Dishkeya ursipedella Diškus, Mey & Stonis, 2022

Stonis, Jonas R., Diškus, Arūnas & Mey, Wolfram, 2022, Dishkeya, a recently described endemic Tischeriidae genus, now discovered in Colombia, Zootaxa 5214 (2), pp. 285-293 : 288-292

Dishkeya ursipedella Diškus, Mey & Stonis , sp. nov.

urn:lsid:zoobank.org:act:F9D88E72-8287-4E27-BB3E-0DCDB7FBC57A

( Figs 1, 2 , 11–30 )

Type material. Holotype: ♂, COLOMBIA: Cundinamarca, Choachi (waterfall La Chorrera ), 4°35′33″N, 73°57′36″W, elevation 2500 m, 1–2.ii.2017, leg. Wolfram Mey, genitalia slide no. AD1119 ( MfN / UNC) . Paratype: 1 ♂, same label data as holotype, genitalia slide no. AD1120 ( MfN) .

Diagnosis. Externally, this new species can be confused with some other dark-coloured species. In the male genitalia, the unique shape of the five-clawed carinae ( Fig. 24 ), slender lateral processes of the phallus ( Fig. 24 ), spinose uncus ( Figs 15, 16 , 23 ), and unique dorsal process of the valva with a basal arc ( Figs 18, 19 ) distinguish D. ursipedella sp. nov. from all known congeneric species.

Male ( Figs 13, 14 ). Forewing length 3.7–4.0 mm; wingspan 8.0–8.7 mm (n = 2). Head: frons and palpi pale grey; pecten small, slender, grey; frontal tuft and collar comprised of lamellar scales; frontal tuft brown-grey, distally pale grey, basally blackish grey; collar grey, distinctive; antenna longer than one half the length of forewing; flagellum brown-grey; sensillae 4–5 times longer that the width of the flagellum. Tegula and thorax covered with brown-grey scales. Forewing brown-grey, sparsely speckled with some dark brown scales; fringe grey, with an indistinctive fringe line; forewing underside dark brown, without spots or androconia, except for blackish grey special scales along costal margin at the forewing base. Hindwing dark brown-grey on upper side and underside, without androconia; fringe grey. Legs blackish grey on upper side, pale grey to grey cream on underside. Abdomen brown-grey on upper side, pale grey, glossy on underside; genital plates contrasting with the colour of the abdomen, cream; anal tufts lateral, almost merging, comprised of long brown scales.

Male genitalia ( Figs 15–30 ) with capsule 480–490 µm long, 240–280 µm wide. Uncus ( Figs 15, 16 , 25 ) comprised of two relatively long and slender lateral lobes and short, rounded median lobes; the latter covered with thickened spines distally. Socii ( Figs 23 , 25 ) large, weakly paired or non-paired, with very little spines mostly on the medial fold ( Fig. 25 ). Valva ( Figs 18, 19 , 21 , 26–28 ) ca. 315 µm long (excluding the basal process); ventral lobe with a basal fold ( Fig. 27 ); dorsal process ( Figs 18, 19 , 22 , 26, 28 ) greatly developed but at a distance from the ventral lobe and with a basal arc ( Figs 19 , 26 ); there is also a short but wide lobe-like process in between the dorsal and ventral lobes ( Figs 22 , 28 ). Anellus absent. Vinculum relatively large, rounded or triangular distally ( Figs 19 , 21 , 29, 30 ). Phallus ( Fig. 24 ) 280–305 µm long, wide basally and apically, constricted medially, with slender lateral processes and well-developed five-clawed carinae.

Female. Unknown.

Bionomics ( Figs 11, 12 ). The host plant is unknown (see Discussion). Adults fly in February. Otherwise, the biology is unknown.

Distribution. This species is known from a single locality in Colombia (Choachi, Cundinamarca, near La Chorrera waterfall), at an altitude of about 2500 m.

Etymology. The species name is derived from Latin ursus (a bear) and pedis (a foot) in reference to the distinctive claw-like carinae of the phallus in the male genitalia.

Figures

FIGURES 1–9. Socii and phallus of Dishkeya Stonis. 1, 2, D. ursipedella Diškus, Mey & Stonis, sp. nov.; 3, 4, D. bifurcata (Braun); 5–7, D. gouaniae (Stonis & Diškus); 8, 9, D. gothica Diškus & Stonis

FIGURES 10–12. Distribution map and habitats. 10, currently known distribution of the Dishkeya species; 11, 12, habitats of D. ursipedella Diškus, Mey & Stonis, sp. nov., in Choachi, Cundinamarca, near La Chorrera waterfall, at an altitude of about 2500 m

FIGURES 13–20. Dishkeya ursipedella Diškus, Mey & Stonis, sp. nov. 13, 14, male adult, holotype; 15, male genitalia, holotype, genitalia slide no. AD1119, uncus, lateral view; 16, same, medial lobes of uncus, ventral view; 17–20, same, capsule with phallus inside, lateral view (MfN/UNC)

FIGURES 21–24. Dishkeya ursipedella Diškus, Mey & Stonis, sp. nov., holotype, genitalia slide no. AD1119. 21–23, capsule with phallus removed; 24, phallus, ventral view (MfN/UNC)

FIGURES 25–28. Dishkeya ursipedella Diškus, Mey & Stonis, sp. nov., details of male genitalia, slide no. AD1119, holotype. 25, ventral view; 26, lateral view; 27, 28, ventral view (MfN/UNC)

FIGURES 29, 30. Dishkeya ursipedella Diškus, Mey & Stonis, sp. nov., male genitalia, capsule with phallus inside. 29, holotype, slide no. AD1119; 30, paratype, slide no. AD1120 (note the slightly different angle of the view) (MfN/UNC)