Itagonia

Autor:	Shi, Ai-Min, Yuan, Shi-Bin, Wu, Chun-Lian
Rok vydání:	2010
Předmět:	Coleoptera Insecta Arthropoda Tenebrionidae Animalia Biodiversity Itagonia Taxonomy
DOI:	10.5281/zenodo.6201081
Popis:	Key to the species of the genus Itagonia from China 1. Upper edge of inner surface of profemur (Figs 1��5) with tooth near apex.................................................................. 2 - Upper edge of inner surface of profemur with arcuate prominence or obtuse-angled prominence (Figs 6 ��10, 14, 27, 40) near apex................................................................................................................................................................. 7 2. Upper edge of inner surface of profemur with sharp acute-angled tooth (Figs 1��2) near apex................................... 3 - Upper edge of inner surface of profemur with obtuse or rectangular tooth (Figs 3��5) near apex.............................. 4 3. Pronotum widest behind the middle. Anterior 1 / 2 and apical part of outer margin of epipleura visible from above. Ventral surface of protarsomere 1 with hair brush .......................................................... I. provostii (Fairmaire, 1888) - Pronotum widest in the middle. Outer margin of epipleura visible from above nearly along entire length. Ventral sur- face of protarsomeres 1 and 2 with hair brushes .................................................................... I. semenowi Reitter, 1889 4. Less than anterior 1 / 2 and apical part of outer margin of epipleura visible from above.............................................. 5 - Anterior part of outer margin of epipleura not visible from above or only anterior 1 / 3 visible from above or outer margin of epipleura visible from above along entire length......................................................................................... 6 5. Lateral margins of pronotum converging to base with almost straight sides in basal half. Prosternum in front of procoxae oblique to the horizontal plane. Metatibiae straight. .................................................. I. zayica Shi & Ren, 2007 - Lateral margins of pronotum almost parallel-sided in basal half. Prosternum in front of procoxae almost vertical. Metatibiae arcuate ............................................................................................................... I. baxoica Liu & Ren, 2009 6. Pronotum noticeably transverse. Elytral surface with dense irregular prominences. Only apical part of outer margin of epipleura visible from above. ...................................................................................... I. shamaevi Medvedev, 2004 - Pronotum slightly transverse. Elytral surface with punctures. Outer margin of epipleura visible from above along entire length ................................................................................................................. I. szetschwana (Schuster, 1923) 7. Upper edge of inner surface of profemur with arcuate prominence or massive arcuate prominence (Fig. 6 ��8, 14) near apex............................................................................................................................................................................... 8 - Upper edge of inner surface of profemur with obtuse-angled prominence (Fig. 9 ��10, 27, 40) near apex................. 12 8. Antennae longer, when posteriorly extended, noticeably reaching beyond pronotal base. Upper spur of protibiae slightly longer than the lower one. Outer margin of epipleura visible from above along entire length. Ventral surface of protarsomeres 1 and 2 with hair brushes. Ventral surface of mesotarsomere 1 with apical tuft of pale hairs............ ....................................................................................................................................... I. longicornis Shi & Ren, 2007 - Antennae shorter, when posteriorly extended, not reaching or neaely reaching pronotal base. Upper spur of protibiae noticeable longer than the lower one............................................................................................................................ 9 9. Ventral surface of protarsomeres 1 and 2 with hair brushes........................................................................................ 10 - Ventral surface of protarsomeres 1 to 3 with hair brushes.......................................................................................... 11 10. Pronotum widest immediately before the base. Elytral surface coarse, with irregular prominences and sparse punctures. Less than anterior 1 / 2 and apical part of outer margin of epipleura visible from above. Body length 10.6��11.5 mm .............................................................................................................................................. I. tuberculata, sp. nov. - Pronotum widest immediately before the middle. Elytral surface smooth, with dense delicate punctures and fine rugosity. Outer margin of epipleura visible from above along entire length. Body length 9.2��10.2 mm...................... ............................................................................................................................................ I. bisetosa Medvedev, 1998 11. Pronotum surface absence of flattening along outer margins. Outer margin of epipleura in dorsal view concealed by outer convexity of elytra only in apical 1 / 3. Body significantly smaller, length 9.6 mm .. I. trisetosa Medvedev, 1998 - Pronotal surface distinctly widely flattened along outer margins in basal half. Outer margin of epipleura visible from above only in apical part of elytra. Body large, length 10.8��11.7 mm .................................... I. mera Medvedev, 1998 12. Outer margin of epipleura visible from above along entire length............................................................................. 13 - Outer margin of epipleura visible from above in anterior 2 / 5 �� 1 / 2, or in anterior 2 / 5 and apical part....................... 14 13. Pronotum 1.35 times as wide as long. Lateral margins of pronotum not reflexed. Ventral surface of protarsomeres 1 and 2 with hair brushes. ............................................................................................................ I. xinlongensis, sp. nov. - Pronotum 1.24��1.25 times as wide as long. Lateral margins of pronotum distinctly reflexed. Ventral surface of protarsomeres 1 and 2 with apical tuft of pale hairs .................................................................. I. elegans Medvedev, 1998 14. Antennae long, when posteriorly extended, reaching pronotal base. Pronotum weakly transverse, 1.11��1.17 times as wide as long. Outer margin of epipleura visible from above in in anterior 2 / 5 and apical part. Ventral surface of protarsomeres 1 to 3 with hair brushes .............................................................................................. I. medvedevi, sp. nov. - Antennae short, when posteriorly extended, reaching posterior 1 / 3 �� 1 / 4 of pronotum. Pronotum noticeably transverse, 1.25��1.37 times as wide as long. Outer margin of epipleura visible from above in anterior 2 / 5 �� 1 / 2. Ventral surface of protarsomeres 1 and 2 with small hair brushes or apical tuft of pale hairs .. I. cordiformis Shi & Ren, 2007 Published as part of Shi, Ai-Min, Yuan, Shi-Bin & Wu, Chun-Lian, 2010, Three new species of Itagonia Reitter, 1887 (Coleoptera, Tenebrionidae: Blaptini) from Sichuan, China, pp. 57-68 in Zootaxa 2573 on pages 57-58, DOI: 10.5281/zenodo.197440 {"references":["Fairmaire, L. (1888) Diagnoses de quelques Coleopteres recueillis a Pekin par M. Provost. Bulletin de la Societe Entomologique de France, 200 - 201.","Reitter, E. (1889) Insecta, a cl. G. N. Potanin in China et in Mongolia novissime lecta. XIII. Tenebrionidae. Horae Societatis Entomologicae Rossicae, 23, 678 - 710.","Liu, H-Y. & Ren, G-D. (2009) The Chinese species of the genus Itagonia Reitter (Coleoptera, Tenebrionidae, Blaptini), with description of one new species. Acta Zootaxonomica Sinica, 34 (3), 446 - 450.","Medvedev, G. S. (2004) New species of the darkling-beetle Tribe Blaptini (Coleoptera, Tenebrionidae) from India, Nepal, and China. Entomologicheskoe obozrenie, 83 (1), 163 - 189.","Schuster, A. (1923) Neue palaarktische Tenebrioniden (Coleopt.). Wiener Entomologische Zeitung, 40, 156 - 162.","Medvedev, G. S. (1998) New species of tenebrionid beetles of the tribe Blaptini (Coleoptera, Tenebrionidae) from Hissaro-Darvaz Mountains and the Plateau of Tibet. Entomologicheskoe obozrenie, 77 (3), 555 - 586."]}
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