Abstract
A new species, Hexamermis paranaense n. sp. (Nematoda, Mermithidae), a parasite of larvae of Diloboderus abderus Sturm, 1826 (Coleoptera, Scarabaeidae) is described and illustrated. This new species is characterized by amphids small, amphidial opening pocket-shaped, the anterior portion of the vagina muscularized and slightly protruding with a descending branch forming a loop before joining the uterus, and three rows of genital papillae: the ventrolateral divided in two rows with eight papillae in the outer row and with six papillae in the inner one; the ventral row with four pairs and one single preanal papillae, and with two pairs, a triplete, one pair, a single and one pair postanal papillae.
Highlights
At present five species have been isolated from Argentina, H. cochlearius Stock & Camino, 1992, H. ovistriata Stock & Camino, 1992, both in acridids; H. macrostoma Camino & Stock, 1994, a parasite of crickets; H. hortensis Camino & Stock, 1989, in Lepidoptera, noctuids; and H. gracilis de Villalobos & Camino, 1998, parasitizing white grub
While conducting a field survey on horticulture pests in the area of Paraná, Entre Ríos, in Argentina we found some larvae of Diloboderus abderus Sturm, 1826 (Coleoptera, Scarabaeidae) which were parasitized by mermithid nematodes
This species is placed in the genus Hexamermis to posses a horn-shaped vagina, amphids separated from the lateral cephalic papillae (RUBSTOV, 1978)
Summary
(Nematoda, Mermithidae): parasito de Diloboderus abderus (Coleoptera, Scarabaeidae) en Argentina. (Nematoda, Mermithidae), parásito de larvas del gusano blanco, Diloboderus abderus Sturm, 1826 (Coleoptera, Scarabaeidae), se describe e ilustra. While conducting a field survey on horticulture pests in the area of Paraná, Entre Ríos, in Argentina we found some larvae of Diloboderus abderus Sturm, 1826 (Coleoptera, Scarabaeidae) which were parasitized by mermithid nematodes. They represented a new species described below under the name of Hexamermis paranaense n. They represented a new species described below under the name of Hexamermis paranaense n. sp
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