Tethysimyia bonairensis sp. nov. Figs 8–10 Material: holotype ♁, BONAIRE: Washington Slagbaai, Playa Chikitu, 12–19.xii.2022, 12.2791°N, 68.3485°W, leg. O. Vorst & V. J. Kalkman, Malaise trap, BON 2022-2023.8, Museum Leiden (RMNH), critical point dried and card pointed. Paratypes: 2♁♁, same data, dissected and preserved in glycerine tube; 55♁♁, 124♀♀, same data, preserved in alcohol; 11♁♁ and 10♀♀, same data, critical point dried and card pointed; 6♁♁ and 8♀♀, same data, critical point dried and card pointed (MJE coll.); 1♁, 1♀, Rincón, BOPEC, 19–27.xii.2022, 12.2264°N, 68.3814°W, leg. V. J. Kalkman, Malaise trap, BON2022-2033.9, Museum Leiden (RMNH), preserved in alcohol. (BOPEC refers to the old oil terminal on the north coast of Bonaire). Diagnosis: an entirely yellow species in both sexes with few external characters to distinguish the females from those of congeners found in adjacent territories. The male postabdomen, although similar to that of T. litophila sp. nov. and T. nigrifacies sp. nov., differs from both in having a narrower and longer aedeagus and in the shape of the epandrium and pregonite. The postgonite and cerci are absent. Description Male. Head: entirely yellow, higher than long; frons about 3 times as broad as eye and produced anterodorsally beyond eye margin; at vertex about 0.7 width of head; frons narrowed anteriorly, at level of antennae about 0.8 width that at level of anterior ocellus; ocelli translucent; eye oval, lying oblique; gena narrow in front, deeper behind, in profile, at middle about equal to height of short diameter of eye, and with several scattered minute pale setulae; occiput in profile broadly visible behind eye except at posterior pole of eye; postocular setulae in one row; mouth parts all yellow; 3 vibrissal setulae well developed; face short, poorly sclerotized and depressed; median carina between antennae narrow, not quite reaching mouth margin; antenna only a little recessed in shallow fossa; yellow with short seta dorsally on pedicel and postpedicel with ...