A taxonomic revision of the genus Zyzzyzus Stechow, 1921 (Cnidaria: Hydrozoa: Tubulariidae)

Zootaxa ◽  
2007 ◽  
Vol 1627 (1) ◽  
pp. 1-22 ◽  
Author(s):  
CARLOS J.A. CAMPOS ◽  
ANTONIO C. MARQUES ◽  
ALVARO E. MIGOTTO
Keyword(s):  
Type Species ◽  
Taxonomic Revision ◽  
External Morphology ◽  
Western Pacific ◽  
Type Material ◽  
Valid Species ◽  
Nominal Species ◽  
Type Specimens ◽  
Additional Material ◽  
Northwest Atlantic

The hydrozoan genus Zyzzyzus is revised based on reexaminations of all available type specimens and on additional material. The taxon includes four valid species: Zyzzyzus spongicolus (von Lendenfeld, 1884), from the eastern Indian and southwest Pacific oceans; the type species, Z. warreni Calder, 1988, from the Atlantic, western Indian, and western Pacific oceans; and Z. floridanus Petersen, 1990 and Z. robustus Petersen, 1990, both from the northwest Atlantic. Although type specimens of Z. calderi Petersen, 1990 could not be located, it has been assigned here to the synonymy of Z. warreni because of similarities between the two in nematocyst dimensions, in number and structure of endodermal canals, and in external morphology of the hydrocaulus and hydrorhiza. A sixth nominal species (Corymorpha iyoensis Yamada, 1958) has on one occasion been assigned to the genus, but detailed studies of the type material are needed to resolve its taxonomic affinities.

Review of the Indo-West Pacific genus Inimicus (Synanceiidae: Choridactylinae)

Zootaxa ◽  
2018 ◽  
Vol 4482 (1) ◽  
pp. 52 ◽  
Author(s):  
TOMOKI INABA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
Pacific Ocean ◽  
Western Indian Ocean ◽  
Western Pacific ◽  
Andaman Sea ◽  
Valid Species ◽  
Nominal Species ◽  
Western Pacific Ocean ◽  
Type Specimens ◽  
West Pacific ◽  
Coral Sea

The stinger genus Inimicus Jordan & Starks, 1904 (family Synanceiidae), distributed in the Indo-West Pacific, is characterized by having two free pectoral-fin rays. Examination of the original descriptions and 420 specimens, including all available type specimens, of the genus resulted in the recognition of nine valid species: Inimicus brachyrhynchus (Bleeker, 1874) (recorded from Hong Kong and Singapore), I. caledonicus (Sauvage, 1878) (distributed in Andaman Sea and western Pacific Ocean), I. cuvieri (Gray, 1835) (Andaman Sea and western Pacific Ocean), I. didactylus (Pallas, 1769) (western Pacific), I. filamentosus (Cuvier, 1829) (western Indian Ocean), I. gruzovi Mandrytsa, 1991 (Coral Sea), I. japonicus (Cuvier, 1829) (East Asia), I. sinensis (Valenciennes, 1833) (eastern Indian and western Pacific oceans), and I. smirnovi Mandrytsa, 1990 (southwestern Pacific Ocean). Inimicus joubini (Chevey, 1927), previously considered a valid species, is herein regarded as a junior synonym of I. japonicus. Another 10 nominal species are confirmed to be synonymized with the nine species. A revised diagnosis for each species and a key to all the species are provided. 

