Edosa truncatula Yang, Wang & Li, sp. nov.
Creators: name: Yang, Linlin
name: Wang, Shuxia
name: Li, Houhun
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tineidae
Edosa
Edosa truncatula

description: Edosa truncatula Yang, Wang & Li, sp. nov.
(Figs 2, 16 a, 26, 57, 83)
Type material. Holotype ♂, CHINA: Bawan (24°56'N, 98°53'E), Baoshan, Yunnan Province, 1040 m, 8.viii.2007, leg. Dandan Zhang, genitalia slide No. YLL11165.
Paratypes: CHINA: 2 ♂, 1 ♀, same data as holotype except dated 8,9,10. viii.2007, genitalia slide No. YLL11168f.
Diagnosis. This new species is similar to E. caerulipennis (Erschoff, 1874) in the male genitalia, but can be distinguished by the yellowish-brown forewing, which is dark-brown in the latter species. Besides this external difference, the apex of the basal flange of the valva is rounded in E. truncatula sp. nov., but pointed in E. caerulipennis. The female genitalia of the two species are different in the eighth sternite and the colliculum: the eighth sternite with posteromedial section protruded inward and forming two subovate lobes in the new species, but not protruded inward in E. caerulipennis; the posterior colliculum has a single elongate process in the new species, but has a pair of shorter processes in E. caerulipennis.
Description. Adult (Fig. 26). Wingspan 22.0−23.0 mm. Head ochreous yellow. Antenna ochreous yellow, 0.8× length of forewing; scape without pecten; flagellum unicolorous. Labial palpus blackish brown, third segment mixed with yellowish brown. Thorax and tegula brown. Forewing index 0.26, yellowish brown, individual scales uniformly colored; retinaculum present; cilia brown. Hindwing coppery brown, shining purple; male with a single short, slender, evenly curved frenular bristle, female with two slender bristles, shorter one 0.3× length of longer one; cilia pale yellowish brown, with distinct, grayish brown cilia line. Fore leg blackish brown; mid femur and tibia blackish brown, tarsus and spurs yellowish brown; hind leg yellowish brown.
Pregenital abdomen. In male, first tergum sclerotized in middle of frame, about 1/2 length of tergum; coremata present in eighth segment; eighth sternite 0.25× as long as wide, without caudal process; eighth tergite trapezoidal, without caudal process. In female, first tergum sclerotized in middle of frame, about 1/3 length of tergum; seventh sternite and tergum sinuate on posterior margin.
Male genitalia (Fig. 57). Vinculum gently concave on anterior margin, slightly sinuate on posterior margin; medial process absent from ventrocaudal margin. Tegumen as deep as vinculum, concave on anterior margin, convex at middle on posterior margin. Uncus with shouldered base touching each other, forming a subovate membraneous section with tegumen; uncus lobe as long as depth of vinculum, slightly twisted at middle, basal half fused, membraneous and punctate on inner side, slightly sclerotized and smooth on outer side, distal half separated, smooth and heavily sclerotized on inner side, hairy and membraneous on outer side, apex truncate and melanized; sclerite absent between uncus lobes. Valva subtriangular, narrowed basally, widest at 1/4, then narrowing to a large horn-like distal process; costal margin gently curved, unmodified; basal flange large, hooked; bridging lobe absent between basal flange and valva; ventral margin archedly convex, forming distinct ventral lobe; basal margin with inconspicuous ‘secondary apodeme’ close to apodeme; inner surface unmodified. Juxta angled caudally, short, flat, trapezoidal, about 0.5× length of aedeagus. Aedeagus shorter than valva, narrowed toward apex, slightly bent ventrad, basal half with irregular vertical crimples ventrally, apex deeply concave at middle ventrally. Bulbus ejaculatorius about 6.0× length of aedeagus, subdistal section not hypertrophied, distal section strongly hypertrophied, semicircular.
Female genitalia (Fig. 83). Ovipositor length 3.0 mm. Eighth tergite subovate, anterior half membraneous, tapered; posterior half sclerotized, rough and hairy, with vertical crimple at middle, slightly concave at middle on posterior margin. Eighth sternite arcuately convex on anterior margin, deeply concave medially and with sparse setae on posterior margin; posterolateral section triangular, strongly sclerotized, microtrichiate; posteromedial section protruded dorsad and forming two subovate lobes, each lobe with an extrorsely sclerotized process posteriorly. Ostium situated below two lobes. Antrum cylindrical, 0.25× length of ductus bursae, almost membraneous dorsally, strongly sclerotized ventrally, melanized, sinuate and flared at joint of dorsal and ventral surfaces. Ductus bursae as long as corpus bursae, gradually broadening toward corpus bursae. Colliculum complex, posterior one funnel-shaped, protruded at anterior 1/3 of ductus bursae dorsally, giving rise to a single elongate, horn-like process that runs anteriorly to just within the second ring, with minute bifurcate tips; second ring apronshaped ventrally, produced to a tongue-shaped process dorsally; inception of ductus seminalis at middle of tongueshaped process of second ring. Corpus bursae ovate; signum absent.
Distribution. China (Yunnan).
Etymology. The specific name is derived from the Latin truncatulus, meaning truncate, referring to the uncus lobe truncate at apex.
description: Published as part of Yang, Linlin, Wang, Shuxia & Li, Houhun, 2014, A taxonomic revision of the genus Edosa Walker, 1886 from China (Lepidoptera, Tineidae, Perissomasticinae), pp. 1-102 in Zootaxa 3777 (1) on pages 19-20, DOI: 10.11646/zootaxa.3777.1.1, http://zenodo.org/record/249826