Paradoxecia tuzovi O. Gorbunov, 2021

Gorbunov, O. G., 2021, A new species of the genus Paradoxecia Hampson, 1919 (Lepidoptera: Sesiidae) from West Malaysia with a catalogue of the genus, Russian Entomological Journal 30 (3), pp. 328-335 : 329-332

Paradoxecia tuzovi O. Gorbunov , sp.n.

Figs 1–10 .

MATERIAL. Holotype ♂ ( Figs 1–2 ) with labels: “W. Malaysia, Pahang, / Genting Highland , 800–1000 m, / 03° 22´N, 101° 47´E, / 17–23.X.2010, / V. Tuzov leg.” (white); “ SESIIDAE / Pictures Nos / 0279-0280–2021 / Photo by O. Gorbunov ” (white); “ HOLO- TYPUS ♂ / Paradoxecia tuzovi / O. Gorbunov, 2021 / O. Gorbunov des., 2020” (red) ( COGM).

Paratypes 6 ♂♂ ( Figs 3–6 ), same locality and date, V. Tuzov leg. ( Sesiidae pictures Nos 0269-0278–2021) , 1 ♂ with genitalia preparation No OG –017-2021 ( Figs 7–10 ) ( COGM) .

DESCRIPTION. Male (holotype) ( Figs 1–2 ). Alar expanse 26.1 mm; body length 11.9 mm; forewing 12.0 mm; antenna 5.5 mm.

Head with antenna black with dark greenish-blue sheen; scapus grey-brown with blue-purple sheen; frons ventrally pale lemon yellow, but remaining part entirely covered with scales of vertex; basal joint of labial palpus lemon yellow, mid and apical joints whitish; vertex grey-brown with greenish-bronze sheen; pericephalic hairs whitish with a few grey-brown scales dorsally.

Thorax with patagia grey-brown with blue-violet sheen and a few lemon yellow scales laterally; tegula grey-brown with greenish-violet sheen, a few lemon yellow scales anteriorly at inner margin and narrow lemon yellow exterior and posterior margins; mesothorax grey-brown with greenish-violet sheen; metathorax lemon yellow with a few grey-brown scales medially; pro- and mesothorax laterally mixed with grey-brown with bright violet sheen and lemon yellow with golden hue scales; metathorax laterally completely lemon yellow with golden hue; posteriorly both metepimeron and metameron smooth scaled lemon yellow with golden hue.

Legs with neck plate yellowish; fore coxa lemon yellow with golden hue and narrow grey-brown interior and posteri- or margins; fore femur externally lemon yellow with an admixture of individual grey-brown scales, internally entirely lemon yellow with golden hue; fore tibia externally mixed with grey-brown, dark yellow and lemon yellow scales, internally entirely lemon yellow with golden hue; fore tarsus grey-brown with bronze sheen and an admixture of a few dark yellow scales on basal tarsomere; mid coxa pale yellow with a few lemon yellow scales anteriorly; mid femur lemon yellow with golden hue and a few grey-brown scales exteriorly; mid tibia and spurs entirely lemon yellow with golden hue; basal tarsomere of mid tarsus lemon yellow with golden hue, remaining tarsomeres grey-brown with bronze sheen mixed with lemon yellow scales both internally and ventrally; hind coxa pale yellow with a few lemon yellow scales anteriorly; hind femur lemon yellow with golden hue and a narrow grey-brown anterior margin; hind tibia lemon yellow with golden hue and with an admixture of grey-brown scales with blue-bronze sheen dorsally both from base of tibia to base of mid spurs and distally; spurs whitish; three basal tarsomeres of hind tarsus each dorsally grey-brown with blue-bronze sheen and a few dark yellow scales distally, ventrally entirely lemon yellow with golden hue, two distal tarsomeres yellowish.

Forewing dorsally black with greenish-violet sheen and a small lemon yellow spot at base; costal margin dark brown with violet sheen; CuA-stem, anal margin, discal spot and veins within external transparent area dark brown with bronze sheen; discal spot narrow and small between bases of veins M 2 –CuA 1; transparent areas well-developed but densely covered with hyaline scales with brownish hue; external transparent area long and narrow between veins M 1 –CuA 1; posterior transparent area long, distinctly exceeding level of discal spot; outer margin undeveloped; cilia dark brown with bronze sheen; ventrally opaque parts dark brown with bronze-violet sheen and a few yellow scales; cilia dark brown with bronze sheen.

Hindwing transparent but covered with sparse hyaline scales with brownish hue; veins narrowly dark brown with bronze sheen; both discal spot and outer margin undeveloped; cilia dark brown with bronze sheen.

Abdomen wasp-waisted: segments 1 and 2 slightly narrowed, segments 3–5 gradually broadened and segments 6–8 gradually narrowed; dorsally tergite 1 dark brown with greenish-violet sheen medially and yellow laterally; tergites 2–4 each dark brown with greenish-violet sheen and a narrow yellow stripe cranially; tergites 5–8 dark brown with bronze-violet sheen, tergites 5–7 each with a narrow yellow stripe caudally; ventrally sternites 1+2–4 each white with an admixture of individual lemon-yellow scales; sternites 5–8 each lemon yellow with a few white scales; anal tuft extremely small yellow.

