Iragoides elongata Hering, 1931

Wu, Jun, Solovyev, Alexey V. & Han, Hui-Lin, 2022, Two new species and two unrecorded species of Limacodidae (Lepidoptera, Zygaenoidea) from Xizang, China, ZooKeys 1100, pp. 71-85 : 71

Iragoides elongata Hering, 1931

Figs 3 , 4 , 5 , 14 , 15 , 16

Iragoides elongata Hering, 1931, in Seitz, Gross-Schmett. Erde 10: 671 (key), 709, fig. 90 f. Type locality: "Hkamkawn, 400 Fuß (Ober-Burma)". Holotype: ♂ (BMNH).

Specimens examined.

1 ♂, China, Prov. Yunnan, Lvchun County, Mt. Huanglian , 27-31.VII.2018, HL. Han and J. Wu legs., genit. prep. WuJ-086-1 (NEFU) ; 2 ♂, China, Prov. Yunnan, Baoshan City, Mangkuan Town , 30.VII-2.VIII.2014, HL. Han leg., genit. prep. WuJ-698-1 (NEFU) ; 1 ♂, China, Chongqing Municipality, Mt. Simian , 24.VII.-4.VIII.2019, TT. Zhao and SC. Deng legs., genit. prep. WuJ-536-1 (NEFU) ; 1 ♂, 1 ♀, China, Chongqing Municipality, Mt. Simian , 23.VII.-6.VIII.2018, GX. Wang and WJ. Li legs., genit. prep. WuJ-537-1, WuJ-708-2 (NEFU) ; 2 ♂, China, Chongqing Municipality, Mt. Simian , 29.VII.-2.VIII.2020, HL. Han and J. Wu legs., genit. prep. WuJ-707-1 (NEFU) .

Redescription.

Adult (Figs 3-5 ). Forewing length 17-20 mm, wingspan 36-42 mm in male, 21 mm and 42 mm in the single studied female. Head yellowish brown; labial palpus brown; antennae brown with a small silvery basal spot, shortly pectinate in male and filiform in female. Thorax mainly reddish brown, tegula brown. Forewing elongated with acute apex, slightly concaved subapically at outer margin; upper surface without an oblique line and dark discal spot usually indistinct; ground colour yellowish brown with more or less scattered with black scales. Hindwing reddish brown, more yellowish ochreous towards the costal margin. Legs dark brown to yellowish brown; silvery spots are present at distal parts of coxa, femur, tibia and tarsal segments of foreleg. Tibial spurs 0-2-4. Abdomen reddish brown with an orange-red median band dorsally, brown ventrally.

Male genitalia (Figs 14 , 15 ). Uncus triangular, with slender tip and strongly sclerotized apical spur. Gnathos well developed, hook-shaped. Tegumen broad. Valva slender, slightly narrower at terminal part; cucullus rounded. Juxta faintly sclerotized, nearly rectangular, with a pair of membranous, setaceous, finger-shaped lateral processes. Vinculum strongly sclerotized. Saccus not obvious. Aedeagus slender, arc-curved, slightly expanded at caecum then tapering towards terminus; terminal part sclerotized, long spur-shaped. In some individuals, the aedeagus are robust, thicker, and less strongly curved.

Female genitalia (Fig. 16 ). Papillae anales broad, flattened, densely covered with setae. Anterior apophyses robust, acuate apically; posterior apophyses slender, ca 1.5 × the length of anterior apophyses. Genital chamber smooth, sclerotized. Ductus bursae narrow in base; subbasal part swollen, strongly sclerotized; terminal part slender, membranous, slightly twisted. Corpus bursae large, ovoid, covered with tiny granules; signum long and narrow, split into a pair of slightly joined triangular plates at middle, the surface of plate densely covered with fine tooth.

Bionomics.

The specimens from Chongqing were collected with a light trap close to a subtropical mixed forest in July to August (Fig. 24 ).

Distribution.

China (Hubei, Guangxi, Sichuan, Chongqing, Yunnan, Xizang), Myanmar, Thailand, northern and central Vietnam.

Remarks.

We noticed that the males collected from Chongqing (Figs 3 , 14 ) showed some differences from those collected from Yunnan (Figs 4 , 15 ): the population from Chongqing is distinctly larger in size: the forewing is usually 2 mm and the wingspan 4-5 mm longer than the population from Yunnan; and the aedeagus is thicker, more robust, and less strongly curved. Therefore, we presume that the members from Chongqing possibly represent a new taxon, e.g. a new subspecies. However, given the lack of enough morphological and molecular evidence to prove it, these differences are presently regarded as intraspecific variations.

Figures

Figures 1 - 11. Adults: 1 Iragoides peiwangi sp. nov., male, holotype, Xizang, China (NEFU) 2 I. peiwangi sp. nov., male, paratype, Xizang, China (NEFU) 3 I. elongata Hering, 1931, male, Chongqing, China (NEFU) 4 I. elongata Hering, 1931, male, Yunnan, China (NEFU) 5 I. elongata Hering, 1931, female, Chongqing, China (NEFU) 6 Caelestomorpha serratus sp. nov., male, holotype, Xizang, China (NEFU) 7 C. serratus sp. nov., male, paratype, Xizang, China (NEFU) 8 C. endodonta (Hampson, 1987), male, N. W. India (MWM / ZSM) 9 Euphlyctina phaeopasta (Hampson, 1906), male, Xizang, China (NEFU) 10 E. phaeopasta (Hampson, 1906), female, Xizang, China (NEFU) 11 Mummu aerata Solovyev & Witt, 2009, male, Xizang, China (NEFU). Scale bar: 1 cm.

Figures 12 - 16. Male genitalia of Iragoides spp. 12 I. peiwangi sp. nov., male, holotype, Xizang, China (NEFU) 13 I. peiwangi sp. nov., male, paratype, Xizang, China (NEFU) 14 I. elongata Hering, 1931, male, Chongqing, China, genit. prep. WuJ- 536 - 1 (NEFU) 15 I. elongata Hering, 1931, male, Yunnan, China, genit. prep. WuJ- 086 - 1 (NEFU) 16 I. elongata Hering, 1931, female, Chongqing, China, genit. prep. WuJ- 708 - 2 (NEFU). Scale bars: 2 mm.

Figures 24 - 27. Biotopes: 24 China, Chongqing Municipality, Mt. Simian, biotope of Iragoides elongata Hering, 1931, photo by J. Wu 25 - 27 China, SE Xizang, Linzhi City, Motuo County: 25 Beibeng Countryside, Dergong Village, biotope of Iragoides peiwangi sp. nov., Caelestomorpha serratus sp. nov., Euphlyctina phaeopasta (Hampson, 1906) and Mummu aerata Solovyev & Witt, 2009, photo by H. L. Han 26, 27 two different collecting sites in Gedang Countryside, biotope of Caelestomorpha serratus sp. nov. and Euphlyctina phaeopasta (Hampson, 1906), photo by J. Wu.