Stigmella paniculata Diškus & Navickaitė, Diskus & Navickaite, 2020

Stonis, Jonas R., Remeikis, Andrius, Diškus, Arūnas & Navickaitė, Asta, 2020, Documenting new and little known leaf-mining Nepticulidae from middle and southwestern areas of the Asian continent, Zootaxa 4881 (3), pp. 401-452: 418-419

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Stigmella paniculata Diškus & Navickaitė

sp. nov.

Stigmella paniculata Diškus & Navickaitė   , sp. nov.

( Figs 15 View FIGURES 7–15 , 133–136 View FIGURES 130–136 )

Type material. Holotype: ♂, India, Uttarakhand, Tehri Garhwal Distr., Chamba , 30°20’39”N, 78°23’59”E, 24.viii.2010, A. Diškus and A. Navickaitė, genitalia slide no. AD496 ( ZIN). GoogleMaps  

Diagnosis. S. paniculata   sp. nov. belongs to the Stigmella ruficapitella   group. In the male genitalia, this new species differs from other representatives of the group in the presence of a basal set of very long, transverse cornuti ( Fig. 135 View FIGURES 130–136 ) and apically rounded valva without a conspicuous apical process ( Fig. 136 View FIGURES 130–136 ).

Male. Known from adult in pupal skin; only genitalia are preserved and desribed.

Genitalia ( Figs 133–136 View FIGURES 130–136 ) with capsule 180 µm long, 140 µm wide. Uncus with two very short, well-separated lateral lobes ( Figs 133, 134 View FIGURES 130–136 ). Gnathos U-shaped ( Fig. 133 View FIGURES 130–136 ). Valva ( Fig. 136 View FIGURES 130–136 ) about 130 µm long, with a slightly concave and heavily papillated inner lobe and rounded apex without pronounced apical process. Transtilla with long and slender sublateral processes. Vinculum with a short ventral plate and short triangular lateral lobes ( Fig. 133 View FIGURES 130–136 ). Phallus ( Figs 133, 135 View FIGURES 130–136 ) about 180 µm long, without carinae; vesica with a set of four very long, transverse cornuti basally ( Fig. 135 View FIGURES 130–136 ).

Female. Unknown.

Bionomics ( Fig. 15 View FIGURES 7–15 ). Host plant is unknown (unidentified). Larva is green, with a dark green intestine and pale, yellowish brown head ( Fig. 15 View FIGURES 7–15 ). Larvae mine in leaves in late August and possibly in September. The leaf mine is a slender, contorted gallery; in the initial part, brown-black frass fills the width of the gallery; further on, black frass is deposited in a slender central line ( Fig. 15 View FIGURES 7–15 ). Adults fly in September.

Distribution. Known from a single locality in the western Himalaya (Uttarakhand: Chamba), at the elevation of about 2600 m ( Fig. 1 View FIGURES 1–6 : wHi).

Etymology. The species name is derived from Latin panicula (a cluster), in reference to the set of four very long and slender cornuti in the male genitalia.


Russian Academy of Sciences, Zoological Institute, Zoological Museum