Eukiefferiella ancyla

Author: Svensson, 1986

Exuviae 2.5-2.9mm long (n=4).
Cephalothorax: Thoracic horn 82-125µm long (n=4), broadest at base, tapered to apex, more strongly tapered over the basal half. Length horn base 0.67-0.69x length horn (n=4); ThR (base) 1.6-2.4 (n=4). Median antepronotal setae 1,2: 45-50; 30-45µm long (n=3); precorneal setae 1-3: 50; 20-25; 10-15µm long (n=2); dorsocentral setae 1-4: 13-15; 15; 13-15; 15-40µm long (n=2).
Abdomen: Hook rows on tergites broken medially, hooks III 8/9-11/12, IV 9/12-12/15, V 8/9-10/13 (n=4). Length posterior teeth tergites III and IV 3µm long (n=2). Segment VIII with all lateral setae very thin, short, inconspicuous. Tergites II-V nearly covered with small points except for the adhesion marks; VI-VIII progressively less extensively armed (no anterior transverse band of strong points).
Anal segment: Anal lobe ratio 2.0-2.3 (n=3); fringe and anal macrosetae absent (052l.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 702: Orthocladiinae 114 Eukiefferiella of the Text Key.

Widespread in Europe.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Streams: the larva is phoretic on Ancyla.