Sorolopha sugiurai Sakagami 2023, sp. nov.
Creators: name: Sakagami, Kota
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Sorolopha
Sorolopha sugiurai

description: Sorolopha sugiurai Sakagami, sp. nov.
(Figs 3, 4, 12, 17)
urn:lsid:zoobank.org:act: E5ECA10A-C46E-419E-9F0D-5622891B0FFF
Diagnosis. Sorolopha sugiurai has a mean forewing length of 8.4 mm (6.9–9.3 mm, n = 32), with little or no sexual dimorphism. The forewing is expanded posteriorly, and is greenish-brown with scattered white scales, dark-brown shades, and inverted V-shaped white markings in the apical area. The apex of the forewing is relatively distinct, and the termen is slightly curved. S. sugiurai is characterized by gently curved long socii and long slender cucullus. This species is similar to S. herbifera Meyrick, 1909 in external appearance and in genitalia, especially those of the female (cf., Diakonoff 1973: 72, figs. 112, 113; Le et al. 2013: 530, figs. 9, 17). It can be distinguished from the latter by the darker coloration of head, thorax, and forewing, and by the gently curved basal area of the socii and the shorter ventral process of cucullus in the male genitalia.
Description. Head (Fig. 4): Frons and vertex dark green; labial palpus ferruginous; antenna dark brown.
Thorax: Dark brown; tegula dark green. Foreleg dark brown dorsally, beige with scattered black scales ventrally; midleg femur beige tinged with blackish scales dorsally, beige ventrally, tibia and tarsus dark brown; hindleg femur scattered with blackish scales dorsally, femur and tibia beige ventrally, dorsal side of tibia and tarsus dark brown. Forewing (Fig. 3) mean length 8.3 mm in male (6.9–9.1 mm, n = 23), 8.8 mm in female (8.1–9.3 mm, n = 9); costa gently curved, apex distinct, termen near apex slightly depressed, partly greenish-brown with white scales and dark brown areas. Costa with nine pairs of whitish strigulae from base to apex, each pair with a whitish stria extending rather obliquely; first and second strigulae forming greenish-brown patch extending to base of dorsum; third and fourth strigulae forming wide greenish-brown band reaching 1/2 length of dorsum and curved outwardly; fifth and sixth strigulae forming greenish-brown fascia running obliquely to tornus; seventh to nineth strigulae white, merging on horizontal line near costa. Inverted V-shaped white marking just below strigulae fifth‒eighth and inside dark brown spot near apex. Cilia dark brown. Hindwing with basal half light brown, distal half dark brown. Cilia dark brown.
Abdomen: Dark brown dorsally, beige with scattered dark brown scales ventrally; female with hind margin of S7 bearing wide, semi-elliptical excavation. Male genitalia (Fig. 12) with tegumen high and narrowed toward apex. Uncus obtuse with round apex. Socius slender, long, reaching mid length of tegumen, gently curved at base, haired at apical clavate. Valva long, slender, curved dorsally at apex; sacculus with nearly rectangular prominence, very densely haired on posterior edge of sacculus; cucullus slender with ventral triangular process ending in single slightly curved spine, slightly curved about 2/5 length of terminal part of cucullus. Phallus short without cornutus, slightly curved, obliquely truncate. Female genitalia (Fig. 17) with papilla analis narrow. Antrum cone-shaped, sclerotized. Ductus bursae membranous, slender, same length as corpus bursae; ductus seminalis originating from close to corpus bursae, with small oval bulla seminalis. Corpus bursae distorted ovate, signa two roundish sclerites of unequal size.
Material examined. Holotype. JAPAN: HONSHU: Wakayama Pref.: Unehata (33°45′N, 135°47′E, alt. 147 m), ♂, emerged on 10.VI.2019, reared from leaves of Actinodaphne acuminata collected on 11.V.2019, K. Sakagami leg., genitalia slide KS232♂. Paratypes. JAPAN: HONSHU: Wakayama Pref.: Wadagawa (Unehata) (33°46′N, 135°48′E, alt. 109 m), 5♂, 3♀, emerged on 31. V.–12. VI.2017, 2♂, emerged date unknown, reared from leaves of A. acuminata collected on 14. V.2017, K. Sakagami leg., genitalia slide KS 12♀, 16♂, 83♂, 84♀, wing slide KS 15♀; Unehata, Wakayama (33°45′N, 135°47′E, alt. 147 m), 9♂, 3♀, emerged on 8–11. VI.2018, reared from leaves of A. acuminata collected on 9. V.2018, K. Sakagami leg., genitalia slide KS91♂, 92♀, 188♂; same locality, 7♂, 5♀, emerged on 6–11. VI.2019, reared from leaves of A. acuminata collected on 11. V.2019, K. Sakagami leg., genitalia slide KS 190♀, 207♂; same locality, 2♂, 2♀, emerged on 6–12. VI.2022, reared from leaves of A. acuminata collected on 30.IV.2022, K. Sakagami leg.
Distribution: Japan (Wakayama Pref.).
Host plant: Actinodaphne acuminata (Lauraceae).
Biology. Adults emerge from leaf shelters of the host plant in June. Larvae use silk to tie together young leaves of A. acuminata, and they feed on the leaves within the leaf shelters. The leaf shelters frequently include larvae of other Sorolopha species (Fig. 21). Larvae cut and fold back the edge of a single leaf and pupate inside it. Despite extensive sampling in the southern part of Kii Peninsula, larvae of this species were collected only from A. acuminata at a very small area.
Etymology. This species is named as a patronym for Dr. Shinji Sugiura, who first discovered larvae of this species at the type locality, Wakayama Pref.
Remarks. This species belongs to the herbifera group (Diakonoff 1973).
description: Published as part of Sakagami, Kota, 2023, Review of the species of Sorolopha Lower (Lepidoptera: Tortricidae) in Japan with descriptions of three new species, pp. 131-142 in Zootaxa 5278 (1) on page 134, DOI: 10.11646/zootaxa.5278.1.6, http://zenodo.org/record/7895134