Chlamydastis dondavisi Phillips and Brown, 2021

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), Insecta Mundi 2021 (868), pp. 1-96 : 41

Chlamydastis dondavisi Phillips and Brown , new species

Figures 43 , 82 , 117

Holotype. Male, Costa Rica, Guanacaste, ACG, Sector Santa Maria, Crater Bosque Sendero Adentro , 1594 m, 28.iv.2017, S. Rios, 17-SRNP-102684, GenBank accession code MW435314 .

Paratypes (5♂, 4♀). See Appendix 1.

Diagnosis. Chlamydastis dondavisi is most similar to C. irenecanasae superficially and in the male genitalia. However, the two are easily distinguished by size alone. In C. dondavisi mean FW length is 9.0 mm and in Chlamydastis irenecanasae it is 7.0 mm. The male genitalia of C. dondavisi can be distinguished from those of C. irenecanasae by the distribution of the modified (arrowhead) setae, which are clustered in the basal 0.33 of the slender armlike process of the valva in C. irenecanasae and more evenly distributed throughout the basal 0.5 of the process in C. dondavisi . Also, the distal termination of the sacculus is longer and more hooklike in C. dondavisi .

Description. MALE ( Fig. 43 ). Head. Frons and vertex cream-ocherous; labial palpus slightly darker, fawn-cream, second segment brown in basal 0.4, distal tip of segment three yellow-ocherous; antenna with sensory setae ca. 1.5 times width of flagellomere. Thorax. Dorsum and tegula pale fawn brown, intermixed with white scales. FW length 9.0 mm; FW ground color pale fawn ocherous; a faint, ill-defined brown blotch along hind margin near middle, bordered basally by a slender brown line, bordered basally by a slender white line; faint pale brown line along termen, with a second similar parallel line slightly basad of first. HW gray-brown. Abdomen. Externally grayish brown, segments 6 and 7 with some white scales laterally; segment 4 with a lateral, membranous, conelike projection from pleuron (visible in dissections). Internally with slender, semi-sclerotized, elongate pleural processes of segments 6–7 extending into previous segment. Genitalia ( Fig. 82 ) with uncus short, stout, slightly narrowed subapically; gnathos membranous; valva subtriangular with long, slender, armlike process from base extending well beyond uncus, curving near middle, with a small, slender, curved thorn at apex; specialized (arrowhead) setae along inner margin of armlike process somewhat evenly distributed in basal 0.5; sacculus robust with free, broadly hook-shaped distal part extending behind valva; juxta with lateral process somewhat thumblike, rounded distally, not as long as plate of juxta; phallus pistol-shaped, vesica with long, slender, sclerotized process with three small distal teeth.

FEMALE. Head and Thorax. Essentially as described for male, except sensory setae of antenna short, sparse; FW length 9.5 mm. Abdomen. Externally gray-brown throughout; lacking lobelike process of segment 4 and internal pleural extensions of segment 6 and 7. Genitalia ( Fig. 117 ) with papillae anales parallel-sided, rounded posteriorly; sterigma semi-sclerotized with linear patch of long, straight setae at posterior margin of segment 8; ductus bursae long, narrow, nearly uniform in width, slightly broadened near junction with corpus bursae, which is at anterior end of corpus bursae; corpus bursae almond-shaped, signum large, wing-shaped, with patches of dense, short spines.

DNA barcodes. The 18 barcode sequences of C. dondavisi form a uniform BIN (BOLD:AAA1205) with identical sequence data, with a distance of 4.68% to its nearest neighbor, C. irenecanasae .

Distribution. Chlamydastis dondavisi has been collected in light traps from ca. 120 m elevation in Parque Nacional Manuel Antonio to 1600 m in rain and cloud forest in ACG.

Biology. Nothing is known of the early stages.

Etymology. The specific epithet is a patronym for Don Davis, honoring his many lepidopterological contributions to the national biodiversity inventory of Costa Rica.

Cystiodes Species Group

The Cystiodes Species Group is composed of C. manuelzumbadoi , C. noramartinae , and C. vitorbeckeri from Costa Rica; C. cystiodes ( Meyrick, 1916) , C. inspectrix ( Meyrick, 1916) , C. metacymba ( Meyrick, 1916) , and C. metacystis (Meyrick, 1918) from French Guiana, all illustrated by Clarke (1955: 184, 191, 195, and 195, respectively); and C. illita (Meyrick, 1926) from Perú, illustrated by Clarke (1955: 187). The species share similar male genitalia with an uncus that is either reduced to a short triangular nub or entirely absent; the gnathos extremely reduced or absent; the valva usually parallel-sided with a characteristic fanlike arrangement of the specialized male setae originating near the middle of the apex of the valva; and a small brush of setae at the distal ends of the lateral processes of the juxta. The forewing pattern typically includes a large crescent-shaped blotch in the terminal and subterminal region.

Figures

Figures 42–50. Adults of Chlamydastis from Costa Rica. 42) C. irenecanasae, USNMENT01480480. 43) C. dondavisi, USNMENT01480468. 44) C. manuelzumbadoi, female, paratype, INBIOCRI001956652. 45) C. noramartinae, male, paratype, INBIOCRI000598917. 46) C. vitorbeckeri, male, holotype, 11-SRNP-43642. 47) C. ronaldzunigai, holotype, 11-SRNP-20864. 48) C. munifigueresae, 12-SRNP-41409. 49) C. ungulifera, male, INBI- OCRI002540131. 50) C. willsflowersi, male, paratype, INB0003901728.

Figures 78–82. Male genitalia (phallus detached) of Chlamydastis from Costa Rica – Deflexa and Disticha Species Groups. 78) C. johnnoyesi, paratype, 11-SRNP-55090. 79) C. luisdiegogomezi, paratype, INB00306661. 80) C. paulthiaucourti, paratype, 09-SRNP-100416. 81) C. irenecanasae, paratype, Turrialba. 82) C. dondavisi, paratype, 16-SRNP-101329.

Figures 111–117. Female genitalia of Chlamydastis. 111) C. orion, 05-SRNP-6105. 112) C. montywoodi, paratype, 07-SRNP-100462. 113) C. johnnoyesi, paratype, 10-SRNP-115646. 114) C. luisdiegogomezi, paratype, INBIOCRI00306701. 115) C. paulthiaucourti, paratype, INBIOCRI003154784. 116) C. irenecanasae, paratype, Turrialba, USNM slide 153,777.117) C. dondavisi, paratype, 10-SRNP-107941.