Sinochrostia sichuanensis Fibiger, 2010

FIBIGER, MICHAEL, 2010, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae, Zootaxa 2583 (1), pp. 1-119 : 90

Sinochrostia sichuanensis Fibiger , new species

( Plate 11 , figure 3, 4; female genit. plate 26, figure 4)

Material examined. Holotype. Female, China, Prov. Sichuan, Mt. Emeishan , 23.v.1979, leg. Wu, Chunsheng, genit. prep. 3249 M. Fibiger, coll. IZCAS.

Paratype. 1 female, China, Prov. Hunan, Suoxiyu , 17.x.1988, leg. Wu, Chunsheng, genit. prep. 3250 M. Fibiger, coll. IZCAS .

Diagnosis. Imago (external). Wingspan: 13–14 mm.

Head, thorax, and ground colour forewing, incuding fringes: light brown.

Forewing: long and narrow, dark brown costally in basal, medial, and subterminal areas (apo.).

Reniform stigma: beige, ovoid, outlined by ground colour (apo.).

Crosslines: absent, except terminal line marked by dense black interneural spots; other lines only indicated by costal spots.

Hindwing: light grey, discal spot indistinct or absent.

Underside: forewing dark grey; hindwing grey, with indistinct discal spot.

Abdomen: grey.

Female genitalia. Posterior apophyses: slightly shorter than ovipositor (apo.).

8 th abdominal segment: short, ringlike; connected by membrane to 7 th segment.

Anterior apophyses: tiny, commalike (apo.).

Ostium: positioned anteriorly in 8 th segment.

Antrum: narrow, conelike, slightly shorter on ventral side (apo.).

Ductus bursae: membranous, very narrow, three times longer than corpus bursae (apo.).

Corpus bursae: globular, with cross shaped signum.

Differential diagnosis. S. sichuanensis differs from species in sister-genus Mimachrostia in narrower wings, short posterior apophyses, tiny anterior apophyses, long ductus bursae, and shape of antrum.

Distribution. S. sichuanensis is known only from SE China.

Figures

PLATE 11. Figures 1–8. Duplex, Sinochrostia, and Mimachrostia species, adults. 1, 2, D. cockingi, males holotype and paratype, Australia, New South Wales, 11 km SW Narrabri, and Australia, Queensland, 3 km NE Ravensbourne; 3, 4, Sinochrostia sichuanensis, females holotype and paratype, China, Prov. Sichuan, Mt. Emeishan, and China, Prov. Hunan, Suoxiyu; 5, Mimachrostia fasciata minimus, male holotype, Japan, Tsushima Isl., Kamiagata; 6, M. f. fasciata Sugi, 1982, Japan, Shikoku, Ehime; 7, M. novofasciata, male holotype, China, Prov. Hainan, Yinggeling.