(Figs. 48–50, 302, Map 9)

Diagnosis.— Glyphidocera adrogantiae, G. f a e c i s, and G. aediculae share an abdomen with sex scales between terga 2–3 and terga 3–4, a similar sized gnathos, an upturned costal furca of the valva, a wide cucullus of the valva, and a relatively small apical cornutus of the aedeagal vesica. However, G. f a e c i s differs from the latter by having a wider costal furca of the costal valva, and an outer margin of the valval cucullus that is straight.

Description.— Head: Vertex with grayish­brown scales tipped with yellowish brown; frontoclypeus grayish brown; outer surface of labial palpus grayish brown intermixed with few yellowish­brown scales, inner surface yellowish brown; scape grayish brown intermixed with few yellowish­brown scales, flagellum with alternating bands of yellowishbrown and brown scales; male 4 th flagellomere dorsally protuberant and curved, forming a narrow and deep concavity opposite slightly excavated flagellomeres 5–6; concavity nearly closed by a few setiform scales on apex of protuberance of 4 th flagellomere; proboscis grayish brown.

Thorax: Tegula and mesonotum grayish brown. Legs grayish brown intermixed with yellowish­brown scales to near apical margins of all segments and tarsomeres. Forewing (Fig. 302): Length 8.2 mm (n = 1), grayish brown intermixed with yellowish­brown scales mostly along costal and subcostal areas; cell with 2 large brown spots, 1 near base, 1 near distal end. Undersurface grayish brown intermixed with yellowish­brown scales along costal margin. Hindwing: Grayish brown.

Abdomen (Fig. 48): Male with 4 transverse, irregular rows of sex scales on intersegmental areas between terga 2–3 and terga 3–4. Sex scales between terga 2–3 appear slightly larger than sex scales between terga 3–4.

Male Genitalia (Figs. 49–50): Uncus elongate, broadly constricted above a wide base, slightly rounded apically, apex broadly rounded; gnathos sparsely setose, protuberant, moderately wide throughout length, apically upturned; tegumen slightly widened basally; dorsal strut of tegumen with arms convergent from a wide base, fusing near 1 / 3, gradually divergent from point of constriction to base of uncus; costa of valva nearly straight from a shallow depression beyond a slanted, basal digitate process to apical furca; furca acuminate, slightly upturned; sacculus twisted apically, constricting valva near midlength, widening distoventrally, forming an elongate and broadly rounded cucullus; cucullus membranous and setose, with outer margin nearly straight from costa to a broadly rounded apicoventral angle; vesica of aedeagus denticulate, bearing a moderately large, crescentshaped, apical cornutus; cornutus shortened near midlength, exposing a hollow, basal cavity.

Female Genitalia: Unknown.

Holotype, ɗ, “Est[ación] Cacao, 1000–1400 m, Lado SO Vol[cán] Cacao, P[arque] N[acional] G[uanacaste], Prov[incia] Guan[acaste], COSTA RICA, C. Chaves, Abr. 1991, L­N­ 323300, 375700 ”, “ INBio: COSTA RICA: CRI 000, 434715 ” [bar code label], “ INBio, ɗ Genitalia Slide by D. Adamski, No. 946 ” [yellow label].

Distribution (Map 9): Glyphidocera faecis is known from a single collecting site in north­western Costa Rica along the Cordillera de Guanacaste. Etymology: The specific epithet faecis is derived from the Latin “faex,” meaning dregs.