Larsia curticalcar

Author: (Kieffer, 1918)

Diagnosis (n=4)
Exuviae 3.5-4.1mm long (019-2.jpg).
Cephalothorax: Thoracic horn 225-265µm long, elongate, broad, curved near base, toothed and with its plastron plate offset apically, surrounded by a clear rim; ThR 3.5-3.8. Plastron plate maximum diameter 30-45µm; rim maximum diameter 50-55µm. Respiratory atrium thin walled and much diverticulated (019e.jpg), diverticuli well-separated, the median 'channel' broad and sinuous. Thorax smooth. Thorax comb of 9-13 strong teeth.
Abdomen: Tergite I with a median mark. Abdominal armament of minute points arranged in short transverse slightly curved rows. Abdominal tergites with a narrow anterior and posterior dark transverse band joined on each side of mid-line by a diagonal band (approximating posteriorly), leaving a pear-shaped pale area medially (019g.jpg). Lateral taeniae on segments VII-VIII 4,5; anterior lateral taenia of segment VII at 0.52-0.62 of length segment VII.
Anal segment: Anal lobes small-toothed externally and internally (019f.jpg). Anal lobe ratio 3.3-3.9. Insertion of anterior anal taenia at 0.35, 0.36 of lobe length.
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 78: Tanypodinae 64 Larsia of the Text Key.

Widespread in Europe (not Scandinavia) and circum-Mediterranean.
(For more information see module IdentifyIt – file: Other subfamilies).

Ecological notes
Lakes, peat pools and seepages; larvae from Sphagnum.