Cochylidia Obraztsov, 1956

Sun, Yinghui & Li, Houhun, 2012, Review of the genus Cochylidia Obraztsov (Lepidoptera: Tortricidae: Cochylini) in China, Zootaxa 3268, pp. 1-15 : 2

Cochylidia Obraztsov, 1956

Cochylidia Obraztsov, 1956: 14 ; Razowski, 1968: 3; Razowski, 1970: 374; Razowski, 1987: 169; Liu & Li, 2002: 65; Brown, 2005: 200.

Type species: Tortrix subroseana Haworth, [1811] .

Diagnosis. Cochylidia is characterized by the combination of the following characters: labial palpus porrect, the second segment dilated, the third segment short and small, often concealed in the scaling of the second; forewing with all veins separate, R2 and R3 coalescent, or R4 and R5 stalked in some species, R5 to the costal margin, 1A and 2A stalked distally; hindwing with Rs and M1 stalked at base or arising from the same point, M3 separate from CuA1 basally; male hindwing with costal fold; female hindwing usually with two spines in the frenulum; male genitalia with the tegumen moderately developed, the uncus and gnathos absent, the socius drooped or erect, the median process of the transtilla with or without teeth, and the vinculum membranous ventrally; and female genitalia with the apophysis posterioris having a basal plate, the sterigma partially hidden in a membranous pocket formed by the seventh sternum, the ductus bursae sclerotized, and the corpus bursae membranous, not conspicuously differentiated from the ductus bursae, with tiny spines and lacking a signum.

Cochylidia is extremely similar to Diceratura in the presence of broad costal arm of the valva. Cochylidia can be distinguished from Diceratura by the absence of the uncus (well developed in Diceratura ) and the costal arm of valva with tiny distal spines (lacking spines in Diceratura ).

Biology. There are one or two generations annually, and over-wintering occurs in the larval stage. The larvae are oligophagous and utilize mainly plants in the Asteraceae ( Razowski 1987) .

Distribution. The nine described Cochylidia species and one subspecies are distributed in the Palaearctic and Oriental regions. In China the genus occurs mainly in the southeastern area and is encountered rarely in the northwestern area ( Fig. 1 ).

Figures

FIGURE 1. The distribution of Cochylidia Obraztsov in China. ․ [brown squares], C. altivaga; ․ [green squares], C. contumescens; ● [blue circles], C. heydeniana; ˔ [red triangles], C. implicitana; + [plus sign], C. moguntiana; ● [pink circles], C. multispinalis sp. nov.; ● [red circles], C. oblonga sp. nov.; ˔ [black triangles], C. richteriana; ● [gray circles], C. liui sp. nov.; ․ [yellow circles], C. subroseana roseotincta.