72 research outputs found

    Elachista tuberella Sruoga, 2008, sp. nov.

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    Elachista tuberella sp. nov. Figs. 2, 7, 8 Type material. Holotype: ɗ, Nepal: 6800 ’ [~ 2070 m], Kathmandu Dist., Kakani, 1–2.vi. 1983; mixed secondary scrub; Allen, Brendell, Robinson, Tuck, Brit. Mus. 1983 – 222; genitalia slide no. 29588 (BMNH). Paratypes: 1 ɗ, data as holotype; genitalia slide no. 29590 (BMNH); 1 ɗ, Nepal 15 km SW Kathmandu Hattiban, pine forest 1500 m., 2.iii. 1995, K. Mikkola & A. Wikberg leg.; genitalia slide no. 1512 (MZH); 1 ɗ, same data; genitalia slide no. 2074 (MZH). Condition of the type material. Relatively well-preserved. Holotype with incompletely spread wings, the terminal fringe scales of the forewing are slightly abraded, and the left antenna is broken near the middle. Although the forewings are somewhat rubbed in the paratypes, the pattern is clear. Diagnosis. In wing pattern the species is hardly distinguishable from many others. In male genitalia E. tuberella very closely resembles E. deficiens Meyrick, known from Sri Lanka (Meyrick 1922; Sruoga & Diskus 2006). The main differences between E. tuberella and E. deficiens are: (1) the phallus of E. tuberella has a hump at 1 / 2 and is curved at apical 1 / 4; in E. deficiens the hump is at apical 1 / 3 and phallus is curved at apical 1 / 3; (2) the incision between the juxta lobes of E. tuberella is Y-shaped; in E. deficiens it is V-shaped. Description. Male (Fig. 2). Forewing length 3.2–3.8 mm, wingspan 6.9–8.2 mm. Head: Vertex and neck tuft mottled due to grey-brown tips of whitish scales; frons whitish with some metallic lustre; labial palpus white with some shine above, brownish below; antenna grey-brown, indistinctly ringed. Thorax: Tegulae and forewings greyish brown, mottled by brownish grey tipped scales. Blackish brown tipped scales beyond the middle of wing forming two irregular spots near the costal and tornal margins. Same scales present in apical part, where they form an elongate spot. Fringe scales grey except at apex whitish, fringe line blackish brown. Hindwing grey-brown, its fringe scales somewhat paler. Male genitalia (Figs. 7, 8). Uncus lobes outwardly produced and curved, narrowed towards tips; ventral surface covered with mixture of short and thick, and long and slender setae. Basal arms of gnathos reinforced, spinose knob large, subquadrate. Valva broadest in basal part; sacculus weakly concave medially, distally with prominent, stout spine; cucullus rounded; basal fold of costa extended to 2 / 3 of valva, where it meets distal fold forming a small hump. Medial margin of juxta lobes strongly sclerotized, with few setae distally, incision between lobes wide. Digitate process weakly expanded just before middle, distally slightly dilated, inner surface with short and thin setae. Vinculum with long and narrow saccus. Phallus slightly shorter than valva; medially with triangularly shaped hump, strongly curved at apical 1 / 4. Female. Unknown. Biology. Adults were collected in mixed secondary scrub in early June and in a pine forest in early March. Larval biology is unknown. Distribution. Nepal, Kathmandu District. Remarks. This species belongs to the E. freyerella species group sensu Kaila (1999 b). Elachista tuberella is the first species of this group recorded from Nepal. Etymology. The species name is derived from the Latin tuber (protuberance, excrescence) in reference to the peculiar hump in the middle of the phallus.Published as part of Sruoga, Virginijus, 2008, Three new species of Elachista Treitschke (Lepidoptera: Elachistidae: Elachistinae) from Nepal, pp. 59-66 in Zootaxa 1821 on pages 62-64, DOI: 10.5281/zenodo.18302

    Elachista ievae Sruoga, 2008, sp. nov.

