Chlamydastis Meyrick of Costa Rica: barcodes, biology, and descriptions of 36 new species (Lepidoptera: Depressariidae) Author Phillips-Rodríguez, Eugenie Dry Forest Conservation Fund, Sector Santa Rosa, Área de Conservación Guanacaste, phillipsrodriguez @ gmail. com urn: lsid: zoobank. org: author: E 798045 C-A 872 - 4 F 6 A- 82 F 4 - 5 AC 78 A 04 DDA 3 Author Brown, John W. National Museum of Natural History, Smithsonian Institution Washington, DC, 20013 - 7012, USA tortricidae. jwb @ gmail. com urn: lsid: zoobank. org: author: 3 C 52 FC 4 E-E 988 - 4 AD 6 - B 0 D 1 - 9 A 5 CA 74 CB 24 C Author Hallwachs, Winnie Department of Biology, University of Pennsylvania Philadelphia, PA 19104, USA Author Janzen, Daniel H. Department of Biology, University of Pennsylvania Philadelphia, PA 19104, USA text Insecta Mundi 2021 2021-05-28 2021 868 1 96 journal article 10.5281/zenodo.5042023 1942-1354 5042023 1738B3CE-22AC-409B-9B04-DAD91322B278 Chlamydastis christhompsoni Phillips and Brown , new species Figures 19 , 66 , 104 , 128 Holotype . Male , Costa Rica , Guanacaste , ACG, Sector Del Oro , Tangelo , 410 m , 28.i.2009 , R. Moraga , 09-SRNP- 20126, GenBank accession code GU649223 ( USNM ). Paratypes ( 22♂ , 18♀ ). See Appendix 1. Diagnosis. Chlamydastis christhompsoni is superficially most similar to C. phytoptera . The two can be distinguished by the position of the white spot in the FW, which is more crescent-shaped and basal to the dark brown blotch in C. christhompsoni rather than more rounded and apical to the brown blotch in C. phytoptera . In the male genitalia, the shape of the distal portion of the valva is truncate in C. christhompsoni and round in C. phytoptera . Chlamydastis christhompsoni is also very similar to C . scutellata ( Meyrick, 1916 ) from French Guiana , but the two can be distinguished by differences in the shape of the projections from the dorsum of abdominal segment 8, and a more rounded, wider valva in the male genitalia of C. christhompsoni . Description. MALE ( Fig. 19 ). Head . Frons whitish; vertex brownish, collar brownish; labial palpus pale brown with scattered white scales; antenna with sensory setae ca. 1.5 times width of flagellomere. Thorax . Anterior band adjacent to collar and base of tegula brownish, greenish posteriorly. FW length 10.1–12.0 mm; FW dark brown with mossy green overscaling, especially dense along hind margin; a distinct, dark brown, circular blotch near middle of termen with a smaller white to cream crescent-shaped spot adjacent to its inner (basal) margin, sometimes extending along apical and terminal margin of dark brown blotch; hind margin densely overscaled with green. HW brown. Abdomen . Externally pale brown; a pair of elongate-triangular projections from last segment (visible on descaled abdomen) ( Fig. 66a ). Genitalia ( Fig. 66 ) with uncus long, slender; gnathos with an angulate dilation near middle; valva subovate, with somewhat square apex, weakly veined, with dense cluster of specialized setae from costa subapically; sacculus short, elongate-triangular, with a free distal end, confined to basal 0.3 of valva; lateral lobes of juxta long; phallus weakly curved with long sclerite in vesica. FEMALE. Head and Thorax . Essentially as described for male, except sensory setae of antenna short, sparse; FW length 13.1–15.1 mm . Abdomen . Genitalia ( Fig. 104 ) with papillae anales diverging and rounded distally, together weakly chordate; ductus bursae slender, 10–12 times as long as width at middle, slightly longer than corpus bursae; corpus bursae ovoid with an irregularly ovoid, spiny signum. DNA barcodes. The 69 barcode sequences of C . christhompsoni form a uniform BIN (BOLD:AAA11184) with an average distance of 0.11% among sequences, and a distance of 9.22% to its nearest neighbor, C. phytoptera . Distribution. Chlamydastis christhompsoni has been collected in ACG from 130 to 1450 m in cloud forest, rain forest, and rain forest-dry rain forest lowland intergrade. Biology. Chlamydastis christhompsoni has been reared from larvae feeding on Pouteria reticulata (Engl.) Eyma (n = 124) and Pouteria campechiana (n = 1) (both Sapotaceae ) ( Table 1 ). Immature stages ( Fig. 128 ). Head pale orange; prothorax pale green; T2–T3 with large, irregular, reddish blotch dorsally, T2 with irregular yellow band posterior to reddish blotch; A1–A7 with red shield covering most of segments, with irregular yellow band posterior to red blotch on A1, A4, and A5; A8 pale green with a few red dots and a central yellow spot; A9 and A10 pale green. Parasitoids . Hymenoptera : Braconidae : Microgastrinae : Hypomicrogaster Whitfield 21 (n = 4, e.g., DHJPAR 0039649), Hypomicrogaster Janzen 27 (n = 3, e.g., DHJPAR0049864), Hypomicrogaster Janzen 01 (e.g., DHJPAR 0057747); Diptera : Tachinidae : Exoristinae : Hyphantrophaga Wood 15 (e.g., DHJPAR0050501). Etymology. The specific epithet christhompsoni is a patronym for the late Christian Thompson, a noted U.S. dipterist, in recognition of his taxonomic contributions to the national biodiversity inventory of Costa Rica .