Sympotthastia spinifera

Author: Serra-Tosio, 1968

Diagnosis (n=1, material in coll. Serra-Tosio)
Exuviae about 6.5mm long.
Cephalothorax: Thoracic horn absent. Precorneal setae 1-3: 138; 175; 60µm long. Dorsocentral setae nearly equidistant: distance dorsocentral setae 1-2:2-3 0.87:1; second dorsocentral seta 60µm long, less than half the length of the first.
Abdomen: Small points of tergite II much less extensive, spreading at most to the posterior adhesion marks. Most of the lateral setae of the abdominal segments branched.
Anal segment: Anal lobe ratio 1.3. Anal lobes in addition to the three long apical macrosetae with a fringe of short hair-like setae (026c.jpg).

Note: The single pharate adult specimen seen very closely resembles Sympotthastia macrocera ; its antepronotal setae are missing and their sockets indistinguishable, hence the inference that these setae also are small.

Species keys out at Page 530: Diamesinae 6 Sympotthastia of the Text Key.

S+C Europe.
(For more information see module IdentifyIt – file: Other subfamilies).

Ecological notes
Rivers: Massif Central; Pyrenees; Italy.