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

Adela kuznetzovi Kozlov, 1987

(zoological nomenclature: valid name, available)

General information:

Adela kuznetzovi Kozlov, 1987: 60.
Type locality: Baltic region
Type: Holotype : Baltic amber, Eocene, Ap-1484, coll. Palanga Amber Museum, Lithuania

Synonyms, misspellings, wrong determinations, etc.:
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Taxonomic note: The identity of the below described female is supported only by the extremely long antennae. Unfortunately, there has been no opportunity to reinvestigate the male holotype in the Palanga amber museum, since the original description lacks some important characters. Therefore, also the assignment to the genus Adela Latreille, 1796 remains doubtful, since only the male antennae bear the characteristic, clamp-like structures.

Habit:

: Holotype, in coll. Palanga Amber Museum, Lithuania : Baltic region, Baltic amber, Prussian, Eocene, Lutetian, in coll. Michael Kurz : Baltic region, Baltic amber, Prussian, Eocene, Lutetian, in coll. Michael Kurz , head: Baltic region, Baltic amber, Prussian, Eocene, Lutetian, in coll. Michael Kurz
Picture from: © Kozlov 1987
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view

Description of adults: Examined: Original description (), 1 . Forewing length: 6 mm, 6.3 mm. Head covered with long, erect, hair-like scales; face smoothly scaled, golden shining; eyes small, semiglobular; maxillary palpi vestigial, probably 3-segmented; labial palpi well developed, hanging, 3-segmented; segments app. 100, 350 and 200 µm long (from basis); medial segment with several long, distant bristles; terminal segment smoothly scaled; proboscis well developed, long; antennae filiform, extremely long, in nearly 3-times, respectively, in app. 2.2-times the forewing length; wings of normal shape; foretibia with long epiphysis, midtibia with a pair of long spurs at distal end; hindtibia with a pair of long spurs each at app. 0.6 of tibial length and at distal end; abdomen tapering at distal end in .

Distribution:

The species is known only from Baltic amber from the Lutetian period of the Eocene.

Biology:

The species is a member of the amber wood biocenosis. Since the eyes of males are not enlarged, it is unclear, wether this was a heliophilous species, like many recent species of the family.

Stages in development:

The early stages are unknown.

Anatomy:

     
, venation of forewing: Baltic region, Baltic amber, Prussian, Eocene, Lutetian, in coll. Michael Kurz      
Picture from: Kurz Michael
Detailed view
     

Venation. in only hardly discernable; forewing with five R-branches to costa, partly free, in right forewing of R3 and R4 on short stem , in right forewing of R2 and R3 on short stem; in radial cell and medial stem distinct; wing scales elongate-oval and finely denticulated at tip.

Genitalia. Long ovipositor, tip with piercing oviscapt.

Diagnosis:

From all Baltic amber adelids, A. kuznetzovi has by far the longest antennae, which are also in the female more than two-times the forewing length. We also do not know any recent European species with similarly long antennae in the female.

Phylogeny: The assignment to the adelids, especially to the subfamily Adelinae, is not only supported by the long antennae, but also by the 3-segmented maxillary and labial palpi. Like in recent members of Adela, the former are vestigial only and thus distinguish the specimens distinctly from the genus Adelites Rebel, 1934, where the maxillary palpi are well developed. If A. kuznetzovi, however, is a true Adela, can only be answered by a reinvestigation of the type specimen, since only males of that genus bear those characteristic, clamp-like structures on the basal antennal segments.

Worth knowing:

Sources:

Kozlov, M. V. 1987. New moth-like Lepidoptera from the Baltic amber. Translated from Palaeontological Journal (4): 59-68 [56-65].

Publication data:

history:
Kurz Michael: 2016.02.04
Kurz Michael: 2016.02.16
Kurz Michael: 2016.03.10
Kurz Michael: 2016.03.31
Document reviewed by:
not reviewed: 2016.03.31
Document released by:
Kurz Michael: 2016.03.31

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