Squamosa undulophallus, Wu & Solovyev & Han, 2022

Wu, Jun, Solovyev, Alexey V. & Han, Hui-Lin, 2022, Two new species of Squamosa Bethune-Baker, 1908 (Lepidoptera, Limacodidae) and first female record of S. chalcites Orhant, 2000 from southern Asia, ZooKeys 1090, pp. 149-159 : 149

Squamosa undulophallus sp. nov.

Figs 7 , 8 , 19 , 20

Material examined.

Holotype. ♂, China, Xizang Autonomous Region, Linzhi (= Nyingchi) City , Motuo (= Medog) County , Beibeng Countryside , Dergong Village , 850 m a.s.l., 25.V.-4.VI.2021, leg. HL. Han, genit. prep. WuJ-518-1 (NEFU) . Paratypes. 1♂, India, sept. or. W. Meghalaya, Garo Hills, Nokrek Nat. Park , 25°40'N, 91°04'E, 2-13.VII. 1997, 1150 m a.s.l., leg. Afonin and Siniaev, genit. prep. 16149 (MWM/ ZSM) ; 1♂, Myanmar, Putao , 550 m a.s.l., 27. IV. 1998, leg. Murzin and Sinjaev, genit. prep. 16169 (MWM/ ZSM) ; 1♂, Myanmar, 16 km E Putao , 500 m a.s.l., 28-30.IV.1998, leg. Murzin and Sinjaev, genit. prep. 16230 (MWM/ ZSM) ; 1♂, Myanmar, 21 km E Putao, Nan Sa Bon Village , 550 m a.s.l., 1-5.V.1998, leg. Murzin and Sinjaev, genit. prep. 16150 (MWM/ ZSM) ; 1♂, Myanmar, 25 km E Putao, env. Nan Sa Bon Village , 800 m a.s.l., 6-9. V. 1998, leg. Murzin and Sinjaev, genit. prep. 16231 (MWM/ ZSM) .

Diagnosis.

The new species is very similar to S. chalcites (Figs 9 , 12 ) in appearance, but it can be distinguished from the latter by the following characters: middle of costal margin area of forewing is covered by dense black scales and the medial patch of forewing is conspicuous. In S. chalcites , the forewing only bears small scattered black scales and the medial patch of forewing is blurry.

Description.

Adult (Figs 7 , 8 ). Wingspan 35-39 mm in male. Head brown; labial palpus short, brown; male antennae brown, bipectinated at basal half then serrate. Thorax dark brown to black dorsally, mesothorax with conspicuous tuft of long black hairs anteriorly; tegula brown. Scales on legs dark brown to pale yellow. Forewing distinct elongate, ground colour dark brown mixed with numerous black scales, especially dense in middle part of costal margin area, outer margin area pale brown; a conspicuous, large, silky, rounded medial patch located at outside of cell, inner half bluish black, outer half reddish brown with an arched bright line embedded in middle; subterminal line narrow, black, with depressions in the region of vein R4, and slightly concave between veins M3 and CuP; two distinct black spots at middle of veins CuP and 1A+2A; fringe brown. Hindwing ground colour greyish brown to dark brown, anal margin area is darker; fringe pale brown. Abdomen brown to dark brown, mixed with little black hairs dorsally and long black hairs at terminal area.

Male genitalia (Figs 19 , 20 ). Uncus short, with apex deeply bifid, strongly sclerotised. Gnathos finger-shaped or slightly widened near apex, blunt apically. Tegumen broad. Valva short and broad; sacculus swollen at base, without saccular process; costa slightly concave at middle; cucullus narrow and rounded. Juxta asymmetrical, horseshoe-shaped, central depression V-shaped; left process strongly sclerotised, long plate-shaped, bearing a distinct spur near base in some individuals; right process plate-shaped, strongly sclerotised apically. Vinculum narrow. Saccus not obvious. Phallus thick, conspicuously waved, slightly thinner near apex, strongly sclerotised and somewhat bifid terminally.

