A mermithid nematode, Cretacimermis aphidophilus sp. n. (Nematoda: Mermithidae), parasitising an aphid (Hemiptera: Burmitaphididae) in Myanmar amber: a 100 million year association

Nematology ◽  
2017 ◽  
Vol 19 (5) ◽  
pp. 509-513 ◽  
Author(s):  
George O. Poinar

A new species of fossil mermithid,Cretacimermis aphidophilussp. n. (Nematoda: Mermithidae), is described from the primitive extinct aphid,Caulinus burmitis(Hemiptera: Burmitaphididae), in mid-Cretaceous Myanmar amber. Aphid parasitism by mermithid nematodes is rare today with only two known cases involving root-feeding aphids. Based on the habits of the parasitised extant aphid hosts, it is likely that the fossil aphid was also a root parasite and encountered the infective stage mermithid in the soil. Such fossils provide rare glimpses of nematode-host associations from the distant past and provide minimum dates for the appearance of specific mermithid clades.

Zootaxa ◽  
2018 ◽  
Vol 4388 (3) ◽  
pp. 425 ◽  
Author(s):  
ANKITA GUPTA ◽  
DONALD L. J. QUICKE

Acanthormius indicus Gupta & Quicke sp. nov. is described and illustrated. It is a gregarious larval parasitoid of an unidentified bagworm moth caterpillar (Lepidoptera: Psychidae) from southern India. The biology and host associations of members of subfamily Lysiterminae are also discussed. 


Zootaxa ◽  
2008 ◽  
Vol 1751 (1) ◽  
pp. 1 ◽  
Author(s):  
M. GATES ◽  
G. DELVARE

Eurytoma erythrinae Gates and Delvare, new species, is described and illustrated. This species was reared from fieldcollected galls on Erythrina spp. (Fabaceae) induced by Quadrastichus spp. (Hymenoptera: Eulophidae), in Tanzania, Ghana, and South Africa. It is compared with very similar African species, Eurytoma radicicola Risbec. Afrotropical species classified in Eurytoma are reviewed and twenty-seven new combinations are proposed: Aximopsis acaciacola (Hedqvist) comb. n., A. caryedocida (Rasplus) comb. n., A. lamtoensis (Rasplus) comb. n., A. mateui (Hedqvist) comb. n., A. mimosarum (Rasplus) comb. n., A. obocki (Risbec) comb. n., A. oryzivora (Delvare) comb. n., A. saharensis (Hedqvist) comb. n., A. senegalensis (Risbec) comb. n., A. tropicana (Risbec) comb. n., Bruchophagus conapionis (Rasplus) comb. n., Fronsoma ellenbergeri (Risbec) comb. n., Gibsonoma amborasahae (Risbec) comb. n., G. aphloiae (Risbec) comb. n., G. bararakae (Risbec) comb. n., G. eugeniae (Risbec) comb. n., G. mandrakae (Risbec) comb. n., G. pauliani (Risbec) comb. n., G. plectroniae (Risbec) comb. n., G. tavolae (Risbec) comb. n., Philolema arachnovora (Hesse) comb. n., P. arnoldi (Waterston) comb. n., P. bambeyi (Risbec) comb. n., P. braconidis (Ferrière) comb. n., and P. syleptae (Ferri_re) comb. n., Phylloxeroxenus cressoni (Howard) comb. n., and Sycophila plectroniae (Risbec) comb. n. Lectotypes are designated for ten species: Eurytoma perineti Risbec, E. radicicola Risbec, E. toddaliae Risbec, Gibsonoma amborasahae (Risbec), G. aphloiae (Risbec), G. eugeniae (Risbec), G. mandrakae (Risbec), G. pauliani (Risbec), G. tavolae (Risbec), and P. bambeyi (Risbec). We also provide a checklist of Afrotropical species that are or were classified in Eurytoma and tabulate the known host/associations of these species with references.


Zootaxa ◽  
2007 ◽  
Vol 1619 (1) ◽  
pp. 61-68 ◽  
Author(s):  
SERGUEI V. TRIAPITSYN ◽  
GUILLERMO A. LOGARZO ◽  
EDUARDO G. VIRLA ◽  
JESSE H. DE LEÓN

Specimens of Gonatocerus virlai S. Triapitsyn, Logarzo & de León sp. n., which belongs to the ater species group of Gonatocerus Nees (Mymaridae), were reared in Argentina mostly from wild-collected and sentinel eggs of the sharpshooter Tapajosa rubromarginata (Signoret) (Cicadellidae: Cicadellinae: Proconiini) on citrus and corn plants. The distribution and host associations (both natural and laboratory) of G. virlai are given. Under quarantine laboratory conditions in the USA, it was successfully reared for many generations on an unnatural host, the glassy-winged sharpshooter, Homalodisca vitripennis (Germar).