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    Elachista ievae sp. nov. Figs. 1, 4–6 Type material. Holotype: ɗ, Nepal: 5600 ’ [~ 1700 m], Kathmandu Dist., Godawari, 24.v.– 6.vi. 1983; mixed primary forest; Allen, Brendell, Robinson, Tuck, Brit. Mus. 1983 – 222; genitalia slide no. 29589 (BMNH). Condition of the type material. The single specimen is in fair condition, the wings are partly spread. The head (mostly frons) and terminal fringe scales of forewing are slightly abraded. Diagnosis. In male genitalia the new species is comparable to E. lambeseella Nielsen & Traugott-Olsen, known from Algeria (Nielsen & Traugott-Olsen 1987) and Tunisia (Traugott-Olsen 1995). It is distinguishable by the following differences: (1) the uncus lobes in E. ievae is shorth; in E. lambeseella they are longer and more slender; (2) the cucullus in E. ievae is large and rounded; in E. lambeseella it more elongate; (3) the phallus in E. ievae is without carina; in E. lambeseella it is with elongate, dentate carina. Description. Male (Fig. 1). Forewing length 4 mm, wingspan 8.7 mm. Head: Frons light yellowish brown, upper scales in holotype rubbed but lowermost scales with some metallic sheen; neck tuft yellowish brown, scales nearest to thorax blackish brown; labial palpi slightly longer than width of head, yellow-white, with weak metallic sheen both from upper and under sides; antennal scape blackish brown but underside yellow-white; pecten yellow-white, flagellum clearly ringed by blackish brown and greyish white scales, tip whitish. Thorax: Tegulae and forewing blackish brown; forewing markings white, with weak lustre and some yellowish tint, consisting of a slightly outwardly oblique fascia at about 1 / 3, small triangular costal spot at about 2 / 3 and similar one but smaller on dorsum just before it. Additionally a small elongated spot consisting of raised black-brown scales is just beyond fascia, slightly below from fold and a few same scales just before the fascia. Fringe scales dark brown, line on fringe scales not distinct in holotype. Hindwing dark brown, its fringe scales similar. Abdomen blackish brown above, whitish with weak yellowish tint below, apical tuft paler than upperside of abdomen. Male genitalia (Figs. 4–6). Uncus lobes short, rounded apically, with long and thick setae along lateral margins. Anterior margin of tegumen deeply incised and reinforced, with very strong spiniform sclerotization in centre of incision. Gnathos large, elongate, but in genitalia slide appearing rounded due to apical part strongly turned dorsad. Vinculum with strongly sclerotized central ridge, without saccus. Valva with broadened, rounded cucullus, costa slightly convex. Juxta lobe wide, strongly produced laterally. Digitate process short and wide, distally setose. Phallus gradually tapering, strongly bent somewhat beyond middle; coecum well developed, medially with two rounded, strongly sclerotized lobes; no cornuti. Female. Unknown. Biology. The single known specimen was collected in a mixed primary forest. Larval biology is unknown. Distribution. Nepal, Kathmandu District. Remarks. Based on male genital characters, the new species is affiliated with the E. gleichenella species group. The phallus of E. ievae is without carina but other traits of male genitalia agree well with the concept of the E. gleichenella species group. E. ievae is the only species of this group recorded from Nepal. Etymology. This species is named after my daughter, Ieva.Published as part of Sruoga, Virginijus, 2008, Three new species of Elachista Treitschke (Lepidoptera: Elachistidae: Elachistinae) from Nepal, pp. 59-66 in Zootaxa 1821 on pages 60-62, DOI: 10.5281/zenodo.18302

    Elachista obtusella Sruoga, 2008, sp. nov.

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    Elachista obtusella sp. nov. Figs. 3, 9, 10 Type material. Holotype: ɗ, Nepal 15 km SW Kathmandu Hattiban, pine forest 1500 m., 2.iii. 1995, K. Mikkola & A. Wikberg leg.; genitalia slide no. 1513 (MZH). Condition of the type material. The single specimen is in rather fair condition, the wings are spread; the frons is slightly abraded; the right antenna and right labial palpus are broken. Diagnosis. In male genitalia E. obtusella resembles E. stichospora Meyrick, known from India (Meyrick 1932; Sruoga & Diskus 2006). The main differences in male genitalia between E. obtusella and E. stichospora are: (1) the sacculus of E. obtusella is almost straight; in E. stichospora it is medially convex; (2) the saccus of E. obtusella is shorter and wider; (3) the phallus of E. obtusella is nearly as long as valva, curved at base and apical 1 / 3, apex without triangular tooth; in E. stichospora phallus conspicuously longer than valva, curved at basal and apical 1 / 6, apex with small triangular tooth; (4) the vesica of E. obtusella is without cornutus; vesica with an arrow-shaped cornutus in E. stichospora. Description. Male (Fig. 3). Forewing length 3.4 mm, wingspan 7.2 mm. Head: Vertex and neck tuft mottled due to grey-brown tips of whitish scales; frons whitish with some metallic lustre; labial palpus whitish above, fuscous below; flagellum brownish, indistinctly ringed. Thorax: Forewing pale, greyish brown, mottled by brownish grey tipped scales. Dark brown scales beyond the middle of wing forming two irregular spots near the costal and tornal margins. Same scales present in apical part, where they form an elongate spot. Fringe scales grey except at apex white, fringe line dark brown. Hindwing dark brown, its fringe scales somewhat paler. Male genitalia (Figs. 9, 10). Uncus lobes curved, basally bulbous, narrowed towards tip; ventral surface covered with mixture of short-thick, and long-slender setae. Basal arms of gnathos reinforced, spinose knob large and oval. Valva about 5 times longer than wide; sacculus basally straight or slightly expanded, distally with stout spine; cucullus neither expanded nor produced towards costa; basal fold of costa extended to 2 / 3 of valva, where it meets distal fold forming a distinct hump. Digitate process basally widened. Medial margin of juxta lobes strongly sclerotized; lobes rounded, with few short setae. Vinculum large, produced into long parallel-sided and blunt tipped saccus. Phallus long and slender, almost as long as valva, gently arcuate in apical 1 / 3; apex tapered; vesica without cornuti or spines. Female. Unknown. Biology. The single known specimen was collected in a pine forest in early March. Larval biology is unknown. Distribution. Nepal, Kathmandu District. Remarks. This species belongs to the E. freyerella species group sensu Kaila (1999 b). Elachista obtusella is only the second species of this group recorded from Nepal. Etymology. The species name is derived from the Latin obtusus (blunt, dull) in reference to the peculiarly blunt apex of the saccus.Published as part of Sruoga, Virginijus, 2008, Three new species of Elachista Treitschke (Lepidoptera: Elachistidae: Elachistinae) from Nepal, pp. 59-66 in Zootaxa 1821 on page 64, DOI: 10.5281/zenodo.18302

