Form described by Langton, 1991
Diagnosis
Exuviae 5.7-8.5mm long (m=6.6, n=50)
Cephalothorax: Thoracic horn cylindrical, with a transversely oval to circular plastron plate filling the horn apex, which is joined to the broad brown respiratory atrium by a broad but short neck. Thoracic horn with coarse teeth (007f.jpg). Thoracic horn 430-645µm long (m=534µm, n=90); ThR 3.01-5.25 (m=4.05, n=95). Breadth respiratory atrium : breadth horn = 0.81-0.99:1 (m=0.9:1, n=85). Plastron plate B : Th B 0.66-0.94:1 (m=0.8:1, n=33). Respiratory atrium nearly as wide as the horn (Breadth atrium : breadth horn = 0.81-0.99:1, m=0.9:1).
Abdomen: Points on tergite IV similar in size to those on VIII. Anterior lateral taenia of segment VII at 0.46-0.60 of length segment VII (m=0.53, n=46). Abdominal segments with distinct brown anterior edging. Segment VIII extended posteriorly on each side for over one fifth its median length.
Anal segment: Anal lobes Procladius-type (007c.jpg). Anal lobe ratio 1.74-2.37 (m=1.9, n=46).
Form keys out at Page 25: Tanypodinae 11 Procladius of the Text Key.
Note: This form keys out with Procladius sagittalis (Kieffer) and Procladius signatus (Zetterstedt). Both species differ in the internal reticulation of the respiratory atrium.
Distribution
SW Palaearctic.
(For more information see module IdentifyIt – file: Other subfamilies).
Ecological notes
Stagnant water.