Paracladius alpicola

Author: (Zetterstedt, 1850)

Diagnosis (Material in coll. ZSM; in part after Hirvenoja, 1973a - in italics)
Exuviae 3.9-4.9mm long (m=4.2mm, n=10).
Cephalothorax: Cephalic tubercles 43-78µm long (n=7). Frontal setae 150-230µm long (m=196µm, n=11). Thoracic horn 138-208µm long (m=162µm, n=9); ThR 2.4-5.3 (m=3.7, n=8), with spines throughout its length. All precorneal setae grouped near the thoracic horn. Dorsocentral setae without great differences in breadth. Thorax dorsally with dense short toothlets; more laterally granulate (081e.jpg).
Abdomen: Hook row II more than 0.35x width of segment II. Shagreen on tergite II often restricted to anterior transverse band only; on III-VI anterior and posterior bands confluent; always between lateral adhesion marks. Median point patch of tergites III-V nearly rectangular, the anterior adhesion marks more or less embraced by the antero-lateral corners of the patch (087d.jpg). Pedes spurii B II present. Dorsal setae I-VIII: 4,4,4,5,5,5,5,2(1); Lateral setae I-VIII: 1,3,3,3,3,3,4,4(5); Ventral setae I-VIII: 1,4,4,4,4,4,4,0; lateral seta 4 on VIII about as strong as the other lateral setae, lateral most dorsal seta on VIII almost in line with lateral setae (apparent lateral seta 5).
Anal segment: Anal lobe ratio 1.2-1.5 (n=5). Anal lobes without fringe, very rarely with additional teeth laterally or apically. Length of anal macrosetae 0.75-0.95x length of the anal lobe (m=0.85, n=8).

Species keys out at Page 886: Orthocladiinae 297 Paracladius of the Text Key.

Holarctic species: widespread in Europe, eastern Mediterranean.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Northern and montane lakes.