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 paulthiaucourti Phillips and Brown , new species Figures 40, 41 , 80 , 115 Holotype . Male , Costa Rica , Guanacaste , ACG, Sector Pitilla , Estación Pitilla , 675 m , 14.xi.2012 , S. Rios and H. Cambronero , 12-SRNP-105722, GenBank accession code MH827050 ( USNM ). Paratypes ( 8♂ , 4♀ ). See Appendix 1. Diagnosis. Chlamydastis paulthiaucourti is most similar to C. johnnoyesi . It can be distinguished by features of the male genitalia: C. paulthiaucourti has a short uncus, a smaller patch of specialized setae from the valva, and smaller lateral processes of the juxta. Description. MALE ( Fig. 40 ). Head . Frons cream; vertex gray; labial palpus gray; antenna with length of sensory setae ca. equal to width of flagellomere. Thorax . Dorsum and tegula cream to gray. FW length 7.1–8.0 mm; FW two-toned, mostly brown in basal 0.75, cream with irregular brown marks in middle, apical region mostly brown with a dark crescent-shaped patch in termen, costa deflexed in apical 0.25; an oblique irregular line ca. 0.75 distance from base to apex extending from below costa toward hind margin. HW dark brown. Abdomen . Externally brown. Genitalia ( Fig. 80 ) with uncus short; gnathos with a conspicuous upturned mesal process at junction of arms; armlike process of valva short beyond bend, with small patch of specialized setae; lateral processes of juxta short; phallus relatively slender, curved near middle, irregularly sclerotized, lacking conspicuous cornuti. FEMALE ( Fig. 41 ). Head . Essentially as described for male, except sensory setae of antenna short, sparse. Thorax . Essentially as described for male, except FW length 8.8–9.0 mm; FW costa evenly curved (not deflexed apically), apico-terminal blotch larger than in male, overall color darker than in male. Abdomen . Genitalia ( Fig. 115 ) with papillae anales rounded and diverging posteriorly; ductus bursae slender, gradually widening to corpus bursae, lacking distinct junction; corpus bursae elongate-ovate with large mustache-shaped signum, attenuate at each end and narrowed in middle, spiny throughout with fewer spines medially. DNA barcodes. The 25 barcode sequences of C. paulthiaucourti form a uniform BIN (BOLD:AAA0230) with an average distance of 0.07% among them and a distance of 8.03% to its nearest neighbor, C. johnnoyesi . Distribution. This species has been collected in Costa Rica from 400 m to 1100 m . In ACG it has been collected in rain forest and dry forest-rain forest lowland intergrade. Biology. Chlamydastis paulthiaucourti has been reared from larvae feeding on Pouteria cainito L. (n = 3) ( Sapotaceae ). Etymology. Chlamydastis paulthiaucourti is named in honor of Paul Thiaucourt in recognition of his taxonomic contributions to the national biodiversity inventory of Costa Rica . Disticha Species Group The Disticha Species Group is composed of C. disticha ( Meyrick, 1916 ) from French Guiana (illustrated by Clarke, 1955: 183 ) and two species from Costa Rica – C. irenecanasae and C. dondavisi . The most conspicuous autapomorphy in the male genitalia is the unusual, long, slender, armlike process that originates from the base of the costa of the valva and extends well beyond the uncus, curves near its middle, and bears a small, slender thorn at its apex. The specialized (arrowhead) setae lay along the inner margin of the latter process. The female genitalia are characterized by an extremely long, slender ductus bursae that intersects the corpus bursae at a rounded angle, so that much of the corpus is posterior to the junction with the ductus bursae.