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

description: Sorolopha baribaris Sakagami, sp. nov.
(Figs 9, 10, 15, 20)
urn:lsid:zoobank.org:act: 15FEB3A8-8E02-4652-BFE0-C441A4634A5E
Diagnosis. Sorolopha baribaris has a mean forewing length of 6.8 mm (5.5–7.9 mm, n = 37), with little sexual dimorphism except for scale tuffs on the abdomen. Males have scale tuffs on the abdomen, but females don’t. The ground color of the forewing ranges from deep green to brown. The forewing, which is relatively narrow, has a brown subcircular marking in apical area. The male genitalia of S. baribaris are characterized by a valva with a neck, a wide ventral process, and a short cucullus. The male genitalia of this species are similar to those of S. ferruginosa, described from Thailand (cf., Kawabe 1989: 30, fig. 106), but they can be distinguished by the gently curved sacculus, the shorter ventral process of the valva, the longer cucullus, and the gently curved phallus. This species is also superficially similar to S. sphaerocopa, also recorded from Japan (cf., Le et al. 2013: 523, fig. 6; Nasu 2013: 202, pl. 24, figs. 5–6), but it can be distinguished by the round markings and the position of the secondary scale tuff in the male, which is on the hindwing in S. sphaerocopa, but on the abdomen in this species.
Description. Head (Fig. 10): Upper frons greenish brown or dark brown, lower frons yellowish brown, vertex roughly scaled, greenish brown or dark brown with blue illumination, labial palpus yellowish brown; antenna brown.
Thorax: Dark green or dark brown, tegulae dark green to dark brown. Legs, except tarsus, light brown dorsally; tarsus dark brown, light brown at apex of each segment; legs dark brown ventrally. Forewing (Fig. 9) mean length 6.5 mm in male (5.5–7.3 mm, n = 23), 7.2 mm in female (6.0–7.9 mm, n=14), broadened distally, costa gently curved in distal half, with scattered dark brown spots; nine pairs of strigulae from base to R 4; first to fourth strigulae forming grayish green or light brown fasciae, fascia extending from first strigula merged to that from second strigula at middle, reaching dorsum, fascia extending from third strigula merged with that from fourth strigula at middle, reaching dorsum and curved outward, fascia dark brown between fourth and fifth strigulae, reaching near tornus, oblique grayish green stria extending from strigula fifth, merged with that from sixth strigula on R 1, reaching tornus, seventh, eighth, and nineth strigulae gray or light brown; preterminal spot large, circular, dark brown; apex dark brown; cilia dark brown. Hindwing dark brown, paler towards base. Cilia dark brown.
Abdomen: Dark brown dorsally; beige ventrally, and with black scales from A1 to A3. Scale tuffs on posterior end of A 2 in male. Male genitalia (Fig. 15) with tegumen high, narrowed towards apex, erect subtriangular. Uncus small, semicircular. Socius about 2/5 length of tegumen, slightly curved, haired at clavate apex. Valva narrow at base third; sacculus well defined with small prominence, densely haired especially on ventral margin; cucullus short, with ventral process wide, circular, short, with spines along ventral margin, rounded at apex. Phallus lightly sclerotized, moderate in length, curved. Female genitalia (Fig. 20) with sterigma strongly sclerotized, funnel-shaped, with wide frontal cleft. Ductus bursae 1.2 times as long as corpus bursae, sclerotized in posterior 1/3, ductus seminalis originating from middle with spherical bulla seminalis. Corpus bursae mushroom-shaped, narrowed in anterior 2/3, with two signa close to ductus bursae, one short horn shaped, another small, round scobination.
Material examined. Holotype. JAPAN: Wakayama Pref.: Hirai, (33°38′14″N, 135°41′23″E, alt. 142 m), ♂, emerged on 27.V.2018, reared from leaves of Actinodaphne acuminata collected on 8.V.2018, K. Sakagami leg. genitalia slide KS226♂. Paratypes. JAPAN: HONSHU: Wakayama Pref.: Shitaki (33°51′25″N, 135°50′25″E, alt. 137m), 10♂, 8♀, emerged on 27–28. V.2019, reared from leaves of A. acuminata collected on 11. V.2019, K. Sakagami leg., genitalia slide 197♂, 198♀, 200♂, 202♂, 208♂, 210♂, 216♀; Unehata (33°45′23″N, 135°47′52″E, alt. 147m), 5♂, 3♀, emerged on 21. V.–4. VI.2019, reared from leaves of A. acuminata collected on 11. V.2019, K. Sakagami leg., genitalia slide KS 201♀; type locality, 6♂, 3♀, emerged on 23–28. V.2018, reared from leaves of A. acuminata collected on 8. V.2018, K. Sakagami leg., genitalia slide KS199♂, 215♀. KYUSHU: Miyazaki Pref.: Gônohara (31°41′52″N, 131°22′00″E, alt. 60 m), Nichinan-shi, 1♂, collected on 23.VII.2022, K. Sakagami leg., genitalia slide KS222♂.
Distribution. Japan (Honshu, Kyushu).
Host plant. Actinodaphne acuminata (Lauraceae)
Biology. Adults emerge from leaf shelters of the host between May and June in Honshu. An adult was collected by a light trap in Kyushu in late July. Larvae tie together young leaves of A. acuminata and feed on the leaves within the leaf shelters between April and May in Honshu (Fig. 21). This species emerges approximately 10 days before S. plinthograpta and S. sugiurai under laboratory conditions.
Etymology. This species is named from “baribarinoki,″ which is the Japanese name for the host plant Actinodaphne acuminata.
Remarks. This species shows similarities to members of the cyclotoma group in various morphological features, such as the male genitalia. However, the signa of this species differs from that of the cyclotoma group. Further investigation is required to accurately determine the taxonomic position of this species.
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 pages 138-141, DOI: 10.11646/zootaxa.5278.1.6, http://zenodo.org/record/7895134