Form described by Langton, 1991
Diagnosis (n=1)
Exuviae 5.5mm long.
Cephalothorax: Cephalic tubercles and frontal setae absent.
Abdomen: Hook row II entire, length of row 0.53x width tergite; hooks 87. Tergites II-V with median point patch and posterior band fused to form a nearly rectangular patch of strong points; on tergite VI the median patch and posterior band are separate or similar to that on V, and there is a reduced patch on VII. Armament of tergite VI with median and posterior bands continuous (107d.jpg). Reticulation less well-developed: dorsally and ventrally VII and VIII evanescent medially. Sternites I-(II)III with transverse spine rows, anteriorly and/or posteriorly. Pedes spurii B absent. Conjunctives unarmed. Comb of segment VIII absent. Lateral taeniae of segments V-VIII: 4,4,4,5.
Anal segment: Fringe of anal lobe with 48/50 taeniae.
Form keys out at Page 236: Chironomini 133 Robackia of the Text Key.
Distribution
Portugal.
(For more information see module IdentifyIt – file: Chironominae).