ABSTRACT

Two species of nematodes (Mononchoides macrospiculum and Teratorhabditis synpapillata) and one species of mites (Trichouropoda sp.) are found associated with adult specimens and larval cocoons of the red palm weevil Rhynchophorus ferrugineus (Hexapoda: Coleoptera). Morphological, morphometrical and molecular studies of both nematode species show that they are very similar to the populations of these species examined from Italy. Additionally, the nematode T. synpapillata shows similarity to the Asian population, especially to that from India and Japan found in red palm weevil, showing some differences with respect to populations found in soil. According to this, some of the phoretic invertebrates attached to the red palm weevil may have come from southern Asia through Egypt, where this genus of mites is also found. Illustrations based on light and scanning electron microscopy are provided from all species examined, as well as phylogenetic trees based on 18S and 28S fragments of rDNA of the nematode species.

摘要

发现有两种线虫（Mononchoides macrospiculum和Terohabditis synpapillata）和一种螨（Trichouropoda sp。）与成年标本和红掌象甲Ryynchophorus ferrugineus（Hexapoda：Coleoptera）的幼虫茧有关。两种线虫物种的形态学，形态计量学和分子研究表明，它们与从意大利检验的这些物种的种群非常相似。另外，线虫T. synpapillata显示出与亚洲人口的相似性，尤其是与印度和日本在红棕榈象鼻虫中发现的相似性，显示出在土壤中发现的某些相似性。据此，附着在红掌象鼻虫上的一些隐身无脊椎动物可能来自亚洲南部，途经埃及，埃及也发现了这种螨类。提供了基于光和扫描电子显微镜的插图，其中包括所有检查的物种以及基于线虫物种rDNA的18S和28S片段的系统树。