Chlamydastis bobandersoni 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 : 18-19

Chlamydastis bobandersoni Phillips and Brown , new species

Figures 15 , 62 , 100

Holotype. Female, Costa Rica, Guanacaste, ACG, Sector Pitilla, 510 m, larva feeding on Pouteria campechiana (Sapotaceae) , em: 25.xii.2009, 09-SRNP-73957, GenBank accession code HM885197 ( USNM).

Paratypes (7♂, 3♀). See Appendix 1.

Diagnosis. Superficially, C. bobandersoni lacks the dark curved line through the middle of the discal cell of the FW characteristic of the Curviliniella Species Group. In the male genitalia of C. bobandersoni the uncus is shorter and slenderer than in congeners; there is a conspicuously convex outer edge of the valva between the sacculus and the apex of the valva; the outer edge of the valva bears a region of long fine hairs; the termination of the sacculus

is more distally attenuate and pointed; and the phallus has a small, rodlike distal sclerite. The female genitalia of C. bobandersoni differ from those of other species in the group by lacking a well-developed signum.

Description. MALE ( Fig. 15 ). Head. Frons white; vertex white with brownish scales closer to collar; labial palpus with first segment dark brown laterally, second segment brown laterally in basal ca. 0.66, with irregular brown ring near tip, base of third segment with a narrow brown ring; antenna with sensory setae ca. 1.5 times width of flagellomere. Thorax. Dorsum and tegula beige with scattered brown scales. FW length 8.8–9.2 mm; FW ground color white with scattered brown scales, three dark gray blotches along FW costa at ca. 0.25, 0.50, and 0.75 distance from base to apex; an irregular dark grey band parallel to termen originating at hind margin about 0.8 distance from base to tornus, continuing through a narrow line terminating in costal blotch at 0.75 distance from base to apex. HW light brown. Abdomen. Dorsum pale brown, venter paler. Genitalia ( Fig. 62 ) with uncus short, slender; anterior margin at intersection of lateral halves of tegumen narrow trough-shaped; gnathos absent; dorsal part of valva subovate, comparatively short, evenly attenuate apically, with dense patch of specialized setae along middle of costa; valva with conspicuous convexity along ventral margin of dorsal part and irregularly triangular basal part representing sacculus; latter ca. 0.5 length of valva, with long, dense, moderately developed haripencil; termination of sacculus distally attenuate, pointed; phallus with small rodlike distal sclerite.

FEMALE. Head and Thorax. Essentially as described for male, except sensory setae of antenna short, sparse; FW length 10.0– 10.1 mm. Abdomen. Genitalia ( Fig. 100) with papillae anales moderately uniform in width throughout, weakly incurved distally, slightly diverging posteriorly; sterigma a broad, lightly sclerotized band; ductus bursae short, broad, undifferentiated from corpus bursae, with posterior 0.33 sclerotized; corpus bursae elongate-ovate, lacking signum.

DNA barcodes. The 14 sequences of C. bobandersoni form a uniform BIN (BOLD:AAA1114) with identical barcodes, and a distance of 8.77% to the nearest neighbor, C. orion .

Distribution. Chlamydastis bobandersoni has been found only in Costa Rica at low and middle elevations (400– 570 m) in the rainforest and rain forest-dry forest lowland intergrade in ACG.

Biology. Chlamydastis bobandersoni has been reared from larva feeding on Pouteria campechiana (Kunth) Baehni (Sapotaceae) (n = 3) ( Table 1).

Etymology. Chlamydastis bobandersoni is a patronym for Bob Anderson in recognition of his taxonomic contributions to the national biodiversity inventory of Costa Rica.

Mendoron Species Group

The Mendoron Species Group is closely related to the Curviliniella Species Group and is composed of five species, two from Costa Rica, C. carlosviquezi and C. christerhanssoni ; one from French Guiana, C. mendoron (Busck, 1911) ; one from Peru, C. batrachopis (Meyrick, 1913) , illustrated by Clarke (1955: 179); and one from Brazil (Amazonas), C. smodicopa (Meyrick, 1915) , illustrated by Clarke (1955: 203). The five species share similar male genitalia with a slightly longer, slenderer uncus than that of the Curviliniella Species Group; a slender, rounded gnathos (absent in the Curviliniella Species Group); a two-part valva that includes a large triangular sacculus (basal part of valva) that bears a dense hairpencil, and a more narrow-elongate dorsal part with a truncate, angled, or rounded apex; extremely broad, subrectangular or rounded lateral processes of the juxta; and a phallus with a large, irregular apical extension that bears a sparsely dentate edge. The specialized (arrowhead) setae of the male genitalia originate from the distal termination of the costa of the valva. The female genitalia have a broadly triangular, sclerotized flap over the ostium; a broad ductus bursae undifferentiated from the membranous corpus bursae (i.e., C. christerhanssoni ) or sclerotized in the posterior half (i.e., C. carlosviquezi ); and a small signum, extremely reduced in C. carlosviquezi , and a small sclerotized patch in C. christerhanssoni . The latter two species are characterized by a whitish forewing with a somewhat checkered pattern of dark gray with a prominent dark blotch near the end of the discal cell.

We recognize two new species from Costa Rica based on differences in the male genitalia with those of C. mendoron , the latter of which has a rounded apex and narrow-elongate distal portion of the valva, rounded lateral processes of the juxta, and a shorter phallus.

Figures

Figures 9–15. Adults of Chlamydastis from Costa Rica – Curviliniella Species Group. 9) C. anniapicadoae, holotype, male, INB0003545350. 10) C. antonioazofeifai, holotype, male, INB0003317783. 11) C. mignondavisae, holotype female, USNMENT 01480465. 12) C. marianofigueresi, paratype female, 16-SRNP-105464. 13) C. colleenhitchcockae, holotype male, 97-SRNP-1651. 14) C. bernardoespinozai, holotype, male, 09-SRNP-107481. 15) C. bobandersoni, paratype, male, INBIOCRI001138251.

Figures 57–64. Male genitalia (phallus detached) of Chlamydastis from Costa Rica – Curviliniella and Mendoron SpeciesGroups.57) C.anniapicadoae,paratype,INBIOCRI0004263586.58) C.antonioazofeifai,paratype,09-SRNP- 103461. 59) C. marianofigueresi, holotype, 16-SRNP-105662 (USNM 153,780) (phallus INBIOCRI002183316). 60) C. colleenhitchcockae, holotype, 97-SRNP-1651. 61) C. bernardoespinozai, paratype, 10-SRNP-104626. 62) C. bobandersoni, paratype, 09-SRNP-111006. 63) C. carlosviquezi, paratype, INBIOCRI000616538. 64) C. christerhanssoni, paratype, INBIOCRI000788466.