Cameraria rhynchophysa Bai

Bai, Haiyan, Xu, Jiasheng & Dai, Xiaohua, 2015, Three new species, two newly recorded species and one newly recorded genus of Lithocolletinae (Lepidoptera: Gracillariidae) from China, Zootaxa 4032 (2), pp. 229-235 : 234

Cameraria rhynchophysa Bai , sp. nov.

Figs. 3 , 8 , 12

Diagnosis. Cameraria rhynchophysa Bai , sp. nov. is similar to C. jiulianshanica Bai , sp. nov. and C. trizosterata Kumata with the forewing having three whitish fasciae, but can be distinguished by the following characters: in C. rhynchophysa fasciae of forewing are not interrupted, and there is also a basal white streak. Second fascia of C. jiulianshanica and third fascia of C. trizosterata are interrupted, and basal white streak is absent. C. rhynchophysa shows remarkable similarity to C. jiulianshanica in the male genitalia structures, except for phallus. C.rhynchophysa has a beak-shaped process at basal 2/5 of the phallus, and vesica has a horn-shaped cornutus; C. jiulianshanica lacks these.

Description. Adult ( Fig. 3 ). Wingspan 5.0 mm. Head and antenna whitish; flagellum with pale milk-yellow rings. Labial palpus whitish, outer surface with a fuscous longitudinal stripe extending from base to apex. Thorax and tegula whitish. Forewing grey-brownish, with whitish markings edged black along outer side; basal streak about 1/8 as long as forewing; 3 whitish fasciae extending from basal 1/4, basal 3/4 and near apex of costa to dorsum respectively, oblique inwards, arranged nearly parallel; costa between the second and third fascia black; cilia pale grey-brownish. Hindwing and its cilia pale grey. Foreleg with coxa and femur whitish; tibia with ventral surface and apical half of dorsal surface fuscous, basal half of dorsal surface whitish; tarsus whitish, with a fuscous ring. Mid- and hindlegs whitish; mid tibia with 3 black oblique fasciae on outer surface, one of these fasciae placed at distal end of tibia, mid tarsus with 3 black rings; hind tibia grey-brownish on outer surface, black apically, with whitish long hairs above, hind tarsi with 2 black rings.

Male genitalia ( Fig. 8 ). Tegumen ca. 520 Μm long, bottle-shaped, basal 3/4 widened, apical 1/4 narrowed and bottleneck-like, divided into two thin processes apically, each process with a setae subapically, ca. 170 Μm in length. Valva as long as tegumen, narrow groove-shaped, distal part tapering to a pointed apex; inner surface densely covered with setae, with 3–4 teeth distally. Vinculum bifurcated apically, each branch ca. 350 Μm long, pointed at apex. Phallus nearly as long as valva, strongly sclerotized; straight, tubular, slightly widened basally, with a beak-shaped process at basal 2/5; vesica with one horn-shaped cornutus. Flap-like eighth sternite ca. 400 Μm, posterior margin concave, Vshaped.

Female. Unknown.

Type material. Holotype ♂: China, Daqiutian, Jiulian Mountain, Jiangxi, 18. i. 2013. leg. Jiasheng Xu & Xiaohua Dai Slide No. B12073 ♂.

Host plant. Annonaceae : Fissistigma uonicum (Dunn) Merr.

Distribution. China (Jiangxi).

Bionomcs. Adult examined in this paper was reared from Fissistigma uonicum leaves. The larva creates blotch mine on the upper surface of host plant leaf ( Fig. 12 ).

Etymology. The name of this species is derived from Latin rhynchophysus. It means “beak-shaped process”, referring to the shape of process of phallus.

Figures

FIGURES 1 – 4. Adults. Scale bar 1 mm. 1. Chrysaster hagicola Kumata. 2. Cameraria diplodura Bai, sp. nov. 3. C. rhynchophysa Bai, sp. nov. 4. C. jiulianshanica Bai, sp. nov.

FIGURES 5 – 9. Genitalia. Scale bar 0.5 mm. 5. Chrysaster hagicola Kumata. 6. Cameraria magnisignata Kumata. 7 a, b. C. diplodura Bai, sp. nov. (a. male genitalia, b. © eighth sternite, ® vinculum). 8. C. rhynchophysa Bai, sp. nov. 9. C. jiulianshanica Bai, sp. nov.

FIGURES 10 – 12. Mine of larva. 10 a, b. an unidentified plant (Fabaceae), host of Cameraria magnisignata Kumata. 11. Cyclobalanopsis sp. (Fagaceae), host of C. diplodura Bai, sp. nov.. 12. Fissistigma uonicum (Annonaceae), host of C. rhynchophysa Bai, sp. nov.