Medium-sized Rhynchokarlingiidae (1.5–3 mm long) with four cuticular hooks in male copulatory apparatus. Two lateral hooks of more or less regular sack form and similar length, with well expressed, almost medial narrowings and rounded distal ends. Two medial hooks much shorter (almost two times), than the lateral hooks, cone or claw shaped, with slightly bent apex and sharp distal ends. Their length is quite different.[From Timoshkin OA (2004): 1350]
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