Fibuloides trapezoidea

Zhang, Aihuan & Li, Houhun, 2011, Review of the genus Fibuloides Kuznetsov in China (Lepidoptera, Tortricidae, Olethreutinae), ZooKeys 81, pp. 39-50: 41-43

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scientific name

Fibuloides trapezoidea

sp. n.

Fibuloides trapezoidea  ZBK  sp. n. Figs 110

Type material.

Holotype ♂ -China, Guizhou Province: Chishui (28°34'N, 105°42'E), 390 m, 30.V.2000, coll. Yanli Du, genitalia slide no. YHL04481; Paratype - 1 ♂, 27.V.2000, other same data as for holotype, genitalia slide No. ZAH10019.


This species is similar to Fibuloides cyanopsis  (Meyrick, 1912) in the shape of uncus and socius, but can be distinguished by the trapezioidal cucullus and the absence of the enlarged, flattened bristles on the neck of valva. In Fibuloides cyanopsis  the cucullus is ovate and the neck of valva has two or more short enlarged, flattened bristles on its ventral side.


Adult (Fig. 1). Forewing length 6.5 mm. Head: Vertex with gray scales; frons white. Antenna light brown. Labial palpus slender, gray intermixed with brown, third segment porrect. Thorax: Thorax and tegula gray intermixed with light brown. Forewing elongate triangular, with ground color dark gray; basal patch extending from costal 1/4 to 1/3 of dorsum, protrudent in middle on outer side; median fascia short and broad, extending from costal half, terminated at end of cell; ocellus nearly quadrate, containing some short brown striae; apex brown, protrudent; termen slightly concave below apex, bordered by brown scales; costa with nine pairs of strigulae from base to apex, each pair of strigulae with a short brown stria extending obliquely; first to fourth pairs between base of wing and the point where Sc meets costa, broad brown patch lying between second and third pairs; fifth and sixth pairs between Sc and R1; distal three pairs distributed between pairs of veins R 1-R2, R2-R3, R3-R4 respectively, separated from each other by dark brown scales; cilia gray mixed with brown. Hindwing and cilia gray. Legs gray, tarsi with brown rings.


Male genitalia (Fig. 10). Uncus bifurcated from near base, produced into two slender, parallel and widely separated tips. Socius broad and short, about twice as long as wide, drooping, hairy, with round end. Valva broad at base; neck distinct, without enlarged, flattened bristles; sacculus about twice size of cucullus, with a line of flattened long bristles; cucullus trapezoidal, hairy, with marginal spines. Anellus closely surrounding basal 1/3 of aedeagus; aedeagus long tubular, cornuti consisting of a bunch of curved spines.




China (Guizhou).


The specific name is derived from Latin trapezoideus (= trapeziform), referring to the shape of the cucullus.