In this study, the parasites of Pyllotreta atra (Coleoptera: Chrysomelidae) in Trabzon were investigated. Samples of P. atra were collected in different localities of Trabzon. Three different types of parasites from P. atra observed are as follows: Gre-garine (Apicomplexa), Nematode (Tylenchida: Allantonematidae) and larvae of certain parasitoids. The most abundant infection found in this study...

Cuticle ultrastructure of Criconemella curvata and C. sphaerocephala females is presented; males were available only in the second species. Ultrathin sections revealed three major zones: cortical, median, and basal. The cortical zone in the females consists of an external and internal layer. In C. curvata the external layer is trilaminate and at each annule it is covered by a multilayered cap. ...

1. ACEDO, J. R., and R. A. R O H D E . 1971. His tochemica l root pa thology of Brassica oleracea capi ta ta L. infected by Pra ty lenchus pene t rans (Cobb) Filipjev and S c h u u r m a n s Stekhoven (Nematoda : Tylenchida) . J. Nemato l . 3:62-68. 2. B H A T I A , I. S., J. S INGH, and K. L. BAJAJ. 1973. A new chromogen ic r eagen t for the detect ion of phenol ic c o m p o u n d s on th inla...

Thripenema fuscum n. sp., a parasite of the tobacco thrips, Frankliniella fusca, is described and illustrated from material collected from peanut (Arachis hypogaea) in Marianna, Florida. Thripenema fuscura can be distinguished from all other previously described Thripenema spp. by the dorsal curvature of the male and the presence of a stylet in the male. Highest parasitism rates of F. fusca by ...

A new genus (Cerchnotocriconenta) and three new species (C. psephinum, Hemicycliophora amchitkaensis, and Paratylenchns amundseni) are described from Adak and Amchitka Islands in the Aleutian chain. The new genus differs from all other criconematid genera in having irregular, convex sculpturing consisting of small, oval plates on the anterior and posterior regions of each annule, with the mid-a...

We used nucleotide sequences of the large subunit ribosomal genes (26S rDNA) to examine evolutionary relationships among species of the genus Pratylenchus (Order: Tylenchida, Family: Pratylenchidae), commonly known as root-lesion nematodes. Ten species of Pratylenchus were studied including, P. penetrans, P. crenatus, P. minyus, P. vulnus, P. thornei, P. musicola, P. coffeae, P. hexincisus, P. ...

A new record species Heterodera ripae was found in the rhizosphere soil of nettle (Urtica sp.) on the bank of the Mangniu River in Shenyang City, Liaoning Province, China. The new record species can be characterized by vulval cone bifenestrate with circular or subcircular semifenestrae, vulval slit length averaging 34.2 μm, vulval bridge mostly broad, underbridge weak, bullae absent; the second...

Dolichodorus miradvulvus n. sp. from Anubias nana Engler in Florida is described and illustrated. The female is characterized by deep grooves in the cuticle on the ventral surface just anterior and posterior to the vulva, and by transversely elongate pouches anterior and posterior to the vulva. Both sexes have a constricted area of the stylet shaft just anterior to the knobs, and on the male th...