Thiotricha deltaloba Lee & Li 2024, sp. nov.
Creators: name: Lee, Ga-Eun
name: Li, Houhun
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Gelechiidae
Thiotricha
Thiotricha deltaloba

description: Thiotricha deltaloba sp. nov.   
(Figs 10H, 24S, 35C)  
 Type material. Holotype ♂, CHINA, Hainan Province, Wuzhishan Nature Reserves (18.90°N, 109.67°E), 738 m, 3.iii.2016, leg. Qingyun Wang, Suran Li and Shengnan Zhao, genitalia slide no. LGE18258.   
 Diagnosis. The forewing of T. deltaloba is broadly scattered with carmine-pink scales and the dark brown streak is running from middle of dorsum to near the apical spot. The strongly curved anellus lobe of male genitalia is somewhat similar to that of T. rufimarginata, but it is triangular medially in T. deltaloba whereas it is round in the latter species. The aedeagus with a narrow dorsal extension is also characteristic for the new species.   
 Description. Adult (Fig. 10H). Wingspan 10.0 mm. Head cream, posterior margin strongly mixed with ochre and slightly tinged with pink. Labial palpus cream, segment III tipped black. Antenna with scape cream, flagellum mixed fuscous and ochre except base cream. Thorax denuded. Tegula cream, tinged with pink. Forewing ground color whitish ochre, strongly mixed with fuscous at base; costa with anterior edge black in basal 1/3; apical spot very small, bordered inwardly by grey scales; markings dark fuscous: a narrow, oblique streak arising from near middle of dorsum, extending outwardly across wing, then running longitudinally from basal 1/2 to 3/4 below costa, between this streak and base of wing broadly scattered with pink scales; a narrow costal streak from distal 1/3 of wing, confluent with former streak; beyond this, another narrow streak running along costa from distal 1/4 to apex; an indistinct spot near tornus, slightly tinged with pink scales; fringe on apex light ochre tipped fuscous, on termen pink tipped metallic silver, on dorsum mixed light ochre and grey. Hindwing and fringe dark grey. Legs cream; fore femur, tibia and tarsus black on outer surface, fore tibia strongly mixed with pink; mid tibia with a black streak in basal 1/2 and near apex, respectively, tinged with pink scales medially; hind tibia with an oblique black streak near apex; mid and hind tarsi with an oblique black streak at middle of tarsomere I and base of tarsomeres II and III, respectively.   
 Male sternum VIII (Fig. 24S). Slightly shorter than 1/3 length of abdomen, with lateral margins broadly concave, bifurcate from posterior 1/5; inner margin V-shaped between two tines, pointed at apex.   
 Male genitalia (Fig. 35C). Uncus subrectangular. Gnathos hook slender, moderately long. Tegumen approximately 3.5 times as long as uncus. Valva gradually broadening from base to apex, with right valva slightly concave at middle of ventral margin; apex spatulate, with a short projection on costa. Anellus lobe approximately 1/4 length of valva, strongly curved inward; basal 1/2 very slender, abruptly broadened after middle as a triangular plate, then strongly constricted apically; apical bristle absent. Juxta with a hummock-like process in basal 1/2 of inner margin. Vinculum trapezoidal. Saccus short triangle. Aedeagus with basal 1/3 dilated, cylindrical to 2/3, apex narrowed; a narrow, long process arising from 2/3 of dorsal surface, curved slightly upward, its apex slightly expanded and truncate.   
Female unknown.  
 Distribution. China (Hainan).   
 Etymology. The species name is derived from Latin deltatus (triangular) and lobus (lobe), referring to the medially triangular anellus lobe of the male genitalia.   
 Remarks. The type is somewhat denuded, but the identity of the new species is confirmed by the uniqueness of the male genitalia.
description: Published as part of Lee, Ga-Eun & Li, Houhun, 2024, A taxonomic review of Thiotricha Meyrick, 1886 (Lepidoptera, Gelechiidae, Thiotrichinae) from China, with descriptions of 84 new species, pp. 1-222 in Zootaxa 5449 (1) on page 63, DOI: 10.11646/zootaxa.5449.1.1, http://zenodo.org/record/11233121