Cathyalia okinawana Yamanaka, 2003, 1888

Ren, Yingdang & Yang, Linlin, 2017, Genus Cathyalia Ragonot, 1888 (Lepidoptera: Pyralidae), new record phycitine to China, Zoological Systematics 42 (4), pp. 514-520 : 515-516

Cathyalia okinawana Yamanaka, 2003 new record to China ( Figs 1–2 , 7 , 10 )

Cathyalia okinawana Yamanaka, 2003 : 113.

Adult ( Figs 1–2 ). Wingspan 15.5–20.5 mm. Vertex and frons yellowish white. Antenna with scape white, flagellum fuscous dark or mixed with grayish brown. Labial palpus ( Fig. 1a ) with basal segment white, terminal two segments about equal length, yellowish white on inner side, pale yellowish brown on outer side. Maxillary palpus yellowish white. Tegula and patagium pale yellowish brown; thorax blackish brown tined with ocherous brown. Forewing grayish brown mixed with rusty brown, rusty brown along venation; a broad white streak from basal 1/5 to apex along costa, about 1/3 width of forewing; antemedial line grayish white, narrowed, indistinct, from basal 1/5 of costa oblique outward to 2/5 of dorsum, forming a somewhat conspicuous grayish white spot on dorsum; discal spots obscure, white, confluent in crescentshape; postmedial line from near apex inwardly oblique to 1/4 of dorsum, represented by several white spots, conspicuous near dorsum; terminal line black; cilia blackish brown. Hindwing grayish white, grayish brown along termen and venation; cilia grayish brown. Legs white, with scattered brown scales, base of femur and tibia blackish brown, tarsus blackish brown. Abdomen brown fuscous, yellowish white along longitudinal middle of basal four segments.

Male genitalia ( Fig. 7 ). Uncus bell-shaped or tubular, with length longer than width, apex rounded. Apical process of gnathos very short, triangular. Transtilla a narrow arched band. Valva moderate in width, terminal margin oblique, slightly concaved; costa slightly broad at base, then gradually narrowed to apex, protruded at basal 1/4; clasper long-narrow triangular, from basal 1/5 of valva near costa obliquely extended to protuberance of costa, then stretched to end of valva along costa; sacculus clubbed, about 3/4 length of valva, apex blunt, shallowly separated from valva. Vinculum 1.3 times as long as wide. Juxta long-neck flask shaped, roundly inflated basally; lateral lobes fused and extremely extended to middle of uncus. Aedeagus slender, about 0.7 times length of valva; cornuti a sinuate sclerite in basal half and a row osmall thorns in distal half. Culcita two pairs.

Female genitalia ( Fig. 10 ). Ostium about 1/4 width of antrum. Antrum broad, rectangular, width twice longer than length, rounded at angles. Ductus bursae strongly sclerotized, with a narrow membranous ring near anterior 2/5, anterior 2/5 slightly broadened, posterior 3/5 narrowed. Corpus bursae elongate, oval, twice length of ductus bursae. Signa comprised of 6 to 12 flag-shaped sclerites located at sclerotized ovate plates, transversely arranged in posterior 2/5 of corpus bursae.

Material examined. Zhejiang, 3♂ ( NKUM) ; Fujian, 2♂ 5♀ ( NKUM) ; Hubei, 1♂ ( NKUM) ; Guangdong, 2♂ 4♀ ( NKUM) ; Guangxi, 18♂ 21♀ ( NKUM) ; Hainan, 29♂ 13♀ ( NKUM) , 35♂ 31♀ ( HAASM) ; Guizhou, 9♂ 17♀ ( NKUM) , 11♂ 18♀ ( HAASM) ; Yunnan, 48♂ 22♀ ( NKUM) , 19♂ 13♀ ( HAASM) .

Distribution. China (Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Yunnan, Zhejiang), Japan, Indonesia.

Variation. In some individuals, the uncus of the male genitalia is narrower, longer and tubular ( Fig. 7b ), the thorns in the aedeagus is fewer and stouter ( Figs 7 c–d). In the female genitalia, the amount of signa varies from 6 to 12 ( Figs 10 b–e), and in some individuals, the ductus bursae is slightly broadened in anterior 1/3, the narrow membranous ring is situated at anterior 1/3 of ductus bursae ( Fig. 10a ). As the interspecific differences in this genus are remarkable, the authors regard the above-mentioned variations as intraspecific variation.

Figures

Figures 1–6. Cathyalia spp., adults and venation. 1. C. okinawana, ♂ (a. head). 2. C. okinawana, venation, slide No. RYD20120098W. 3. C. fulvella, ♂ (a. head). 4. C. fulvella, venation, slide No. LJY10270. 5. C. pallicostella, ♂ (a. head). 6. C. pallicostella, venation, slide No. RYD20120149W.

Figures 7–9. Cathyalia spp., male genitalia. 7. C. okinawana, slide No. RYD04428 (a. Uncus, slide No. RYD04428; b. Uncus, slide No. LHX14086; c. Cornuti, slide No. RYD04428; d. Cornuti, slide No. LHX14086). 8. C. fulvella, slide No. LJY10259. 9. C. pallicostella, slide No. LJY10244. Scales bar=0.5mm.

Figures 10–12. Cathyalia spp., female genitalia. 10. C. okinawana, slide No. LHX14087 (a. Ductus bursae, side No. LHX14090; b. Signa, slide No. LJY11125; c. Signa, slide No. LHX14090; d. Signa, slide No. RYD04678; e, Signa, slide NoRYD04478). 11. C. fulvella, slide No. RYD04634. 12. C. pallicostella, slide No. RYD2014244. Scales bar=0.5mm.