The caudal appendix as an important character to identify various species in the genus Stenalpheops (Decapoda, Alpheidae)

Crustaceana ◽  
2017 ◽  
Vol 90 (13) ◽  
pp. 1615-1640 ◽  
Author(s):  
Yanrong Wang ◽  
Zhongli Sha
Keyword(s):  
Type Species ◽  
Morphological Characters ◽  
Large Male ◽  
Valid Species ◽  
Nominal Species ◽  
Type Specimens ◽  
Middle Stage ◽  
Growth Series ◽  
Important Character ◽  
The China Seas

The nominal genera Chelomalpheus Kim, 1998 and Cavipelta Hayashi, 1998 were treated as synonyms of Stenalpheops Miya, 1997 in the paper by Anker et al. (2001). Therefore, the type species of those genera (Chelomalpheus koreanus Kim, 1998 and Cavipelta yamashitai Hayashi, 1998, respectively) were synonymized with S. anacanthus Miya, 1997. Actually, those authors ignored that the morphological characters of the three species mentioned above show differences. For instance, all type specimens of Chelomalpheus koreanus Kim, 1998 are without a caudal appendix; the large male specimens of Cavipelta yamashitai Hayashi, 1998 have an abnormal shaped chela, which corresponds with the middle stage in a growth series of another nominal species, i.e., S. anacanthus. The opportunity to study abundant specimens from the China seas established that the type specimens of S. anacanthus Miya, 1997 are in fact composed of two species, and the same was found for the type specimens of Cavipelta yamashitai Hayashi, 1998; in addition, Chelomalpheus koreanus Kim, 1998 was found to be a valid species and is transferred to Stenalpheops; and S. crangonus (Anker, Jeng & Chan, 2001) is herein synonymized with S. anacanthus Miya, 1997, which name has priority, and this valid species is now re-described herein.

Revision of the genus Filellum Hincks, 1868 (Lafoeidae, Leptothecata, Hydrozoa)

Zootaxa ◽  
2011 ◽  
Vol 3129 (1) ◽  
pp. 1 ◽  
Author(s):  
ANTONIO C. MARQUES ◽  
ÁLVARO L. PEÑA CANTERO ◽  
THAÍS P. MIRANDA ◽  
ALVARO E. MIGOTTO
Keyword(s):  
Type Species ◽  
Type Specimen ◽  
Valid Species ◽  
Nominal Species ◽  
Museum Collections ◽  
Type Specimens ◽  
As Species ◽  
Species Inquirenda ◽  
A New Species ◽  
Scanning Electron

A taxonomic review of the cosmopolitan genus Filellum was performed considering morphology, morphometry and cnidome. Species for which we had access to materials were redescribed and morphologically characterized based on optical and scanning electron microscopy (SEM). The materials examined belong to museum collections, including type specimens. All records found in the literature were checked. Our analyses confirmed the validity of 10 out of the 18 nominal species referred to the genus, and established four others (F. adnatum, F. bouvieri, F. contortum and F. plicatum) as species inquirenda. A new species, Filellum bouvetensis sp. nov., is described. The species Reticularia annulata Watson, 1973, type species of the genus Corystolona Watson, 2002, has its type specimen referred to the genus Filellum, composing Filellum annulatum (Watson, 1973). We provide a key for the identification of the valid species of the genus Filellum.

Taxonomic revision of the New World genus Chlorotabanus Lutz, 1913 (Diptera: Tabanidae)

Zootaxa ◽  
2010 ◽  
Vol 2656 (1) ◽  
pp. 1 ◽  
Author(s):  
TIAGO KÜTTER KROLOW ◽  
AUGUSTO LOUREIRO HENRIQUES
Keyword(s):  
New Species ◽  
International Institutions ◽  
New World ◽  
Taxonomic Revision ◽  
External Morphology ◽  
Type Material ◽  
Valid Species ◽  
Dichotomous Key ◽  
Three New Species ◽  
New Synonymy

