BACKGROUND We describe 25 new species in the genus Telothyria van der Wulp, 1890 from Area de Conservación Guanacaste (ACG) in northwestern Costa Rica. All species herein described were reared from an ongoing inventory of wild-caught caterpillars spanning two families (Lepidoptera: Crambidae, and Tortricidae). Our study provides a concise description of each new species using morphology, life history, molecular data, and photographic documentation; a redescription of the genus, and its type species as well as a revised key to species of Telothyria occurring in the Mesoamerican region. We also suggest seven new synonymies resulting in 11 new combinations. NEW INFORMATION The following 25 new species of Telothyria are described: T. aidani sp. n., T. alexanderi sp. n., T. auranticrus sp. n., T. auriolus sp. n., T. bicuspidata sp. n., T. carolinacanoae sp. n., T. clavata sp. n., T. cristata sp. n., T. diniamartinezae sp. n., T. duniagarciae sp. n., T. duvalierbricenoi sp. n., T. eldaarayae sp. n., T. erythropyga sp. n., T. fimbriata sp. n., T. fulgida sp. n., T. gloriashihezarae sp. n., T. grisea sp. n., T. harryramirezi sp. n., T. incisa sp. n., T. manuelpereirai sp. n., T. obscura sp. n., T. omissa sp. n., T. osvaldoespinozai sp. n., T. peltata sp. n., and T. ricardocaleroi sp. n.The following are proposed by Fleming & Wood as new generic synonyms of Telothyria: Comatacta Coquillett Syn. n., Floradalia Thompson Syn. n., Ptilomyia Curran Syn. n., Ptilomyiopsis Townsend Syn. n., Ptilomyoides Curran Syn. n., Euptilomyia Syn. n., Eutelothyria Townsend Syn. n.The following new combinations are proposed as a result of the new synonymies: Telothyria bequaerti (Curran, 1925) Comb. n., Telothyria cruenta (Giglio-Tos, 1893) Comb. n., Telothyria frontalis (Townsend, 1939) Comb. n., Telothyria insularis (Curran, 1927) Comb. n., Telothyria itaquaquecetubae (Townsend, 1931) Comb. n., Telothyria major (Thompson, 1963) Comb. n., Telothyria micropalpus (Curran, 1925) Comb. n., Telothyria minor (Thompson, 1963) Comb. n., Telothyria nautlana (Townsend, 1908) Comb. n., Telothyria plumata (Curran, 1925) Comb. n., Telothyria trinitatis (Thompson, 1963) Comb. n., Telothyria variegata (Fabricius, 1805) Comb. n. Musca tricincta Fabricius is synonymized under Telothyria variegata Fabricius, Syn. n. Telothyria schineri Fleming & Wood nom. n. is proposed as a replacement name for Miltogramma brevipennis Schiner.Additionally we provide redescriptions of two previously named species: the type species Telothyria cupreiventris (van der Wulp) due to its being the type species, and Telothyria relicta (van der Wulp) due to its having been reared as an outcome of the inventory.

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修订 Telothyria van der Wulp（双翅目：Tachinidae）和来自哥斯达黎加西北部瓜纳卡斯特地区的 25 个新物种，是中美洲物种的关键。

背景 我们描述了 1890 年来自哥斯达黎加西北部地区 de Conservación Guanacaste (ACG) 的 Telothyria van der Wulp 属的 25 个新物种。本文描述的所有物种都是从跨越两个科（鳞翅目：蟹科和龟科）的野生捕获的毛虫的持续清单中饲养的。我们的研究使用形态学、生活史、分子数据和照片记录对每个新物种进行了简明的描述；该属的重新描述，其类型物种以及中美洲地区发生的Telothyria物种的修订密钥。我们还建议了 7 个新的同义词，从而产生了 11 个新的组合。新信息 描述了以下 25 个 Telothyria 新物种： T.aidani sp。n., T. alexanderi sp. n., T. auranticrus sp. n.，T. auriolus sp。n.，T. bicuspidata sp。n.，T. carolinacanoae sp. n.，T. clavata sp。n.，T. cristata sp。n.，T. diniamartinezae sp。n.，T. duniagarciae sp。n.，T. duvalierbricenoi sp。n.，T. eldaarayae sp。n.，T. erythropyga sp。n.，T. fimbriata sp。n.，T. fulgida sp。n.，T. gloriashihezarae sp。n.，T. grisea sp。n.，T. harryramirezi sp。n., T. incisa sp. n., T. manuelpereirai sp. n.，T. obscura sp。n.，T. omissa sp。n.，T. osvaldoespinozai sp。n.，T. peltata sp。n.，和 T. ricardocaleroi sp。n.Fleming & Wood 提出以下作为 Telothyria 的新通用同义词： Comatacta Coquillett Syn。n., Floradalia Thompson Syn. n., Ptilomyia Curran Syn. n.，Ptilomyiopsis Townsend Syn。n., Ptilomyoides Curran Syn. n., Euptilomyia Syn. n.，Eutelothyria Townsend Syn。n.由于新的同义词，提出了以下新组合：Telothyria bequaerti (Curran, 1925) Comb。n., Telothyria cruenta (Giglio-Tos, 1893) 梳。n., Telothyria frontalis (Townsend, 1939) Comb. n., Telothyria insularis (Curran, 1927) Comb. n., Telothyria itaquaquecetubae (Townsend, 1931) Comb. n., Telothyria major (Thompson, 1963) Comb. n., Telothyria micropalpus (Curran, 1925) Comb. n., Telothyria minor (Thompson, 1963) 梳子。n., Telothyria nautlana (Townsend, 1908) 梳子。n., Telothyria plumata (Curran, 1925) Comb. n., Telothyria trinitatis (Thompson, 1963) Comb. n.，Telothyria variegata (Fabricius, 1805) 梳子。n. Musca tricincta Fabricius 是 Telothyria variegata Fabricius 的同义词，Syn。n. Telothyria schineri Fleming & Wood nom. n. 被提议作为 Miltogramma brevipennis Schiner 的替代名称。此外，我们提供了对两个先前命名的物种的重新描述：