Halocladius variabilis

Author: (Staeger, 1839)

Diagnosis (n=1, in part after Hirvenoja, 1973a - in italics)
Exuviae 4.1mm long.
Cephalothorax: Frontal setae between antennal bases on apotome or on praefrons. Thoracic horn absent. Thorax at most strongly granulate.
Abdomen: Hook row II with 103-186 hooks (m=155, n=10) in 2-3 rows. Pedes spurii B restricted to segment II, usually not granulate (082f.jpg). Median point patches of tergites III-V nearly rectangular, the anterior adhesion marks embraced by the antero-lateral corners of the patch. Pleura of segments II and III at most with restricted armament. Dorsal setae I-VIII: 4,4,4,5,5,5,5,2; Lateral setae I-VIII: 1,3,3,3,3,3,4,4; Ventral setae I-VIII: 1,4,4,4,4,4,4,0. The fourth lateral seta of segment VIII not especially longer than the other lateral setae of that segment.
Anal segment: Anal lobe ratio 1.8. Anal lobe setae one sixth to one quarter the length of the lobes (082g.jpg). Anal lobes without fringe. Length of anal macrosetae 0.23x lobe length.
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 892: Orthocladiinae 303 Halocladius of the Text Key.

Holarctic species: widespread coastal Europe, Azores.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes