Zavrelia pe2

new form

Diagnosis (n=1)
Exuviae 2.2mm long.
Cephalothorax: Cephalic tubercles short conical; frontal setae taeniate, 130µm long. Thoracic horn 224µm long, with a few sturdy points scattered over the apical two-thirds (129g.jpg); ThR 7.5. Thorax anteriorly strongly granulate and rugose.
Abdomen: Hook row II with 50 hooks. Small pedes spurii B present on segment II (pleura of this segment unarmed). Armament of tergite II as extensive as on tergite III, extending beyond seta D1 anteriorly. Tergites III-VI with a median and posterior patch of points on each side of the mid-line, which may be sufficiently extensive to form a single large continuous patch. Postero-lateral corners of segment VIII with a large spur (occasionally double and there may be additional lateral spurs on the segment) (128-1.jpg). Lateral taeniae of segments II-VIII: 2,3,3,4,4,5.
Anal segment: Anal lobe ratio 1.6. Fringe of anal lobe with 20/21 taeniae.

Form keys out at Page 372: Tanytarsini 15 ? Zavrelia of the Text Key.

(For more information see module IdentifyIt – file: Chironominae).

Ecological notes