DOI: 10.15468/trtduz
title: Hydrocanthus (Hydrocanthus) Paludimonstrus, A New Species From Bolivia (Coleoptera: Noteridae: Hydrocanthini) And Its Implications For Classification Of The Subgenera

description: This dataset contains the digitized treatments in Plazi based on the original journal article Miller, Kelly B. (2001): Hydrocanthus (Hydrocanthus) Paludimonstrus, A New Species From Bolivia (Coleoptera: Noteridae: Hydrocanthini) And Its Implications For Classification Of The Subgenera. The Coleopterists Bulletin 55 (3): 363-368, DOI: 10.1649/0010-065X(2001)055[0363:HHPANS]2.0.CO;2, URL: http://dx.doi.org/10.1649/0010-065x(2001)055[0363:hhpans]2.0.co;2AbstractHydrocanthus (Hydrocanthus) paludimonstrus (new species) is described from specimens collected in Beni, Bolivia. Important morphological features are figured, including male and female genitalia. The character combination present in H. (H.) paludimonstrus makes the species intermediate between Hydrocanthus (Guignocanthus) Young and Hydrocanthus s. str. Based on new evidence from H. (H.) paludimonstrus and re­examination of characters previously used to diagnose the subgenera, H. (Guignocanthus) is synonymized with Hydrocanthus s. str. (new synonymy).The Noteridae of South America are, to say the least, not well­known taxonomically. Most of the species are known only from original descriptions and catalogues, and very few genera have been revised. There are eight genera known from the Neotropical region including Canthydrus Sharp, Hydrocanthus Say, Mesonoterus Sharp, Notomicrus Sharp, Pronoterus Sharp, Siolius J. Balfour­Browne, Suphis Aubé and Suphisellus Zimmermann. Young (1978) revised Notomicrus and Grosso (1994) recently revised Suphis. Guignot (1948) presented a key to species of Mesonoterus and Young (1985) provided a key to the species of Hydrocanthus. In addition, Grosso (1979) provided an unpublished revision of the family in Argentina.Hydrocanthus can be distinguished from other South American Noteridae by the protibia produced with a robust, curved apical spine; the prosternal process very broad (two to three times as wide apically as the minimum distance between the procoxae); the apicoventral angle of the metafemur with a row of long, stout setae; and the posteroapical metatibial spur distinctly serrulate or pectinate. The genus has members occurring throughout the world. Bameul (1994) recently provided a list of the species from the Ethiopean and Oriental/Australian regions. There are 16 Neotropical and Nearctic species in the genus, including the one described here, with eight of these occurring in South America. The others are distributed from eastern North America to the Antilles, Mexico and Central America. Specimens are typically among the largest noterids encountered in the Neotropics with lengths ranging from about 3 to 6 mm. In general, the species in South America are very similar morphologically and differ primarily in coloration, body shape, degree of setation of male and female prosterna, prosternal processes and metasterna, shape of the male median and lateral lobes of the aedeagus and, in males, the presence or absence of a low tumidity (‘‘tubercle’’ sensu Young (1985)) on each side of the midline of the variously impressed metasternum. Some of the species are very difficult to distinguish and may be conspecific while others are relatively easily identifiable. The purposes of this paper are to describe a species new to science and to discuss the classification of the subgenera in light of character evidence from the new species.