Eukiefferiella clypeata

Author: (Kieffer, 1923)

Exuviae 2.7-3.7mm long (m=3.2mm, n=10) (052-1.jpg).
Cephalothorax: Thoracic horn 165-220µm long (m=192µm, n=13), broadest at base, tapered to apex, more strongly tapered over the basal half (052b.jpg). Length horn base 0.49-0.61x length horn (m=0.53, n=13); ThR (base) 1.5-2.1 (m=1.8, n=13). Median antepronotal setae 1,2: 150-175; 65-95µm long; precorneal setae 1-3: 165-210; 80-120; 55-60µm long; dorsocentral setae 1-4: 90-140; 40-55; 65-105; 20-40µm long (n=4). Thorax flat granulate. Pearl row absent.
Abdomen: Hook rows on tergites very widely separated medially and few in number (3-6 on each side). Tergites II-VIII with a single posterior row of dark strong teeth, separated by about their basal width medially, closer and more elongate laterally; the rest of the tergite covered with small shagreen points, marmorate (052c.jpg). Posterior teeth III 23-25; IV 23-25µm long (n=3). Segment VIII with two strong lateral setae.
Anal segment: Anal lobe ratio 2.0-2.5 (n=4). Anal lobes without fringe. Length of anal macrosetae 0.91-1.1x length of the anal lobe (n=3) (052d.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 705: Orthocladiinae 117 Eukiefferiella of the Text Key.

Widespread in Europe (not Scandinavia).
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Northern and montane lakes and streams; southern streams.