Abstract
Two new species of Hesperopenna Medvedev & Dang, 1981 are described from Singapore: H.temaseksp. nov. and H.bakerisp. nov. The specimens of both new species were collected by Charles Fuller Baker and found in the unidentified Galerucinae material deposited in the National Museum of Natural History, Smithsonian Institution, Washington, DC. Hesperopennatemaseksp. nov. is diagnosed by the black extreme elytral suture in the basal third, antennae longer than the body, the structure of the penis, and the last abdominal ventrite with two deep U-shaped incisions in females. Hesperopennabakerisp. nov. is diagnosed by the black tibia and first two tarsomeres, and the structure of the penis.
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