Description of two outstanding Hypotrabala from the Central Congolian lowland forests (Lepidoptera, Lasiocampidae, Lasiocampinae, Selenepherini)

Two new Hypotrabala Holland, 1893 species, Hypotrabala michaeli sp. n. and H. oliviae sp. n., are described from the Central Congolian lowland forests of the Democratic Republic of the Congo. Hypotrabala michaeli sp. n. is compared with other dark colored Hypotrabala species: Hypotrabala leopoldi Weber et al., 2024; Hypotrabala benjamini Weber et al., 2024; and Hypotrabala carnegiei Tams, 1929; while H. oliviae sp. n. is compared with closely related Hypotrabala retorta Takano & László, 2024; Hypotrabala fontainei Tams, 1953; Hypotrabala guttata (Aurivillius, 1915); Hypotrabala magnimacula Takano & László, 2024; and Hypotrabala aurantiaca Takano & László, 2024. Adult males and their genitalia are illustrated.