Male genitalia (paratype) (genital preparation No OG– 017-2021) ( Figs 7–10 ).

Female. Unknown.

INDIVIDUAL VARIABILITY. Slightly varying in the number of lemon yellow scales on the thorax and yellow scales on the abdomen ( Figs 1–6 ). Besides this, this new species is somewhat variable in individual size: alar expanse 25.0–26.1 mm; body length 11.8–12.2 mm; forewing 11.7– 12.0 mm; antenna 5.2–5.5 mm.

DIFFERENTIAL DIAGNOSIS. Superficially this new species is somewhat similar to P. radiata Kallies, 2002 , but it differs by the conformation of the forewing (forewing covered with light yellow-brown semitransparent scales; veins marked by dense brown scales; common M-stem strongly reduced but clearly marked by a row of brown scales in P. radiata ; compare Figs 1, 3 and 5 with fig. 1 in Kallies, 2002), by the colouration of the hind leg (hind coxa brownish-grey; hind femur externally brownish-grey with a yellow posterior margin; hind tibia fuscous, ventrally and medially yellow; spurs yellow; hind tarsus yellow with fuscous basal tarsomere dorsally in the species compare, vs. hind femur lemon yellow with golden hue and a narrow grey-brown anterior margin; hind tibia lemon yellow with golden hue and with an admixture of grey-brown scales with blue-bronze sheen dorsally both from base of tibia to base of mid spurs and distally; spurs whitish; three basal tarsomeres of hind tarsus each dorsally grey-brown with blue-bronze sheen and a few dark yellow scales distally, ventrally entirely lemon yellow with golden hue, two distal tarsomeres yellowish in P. tuzovi sp.n.) and abdomen (dorsally tergite1 yellow with a few black scales; tergites 2–6 each blackish-grey; tergites 4–5 each with a narrow yellow stripe distally; ventrally pale yellow; sternites 6–7 each with an admixture of gray scales; anal tuft yellow-grey medially in P. radiata ; compare Figs 1–6 with figs 1 and 2 in Kallies, 2002). By the stricture of the aedeagus in the male genitalia P. tuzovi sp.n. is closely related to P. myrmekomorpha ( Bryk, 1947) , P. dizona ( Hampson, 1919) , and P. fukiensis O. Gorbunov et Arita, 1997 , but it can be distinguished from all of them by the colouration of various parts of the body, especially by the absent of orange or yellow-orange scales on the abdomen.

BIONOMICS. The larval host plant is unknown. The type series was collected in the second half of October with help of unspecific artificial sex pheromones.

HABITAT. The type series was collected at the border of Upper dipterocarp forest at 800–1000 m a.s.l. with Shorea sp. , Dipterocarpus sp. ( Dipterocarpaceae ), Agathis borneensis Warb. ( Araucariaceae ) and Calophyllum sp. ( Clusiaceae ) as dominant species.

DISTRIBUTION. The new species is known only from the type locality in the state of Pahang, West Malaysia .

ETHYMOLOGY. This new species is named after my friend Dr. Vasily K. Tuzov, a great expert on Papilionoidea of the world fauna, who collected the type series of this new species.

Catalogue of the genus Paradoxecia Hampson 1919

Figures

Figs 1–6. Variability of Paradoxecia tuzovi O. Gorbunov, sp.n.: 1–2 — holotype, alar expanse 26.1 mm, Sesiidae picture Nos 0279- 0280–2021; 3–4 — paratype, alar expanse 25.4 mm, Sesiidae picture Nos 0273-0274–2021; 5–6 — paratype, alar expanse 25.0 mm, Sesiidae picture Nos 0277-0278–2021; 1, 3, 5 — dorsal view; 2, 4, 6 — ventral view. Рис. 1–6. ИЗменчивость Paradoxecia tuzovi O. Gorbunov, sp.n.: 1–2 — голотип, раЗмах крыльев 26,1 мм, Sesiidae снимки №№ 0279-0280–2021; 3–4 — паратип, раЗмах крыльев 25,4 мм, Sesiidae снимки №№ 0273-0274–2021; 5–6 — паратип, раЗмах крыльев 25,0 мм, Sesiidae снимки №№ 0277-0278–2021; 1, 3, 5 — сверху; 2, 4, 6 — сниЗу.

Figs 7–10. Male genitalia of Paradoxecia tuzovi O. Gorbunov, sp.n. Genital preparation No OG–017-2021: 7 — tegumen-uncus complex; 8 — valva; 9 — saccus; 10 — aedeagus. Scale bar: 0.5 mm. Рис. 7–10. Гениталии самца Paradoxecia tuzovi O. Gorbunov, sp.n. Препарат гениталий № OG–017-2021: 7 — тегумен-ункус комплекс; 8 — вальва; 9 — саккус; 10 — Эдеагус. МасШтаб: 0,5 мм.