The genus Chlorotabanus Lutz is revised herein based on examination of external morphology of type material and specimens from Brazilian and international institutions (total of 2,134 specimens, 201 males and 1,933 females). Eight currently valid species are recognized: C. crepuscularis (Bequaert, 1926); C. fairchildi Wilkerson, 1979; C. flagellatus Krolow & Henriques, 2009; C. inanis (Fabricius, 1787); C. leucochlorus Fairchild, 1961; C. mexicanus (Linnaeus, 1758); C. ochreus Philip & Fairchild, 1956; C. parviceps (Kröber, 1934). Three new species are described: C. falsiflagellatus n. sp. (Brazil, Amazonas), C. leuconotus n. sp. (Amazon region) and C. microceratus n. sp. (Brasil, Maranhão). Tabanus tetrapunctus Thunberg, 1827, previously synonymous with C. mexicanus, here is synonymous with C. crepuscularis (new synonymy). We provide diagnosis, descriptions, redescriptions, distribution records, illustrations and discussion for all species, as well as a dichotomous key for identification of females.

An annotated type catalogue of the centipedes (Myriapoda: Chilopoda) held in the Zoological Museum Hamburg

Zootaxa ◽  
2021 ◽  
Vol 4977 (1) ◽  
pp. 1-103
Author(s):  
DETLEF THOFERN ◽  
NADINE DUPÉRRÉ ◽  
DANILO HARMS
Keyword(s):  
South America ◽  
Type Species ◽  
Type Material ◽  
Valid Species ◽  
Zoological Museum ◽  
Historical Overview ◽  
Type Collection ◽  
Type Specimens ◽  
Additional Species ◽  
As Species

Centipedes (Myriapoda: Chilopoda) are carnivorous arthropods that live in leaf litter and soil habitats on all continents except Antarctica. Roughly 3,300 species have been described to date but the taxonomy is still progressing and requires a thorough documentation of type material and type deposits. In this paper we provide an annotated catalogue of the centipede type collection at the Zoological Museum (ZMH) in Hamburg. This collection comprises 490 type specimens belonging to 141 taxa originally described as species, subspecies and varieties. More than half of these taxa were described by the pioneering myriapodologists Carl Graf Attems (Vienna) and Karl Kraepelin (Hamburg). The collection includes material representing 93 valid species or subspecies and contains specimens predominantly from Australia (33%), Asia (22%), Africa (20%) and South America (20%). Taxonomically, the focus is on the centipede orders Scolopendromorpha (56 valid species) and Geophilomorpha (28 valid species) with fewer types for the Lithobiomorpha (8 species). A total of 48 taxa (34% of type species) have been synonymized since they were originally described and the type material for 12 additional species at the ZMH is lost. We provide a brief historical overview of this collection from its origin at the Museum Godeffroy and the Johanneum in Hamburg, including the most relevant taxonomists and collectors, followed by an annotated taxonomic catalogue with details on all species that are or were represented by type material. 

Review of the hyperiidean amphipod family Lycaeidae Claus, 1879 (Crustacea: Amphipoda: Hyperiidea)

Zootaxa ◽  
2021 ◽  
Vol 5081 (1) ◽  
pp. 1-59
Author(s):  
WOLFGANG ZEIDLER
Keyword(s):  
Natural History ◽  
Junior Synonym ◽  
Type Material ◽  
Valid Species ◽  
Nominal Species ◽  
The South ◽  
Additional Material ◽  
Tropical Regions ◽  
The Past ◽  
The Family

This is the first comprehensive taxonomic review of the family Lycaeidae. This study is based primarily on the extensive collections of the Natural History Museum, Denmark (NHMD, formerly ZMUC) and the US National Museum of Natural History, Smithsonian Institution, Washington DC, USA (USNM), and on additional material from the South African Museum (SAM) and in the South Australian Museum (SAMA). The two currently recognized genera in the family, Lycaea Dana, 1852 and Simorhynchotus Stebbing, 1888, are maintained with the latter still regarded monotypic with S. antennarius (Claus, 1871). Characters used to distinguish species in the past are re-evaluated in order to determine their validity. There are 15 nominal species of Lycaea in the literature, excluding Pseudolycaea pachypoda Claus, 1879 and Metalycaea globosa Stephensen, 1925. Pseudolycaea Claus, 1879 is regarded a synonym of Lycaea, as confirmed by this study, and M. globosa is a junior synonym of L. serrata Claus, 1879, as demonstrated by an examination of the type material. Of the remaining nominal species many have been synonymized with L. pulex Marion, 1874 in the past, often based on erroneous literature references. Thus, the taxonomic status of all nominal species was redetermined by the examination of type material or from the original literature reference if type material could not be found. In conclusion, ten species of Lycaea are recognized as valid, including three described as new. Lycaea bovallii Chevreux, 1900 is determined to be a valid species with the following as junior synonyms, L. gracilis Spandl, 1924, L. bajensis Shoemaker, 1925 and L. bovallioides Stephensen, 1925. It seems to be widely distributed and relatively common in the tropical regions of all the world’s oceans, including the Mediterranean Sea. The other species recognized as valid are L. lilia Volkov, 1982; L. nasuta Claus, 1879; L. pachypoda (Claus, 1879); L. pulex Marion, 1874 (L. robusta Claus, 1879, L. similis Claus, 1879 and L. pauli Stebbing, 1888 regarded junior synonyms); L. serrata Claus, 1879 and L. vincentii Stebbing, 1888 (Amphipronoe longicornuta Giles, 1888 a junior synonym). In addition, three species are described as new to science; L. intermedia sp. nov., L. proserrata sp. nov. and L. osbornae sp. nov. All were found in the tropical regions of the Atlantic, Pacific and Indian Oceans; the former two are relatively common and widespread. All species are described and illustrated and a key is provided to facilitate their identification.  

scholarly journals Taxonomic revision of the snakes of the genera Palaeopython and Paleryx (Serpentes, Constrictores) from the Paleogene of Europe

2021 ◽  
Vol 140 (1) ◽  
Author(s):  
Georgios L. Georgalis ◽  
Márton Rabi ◽  
Krister T. Smith
Keyword(s):  
Type Species ◽  
Taxonomic Revision ◽  
Original Description ◽  
3D Models ◽  
Late Eocene ◽  
Type Material ◽  
Valid Species ◽  
Type Series ◽  
Type Area ◽  
New Material

AbstractLarge constrictor snakes, referred to the genera Palaeopython and Paleryx, are an ecologically prominent part of the fauna of Europe during the Paleogene. Most species were named over a century ago and their taxonomy is largely based on isolated vertebrae. Furthermore, the majority of named taxa originate from imprecisely known localities within the Phosphorites du Quercy, in southern France, and thus their exact age is not known. We critically review and re-diagnose these genera based on personal examination of all existing type material, an array of new specimens, and a detailed literature review. We consider Palaeopython and Paleryx to be valid and propose vertebral characters to distinguish them. We recognize three valid species of Palaeopython, i.e. Palaeopythoncadurcensis (type species) from the Phosphorites du Quercy, Palaeopythonceciliensis from Geiseltal, and Palaeopythonhelveticus from Dielsdorf (Switzerland), and one valid species of Paleryx, i.e. Paleryxrhombifer (type species) from Hordle Cliff (England). Four other species, which were previously treated as members of Palaeopython and Paleryx, i.e. “Palaeopython” filholii and “Palaeopython” neglectus from the Phosphorites du Quercy, “Palaeopython” fischeri from Messel, and “Paleryx” spinifer from Geiseltal, are also considered as valid but pertain to other genera. Among these four taxa, “Palaeopython” fischeri has been recently assigned to its own genus, Eoconstrictor. A new genus, Phosphoroboa gen. nov. is established to accommodate “Palaeopython” filholii. We designate a lectotype for Palaeopythoncadurcensis and establish that the paralectotype maxilla and dentary are reasonably referred to this species. New material attributed to Palaeopythoncadurcensis is described from the old collections of the Phosphorites du Quercy. Paleryxcayluxi, another species established from the old collections of the Phosphorites du Quercy, is synonymized here with Palaeopythoncadurcensis. We further clarify important errors in the original description and figures of Paleryxcayluxi, identify the exact specimens that comprise the type series, and designate a lectotype. Much new material is described for Palaeopythonceciliensis from its type area in Geiseltal and intracolumnar variation is considered. We describe additional vertebral and cranial material of Paleryxrhombifer from its type area in Hordle Cliff. Based on this cranial material, we suggest non-booid affinities for Paleryxrhombifer. We designate a lectotype for Paleryxdepressus and agree with its previous suggested synonymy with Paleryxrhombifer. We re-describe the lectotype and paralectotypes of “Palaeopython” neglectus and refer and describe new material of this species from the Phosphorites du Quercy, paying special attention to intracolumnar variation; we also defer a decision on its generic relations until more abundant and complete material can be studied. We describe new vertebral material of the booid Eoconstrictor cf. fischeri from Geiseltal; similar material was previously known only from Messel and Dielsdorf. We determine that Eoconstrictorfischeri contains two distinct and unrelated species and describe intracolumnar variation in the nominotype. We clarify certain issues regarding the type series of Paleryxspinifer, designate a lectotype, and report previously unrecognized cranial material associated with the latter specimen; we transfer this species to Eoconstrictor based on cranial features and recombine it as Eoconstrictorspinifer comb. nov. We finally describe much new vertebral and cranial material of Phosphoroboafilholii comb. nov. from the Phosphorites du Quercy (both from the old collections but also from the late Eocene localities of Escamps A and C), paying special attention to intracolumnar variation. Based on this cranial material from Escamps, we identify Phosphoroboa gen. nov. as a booid. An analytical approach is undertaken in many isolated remains in order to quantify vertebral structures and assess intracolumnar variation, as well as associating isolated cranial elements to vertebral-based taxa. 3D models of the type material of the Geiseltal and Messel taxa are presented. The importance of vertebrae in the taxonomy of fossil Constrictores is addressed, although it is acknowledged that it is cranial material that can afford the most reliable phylogenetic conclusions. The diversity, distribution, biogeographic origins, and final demise and extinction of large Constrictores in the Paleogene of Europe are discussed.

A taxonomic revision of the genus Mesophleps Hübner, 1825 (Lepidoptera: Gelechiidae)

Zootaxa ◽  
2012 ◽  
Vol 3373 (1) ◽  
pp. 1 ◽  
Author(s):  
HOUHUN LI ◽  
KLAUS SATTLER
Keyword(s):  
New Species ◽  
Taxonomic Revision ◽  
Species Group ◽  
Type Material ◽  
Nominal Species ◽  
New Combinations ◽  
Old World