Female genitalia. Unknown.

Distribution.

China (Xizang: Motuo), India (Meghalaya), Myanmar (Kachin) (Fig. 25 ).

Etymology.

The species is named Squamosa undulophallus after its distinctly wavy phallus.

Bionomics.

The specimens were collected from April to July at altitudes about 550-1150 m a.s.l. The collection area in China is a subtropical climate zone (Fig. 28 ).

Figures

Figure 25. Distribution map of Squamosa spp.: triangle: S. medogensis sp. nov. (China: Xizang); circles: S. undulophallus sp. nov. (China: Xizang; India: Meghalaya; Myanmar: Kachin); squares: S. chalcites Orhant, 2000 (China: Hubei, Chongqing, Sichuan, Yunnan, Xizang; Thailand; Myanmar); stars: S. brevisunca brevisunca Wu & Fang, 2009 (China: Hainan, Guangxi, Yunnan; Vietnam).

Figures 1 - 12. Adults of Squamosa spp.: 1, 2 S. medogensis sp. nov., males, holotype (1 in NEFU) and paratype (2 in NEFU) 3 S. ocellata (Moore, 1879), male, Sikkim, India (in MWM / ZSM) 4 S. brevisunca brevisunca Wu & Fang, 2009 (= S. svetlanae Solovyev & Witt, 2009, syn. nov., male, holotype) (in MWM / ZSM) 5 S. brevisunca brevisunca Wu & Fang, 2009, male, holotype (in IZCAS) 6 S. brevisunca yunnanensis Wu & Fang, 2009, male, Yunnan, China (in NEFU) 7, 8 S. undulophallus sp. nov., males, holotype (7 in NEFU) and paratype (8 in MWM / ZSM) 9 S. chalcites Orhant, 2000, male, Chongqing, China (in NEFU) 10, 11 S. monosa Wu & Pan, 2015, male, Xizang, China (10 in NEFU) and female, Xizang, China (11 in NEFU) 12 S. chalcites Orhant, 2000, female, Chongqing, China (in NEFU). Scale bar: 2 cm.

Figures 13 - 24. Genitalia of Squamosa spp.: 13, 14 S. medogensis sp. nov., males, holotype (13 in NEFU) and paratype (14 in NEFU) 15 S. brevisunca yunnanensis Wu & Fang, 2009, male, Yunnan, China, genit. prep. WuJ- 090 - 1 (in NEFU) 16 S. ocellata (Moore, 1879), male, Sikkim, India (in MWM / ZSM) 17 S. brevisunca brevisunca Wu & Fang, 2009, male, holotype (in IZCAS) 18 S. brevisunca brevisunca Wu & Fang, 2009 (= S. svetlanae Solovyev & Witt, 2009, syn. nov., male, holotype) (in MWM / ZSM) 19, 20 S. undulophallus sp. nov., males, holotype (19 in NEFU) and paratype (20 in MWM / ZSM) 21 S. chalcites Orhant, 2000, male, Chongqing, China, genit. prep. WuJ- 538 - 1 (in NEFU) 22 S. monosa Wu & Pan, 2015, male, Xizang, China, genit. prep. WuJ- 516 - 1 (in NEFU) 23 S. chalcites Orhant, 2000, female, Chongqing, China, genit. prep. WuJ- 540 - 2 (in NEFU) 24 S. monosa Wu & Pan, 2015, female, Xizang, China, genit. prep. WuJ- 517 - 2 (in NEFU).

Figures 26 - 28. Biotopes: China, SE Xizang, Linzhi (= Nyingchi) City, Motuo (= Medog) County 26, 27 Gedang countryside, two different collecting sites of S. medogensis sp. nov., photograph by J. Wu 28 Beibeng Countryside, Dergong Village, biotope of S. undulophallus sp. nov., photograph by HL. Han.