Tactusa jeppeseni Fibiger
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|Tactusa jeppeseni Fibiger|
Tactusa jeppeseni Fibiger , new species
( Plate 3, figure 1; female genit. plate 22, figure 5)
Material examined. Holotype: female, NE India, Assam, Khasis , -. viii.1896, Nat. Coll, coll. BMNH.
Paratypes: 1 female with same data as holotype, genit. prep. 3762 M. Fibiger, coll. BMNH .
Taxonomic notes. T. jeppeseni is a member of the T. nieukerkeni species-group, all of which have a blackish triangular or quadrangular patch between the antemedial and postmedial lines; the typical Tactusa features listed under the female genitalia of the species-group and individually for each species.
Diagnosis. Imago (external). Wingspan: 12 mm.
Crosslines: only subterminal and terminal lines indicated; former inwardly outlined by light yellow, latter by black interneural spots.
Reniform stigma: well marked, white, outlined black.
Hindwing: dark grey, with extremely faint discal spot.
Underside: unicolorous grey.
Male genitalia. Unknown.
Female genitalia. Ovipositor: quadrangular with rounded corners.
Posterior apophyses: much longer than anterior apophyses and ovipositor.
Anterior apophyses: much shorter than 8 th abdominal segment.
8 th abdominal segment: long.
Ostium: slightly displaced to left; positioned medially in 8 th segment (apo.)
Antrum: very long, coiled, as long as ductus bursae (apo.).
Ductus bursae: membranous, relatively short; shorter than width of corpus bursae (apo.).
Appendix bursae: arising medially between ostium and corpus bursae.
Corpus bursae: ovoid.
Signum: cross shaped.
Distribution. Known only from NE India, Assam.
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