Semnostola grandaedeaga Zhang and Wang, 2006

Xu, Zhang & Wang, Shuxia, 2006, A study of the genus Semnostola Diakonoff from China with the description of a new species (Lepidoptera: Tortricidae: Olethreutinae), Zootaxa 1283 (1283), pp. 37-45 : 42-44

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Semnostola grandaedeaga Zhang and Wang

sp. nov.

Semnostola grandaedeaga Zhang and Wang , sp. nov.

( Figs. 4, 8, 11)

Diagnosis. Semnostola grandaedeaga sp. n. is similar to S. trisignifera ( Kuznetzov, 1970) in the male genitalia. It can be differentiated from the latter by the distinctive tornal blotch, which is represented by a large, dark brown triangle; its broad aedeagus, 0.8 as wide as the valva; and the corpus bursae with one signum. In S. trisignifera (Kuznetzov) the tornal blotch is indistinct and represented by some broken streaks and spots; the aedeagus is slender, 0.2 times as wide as the valva; and the corpus bursae has two signa.

Description. Adult ( Fig. 4): Wing expanse 17.0–19.0 mm. Vertex and antenna brown. Frons white. Labial palpus with second segment yellow, third segment shorter than second, brown, slightly upturned. Thorax and tegula brown. Forewing with upperside ground color yellowish brown to grayish brown; basal and subbasal fasciae not forming distinct basal patch; median fascia near midwing broken by brown scales into small proximal dots and elongate oblong spots on dorsal area; postmedian fascia indicated by four white spots; tornal blotch large triangular and dark brown; ocellus dark brown, formed by broad transverse gray lines; costa with nine strigulae from base to apex; each strigula with a gray silvery stria extending obliquely; srigulae one to four distributed between base of the wing and the point where Sc meets costa, separated from each other by dark brown spots; pairs of strigulae one and two occupying interfascial position, between basal and subbasal fascia, situated before 1/8 forewing length, extending backward to base of dorsum; pairs of strigulae three and four occupying interfascial position between subbasal and median fascia, with striae extending backward to 1/3 length and middle of dorsum, respectively, broken by dark spots at midwing; strigulae five and six approximate at distal margin of median fascia, appearing as a single paired strigula; strigula five single, with gray stria extending to R 5 at termen; strigula six single, with stria extending to termen, broken by dark spots near costa; the distal three pairs distributed between pairs of veins R 1 ­R 2, R 2 ­R 3 and R 3 ­R 4, respectively, bordered by reddish brown and dark brown, separated from each other by dark brown spots; striae arising from them often becoming confluent, and extending obliquely to termen between R 5 and M 1; cilia brown; underside light yellow. Hindwing with upperside and cilia brown; underside uniformly grayish brown. Legs yellowish, tarsi with dark brown rings. Abdomen with upperside ground color dark brown, underside yellow.

Male genitalia ( Fig. 8): Uncus undeveloped. Socius triangular, large, hairy. Valva slender, elongately subtriangular, gradually tapering to tip; length of basal cavity 0.25 x that of valva; cucullus dorsally slightly straight, with well­developed long hairs at dorsal margin and a terminal pollex; sacculus hardly projecting, moderately setose. Aedeagus broad, gradually tapering to tip, strongly sclerotized, width 0.8 x that of valva; cornuti absent.

Female genitalia ( Fig. 11): Papilla analis long and narrow, anterior half narrower than posterior half. Apophysis posterioris shorter than apophysis anterioris. Sterigma broad, liplike, sclerotized. Antrum indistinct. Colliculum absent. Ductus bursae longer than corpus bursae. Corpus bursae broadly pear­shaped; signum small, thorned, placed near opening of corpus bursae, surrounded by scattered scobination.

Distribution. China (Zhejiang).

Etymology. The specific name is derived from the Latin prefix grand ­, meaning broad, and aedeagus, the intromittent organ, referring to the broad aedeagus.

Type material: Holotype, male, CHINA: Mt. Tianmu (30°26´N, 119°34´E), Zhejiang Province, 1500 m, 18.viii.1999 (Houhun Li), genitalia slide No. ZX 05177 GoogleMaps . Paratypes, 13 males, 2 females, same data as for holotype GoogleMaps ; 4 males, same data as for holotype except 1140 m, 17.viii.1999 GoogleMaps .