Halocladius (Psammocladius) Hirvenoja



Medium-sized larvae, up to 8 mm long.


Antenna with 5 segments; segments 3 and 4 subequal in length and each longer than segment 5. Ring organ indistinct, on basal 1/4 of segment 1. Blade ending before apex of flagellum. Lauterborn organs indistinct or absent. Style longer than length of segment 3.


with SI coarsely plumose with about 10 branches; remaining S setae simple. Labral lamellae absent. Chaetae serrate; spinulae simple. Pecten epipharyngis consisting of 3 scales. Chaetulae laterales simple; chaetulae basales with branched apices. Ungula V-shaped with oval basal sclerite. Premandible with 3-5; brush strong.


Apical tooth shorter than combined width of 3 iblunt nner teeth. Seta subdentalis simple, apically pointed or rounded. Seta interna with 6-7 simple to serrate branches. Outer margin smooth to weakly crenulate. Mola without spines.


Mentum with 1 median and 6 pairs of lateral teeth; concave with a broad flat median tooth shorter than the lateral teeth. Ventromental plate narrow; beard very long.


Maxilla palpiger with triangular chaetulae. Galea with simple to complex lamellae; pecten galearis absent. Seta maxillaris simple.


Body with anterior and posterior parapods separate, each with an apical group of simple claws. Procercus shorter to about as long as wide, bearing 5-6 anal setae; without spur. Anal tubules absent. Body setae simple.


Ecological Notes

Halocladius subgenus Psammocladius is known from saline sand habitats in the Palaearctic.

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