Orthozona parallelilineata Zhao, Zhang & Han, 2023

Zhao, Ting-Ting, Zhang, Xin-Yu & Han, Hui-Lin, 2023, Description of one new species of the genus Orthozona Hampson, 1895 (Lepidoptera, Erebidae, Herminiinae) from China, ZooKeys 1153, pp. 65-72 : 65

Orthozona parallelilineata Zhao, Zhang & Han sp. nov.

Figs 1 , 2 , 7 , 9 , 12-14

Material examined.

Holotype: ♀, China; Xizang Autonomous Region, Linzhi City, Lulang Town ; 19.VIII.2014; H.L. Han leg.; genitalia No. zxy-0132-2; coll. NEFU . Paratypes: 1 ♀, China; Xizang Autonomous Region, Linzhi City, Pailong Countryside ; 22-23.IX.2011; H.L. Han leg.; genitalia No. ztt-5280-2 ; 1 ♀ • Xizang Autonomous Region, Linzhi City, Nadengzuo Village ; 14-15.VIII.2014; H.L. Han leg.; genitalia No. ztt-5286-2 ; 3 ♂♂, 2 ♀♀ • Xizang Autonomous Region, Linzhi City, Nadengzuo Village ; 17.VIII.2014; H.L. Han leg.; genitalia No. zxy-0099-2, zxy-0103-1, ztt-5278-2, ztt-5281-1, ztt-5284-1 ; 3 ♀♀, 1 ♂ • Xizang Autonomous Region, Linzhi City, Mount Sejila ; 20.VIII.2014; H.L. Han leg.; genitalia No. hhl-5279-1, hhl-5282-2, hhl-5283-2, hhl-5291-2 ; 1 ♀ • Xizang Autonomous Region, Linzhi City, Mount Sejila ; 22.IX.2016; Z.H. Pan leg.; genitalia No. hhl-5289-2 ; 3 ♂♂ • Xizang Autonomous Region, Linzhi City , 13.VIII.2017; H.L. Han leg.; genitalia No. hhl-5285-1, hhl-5288-1, hhl-5293-1; coll. NEFU .

Diagnosis.

O. parallelilineata sp. nov. (Figs 1 , 2 ) is superficially similar to O. quadrilineata (Figs 3 , 4 ) and P. curvilineata (Figs 5 , 6 ) but can be separated from these species by the following characters. In the male genitalia (Fig. 7 ), the valva is narrower (in P. curvilineata , the cucullus is roundish and broader); the sacculus process is approximately 3/4 the length of valva, narrow, and the distal part is thin, finger-shaped (in P. curvilineata , the length of sacculus processes is obviously less than 1/2 of the valva, and the sclerotized is apically pointed); the saccus is narrower (in P. curvilineata , the saccus is broader); the phalli are slightly longer (in P. curvilineata , the phalli are shorter and stouter).

The characters of female genitalia (Fig. 9 ) are very similar to those of O. quadrilineata (Fig. 10 ) and P. curvilineata (Fig. 11 ); the corpus bursae is covered with sparse spinules (in O. quadrilineata and P. curvilineata , the spinules are more dense); the ductus bursae has two long, sclerotized longitudinal bands, which is similar to that of P. curvilineata (in O. quadrilineata , the ductus bursae has a small sclerotized band).

Description.

Adult (Figs 1 , 2 ). Wingspan 37-39 mm in both sexes. Head: dark brown; labial palpus sickle-shaped in male, extended forward in female; antenna filiform. Thorax: patagium and tegula dark brown; mesothorax and metathorax light ochre-grey. Forewing light ochre-brown, diffused with brown scales; antemedial line dark brown, excurved, with a deep, excurved dent in Cu2-1A+2A area; medial line inwardly oblique, dark blackish brown, broadly band-shaped, slightly curved inwards; postmedial line narrow, brown, waved on the vein, with a large, excurved dent at the costal margin region, and a large, incurved dent in Cu2-1A+2A area; subterminal line inwardly oblique, dark blackish brown, broadly band-shaped, slightly curved inwards, parallel to the medial line, and running from the apex to inner margin close to the tornus; terminal line grey, narrow; orbicular spot small, brown, distinct, encircled with a halo; reniform spot oval; a flap with a fringe of scales underlapping the forewing costa below over ca 2/3 of its length in male. Hindwing slightly lighter than forewing; media line brown, more prominent in inner margin region; postmedial line very narrow, almost not visible; subterminal line broad, blackish brown to brown, gradually noticeable from costal to inner margin; discal spot obscure. Both forewing and hindwing with a discal spot on the ventral side, respectively. Abdomen: light ochre-grey, rather slender, terminus with yellow tufts.

