Discolamium capitulum sp. n., and observations on D. brachyurum Siddiqi and D. upum Baqri & Jairajpuri (Nematoda: Dorylaimida).
Shahina F., Musarrat A. R., Siddiqi M. R.
Author Affiliation: National Nematological Research Centre, University of Karachi, Karachi-75270, Pakistan.
Pakistan Journal of Nematology 23 : 29-40
Abstract : Discolamium capitulum sp. nov. as well as D. brachyurum and D. upum are described and illustrated. D. capitulum was collected from soil around the roots of mango in Karachi University campus and from rice fields in Larkana and Dokri, Sindh, Pakistan. It is characterized by body length of female L=1.6-2.0 mm; a=23.3-32.5; b=4.2-5.2; c=44.6-52.0; V=45-59.0%. Males have 1.3-1.7 mm body length; tail=32-38.4; spicules=70-72 µm lateral guiding piece 19-20 µm, PO=9-10. It is similar to D. jairajpurii and D. mukhtarpuriense but differs from both in body length, a and c? values (L=1.6-2.0 mm; a=23-32 and c?=0.8-1.2). D. brachyurum and D. upum collected from the soil around roots of sugarcane and wheat, respectively, in Sindh province are newly recorded from Pakistan. These are briefly described and illustrated. Males of D. upum are described for the first time.