Author: Hirvenoja, 1973
Diagnosis (Material in coll. ZSM; in part after Hirvenoja, 1973a - in italics)
Exuviae 5.6-6.9mm long (n=7).
Colour: Hyaline with the suture and abdominal tergites (II)III-IV darker.
Cephalothorax: Cephalic tubercles 88-113µm long (n=3). Frontal setae 185-245µm long (n=7). Thoracic horn 305-338µm long (n=4), with spines nearly throughout its entire length; ThR 2.3-3.6 (n=4). One of the precorneal setae displaced forwards close to the median antepronotal setae. 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, with 3-4 rows of spines; 101-214 hooks (m=146.4, n=8). Tergites II-VI with shagreen, nowhere exceeding lateral adhesion marks, on II and VI the anterior and posterior transverse bands separate. Pedes spurii B II and III present. Dorsal setae I-VIII: 4,4,4,5,5,5,5,2(1); Lateral setae I-VIII: 1,3,3,3,3,3-4,4,4(5); Ventral setae I-VIII: 1,4,4,4,4,4,4,1; 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 lobes without fringe, very rarely with additional teeth laterally or apically. Anal lobe ratio 1.4 (n=1). Length of anal macrosetae 0.59-0.77 length of the anal lobe (n=3).
Species keys out at Page 885: Orthocladiinae 296 Paracladius of the Text Key.
Distribution
Holarctic species: Fennoscandia, the Netherlands, France.
(For more information see module IdentifyIt – file: Orthocladiinae).
Ecological notes
Lakes.