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Lathrup Village, MI, United States

Seven species of otopheidomenid mites (Acari: Otopheidomenidae), all described by Prasad in the genus Otopheidomenis and now belonging to the genus Prasadiseius Wainstein (P. achlora, P. aporodes, P. cocytes, P. donahuei, P. indicus, P. kayosiekeri, and P. pholusis) are known to occur on sphingid or hawk moths (Lepidoptera: Sphingidae). These species are redescribed following the work of Chant and Yoshida-Shaul (1992) on the nomenclature of the idiosomal setae of phytoseiid mites, the sister group of the Otopheidomenidae, and applied for the naming of the idiosomal setae of species of the genus Prasadiseius (Otopheidomenidae). A discussion of which setae are fixed and variable and a key for the identification of the known species are also provided. © 2011 Taylor & Francis. Source

The ectoparasitic otopheidomenid sphingid or hawk moth mite, Prasadiseius cocytes (Prasad, 1970) (Acari: Otopheidomenidae) described over 40 years ago from museum-preserved moths, was recently re-collected from several moths by the author. Of these, one moth, Manduca rustica (Fab.) (Lepidoptera: Sphingidae), collected in neotropical rainforest habitat of Ecuador, unusually showed very heavy infestation with several hundred mites on the dorsal side of the body, including wings. It had eggs, larvae, nymphs, and adults. This kind of infestation in the sphingid moths has not been recorded before and is reported in this paper. © 2011 Taylor & Francis. Source

In July 2011, 668 dead moths of the genus Manduca (Lepidoptera: Sphingidae) stored in the collection of Florida Museum of Natural History, Gainesville, Florida, USA, were examined and revealed the following regarding the ectoparasitic otopheidomenid mites (Acari: Otopheidomenidae): (1) Prasadiseius cocytes (Prasad, 1970a) was found on Manduca rustica (Fabricius) in Brazil (new host record), on Manduca lefeburii (Guérin-Méneville) in Colombia (new country and new host), on Manduca occulta (Rothschild and Jordan) in Ecuador (new host), and on M. rustica (Fabricius) in Mexico (new country and host); (2) Prasadiseius donahuei (Prasad, 1970a) was found on M. rustica (Fabricius) in Cuba, Mexico and Arizona, USA (new countries and host); (3) infestation rate of sphingid moths with P. cocytes and P. donahuei was 1.8%; (4) infestation ratio of female to male sphingid moths with either/or P. cocytes and P. donahuei was 1:1 with the mites showing no preference for the sex of the moths; (5) female to male sex ratio of P. cocytes was 2:1 in the specimens from Brazil, Colombia, Ecuador and Mexico but, unusually, 1:2.5 (less females than males) on a single M. occulta specimen from Ecuador; and (6) the female to male sex ratio in P. donahuei was 1:1.5 on M. rustica specimens from Cuba, Mexico and USA (unusually less females than males). The current geographical distribution and host range of all eight Prasadiseius species known from sphingid moths in the world are given. The significance of new finding of P. donahuei in Colombia, Cuba and southern USA (state of Arizona) is discussed. It is believed by the author that these parasitic mites are present on sphingid moths in some eastern-southern-western states of USA on other genera of Sphingidae indicating a wide range of distribution from South America to North America in the Neotropical ecosystem. Thus, a survey is required for these states and other genera of Sphingidae to confirm their presence and study their bioecology. © 2013 © Taylor & Francis. Source

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