Stigmella azulella Diškus & Stonis, 2017

Stonis, Jonas R., Diškus, Arūnas, Remeikis, Andrius, Karsholt, Ole & Torres, Nixon Cumbicus, 2017, Illustrated review of the leaf-mining Nepticulidae of the central Andes (Peru and Bolivia), Zootaxa 4257 (1), pp. 1-70 : 48-49

publication ID

https://doi.org/ 10.5281/zenodo.556874

publication LSID

lsid:zoobank.org:pub:98E19676-EC03-4026-B4B6-39BEC10B5A05

DOI

https://doi.org/10.5281/zenodo.6035997

persistent identifier

https://treatment.plazi.org/id/90078570-FF8A-2A14-FF07-59AD8B24FD43

treatment provided by

Plazi

scientific name

Stigmella azulella Diškus & Stonis
status

sp. nov.

38. Stigmella azulella Diškus & Stonis , sp. nov.

( Figs 9 View FIGURES 9 – 11 , 25–28 View FIGURES 19 – 28 , 32 View FIGURE 32 , 37 View FIGURE 37 , 92–94 View FIGURES 92 – 94 )

Type material. Holotype: ♂, BOLIVIA: Nor Yungas Province , Coroico, 16°11'49˝S, 67°43'07˝W, elevation 2030 m, mining larvae on leaves of an unidentified plant 25.iv.2014, ex pupa v.2014, field card no. 5164, A. Diškus, genitalia slide no. AD 666♂ ( ZMUC) .

Diagnosis. Belongs to the S. pseudodigitata species group. The combination of blue and purple scales on the forewing, closely juxtaposed caudal processes of gnathos, and specific set of cornuti distinguishes S. azulella sp. nov. from all other Stigmella species, including the most similar and probably closely related S. pseudodigitata .

Male ( Fig. 32 View FIGURE 32 ). Forewing length about 2.1 mm; wingspan about 4.6 mm. Head: palpi pale ochre cream; frontal tuft dark ferruginous; collar and scape golden cream to ochre cream; antenna slightly longer than half the length of forewing; flagellum with 24–26, dark brown to grey with some golden gloss and blue iridescence. Thorax, tegula, forewing and its fringe concolorous, pale brownish grey with strong blue and little purple iridescence (on certain angle of view forewing may look ferruginous with a fuscous apical spot); underside of forewing dark grey, without spots. Hindwing and its fringe pale brownish grey on upper side and underside, with golden gloss but without spots or blue iridescence. Legs dark grey-brown on upper side, grey on underside. Abdomen fuscous grey, metallic glossy on upper side, grey on underside; anal tufts grey cream to cream; genital plates yellowish cream.

Female. Unknown.

Male genitalia ( Figs 92–94 View FIGURES 92 – 94 ). Capsule longer (225 µm) than wide (155 µm). Uncus truncated ( Fig. 97 View FIGURES 97 – 98 ). Gnathos with two closely juxtaposed caudal processes. Valva ( Figs 97, 98 View FIGURES 97 – 98 ) 110–115 µm long, 45–50 µm wide, with very long apical process and slightly bulged inner lobe; transtilla with corners extended into very short sublateral processes ( Fig. 92 View FIGURES 92 – 94 ). Vinculum with short ventral plate and pointed lateral lobes. Phallus ( Fig. 94 View FIGURES 92 – 94 ) 230 µm long, 60– 75 µm wide; vesica with a specific set of cornuti comprised of one large, faceted cornutus, four wide spine-like cornuti and three long digitate cornuti.

Bionomics. Host-plant unknown (remains unidentified). Larvae mine in leaves in April. Leaf-mine as a very long and narrow gallery along the leaf margin. Cocoon orangish beige, almost round; length about 2.5 mm, width about 1.5 mm. Adults fly in May.

Distribution ( Figs 9 View FIGURES 9 – 11 ). This species occurs in the Bolivian Andes ( Bolivia: Nor Yungas Departamento) at altitudes about 2030 m ( Figs 25–28 View FIGURES 19 – 28 ).

Etymology. The species name is derived from Spanish azul (blue) in reference to the numerous distinctive blue and purple scales on the male forewing.

ZMUC

Zoological Museum, University of Copenhagen

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Lepidoptera

Family

Nepticulidae

Genus

Stigmella

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