Chaetocladius insolitus

Author: Caspers, 1987

Diagnosis (Material in coll. ZSM)
Exuviae 4.5, 4.8mm long (n=2) (063-2.jpg).
Cephalothorax: Frontal setae 75-85µm long (n=3). Thoracic horn elongate, 178-210µm long, small-toothed, pointed at apex; ThR 6.5-10.2 (n=3). Precorneal setae 1-3: 103, 125; 93, 120; 60, 66µm long (n=2).
Abdomen: Tergite I unarmed, or with a small patch of points antero-laterally. Tergites II-VIII posteriorly with a conspicuous narrow transverse band of teeth, the remainder of the tergites covered with small points. Apical points behind the posterior transverse tooth row of segment II extensive, about 10 points deep (these can be nearly vertically superimposed on unstretched specimens), continued broadly on each side beyond the lateral extent of the posterior tooth row, first merging with the general armament of the tergite and then continued onto the paratergite; paratergite II medially nearly point free (063f.jpg). Points of apical bands as large as those in mid-tergite on segments III-V. Lateral setae 1-3 of segments II-VI of similar diameter and length, flexible, the fourth narrower and shorter. Lateral setae 1-4 of segment IV: 115-130; 108-138; 130-150; 100-125µm long (n=3); length longest seta 0.26-0.33x length IV.
Anal segment: Anal lobes rounded laterally, fringe absent. Lobes with the macrosetae short and strong, spine-like, 58-105µm long (n=3); length 6.5-17x width (n=3) and 0.25-0.48x length of lobe (n=2). One seta is situated in the proximal half of the lobe, the other two in the distal half.

Note: Of type Chaetocladius pe1 Langton, 1984.

Species keys out at Page 793: Orthocladiinae 205 Chaetocladius of the Text Key.

C. Europe.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes