Nematodes associated with palm and sugarcane weevils in South Florida with a description of Acrostichus floridensis n. sp.

Nematology ◽  
2017 ◽  
Vol 19 (5) ◽  
pp. 515-531 ◽  
Author(s):  
Natsumi Kanzaki ◽  
Robin M. Giblin-Davis ◽  
Rafael Gonzalez ◽  
Mujahid Manzoor

During a 2016 survey of the nematode associates of the native palmetto weevil,Rhynchophorus cruentatus, and the recently introduced West Indian sugarcane weevil,Metamasius hemipterus(Coleoptera: Curculionidae), from southern Florida, a new species ofAcrostichuswas cultured from a single dissectedR. cruentatusfrom Fort Pierce, FL, USA. Morphological and molecular studies showed that it was new to science and it is described herein asA. floridensisn. sp. The new species is characterised by its male tail characters, spicule morphology with rounded manubrium separated from other parts by clear constriction, smoothly ventrally curved blade, slightly dorsally recurved and pointed tip, more or less straight gubernaculum with widely rounded anterior end and a triangular (arrowhead-like) appendage at the distal tip, and the arrangement of male genital papillae, ⟨(v1, v2), v3 / v4, ad, ph, (v5, v6, v7, pd)⟩. In addition toA. floridensisn. sp. and the previously described nematode associates ofR. cruentatus,i.e.,A. rhynchophori,Teratorhabditis palmarumandMononchoidessp., we recovered a putative new species ofDemaniellaand a new association record withRhabditidoides humicolusandDiplogastrellus metamasiusin Homestead, FL. Dissections and subsequent culturing attempts withM. hemipterusrevealed the previously described nematode associates ofCaenorhabditis angariaandD. metamasiusas well as a new association withR. humicolusin Homestead, FL, USA.

Nematology ◽  
2008 ◽  
Vol 10 (6) ◽  
pp. 853-868 ◽  
Author(s):  
Weimin Ye ◽  
Barbara Center ◽  
Robin Giblin-Davis ◽  
Natsumi Kanzaki ◽  
Yongsan Zeng

AbstractDiplogastrellus metamasius n. sp. (Rhabditidae) was cultured from dauer juveniles recovered during dissections of the West Indian sugarcane weevil, Metamasius hemipterus (Coleoptera: Dryophthoridae), from southern Florida and Costa Rica. Morphological studies of these two isolates with light microscopy and SEM revealed many typological differences between it and the closest putative relative. Based upon molecular and mating studies, the two isolates are conspecific and are described herein as Diplogastrellus metamasius n. sp. Diplogastrellus metamasius n. sp. is characterised by stomatal structure, i.e., cheilostom with thin adradial cuticular flaps, anterior region of gymnostom ring strongly cuticularised and refractile, stegostom forming a structure resembling a 'glottoid' apparatus and possessing a movable, flap-like, dorsal tooth with small ventral ridges, oblong (elongated) median bulb in both sexes, single gonad with short (less than one vulva body diam.) postuterine sac, well developed ovary reflexed posteriorly beyond the vulva, tapered to filiform tail in both sexes, relatively large gubernaculum in males (with arcuate anterior part and pointed distal part in lateral view) and arrangement of the nine pairs of male genital papillae, especially the position of first two pairs which are located far anterior to the cloacal slit. Because of the many possibilities for homoplasy in the morphological characters possessed by the new species and described species in the 'sister' genera of Butlerius, i.e., the arrangement of male caudal papillae, and Paroigolaimella, i.e., the arrangement of cheilostomatal flaps, molecular analysis of more members of these putative clades is necessary before unambiguous generic placement of this new species is possible.


PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7886
Author(s):  
Gavin J. Svenson ◽  
Henrique M. Rodrigues

A wasp mimicking praying mantis (Mantodea) of the early evolving Mantoididae family was discovered in 2013 at a research station near the Amazon River in Northern Peru. This adult specimen exhibited a striking bright red/orange and black coloration pattern that was undocumented in all known praying mantis species. We tested the status of this new specimen using external morphology, male genital dissections, and geographic distribution. Our findings demonstrate the specimen to represent a new species, Vespamantoida wherleyi gen. nov. sp. nov., that is closely allied with a recently described species, Mantoida toulgoeti Roy, 2010, both of which are included within the newly erected genus. To support our actions, we present high resolution images of museum preserved and living specimens, morphological illustrations, a generic-level distribution map, and recorded video of the behavior of the holotype taken in the field at the time of collection. The bright red/orange coloration contrasted with black markings, the general appearance of a hymenopteran that includes a narrowed wasp waist, and the locomotory patterns and antennal movements mark this newly discovered species as unique among all hymenopteran mimicking Mantoididae as well as all other praying mantises.


Zootaxa ◽  
2009 ◽  
Vol 2311 (1) ◽  
pp. 66-68 ◽  
Author(s):  
T. H. ATKINSON

During the course of an extensive survey of Coleoptera from tropical southern Florida, a specimen of the exclusively Neotropical genus Dryocoetoides was found in flight intercept traps (Atkinson and Peck, 1994; Peck, 1989).  Over the intervening years I have had the opportunity to compare the specimen with material in the U.S. National Museum  and in the S. L. Wood collection (recently transferred to the USNM).   Wood's ( 2007) recent monograph of the South American species of Scolytinae included a key to all the known species of the genus, not only those known from South America.  Based on that key and included descriptions I was able narrow down the possibilities and to borrow selected Schedl types from the Naturhistorisches Museum Wien.  As a result, I have reached the conclusion that this specimen represents an undescribed species.  It is described here to make the name available for a regional monograph of the bark and ambrosia beetles of the southeastern U.S. (Atkinson, in prep.).


Zootaxa ◽  
2017 ◽  
Vol 4291 (3) ◽  
pp. 521 ◽  
Author(s):  
CAROLINE MALDANER ◽  
JOSÉ ALBERTINO RAFAEL

Decimiana gaucha sp. nov. is described from Rio Grande do Sul, Brazil, and illustrated. New geographical records for D. tessellata (Charpentier), D. bolivari (Chopard) and D. hebardi Lombardo retrieved from Brazilian collections and a new key to species, based on male genital characters, are presented. 


2019 ◽  
Vol 13 (1) ◽  
pp. 107-129
Author(s):  
Alan S. Weakley ◽  
R. Kevan Schoonover McClelland ◽  
Richard J. LeBlond ◽  
Keith A. Bradley ◽  
James F. Matthews ◽  
...  

As part of ongoing efforts to understand and document the flora of the southeastern United States, we propose a number of taxonomic changes. In Trichostema, we name a new species, narrowly endemic to maritime grasslands in the Carolinas and warranting formal conservation status and action. In Dichanthelium (Poaceae), we continue the reassessment of taxa formerly recognized in Panicum and provide new combinations along with a new key to taxa in the Dichanthelium scabriusculum complex. In Paspalum (Poaceae), we address the controversial taxonomy of P. arundinaceum and P. pleostachyum and treat the two as conspecific, with P. arundinaceum the correct name. In Portulaca (Portulacaceae), we report the discovery of the Bahamian P. minuta as a native component of the North American flora, occurring in southern Florida.


2015 ◽  
Vol 95 (7) ◽  
pp. 1297-1309 ◽  
Author(s):  
Andrzej Pisera ◽  
Shirley A. Pomponi

Most lithistids occur worldwide in deep-water environments, but can be found in some places in shallow water. They are not well known in the tropical western Atlantic, despite the fact that they were first described in the late 1800s. We report here two species of poorly known theonellid demosponges (Astrophorina), Discodermia dissoluta and Theonella atlantica, and one new species, Theonella wrightae, from the north-west, south-west and south Florida shelf. There is considerable variability in habitus, colour and spiculation in this species. If samples are taken randomly from different specimens and from functionally and structurally different locations on the sponge, the specimens could be mistakenly identified or individuals of the same species could be described as different species. This report increases the number of lithistid sponges reported from the tropical western Atlantic region to 30 species, but our unpublished data suggest a much higher number of species present in this region. It is also the second report of the relatively deep-water (81 m) occurrence of D. dissoluta that is mostly known from depths as shallow as 10–30 m.


Zootaxa ◽  
2017 ◽  
Vol 4236 (3) ◽  
pp. 553 ◽  
Author(s):  
JEFFREY A. COLE

Megatibicen harenosus sp. n. is described from the Mescalero-Monahans shinnery sands of New Mexico and Texas, U.S.A. The new species is diagnosed from similar species, especially M. tremulus which it resembles closely, by male genital morphology, color pattern, calling song, and ecology. Seven characters from the male calling song are described from analysis of field recordings, of which all four temporal song characters are significantly different from M. tremulus. With one of the most southwestern distribution of any Megatibicen species, M. harenosus is a new addition to the rich, endemic, and understudied Mescalero-Monahans shinnery sands biota. The possibility that M. harenosus and M. tremulus are sister species is raised. The ecological, biological, and evolutionary species concepts support species status for M. harenosus, and an hypothesis of peripatric speciation in peripheral isolation is advanced. 


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