The family Lecithoceridae (Lepidoptera, Gelechioidea) from Bioko Island (Equatorial Guinea), with descriptions of five new species Author Park, Kyu-Tek Bioresource and Environmental Center, Incheon National University, Incheon, 22012 Korea. Author Karisch, Timm 0000-0003-1281-7512 Museum für Naturkunde und Vorgeschichte, Askanische Strasse 32, 06842 Dessau-Rosslau, Germany. timm. karisch @ naturkunde. dessau. de, https: // orcid. org / 0000 - 0003 - 1281 - 7512 text Zootaxa 2021 2021-07-01 4995 3 581 593 journal article 10.11646/zootaxa.4995.3.12 1175-5326 5057115 ACC86498-899C-48B6-924A-5EEEBAD85A08 Thubdora angustiala Park & Karisch , sp. nov. LSID: urn:lsid:zoobank.org:act: CF4C608C-AC71-498C-A801-F326853779EC ( Figs. 5A–C ) Type specimen. – Holotype : ♀ , Equatorial Guinea , Island of Bioko (former Fernando Póo), Gran Caldera Volcanica de Luba u Ose , outer NNE slope about 4 km SSW Ruiché , 5 km S of Luba , higher altitude primary rain forest, 1,200 m , 3°22’30” N 8°32’30” E , 18.viii.1994 , at light, leg. T . Karisch , gen. slide no. 3827/ Karisch , deposited in coll. Karisch in SDEI . Diagnosis. This new species is similar to the preceding new species, T. biocoica , but it can be easily distinguished from the latter by the following characters: the forewing more elongated, with a small, yellowish-white costal patch located before 3/4 of costa, and the termen very oblique, whereas in T. biocoica the costal patch is located nearer to apex and the termen not oblique, nearly straight. FIGURE 5. Thubdora angustiala Park & Karisch , sp. nov . : A, adult, holotype; B, dorsal surface of head and thorax; C, female genitalia, slide no, 3827/Karisch. Scale bar for the genitalia with aedeagus: 1.0 mm. Description . Female ( Figs. 5A, B ). Forewing length 8.5 mm . Head : Dark brown dorsally, with yellowish-white erect scales laterally. Antenna slightly shorter than forewing; scape elongated; flagellum slightly ciliate-fasciculate, yellowish white with dark-brown annulations. Labial palpus with very short 1 st segment; 2 nd segment thickened, more or less flattened, curved upward, yellowish brown on outer surface, dark brown dorsally and ventrally; 3 rd segment strongly upturned, slender, as long as second segment, yellowish white, speckled with dark-brown scales. Thorax : Tegula and thorax dark brown dorsally. Median legs with dark-brown femur; tibia dark brown, paler towards apex, with a pair of spurs terminally, the inner one 2.5 times longer than the outer one. Hind leg with darkbrown femur; tibia with brownish rough scales above, with pale-yellow scales apically; spurs at middle and near end, inner one more than 2 times longer than the outer one. Forewing nearly parallel-sided; ground color dark brown with a small, triangular yellowish-white costal patch at about basal 3/4; no transverse lines or streaks presented; apex rounded; termen oblique and slightly sinuate, fringes concolorous with ground color, with a narrow yellowishwhite basal line along margin. Hind wing brownish gray; fringes concolorous with ground color, with narrow yellowish-white basal line. Abdomen : Dark brown, with pale yellowish brown terminal segment. Spinose zones with very strong spines on dorsal surface. Female genitalia ( Figs. 5C ): Abdominal sternite VIII deeply emarginated medially, into U-shape. Apophyses anteriores about half the length of apophyses posteriores. Ostium bursae gently concave.Antrum heavily sclerotized, quadrate, sharply produced latero-caudally, slightly concave on lateral margin, connecting membranous swollen posterior part of ductus bursae. Ductus bursae broad in posterior 2/5, gradually broader distally; narrowed in anterior 3/5, nearly parallel-sided, once coiled anteriorly. Corpus bursae ovate, about half the length of ductus bursae; signum with hood-shaped plates divided by a broad, transverse groove medially. Male unknown. Distribution. Known from the type locality on Bioko only. Etymology. The species name is derived from the Latin, angusti (= narrow) and ala (= wing), referring to the narrowed forewing.