Male genitalia (Fig. 7 ). Tegumen broad, slightly longer than vinculum. Vinculum narrow, U-shaped. Saccus with a rounded and rough central plate. Valva narrow, insole-shaped, gradually widening from base to cucullus; sacculus moderately sclerotized, narrow, band-shaped, ca 3/4 length of valva; sacculus process sclerotized, narrow, finger-shaped, weakly split from the valva; costa flattened, tapering from basal to terminal part, ca 2/3 length of valva; cucullus smoothly arched. Uncus long and slender, tapering from basal part to top, curved at 1/3 from base, apically sharp. Juxta inverted V-shaped, slightly concavea on both sides, papillate and sclerotized apically. Phallus straight; coecum narrow, ca 1/3 length of aedeagus; carina with a short and narrow spine, and with a sclerotized and short band ventrally. Vesica has four membranous diverticula, densely covered with small grains; basal part of vesica with a reversed, curved, saw-toothed cornutus; subbasal diverticulum is the largest.

Female genitalia (Fig. 9 ). Ostium bursae broad and straight. Dorsal side of 8th segment with a pair of subcircular, slightly sclerotized areas, connected to base of apophysis anterior. Ductus bursae flattened, shorter than 1/2 length of corpus bursae, with two long, sclerotized longitudinal bands ca 2/3 length of ductus bursae. Corpus bursae membranous; anterior part densely covered with small granulations, with an oval signum covered with small, stout spines; posterior half smooth, covered with longitudinal wrinkles. Apophysis anterior thicker and longer than apophysis posterior. Papilla analis thick and short.

Distribution.

China (Xizang: Linzhi) (Fig. 12 ). This species occurs in grasslands around coniferous and broad-leaved mixed forests in the Xizang Autonomous Region (Figs 13 , 14 ). It flies in the dry season. Specimens were captured with UV light in August.

Etymology.

The species is named for the parallel medial and subterminal lines.

Remarks.

Orthozona quadrilineata and Paracolax curvilineata are very similar in external appearance and genitalia in both sexes. However, they are not discussed further here due to the poor condition of their materials; the relationship between these three species deserves in-depth study when the materials become available. In this paper, one female of O. quadrilineata was collected by Dr M. Owada on 25 September 1983 in Sikkim, India (genitalia slide no. NSMT4373).

Figures

Figures 1 - 6. Orthozona and Paracolax spp., adults 1 O. parallelilineata sp. nov., female, holotype, Xizang 2 O. parallelilineata sp. nov., male, paratype, Xizang 3 O. quadrilineata (Moore, 1882), female, Sikkim (from Dr Mamoru Owada) 4 O. quadrilineata (after Smetacek and Kitching 2012) 5 P. curvilineata (Wileman, 1915), male, Taiwan (from Dr Shipher Wu) 6 P. curvilineata, female, Taiwan (from Dr Shipher Wu).

Figures 7 - 11. Genitalia of Orthozona and Paracolax spp. 7 O. parallelilineata sp. nov., paratype, genit. prep. zxy- 0103 - 1 8 P. curvilineata (Wileman, 1915), Taiwan (from Dr Mamoru Owada, genit. prep. NSMT 4187, in NSMT) 9 O. parallelilineata sp. nov., holotype, genit. prep. zxy- 0132 - 2 10 O. quadrilineata (Moore, 1882), Sikkim (from Dr Mamoru Owada, genit. prep. NSMT 4373, in NSMT) 11 P. curvilineata (from Dr Mamoru Owada).

Figures 12 - 14. Distribution and collecting sites of Orthozona spp. 12 distribution map: a = Mount Sejila; b = Nadengzuo Village; c = Lulang Town; d = Layue Village; e = Pailong Countryside 13 collection site at Nadengzuo Village, Linzhi City, Xizang Autonomous Region 14 collection site in Luluang countryside, Linzhi City, Xizang Autonomous Region.