N A T U R K U N D L I C H E S á I N F O R M A T I O N S S Y S T E M

Stigmella macrolepidella (Klimesch, 1978)

(zoological nomenclature: valid name, available)

General information:

Nepticula macrolepidella Klimesch, 1978: 257-259.
Type locality: Greece, Rhodes, Rodini
Type: Holotype : Greece, Rhodes, Rodini, "Mine an Quercus macrolepis, 22.9.1972, Zucht Nr. 1054, Rhodos, Rodini, ex l. 15.10.1972"; in coll. Klimesch, ZSM, Munich

Synonyms, misspellings, wrong determinations, etc.:
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Habit:

Description of adults: Examined: Original description by Klimesch (1978). Wing expanse: 4-4.5 mm. Antennae in nearly 3/4 of forewing lenght, yellowish-grey to greyish-brown, segments not conspicious, in shorter, only slightly more than 1/2 of forewing lenght; scape large, white; frontal tuft in both sexes light yellow to brownish, vertex dark brown to black; collar yellowish-white, in sometimes dark brown; maxillary palpi long, light yellowish, labial palpi shorter; thorax and abdomen yellowish-grey, tegulae yellowish, more or less covered by black scales; legs light yellow, in posttarsi speckled grey; forewing smoothly scaled, ground colour ligth yellow, mostly covered with black-brown scales; ground colour visible on base, along anterior margin and in a postmedial stripe on inner margin; rest of forewing more or less covered by black-brown scales; seldom, more or less darkened specimens occur in both sexes, but always a delicate lightening on base, anterior and inner margin is visible; fringe yellowish-grey, not distinctly separated from rest of wing, around tornus darker grey; hindwings grey with light grey fringe.

Distribution:

Originally, the species has been described from Rhodes, but is now also known from Turkey and Jordan (Nieukerken 2019).

Stages in development:

Description of early stages following Klimesch (1978).

Egg. The egg is laid on the upper side of a leaf of Quercus ithaburensis macrolepis (Kotschy) Hedge & Yalt. In most cases, only a single egg is deposited, but sometimes even 5-10 animals may develop in a single leaf.

Larva. The larva is light yellow with brown head.

Pupe. The pupa is flat with distinctly visible maxillary palpi and coxae. Stigma are visible from abdominal segment I to V. From abdominal segment III onwards, 16 short, small spines each are found dorsally, arranged in rows. The pupa rests in a delicate, translucent, light yellow, oval cocoon.

Mine. Initially, the corridor mine is completely filled with compact frass. Later, the line of frass becomes more unconstrained and leaves more or less broad clear margins on each side.

Anatomy:

genitalia. Vinculum with a shallow notch; uncus bilobed, medially with a shallow notch; arms of gnathos separated; valvae with straight ventral margin, distally with two inwardly bent, sharp protrusions, the lower one prominent; aedeagus prominent, with numerous cornuti, laterally accompanied by smaller and shorter ones; four very large cornuti in lower part, reaching to half length of aedeagus, are much characteristic (Klimesch 1978).

genitalia. Apophyses anteriores elongated, distally enlarged; apophyses posteriores rod-like; signum bursae composed of an inwardly directed, in upper part curved row of prominent spikes; bursa laterally with small areas of short spikes and humps (Klimesch 1978).

Diagnosis:

Following Klimesch (1978), the species belongs to the ruficapitella-group, but differs distinctly from all European species. A closer relationship to one of these species is not apparent. Dark specimens may be mixed up however with Stigmella basiguttella (Heinemann, 1862).

Worth knowing:

Sources:

Klimesch, J. 1978. Beitrag zur Kenntnis der Nepticulidenfauna von Anatolien und der Insel Rhodos (Lepidoptera, Nepticulidae). Tijdschrift voor Entomologie 121: 239-278.
Nieukerken, E. J. van 2019. Nepticulidae and Opostegidae of the world. - URL: http://nepticuloidea.info/ [online 2019.02.01].

Publication data:

history:
Kurz Michael: 2019.04.12
not reviewed

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