    A new species of Elachista Treitschke, 1833 (Lepidoptera, Elachistidae, Elachistinae) from China, with identification keys to the Asian species of the Elachista saccharella species group

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    A new species, Elachista olekarsholti sp. nov., is described from Henan, China. The habitus and male genitalia are diagnosed and illustrated in detail. This is the first record of the Elachista saccharella species group in China. Identification keys to the Asian species of Elachista saccharella species group, based on male and female genitalia, are provided

    Nauji duomenys apie retas vabalų (Coleoptera) rūšis Vilniaus ir Trakų rajonuose (pietryčių Lietuva)

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    Pateikti duomenys apie 3 retas vabalų rūšis (Carabus coriaceus L., C. violaceus L., Necydalis major L.), aptiktas Vilniaus ir Trakų rajonuose. Kiekvienai rūšiai nurodytos tikslios sugavimo vietos, datos ir individų skaičius. Rūšys Carabus coriaceus ir Necydalis major yra įrašytos į Lietuvos raudonąją knygą, o N. major ir į Kertinių miško buveinių indikatorinių rūšių sąrašąVytauto Didžiojo universitetasŠvietimo akademij

    The Elachistinae (Lepidoptera: Gelechioidea: Elachistidae) of Ecuador with descriptions of five new species

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    The occurrence of seven species of Elachistinae is reported from Ecuador, including the descriptions of five new species: Elachista adunca sp. n., E. laxa sp. n., E. lata sp. n. and E. phiala sp. n. One species is documented, but not named pending the availability of additional material. The new species are diagnosed and illustrated with photographs of the adults and genitalia. Elachista saccharella (Busck) is reported for the first time from Ecuador and a new host plant is recorded for this speciesVytauto Didžiojo universitetasŠvietimo akademij

    Pakartotinis dviejų Meyriko Elachistidae (Lepidoptera: Gelechioidea) tipų iš Indijos ir Šri Lankos aprašymas

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    Bibliogr. str. galePakartotinai aprašyti dviejų Elachistidae rūšių (Elachista brachyplectra Meyrick ir E.endobela Meyrick) tipai. Pirmą kartą pavaizduotos taksonomijai svarbios patinų genitalijų morfologinės struktūrosVytauto Didžiojo universitetasŠvietimo akademij

    Three new species of Elachista Treitschke (Lepidoptera: Elachistidae: Elachistinae) from Nepal

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    Three new species of Elachista Treitschke, E. ievae sp. nov., E. tuberella sp. nov. and E. obtusella sp. nov., from Nepal are described and illustrated. E. ievae is placed in E. gleichenella species group, E. tuberella and E. obtusella are placed in E. freyerella species groupVytauto Didžiojo universitetasŠvietimo akademij

    FIGURES 7 – 8 in Three new species of Elachista Treitschke (Lepidoptera: Elachistidae: Elachistinae) from Nepal

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    FIGURES 7 – 8. Elachista tuberella, male genitalia, holotype. 7, general view (phallus removed); 8, phallus. Genitalia slide No. 29588 (BMNH). Scale bar 0.1 mm
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