The genus Mesophleps Hübner (Lepidoptera: Gelechiidae) is revised; 54 available names (including one unjustifiedemendation), one junior primary homonym and one unavailable name were considered; type material of 44 previouslydescribed nominal species was examined. Nine new species are described: M. acutunca sp. nov., M. bifidella sp. nov., M.unguella sp. nov., M. gigantella sp. nov., M. coffeae sp. nov., M. parvella sp. nov., M. aspina sp. nov., M. truncatella sp.nov. and M. undulatella sp. nov. Two possibly new species are discussed but not formally named for lack of material.Twenty-five new combinations are introduced: M. safranella (Legrand, 1965) comb. nov., M. epichorda (Turner, 1919)comb. nov., M. tabellata (Meyrick, 1913) comb. nov., M. crocina (Meyrick, 1904) comb. nov., M. ochracella (Turati,1926) comb. nov., M. geodes (Meyrick, 1929) comb. nov., M. catericta (Meyrick, 1927) comb. nov., M. tephrastis(Meyrick, 1904) comb. nov., M. cycnobathra (Lower, 1898) comb. nov., M. tetrachroa (Lower, 1898) comb. nov., M.ochroloma (Lower, 1901) comb. nov., M. trichombra (Lower, 1898) comb. nov., M. mylicotis (Meyrick, 1904) comb. nov.,M. macrosemus (Lower, 1900) comb. nov., M. apentheta (Turner, 1919) comb. nov., M. meliphanes (Lower, 1894) comb.nov., M. chloranthes (Lower, 1900) comb. nov., M. centrothetis (Meyrick, 1904) comb. nov., M. chloristis (Meyrick,1904) comb. nov., M. argonota (Lower, 1901) comb. nov., Megacraspedus arnaldi (Turati & Krüger, 1936) comb. nov.,Aponoea cinerellus (Turati, 1930) comb. nov., Pycnobathra acromelas (Turner, 1919) comb. nov., Sarotorna mesoleuca(Lower, 1900) comb. nov., S. dentata Meyrick, 1904, comb. nov. One species, Nothris mesophracta Turner, 1919, isremoved from Mesophleps but no current genus is available. Fourteen new synonymies (one genus, 13 species-group taxa)are established: Bucolarcha Meyrick, 1929, syn. nov. of Mesophleps Hübner, [1825]; Stiphrostola longinqua Meyrick,1923, syn. nov. and Brachyacma trychota Meyrick, 1929, syn. nov. of M. ioloncha (Meyrick, 1905); Lipatia crotalariellaBusck, 1910, syn. nov. of M. adustipennis (Walsingham, 1897); Brachyacma epichorda Turner, 1919, syn. nov. of M.epiochra (Meyrick, 1886); Mesophleps pudicellus var. apicellus Caradja, 1920, syn. nov. and Mesophleps silacellus subsp.calaritanus Amsel, 1939, syn. nov. of M. silacella (Hübner, 1796); Mesophleps lala Agenjo, [1961], syn. nov. of M.corsicella (Herrich-Schäffer, 1856); Crossobela barysphena Meyrick, 1923, syn. nov. of M. trinotella Herrich-Schäffer,1856; Mesophleps orientella Nel & Nel, 2003, syn. n. and Mesophleps gallicella Varenne & Nel, 2011, syn. nov. of M.ochracella (Turati, 1926); Nothris centrothetis Meyrick, 1904, syn. nov. and Nothris chloristis Meyrick, 1904, syn. nov.of M. chloranthes (Lower, 1900); Mesophleps cinerellus Turati, 1930, syn. nov. of Aponoea obtusipalpis Walsingham,1905. One genus and one species are recalled from synonymy: Pycnobathra Lower, 1901, gen. rev., and M. ioloncha(Meyrick, 1905) sp. rev. Lectotypes are designated, in accordance with the Code, article 74.7.3, for 14 species: Gelechiapalpigera Walsingham, 1891; Paraspistes ioloncha Meyrick, 1905; Lathontogenus adustipennis Walsingham, 1897;Brachyacma epichorda Turner, 1919; Nothris crocina Meyrick, 1904; Nothris ochracella Turati, 1926; Nothris tephrastisMeyrick, 1904; Ypsolophus ochroloma Lower, 1901; Ypsolophus macrosemus Lower, 1900; Nothris centrothetis Meyrick,1904; Nothris chloristis Meyrick, 1904; Ypsolophus argonota Lower, 1901; Mesophleps arnaldi Turati & Krüger, 1936,and Mesophleps cinerellus Turati, 1930. Mesophleps is a widely distributed Old World genus, except for one New Worldspecies, with seed-feeding larvae on Cupressaceae, Cistaceae, Cruciferae (Brassicaceae), Leguminosae (Fabaceae), Rubiaceae and doubtfully Dipterocarpaceae.