1977 ◽  
Vol 55 (12) ◽  
pp. 2011-2017 ◽  
Author(s):  
B. Mondet ◽  
G. O. Poinar Jr. ◽  
J. Bernadou

The present communication describes a new species of mermithid nematode, Isomermis lairdi, found parasitizing blackflies in the Ivory Coast, West Africa. This nematode is the most common mermithid parasite of Simulium damnosum Theobald and occurs in the larval, pupal, and adult stages of this blackfly in streams of various sizes. The diagnostic characters of the adults of I. lairdi are (1) terminal mouth. (2) strongly S-shaped vagina, (3) ratio of spicule length to anal body width (1.7–2.8), and (4) circular amphids and amphidial openings.The postparasitic juveniles of I. lairdi differ from those of I. tansaniensis Rubtsov, 1972, in having three or four rows of cells in the lateral cords and a longer tail appendage in the male.This is the third species of mermithid nematode described from blackflies (including Simulium damnosum) in West Africa, and the first of the genus.


1998 ◽  
Vol 29 (1) ◽  
pp. 25-28 ◽  
Author(s):  
Yoshihisa Abe

AbstractSynophromorpha Ashmead is a genus of cynipid inquilines associated with Diastrophus galls on Rubus bushes. All described species, except S. tobiasi which doubtfully belongs to the genus, are restricted to the Nearctic Region. Synophromorpha taketanii sp. n., a fifth species of this genus, is described from Japan. This is the first reliable record of the genus from the Palaearctic Region and reveals that Synophromorpha has a disjunct distribution. Adults of S. taketanii emerged from stem galls on Rubus palmatus. Study of Periclistus natalis and P. quinlani showed that Synophromorpha and Periclistus intergrade. It is considered preferable to retain these two as separate genera on the basis of their host associations.


Zootaxa ◽  
2008 ◽  
Vol 1962 (1) ◽  
pp. 65-68 ◽  
Author(s):  
ZI-YING WANG ◽  
JIN-JUN WANG

Many regard the Pteronyssidae as a subfamily of Avenzoariidae Oudemans, 1905, but Mironov (2001) recently recognized the group as a family, based on the unique character of a ventral membrane on tarsi I, and other distinguishing features of the Pteronyssinae Oudemans, 1941 (vide: Gaud & Atyeo 1996) and the specificity their host associations. To date, 140 species in 23 genera are described (Mironov 2001, 2005). The genus Timalinyssus was established by Mironov (2001) to accommodate two species collected from babblers (Passeriformes: Timaliidae). It is closely related to Mouchetia Gaud but differs in the following characters: prodorsal shield is fused with the scapular shields, c2 setiform and short in both sexes; tarsi III are cone-like with acute apex in male; opisthosomal lobes are long and separated by narrow terminal cleft in female (Gaud & Atyeo 1996; Mironov 2001).


Mycologia ◽  
1987 ◽  
Vol 79 (1) ◽  
pp. 148 ◽  
Author(s):  
James F. White ◽  
Garry T. Cole ◽  
Gareth Morgan-Jones

Nematology ◽  
2020 ◽  
Vol 22 (6) ◽  
pp. 655-658
Author(s):  
George O. Poinar ◽  
Douglas C. Currie

Summary A new species of fossil mermithid, Heydenius simulphilus sp. n. (Nematoda: Mermithidae), is described from two parasitic juvenile specimens adjacent to a male black fly (Diptera: Simuliidae) in Baltic amber. It is proposed that the nematodes emerged from their developmental sites in the haemocoel of the black fly host through a wound in the abdomen of the latter, as indicated by the release of a droplet of haemolymph and damaged cuticle. Various internal structures of the nematodes are identified and related to those found on extant developing mermithids. This is the first fossil record of mermithid parasitism of a black fly.


Zootaxa ◽  
2017 ◽  
Vol 4324 (2) ◽  
pp. 285 ◽  
Author(s):  
ALLEN C.G. HEATH ◽  
RICARDO L. PALMA

The tick Ixodes eudyptidis Maskell, 1885 has long been recognised as a parasite of penguins and a number of other seabird hosts and, despite a convoluted taxonomic history, there has been no disagreement as to its validity. The opportunity to examine a larger series of ticks from a wider range of hosts than previously available has led to the finding of a morphologically close and hitherto undescribed species, which is herewith described and named as Ixodes laridis sp.nov. The new species has a superficial similarity to its sibling, I. eudyptidis, but on close examination it displays a number of morphological differences that justify its taxonomic separation. Also, the hosts of the new species are principally gulls, gannets and cormorants, while I. eudyptidis is restricted to penguins. The recognition of this new species has implications for faunal lists in both New Zealand and Australia, as well for seabird health, as it appears that I. eudyptidis does not cause paresis as originally thought, but it is I. laridis that causes potentially fatal paralysis in its hosts.        A taxonomic history and review of I. eudyptidis and keys to all stages of the species of Ixodes recorded from New Zealand, and from Australian seabirds are given. Reference to Ixodes kohlsi Arthur, 1955, a species currently restricted to Australia, is made for comparative purposes because of the similarity of both its morphology and host associations with the other species under consideration. Aspects of the distribution, zoogeography, hosts and ecology of all three species of ticks are discussed. 


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