ABSTRACT
The taxonomy of the monotypic genus Diguetinus Roewer, 1912 is discussed with a redescription of the only named species. The redescription, illustrations, and photographs are based upon male and female type specimens as well as a pair of more recently collected specimens from a relatively nearby location; both in Jalisco, Mexico. The genitalia are illustrated for the first time. A distribution map is provided with all verified records from iNaturalist included from: Aguascalientes, Jalisco, Guanajuato, Querétaro, Michoacán, Estado de México, Ciudad de México, Hidalgo, and Puebla. All available knowledge on the natural history is presented including biogeography and distribution, local distribution and habitat use, influence of physical factors, and interspecific relations.
Subject(s)
Arachnida/classification , Animals , Ecosystem , Female , Male , MexicoABSTRACT
This paper deals with some new material of Iranian harvestmen accumulated during and after 2017. These recent collections yielded 11 species from six families, including five species that had previously been known from Iran, and two families and six species which are established as being new for the fauna of the country. The latter include two newly described species of Phalangiidae, namely Homolophus airyamani spec. nov. (male; Hormozgan Province, southern Iran) and Phalangium martensi spec. nov. (male; Khuzestan Province, southwestern Iran). With the study of new specimens and the recording of previously known material, 28 species from six families of Opiliones are currently known from Iranian territories. The records include one species of Biantidae, one species of Dicranolasmatidae, five species of Nemastomatidae, 19 species of Phalangiidae, and a single species each for Sclerosomatidae and Trogulidae.
Subject(s)
Arachnida/classification , Animals , Iran , MaleABSTRACT
A key to the members of the subfamily Opilioninae is presented, including the genus Homolophus. That same genus is briefly reviewed, diagnosed, and redescribed based upon a study of approximately half of the described species. Many older museum specimens from the Zoological Institute (Saint-Petersburg, Russia) were identified and all species present were redescribed. A list of the 29 currently accepted species (all from Northeastern and Central Asia) is presented along with a list of another four species that their validity and proper inclusion in the genus are questioned (still need to be investigated extensively). Descriptions and redescriptions with many illustrations are presented for two new species and 15 previously described species of Homolophus: H. albofasciatus (Kulczynski, 1901); H. almasyi (Roewer, 1911); H. andreevae Starega Snegovaya, 2008; H. arcticus Banks, 1893; H. asiaticus (Gricenko, 1979a); H. betpakdalensis (Gricenko, 1976); H. charitonovi (Gricenko, 1972); H. chemerisi Starega Snegovaya, 2008; H. chevrizovi Starega Snegovaya, 2008; H. gobiensis Tsurusaki, Tchemeris Logunov, 2000; H. kozlovi sp. nov.; H. martensi (Starega, 1986); H. milkoi sp. nov.; H. nordenskioeldi (L. Koch, 1879a); H. pallens (Kulczynski, 1901); H. silhavyi Starega Snegovaya, 2008; H. tibetanus (Roewer, 1911); H. vladimirae (Silhavý, 1967). New country distributional records are detailed for nine species, not including those for the two new species. Three new combinations with Homolophus (H. almasyi, H. asiaticus, H. charitonovi) are recognized for Opilio almasyi Roewer, 1911, Opilio asiaticus Gricenko, 1979a, and Globipes charitonovi Gricenko, 1972.
Subject(s)
Arachnida , Animal Distribution , Animals , MuseumsABSTRACT
The spider genus Tayshaneta is revised based on results from a three gene phylogenetic analysis (Ledford et al. 2011) and a comprehensive morphological survey using scanning electron (SEM) and compound light microscopy. The morphology and relationships within Tayshaneta are discussed and five species-groups are supported by phylogenetic analyses: the anopica group, the coeca group, the myopica group, the microps group and the sandersi group. Short branch lengths within Tayshaneta contrast sharply with the remaining North American genera and are viewed as evidence for a relatively recent radiation of species. Variation in troglomorphic morphology is discussed and compared to patterns found in other Texas cave invertebrates. Several species previously known as single cave endemics have wider ranges than expected, suggesting that some caves are not isolated habitats but instead form part of interconnected karst networks. Distribution maps are compared with karst faunal regions (KFR's) in Central Texas and the implications for the conservation and recovery of Tayshaneta species are discussed. Ten new species are described: Tayshaneta archambaultisp. n., Tayshaneta emeraldaesp. n., Tayshaneta fawcettisp. n., Tayshaneta grubbsisp. n., Tayshaneta madlasp. n., Tayshaneta oconnoraesp. n., Tayshaneta sandersisp. n., Tayshaneta sprouseisp. n., Tayshaneta vidriosp. n. and Tayshaneta whiteisp. n. The males for three species, Tayshaneta anopica (Gertsch, 1974), Tayshaneta devia (Gertsch, 1974) and Tayshaneta microps (Gertsch, 1974) are described for the first time. Tayshaneta furtiva (Gertsch, 1974) and Tayshaneta uvaldea (Gertsch, 1974) are declared nomina dubia as the female holotypes are not diagnosable and efforts to locate specimens at the type localities were unsuccessful. All Tayshaneta species are thoroughly illustrated, diagnosed and keyed. Distribution maps are also provided highlighting areas of taxonomic ambiguity in need of additional sampling.