A revision of the gobiid fish genus Pseudogobius (Teleostei, Gobiidae, Tridentigerinae), with description of seven new species from Australia and South-east Asia

Zootaxa ◽  
2021 ◽  
Vol 4961 (1) ◽  
pp. 1-85
Author(s):  
HELEN K. LARSON ◽  
MICHAEL P. HAMMER
Keyword(s):  
New Species ◽  
Feedback Loop ◽  
Valid Species ◽  
Nominal Species ◽  
Type Specimens ◽  
Gobiid Fish ◽  
West Pacific ◽  
Close Proximity ◽  
Tropical Areas ◽  
Initial Focus

The tridentigerine genus Pseudogobius is widespread, from temperate to tropical areas of the Indo-west Pacific. A morphological review of the genus was carried out, with the initial focus on South-east Asian and Australian species. There are about 21 nominal species in the genus; however, the type specimens for some nominal species are missing. Our work recognises 15 valid species so far, including seven new species, which are described herein: P. aquilonius n. sp., P. cinctus n. sp., P. eos n. sp., P. hoesei n. sp., P. jeffi n. sp., P. rhizophora n. sp. and P. verticalis n. sp. We also conclude that P. poicilosoma (Bleeker, 1849) is the senior synonym of P. javanicus (Bleeker, 1856). Pseudogobius poicilosoma, P. gastrospilos (Bleeker, 1853) and P. javanicus are accepted here as conspecific, although the types are in poor condition (note that all three names were given to specimens collected within close proximity to each other in coastal Java, Indonesia). A key to valid species is presented. The revision benefited from an adaptive feedback loop with companion genetic analyses, with the most comprehensive data available for the Australian region. Broader preliminary genetic data suggest the potential for recognition of additional cryptic species, with the current study providing a platform for future systematic work. Pseudogobius are a prominent part of estuarine biodiversity in the Indo-west Pacific, and this study helps to highlight the need to better understand the taxonomy and conservation requirements of cryptobenthic fishes. 

Taxonomic revision of the Neotropical genus Himantigera James, 1982 (Diptera: Stratiomyidae: Sarginae), including the description of two new species and a key to the known species

Zootaxa ◽  
2018 ◽  
Vol 4531 (4) ◽  
pp. 451
Author(s):  
DIEGO AGUILAR FACHIN ◽  
MARTIN HAUSER
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Trinidad And Tobago ◽  
Geographical Distribution ◽  
Type Species ◽  
Taxonomic Revision ◽  
Junior Synonym ◽  
Type Specimens ◽  
Two New Species

The Neotropical genus Himantigera James in James & McFadden, 1982, is revised. Two new species are described and illustrated—H. amauroptera nov. sp. (Costa Rica, Panama, Colombia), and H. xanthopoda nov. sp. (Mexico, Nicaragua, Costa Rica). Three species are transferred from Himantigera to Sargus Fabricius, 1798—S. dichrous (Schiner, 1868) comb. nov., S. flavoniger Lindner, 1928 comb. rev. and S. fulvithorax (Bigot, 1879) comb. nov. One species is transferred to Microchrysa Loew, 1855—M. splendens (Schiner, 1868) comb. nov. Himantigera jamesi Lindner, 1969 syn. nov. is proposed as a junior synonym of H. superba Lindner, 1949. The type species H. silvestris McFadden, 1982, as well as H. nigrifemorata Macquart, 1847 and H. superba Lindner, are herein redescribed and illustrated. Photographs of the type specimens of these three species are provided. Two unnamed species of Himantigera (sp. A and sp. B) are also described given that they have slight differences, but because we had only one specimen of each species, we did not officially describe them. This updates the total number of extant Himantigera from eight sensu Woodley (2001) to seven species. The species Merosargus apicalis Lindner, 1935, although never referred to the genus Himantigera or Himantoloba McFadden 1970, is also transferred to the genus Sargus. A key to all species of Himantigera and a map expanding geographical distribution of the genus are also presented, with the first records of the genus for Nicaragua, Colombia, Venezuela, Trinidad and Tobago, Ecuador and Bolivia. 

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