Descriptions of two new notodontid species from the relic Fagus forests in northeastern Taiwan (Lepidoptera, Notodontidae)
Wu, Shipher
Chang, Wei-Chun
Wang, Li-Hao
Huang, Chia-Lung
Hsu, Yu Feng
Zootaxa
2016
4066
3
291
300
Wu & Hsu
Wu & Hsu
[151,491,1813,1840]
Insecta
Notodontidae
Pheosiopsis
Animalia
Lepidoptera
4
295
Arthropoda
species
seni
sp. nov.
Typematerial. Holotype. Male, TAIWAN, Yilan County, Datong, Tsuifenghu, Fagus Forests, 1800m, 14-VIII- 2012, light trap, leg. C. L. Huang & L. H. Wang ( BMNH); Paratypes. 1 female, same collecting locality as the holotype, 1-VIII-2011, leg. L. H. Wang, Y. C. Lin & H. C. Chuang ( NTNU); 1 male, same collecting locality, 10- VII-2013, leg. S. Wu; 1 female, same collecting locality, 29-VIII-2014, leg. S. Wu & W. C. Chang ( TFRI); 2 females, Hsinchu County, Niauzeishan, 1500 m, L. H. Wang & J. Y. Liang ( NTNU).
Diagnosis.This species is closely related to P. albalienata Kishida & Kobayashi, 2005( Figs 11, 12, 27, 28, 21, 32), they can be distinguished by: the smaller wingspan size ( 35mmrather 38 mm); the less protruded forewing apex in male; the less incised posterio-medial margin of male 8th abdominal sternum; the wider valva with medial part of costal margin excurved; the less downcurved valval apex; the slender, longer anterior extension of aedeagus rather than stout and moderate in length; the larger distal triangular process of aedeagus.
Description.Wingspan 35 mm, forewing length 17 mmin males (n= 2); wingspan 40–41 mm, forewing length 20–21 mmin females (n= 4); Eye large; antenna fasciculate in male, filiform in female. Head, all segments of thorax fringed with grey scales. Forewing slightly broad, apex obtuse angled, outer margin excurved; ground coloration grey, tinged with dark grey; discocellular stigma as an oblique strip, black surrounding with pale yellow; marginal region tinged with small black spot between each vein; marginal scale greyish ochreous. Hindwing broad; ground coloration and marginal scales pale greyish ochreous. Abdomen pale ochreous. Male 8th abdominal sternum ( Fig. 26). Sternum broad, anterior margin slightly excurved medially; posterior margin incised medially, apex of two disto-lateral processes round. Male genitalia ( Fig. 25). Uncus stout, short beak-like, apex slightly pointing downward, obtuse; gnathos twice, nearly as long as uncus, excurved medially and gradually pointing upward, spex obtuse; tegument long, broad; vinculum broad, U-shaped in ventral view; juxta sclerotized, plate-like; valve, stout, medial part of costal margin dilated, distal part slightly pointing downward, apex obtuse. Aedeagus 1.5 X longer than valve, anterior half curved downward, gradually tapering; a stout triangular process arising from dorso-anterior part; vesica short, curved with distal part slightly sclerotized. FIGURES 21–24.Female genitalia of Syntypistisspecies. 21. S. taipingshanensisWu & Hsu sp. n., paratype (TFRI); 22. S. punctatella(Motschulsky, 1861)(NSMT); 23. S. melanaWu & Fang, 2003(NSMT); 24. S. abmelanaKobayashi & Kishida, 2005, paratype (NSMT). Photo by Shipher Wu. Female genitalia ( Fig. 29, 30). Ovipositor lobe membranous with short hair-like setae; posterior apophyses long and slender, anterior apophyses half length as posterior pair; ostium bursae wide; lamella antevaginalis and postvaginalis dilated, strongly sclerotized; ductus bursae wide, curved posteriorly and coiled anterior; corpus bursae ovate, large; signum nearly W-shaped, narrowed medially. Mature instar ( Fig. 36). Head round, light green; stemmatae brown. Body elongated, cylindrical, length about 45 mmwhen fully extended; ground coloration green; patterns of thorax and abdomen similar as follows: one pair of rather wide, light greenish white stripes arising longitudinally at dorsal part of body, two pairs of slender stripes locating longitudinally at dorso-lateral side of body, the upper stripes light yellow, the under ones light creamwhite; spiracles black centrally and white at margin; two stripes arising longitudinally along spiracles from prothorax to end of abdomen, the upper one pinkish red, the under one yellow; region between 7th to 9th abdominal segment slightly dilated, then tapering toward posterior margin. Bionomics.This species is distributed in the mid-altitude Fagusforestsof northeastern Taiwan, the adults occur in July and August and the larvae presumably of this species ( Fig. 36) were found from April to August (HSUM 09G5, 11D45, 14D100, 14H33, 15F20), suggesting this species may have more than one generation per year. The Japanese Fagusfeeding Pheosiopsis olivacea(Matsumura, 1920)is bivoltine ( Kobayashi, 2011). Notes.Our breeding Pheosiopsislarvae did not emerge successfully in the laboratory condition, the inferred immature-adult matching is based on the morphological similarity with both stages of P. olivacea( Schintlmeister, 2008; Anonymous, 2015).
Distribution.Endemic to Taiwan.
Etymology.The specific name of this species is dedicated to late Mr. Yong-Chang Sen (TFRI), who passed away in August, 2015. He devoted most of his life to exploring the immature stage of moths of Taiwan, especially notodontid taxa.