Iza Walker, 1865
Iza nubecula ( Guenée, 1858 )
Iza botydana Walker, 1865
Iza
Iza perlula ( Guenée, 1858 )
Siculodes nubecula Guenée, 1858
Taxonomic revision of the monotypic genera of Siculodini (Lepidoptera, Thyridoidea, Thyrididae, Siculodinae)
Queiroz-Santos, Luziany
Casagrande, Mirna Martins
Mielke, Olaf Hermann Hendrik
Zootaxa
2021
2021-01-28
4920
2
235
253
92CLR
Walker, 1865
Walker
1865
[151,359,1734,1761]
Insecta
Thyrididae
Iza
Animalia
Lepidoptera
3
238
Arthropoda
genus
( Figs 2, 6, 10, 16)
Iza Walker, 1865. Lepidopterous insects in the Collection of the British, 31 (70): 521; species included: Iza nubecula( Guenée, 1858), Iza botydana Walker, 1865, Iza? terminalis Walker, 1865, Iza perlula( Guenée, 1858).— Guenée, 1877. Annales de la Société Entomologique de France, (5)7: 301.—Druce, 1895, inGodman & Salvin. Biologia Centrali-Americana: zoology, botany and archaeology 2: 186; typespecies designation Siculodes nubecula Guenée, 1858.— Whalley, 1964. Annals and Magazine of Natural History, (13) 7(74): 121.— Whalley & Heppner, 1995, Thyridoidea, inBecker et al.Checklist: Part 2, Hyblaeoidea–Pyraloidea–Tortricoidea, inHeppner (ed.). Atlas of Neotropical Lepidoptera 3: 32.
Typespecies: Siculodes nubecula Guenée, 1858by subsequent designation ( Guenée 1877) (“Cette espèce deviendra par la suite le typed’un genre ( IzaWalk.) que je n’ai pas cru devoir adopter dans l’état imparfait de la science”). This fact was later confirmed by Druce (1895). Taxonomic history. Izawas described to include the following species: I. nubecula, I. botydana, I.? terminalisand I. perlula, but without designation of the typespecies. Currently, the only species in the genus is the typespecies. Iza botydanawas transferred by Whalley & Heppner (1995)to Pseudendromis Köhler, 1924as I.? terminalisand I. perlulawas transferred by Hampson (1897)to Rhodoneura Guenée, 1858.
Diagnosis. Izais distinguished from the remaining genera of Siculodiniby: (i) wings dark brown ground color with irregular beige patches and bands dorsal and ventrally ( Fig. 2); (ii) abdomen dark brown on the dorsal face and beige on the ventral face; (iii) valva triangular; (iv) valva with spiniform process; (v) fultura inferior U-shaped; (vi) aedeagus narrowing distally with spines; (vii) lamella antevaginalis sclerotized and (viii) papillae anales straight.
Redescription. Forewing: length—males 16.6 mm (n = 11), females 25.4 mm (n = 5); slightly concave tornus; retinaculum absent. Hindwing: length—males 12.6 mm (n = 11), females 15.8 mm (n = 5); apex right angled and tornus concave; male with sand-colored patch on the costal margin ventrally; frenulum absent. Male genitalia ( Fig. 6): tegumen with proximal and distal margins convex in dorsal view; saccus oval in lateral view; uncus triangular in dorsal view, with thin and short setae; gnathos reduced and distally sclerotized, projected disto-ventrally; valva triangular, costa slightly concave, spiniform process in the proximal part, clasper projected dorsally, apex rounded and ventral margin convex, slightly concave at the posterior end of sacculus; fultura inferior U-shaped, broad and thickly sclerotized arms with blunt apex and short setae; aedeagus cylindrical, proximal half thicker, narrowing distally with numerous spines, opening for the vesica extending along the entire posterior half, vesica without cornutus. Female genitalia ( Fig. 10): tergum VIII rectangular in lateral view, lamella antevaginalis sclerotized, ostium membranous; posterior apophyses longer than the anterior apophyses; bursa copulatrix with sclerotized wide ductus at anterior 1/4, second 1/4 membranous and narrow, and posterior half membranous and slightly thicker, corpus bursae membranous, without signum; papillae anales straight, taller than long and covered with short and thin setae.