Elachista quadrata Meyrick

Sruoga, Virginijus & Kus, Arūnas Di Š, 2006, Redescription of the type specimens of the Elachista freyerella species-group (Lepidoptera: Elachistidae: Elachistinae) from India and Sri Lanka, Zootaxa 1350, pp. 33-43: 38-40

publication ID

http://doi.org/ 10.5281/zenodo.174512

publication LSID

lsid:zoobank.org:pub:65FFF1EE-9BEA-47A7-9C17-64F7DD65D919

persistent identifier

http://treatment.plazi.org/id/03F98787-FFFC-FFDB-EB75-C67D1E063D34

treatment provided by

Plazi

scientific name

Elachista quadrata Meyrick
status

 

Elachista quadrata Meyrick  

( Figs. 4 View FIGURE 4 , 8, 9 View FIGURES 8 – 9 )

Elachista quadrata Meyrick, 1932: 217  

Material examined: &, labelled: rounded white label with red margin “Holo- | type ”; white rectangle “ Surat | Bombay | RM. 17.12.28; Elachista   | quadrata   | 1 / 1 Meyrick | E. Meyrick det. | in Meyrick Coll.; quadrata Meyr.   ; B. M. & | Genitalia slide | No. 29578 ”. In BMNH.

Male. Unknown.

Female. Forewing length 3.5 mm; wingspan 7.8 mm. Head: Neck tuft, vertex and frons mottled due to grey-brown tips of whitish grey scales; clypeus white; labial palpus white above, fuscous below; flagellum distinctly ringed by whitish and dark brown scales.

Thorax: Forewing dark brown; proximal part of wing lighter and mottled by sparse brown scales on greyish ground; wing distinctly darker beyond middle. Narrow, transverse, antemedial fascia white and slightly oblique. Costal and tornal spots white; costal spot slightly closer to apex of wing. Hindwing dark brown.

Female genitalia ( Figs. 8, 9 View FIGURES 8 – 9 ). Papillae anales triangular, with short, sparse setae. Apophyses posteriores conspicuously longer than apophyses anteriores. Abdominal segment VIII narrow. Ostium bursae with deep U-shaped incision. Antrum rather short, approximately as long as apophyses posteriores, with few longitudinal folds. Inner side of antrum and dorsal wall with minute spines. Anterior margin of sternite VII reinforced. Colliculum wide and long, more sclerotized on one side. Corpus bursae without internal spines. Signum strongly bent at almost 100 o, with two strong thorns and a few smaller teeth.

Distribution. India ( Fig. 4 View FIGURE 4 ).

Biology. The holotype was captured in late December; no other information available.

Diagnosis. E. quadrata   differs from all other known species in the E. freyerella   species-group by the short antrum, the peculiar shape of the signum, and by absence of internal spines in the corpus bursae.

Remarks. In BMNH there is a second specimen collected in India (Mysore) and identified by E. Meyrick as E. quadrata   , but we have not examined it.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Lepidoptera

Family

Elachistidae

Genus

Elachista

Loc

Elachista quadrata Meyrick

Sruoga, Virginijus & Kus, Arūnas Di Š 2006
2006
Loc

Elachista quadrata

Meyrick 1932: 217
1932