Hysteronotal Shield Research Articles

A new feather mite species of the subfamily Analginae (Acari, Astigmata, Analgidae) from the Savi’s warbler Locustella luscinoides (Aves, Passeriformes) in South Dobrudzha, Bulgaria

AbstractA new representative of the subfamily Analginae, Anhemialges mironovi sp. nov., collected from feathers of the Savi’s warbler Locustella luscinoides (Savi, 1824) (Passeriformes, Sylviidae) from the region of South Dobrudzha (Bulgaria), is described. This species is most similar to A. gaudi Mironov, 2009. The new species differs from A. gaudi by the following features in males: the incision in the interlobar membrane is longer, the gastral shield is split into two parts, and the hysteronotal shield bears a crescent-shaped subtegumental sclerotisation.

A review of the genus Listropsoralges (Acari, Psoroptidae) with the descriptions of two new species

AbstractMites of the genus Listropsoralges permanently parasitizing New World marsupials of the family Didelphidae are revised. An emended diagnosis of this genus, descriptions of the new species L. caluromys sp. nov. and L. faini, and a key to species based on males are provided. Listropsoralges caluromys differs from the morphologically similar L. marmosae by shorter setae se (35–37 μm long in males and 48–55 μm long in females), by female setae h3 not being thickened and being subequal in the length to setae ps2 and ps3 (12–14 and 9–10 μm long, respectively) and by pretarsi III represented by only remnants of the pretarsal stalk in both sexes. L. faini sp. nov. (only males are known) differs from males of the morphologically similar L. monodelphis by having homogeneous ornamentation of the hysteronotal shield and by setae h2 and h3 not being positioned on distinct fleshy projections.

Morphology and Systematics of the Mite Subfamily Dromiciocoptinae (Acari: Myocoptidae), with Description of Two New Species

Abstract Two new species Dromiciocoptes marmosops sp. n. and Dromiciocoptes caenolestes sp. n., of the subfamily Dromiciocoptinae (Acari: Myocoptidae), are described from Marmosops parvidens Tate (Didelphimorphia: Didelphidae) from Peru and Caenolestes fuliginosus (Tomes) (Pauctituberculata: Caenolestidae) from Ecuador, respectively. Dromiciocoptes has been included in a monobasic subfamily in the Myocoptidae on the basis of female and nymph legs III and IV of being modified for clasping the hair of the host. Observations on the actual structure of these appendages, however, indicate that the mode of hair clasping is fundamentally different than in other myocoptids. The structure of the male legs IV of Dromiciocoptinae and Myocoptinae are also different. Additional diagnostic characters of the subfamily Dromiciocoptinae in both sexes are the enlarged propodonotal and hysteronotal shields; indistinct openings of the opisthonotal glands; reduced pretarsi II; retrorse spurs on coxal fields I–IV; absence of s...

A new species of Pterodectes Robin, 1877 (Proctophyllodidae: Pterodectinae) from the pale-breasted thrush, Turdus leucomelas (Passeriformes: Turdidae)

A new species of feather mite, Pterodectes fissuratus sp. n., is described from the pale-breasted thrush, Turdus leucomelas Veillot (Passeriformes: Turdidae), in Brazil. This species is easily distinguished by having numerous well-pronounced lacunae and a longitudinal median furrow on prodorsal and hysteronotal shields in both sexes.

Four new species of feather mites (Acari: Analgoidea)

AbstractFour new species of feather mites are described from birds in Canada: Megniniella ratcliffisp.nov. (Analgidae) and Metanalges holderisp.nov. (Analgidae) from the Sora, Porzana carolina (Linnaeus) (Gruiformes: Rallidae): Metingrassia pelecanisp.nov. (Xolalgidae) from the American White Pelican, Pelecanus erythrorhynchos Gmelin (Pelecaniformes: Pelecanidae); and Vingrassia cygnisp.nov. (Xolalgidae) from the Tundra Swan, Cygnus columbianus (Ord) (Ànseriformes: Anatidae). The genus Vingrassia is reinstated from its previous synonymy with the genus Ingrassia based on the presence of an enlarged prodorsal shield in both sexes, by the shape of the idiosoma and the interlobar membrane on the lobar apices in the male, and by the shape of the hysteronotal shield and the absence of setae ps2 in the female.

Two New Myocoptidae (Acari, Astigmata) from North American Rodents

Two new species of Myocoptidae (Acari, Astigmata) are described: Myocoptes neotomae sp. n. from Neotoma floridana and Trichoecius gettingeri sp. n. from Peromyscus leucopus both from the USA. Myocoptes neotomae sp. n. differs from M. musculi by the absence of scales posterior to the hysteronotal shield, by the greater length of 12 as compared to d2 in the female, and by the much shorter dl and d2 and the longer penis in the male. Trichoecius gettingeri differs from T. tenax by the shorter epimeres III, the much shorter setae 11, dl and d2, the absence of 12 in the female, the absence of dorsal striations, the poorly developed epimeres I-II and the small size of male legs IV. Information on myocoptids in general and North American myocoptids in particular has been summarized in Fain et al. (1970) and Fain and Hyland (1970), and information on ectoparasites of mammals of Indiana has been recently summarized by Whitaker (1982). We describe herein two new myocoptids from North American rodents: Myocoptes neotomae sp. n. from Neotoma floridana from Indiana and Trichoecius gettingeri sp. n. from Peromyscus leucopus from Pennsylvania. Measurements are in Aum unless noted.