underside. Alternatively, females may lay eggs at cut margins of the leaf before the blade is completely severed and falls to the ground. The fallen leaf subsequently decomposes and serves as an organic substrate for larval development.
Thank you!
I’m currently working in Vietnam and have collected an insect that I could only identify to the family Attelabidae. I’m seeking help to determine the genus or species.
I’ve attached photos and collection data. Any suggestions or help would be greatly appreciated.
Short discribing:
The adult is a weevil with a broadly oval body, bright orange to yellow, approximately 4 mm in length, and is sparsely covered with short yellow-brown setae. The head is elongated, measuring nearly one-third of the body length. The elytra are black, each bearing a large, distinct yellow spot (approximately 1.3×1 mm). The antennae are black, long, and composed of 11 segments, with the last three segments distinctly enlarged.
The larva is apodous, slightly C-shaped, and has a clearly segmented body. It is pale yellow in early instars, gradually turning bright to deep yellow in later stages. The head is small and dark brown, equipped with chewing mandibles. The body surface is smooth and lacks setae.
The pupa is exarate, pale to bright yellow, measuring approximately 3 mm in length, and is sparsely covered with short setae. The head and pronotum are prominent. Antennae, compound eyes, and legs are clearly visible and closely appressed to the body. The abdomen is distinctly segmented.
The adult damage on young leaves, mature leaves, and young shoots of H. aptera. Its main damage behavior involves leaf-chewing and cutting the leaves. Feeding typically occurs on the underside of the leaves, creating irregular, oval-shaped patches that leave only the upper epidermis intact. This remaining epidermal layer eventually dries out and tears, resulting in characteristic holes in the leaf. In addition to feeding, adults can sever the leaves, leaving only a small portion near the petiole. Oviposition occurs directly on young leaves, usually along the main vein on the underside. Alternatively, females may lay eggs at cut margins of the leaf before the blade is completely severed and falls to the ground. The fallen leaf subsequently decomposes and serves as an organic substrate for larval development.
Thank you!
Country
Vietnam
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