Cyprinodon pachycephalus, a New Species of Pupfish (Cyprinodontidae) from the Chihuahuan Desert of Northern México

AbstractThe 11 genera of Nearctic Braconini are keyed: two of them, Myosoma Brullé with a wide pantropical range and Alienoclypeus Shenefelt, new genus, are found chiefly in the Chihuahuan desert and shrub fauna of northern Mexico and the southwestern U.S.A. and are recorded as Nearctic for the first time. Four new species are described in Myosoma: eumystax, impexum, longius, and durango. R. D. Shenefelt describes a new genus and species, Alienoclypeus insolitus. The genus Atanycolimorpha Viereck, 1913 is synonymized with Ipobracon Thomson, 1892. The genus Coeloides is revised for the Nearctic Region; 12 species are described and illustrated. Five of these are new: mexicanus, durangensis, sympitys, tsugatorus, and sonora. One species, C. rossicus (Kokujev), is Holarctic, a new subspecies, betulae, is described from Canada. The following are new synonyms: C. rufovariegatus (Provancher) = (dendroctoni Cushman), C. vancouverensis (Dalla Torre) = (brunneri Viereck), C. crocator (Kirby) = (promontorii Dalla Torre).

Download Full-text

Chiococca grandiflora (Rubiaceae), a new species from Northern Mexico

PhytoKeys ◽

10.3897/phytokeys.98.25170 ◽

2018 ◽

Vol 98 ◽

pp. 73-83 ◽

Cited By ~ 1

Author(s):

David H. Lorence ◽

Thomas R. Van Devender ◽

George M. Ferguson

Keyword(s):

New Species ◽

Conservation Status ◽

Iucn Red List ◽

Red List ◽

Northern Mexico ◽

Iucn Red List Criteria ◽

A New Species

The new species Chiococcagrandiflora Lorence & T.Van Devender from Sinaloa and Sonora, Mexico differs from its congeners by its larger, showy white flowers in compact cymes of 3–9, and infundibuliform corollas 16–20 mm long with tubes 13–17 mm long and lobes 3–3.5 mm long. Its distribution, habitat, and relationships are outlined. The conservation status for this species is estimated to be Endangered (EN) based on IUCN Red List Criteria.

Download Full-text

Re-evaluation of the generaPhloeodes,NoserusandNosoderma(Coleoptera: Zopheridae) with description of a new species ofNosodermafrom northern México

Annales de la Société entomologique de France (N S ) ◽

10.1080/00379271.2006.10700625 ◽

2006 ◽

Vol 42 (2) ◽

pp. 215-230 ◽

Cited By ~ 3

Author(s):

Mario García-París ◽

María Milagro Coca-Abia ◽

Gabriela Parra-Olea

Keyword(s):

New Species ◽

Northern Mexico ◽

A New Species

Download Full-text

A New Species of the Freshwater Cladoceran Genus Scapholeberis Schoedler, 1858 (Cladocera: Anomopoda) from the Semidesert Northern Mexico, Highlighted by DNA Barcoding

Zootaxa ◽

10.11646/zootaxa.2236.1.4 ◽

2009 ◽

Vol 2236 (1) ◽

pp. 50-64 ◽

Cited By ~ 11

Author(s):

PATRICIA QUIROZ-VÁZQUEZ ◽

MANUEL ELÍAS-GUTIÉRREZ

Keyword(s):

New Species ◽

Morphological Analysis ◽

Mitochondrial Gene ◽

Distinctive Character ◽

Desert Region ◽

Northern Mexico ◽

Hyaline Membrane ◽

Morphological Differences ◽

A New Species ◽

Trunk Limb

Sequencing of the CO1 mitochondrial gene (barcoding) highlighted a possible different species in the semi-desert region of Mexico. After a detailed morphological analysis we describe Scapholeberis duranguensis n. sp. (Cladocera: Anomopoda: Daphniidae). Specimens from the type locality, El Chupadero, Durango, were compared with specimens of S. armata armata Herrick, 1882 and S. armata freyi Dumont and Pensaert, 1983 from Canada and southeastern, central and northern Mexico. The main characters that differentiate the new species are: (1) a thicker denticulate membrane with a conspicuous underlying hyaline membrane at the posterior rim of the valves, (2) fewer setae in the gnathobase of trunk limb II and (3) longer and more rectilinear ejector hooks in trunk limb I. The presence of a pore-like structure at the top of the head was also observed, however we are not certain whether this can be considered as a distinctive character, as it was not consistent in all SEM scanned organisms. The denticulate membrane, the number of setae in the gnathobase of trunk limb II and the length of the ejector hooks are characters shared with other species, however, the combination of them and in particular the structure and thickness of the double membrane at the posterior rim of the valves lead us to conclude that S. duranguensis is a species different from S. armata and from other members of this genus. The CO1 sequences of S. armata freyi and S. duranguensis n. sp. showed a mean divergence of 12.02%, thus supporting the morphological differences between them. Finally, a comparison of the CO1 sequences of Scapholeberis duranguensis n.sp. with other Scapholeberinae available in GenBank supported our results.

Download Full-text