Medium-sized Rhynchokarlingiidae (1.5–2.5 mm in the length), with two cuticular hooks in male copulatory apparatus. Hooks consist of three parts: strong oval, rounded or irregularly shaped base (“basal rings”), well-developed isthmus (often stick-shaped, the thinnest part of a hook; in exceptional cases, very short or poorly developed) and the most distal part of different width and form. Hooks may be shovel-, scoop-, lancet-, scalpel- and even corkscrew-shaped. Bulbus with homogeneously developed muscle wall and normally developed papilla.
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