Chlamydastis juanmatai Phillips and Brown 2021, new species
Creators: name: Phillips-Rodríguez, Eugenie
name: Brown, John W.
name: Hallwachs, Winnie
name: Janzen, Daniel H.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Oecophoridae
Chlamydastis
Chlamydastis juanmatai

description: Chlamydastis juanmatai Phillips and Brown, new species   
Figures 27, 72  
 Holotype. Male, Costa Rica, Puntarenas, Area de Conservación Osa, Los Charcos, 1 km E de Banegas, 50 m, 06.x.2010, E. Phillips, INB0004269414, GenBank accession code MH827054 (MNCR-A).   
 Paratypes (2♂). See Appendix 1.   
 Diagnosis. Males of C. juanmatai are nearly indistinguishable from those of C. powelli and C. gracewoodae, superficially and in genital morphology; however, the three can be separated by barcodes and subtle features of the male genitalia. Chlamydastis powelli is distinguished by its slightly longer uncus (Fig. 64); and C. juanmatai and C. gracewoodae can be distinguished from each other by the shape of the dorso-posterior margin of the free basal process of the valva (Fig. 65, 66). Also, in C. juanmatai the attenuate portion of the phallobase is slightly smaller than in the other two species.   
 Description. MALE (Fig. 27). Head. Vertex and frons white, collar white intermixed with brown scales; labial palpus with first segment dark brown, second segment light brown in basal half, third segment with two narrow light brown rings, one at base and one near tip; antenna with length of sensory setae ca. equal to width of flagellomere, an appressed patch of long, fine, whitish scales along surface opposite of sensory setae, originating from pedicel, extending ca. 0.5 length of antenna. Thorax. Prothorax with a narrow brown band adjacent to collar and continuing over base of tegula; meso- and metathorax white. FW length 7.7–7.9 mm; FW white in basal 0.33, with broad, brown, median fascia extending from mid-costa to middle of hind margin, with gently curved inner margin, beige distad of median fascia, becoming darker near middle of termen; small darker patches of raised scales near center of outer margin of median fascia, and another patch closer to hind margin. HW dark gray-brown. Abdomen. Dorsum gray with whitish scales on first and second segment. Genitalia (Fig. 72) with uncus long, slender; gnathos arms slender, ca. 0.8 length of uncus, flattened at distal junction of arms; valva with large subtriangular expansion near middle of lower (ventral) margin, rounded in distal 0.3, with dense patch of specialized setae near mid-costa; sacculus broadest at base, attenuate distally, ending in a pointed tip; basal portion (sacculus) and subtriangular mesial expansion bearing long hairpencils; lateral processes of juxta short, digitate from rounded lobes; phallus stout, with short distal pointed process relatively straight, phallobase with curved venter opposite of ductus ejaculatoris; cornutus small, U-shaped, dentate distally.   
FEMALE. Unknown.  
 DNA barcodes. The three barcodes of C. juanmatai (BOLD:ABU8622) are identical, with a distance of 3.37% to its nearest neighbor, C. powelli.   
 Distribution. Chlamydastis juanmatai has been collected in the southern Pacific region of Costa Rica at 50 m elevation.   
 Biology. The immature stages and food plants remain unknown.   
 Etymology. Chlamydastis juanmatai is named in honor of Juan Mata in recognition of his technical support of the national biodiversity inventory of Costa Rica.
description: Published as part of Phillips-Rodríguez, Eugenie, Brown, John W., Hallwachs, Winnie & Janzen, Daniel H., 2021, Chlamydastis Meyrick of Costa Rica: barcodes, biology, and descriptions of 36 new species (Lepidoptera: Depressariidae), pp. 1-96 in Insecta Mundi 2021 (868) on pages 30-31, DOI: 10.5281/zenodo.5042023