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Harbhajan Kaur,Vikas SUMAN,Rajdeep KAUR 한국곤충학회 2010 Entomological Research Vol.40 No.1
Although the karyotypes of twelve species of Dieuches Dohrn, 1860 belonging to Rhyparochrominae have been described so far, there is no information about heterochromatin and its characterization in terms of base composition for any of the species. In the present paper, C-banding and fluorescent banding have been applied for the first time to three species of Dieuches: D. uniguttatus, D. insignis (2n = 12 = 8A + 2m + XY) and D. coloratus (2n = 14 = 10A + 2m + XY). Dieuches uniguttatus and D. insignis show distinct terminal C-bands along with a few interstitial bands in all the autosomal bivalents, whereas in D. coloratus, one autosomal pair is almost completely heterochromatic, three show C-positive bands while one is totally euchromatic. The sex chromosomes too show heterogeneity in distribution of C-heterochromatin among three Dieuches species. Characterization of heterochromatin in D. uniguttatus and D. insignis using DAPI/CMA3 staining reveals that in D. uniguttatus, C- heterochromatin blocks of all the autosomal bivalents, which are predominantly A–T rich, whereas in D. insignis, these are rich both in A–T and G–C. In D. uniguttatus, sex chromosomes X and Y have localized G–C rich regions whereas in D. insignis, these are scattered in X and absent in Y. As variations in the heterochromatin represent the main source of karyological differentiation among and within species, it seems that there occurred extensive redistribution of heterochromatin within the complement as the three species evolved. There is need for cytological details of more species to understand evolutionary aspects in the genus Dieuches.
Taxonomic Revision of the Genus Paromius Fieber from Korea
Hwang, Jong Seok,Kwon, Jin Hyung,Suh, Sang Jae,Kwon, Yong Jung Institute of Agricultural Science and Technology 2014 慶北大農學誌 Vol.32 No.1
The true bug genus Paromius from Korea is revised taxonomically. It comprises the following three species: P. exiguus (Distant, 1883), P. jejunus (Distant, 1883) and P. gracilis (Rambur, 1839). Among them, P. jejunus (Distant, 1883) is recorded for the first time in Korea. The pest bug injurious to rice culture, known as P. exiguus (Distant,1883), has been recorded erroneously by the previous authors from Korea due to the misidentification, which is rectified here with the support of morphological evidence. All the species of this genus are classified with proper redescriptions, and an identification key to species is provided with illustrations.
Taxonomic Revision of the Genus Paromius Fieber from Korea
Jong Seok Hwang,Jin Hyung Kwon,Sang Jae Suh,Yong Jung Kwon 경북대학교 농업생명과학대학 2014 Current Research on Agriculture and Life Sciences Vol.32 No.1
The true bug genus Paromius from Korea is revised taxonomically. It comprises the following three species: P. exiguus (Distant, 1883), P. jejunus (Distant, 1883) and P. gracilis (Rambur, 1839). Among them, P. jejunus (Distant, 1883) is recorded for the first time in Korea. The pest bug injurious to rice culture, known as P. exiguus (Distant,1883), has been recorded erroneously by the previous authors from Korea due to the misidentification, which is rectified here with the support of morphological evidence. All the species of this genus are classified with proper redescriptions, and an identification key to species is provided with illustrations.