Machaerotypus Uhler 1896

Genus Machaerotypus Uhler, 1896 Figs 1–6, 8 Machaerotypus Uhler, 1896: 30. Machaerotypus – Goding 1931: 303. — Kato 1940: 147. — Funkhouser 1950: 207. — Metcalf & Wade 1965: 416. — Chou & Yuan 1981: 103. — McKamey 1998: 70. — Yuan & Chou 1988: 72; 2002: 254. Type species Machaerotypus sellatus Uhler, 1896 = M. sibirica (Lethierry, 1896). Diagnosis Body usually with bright red markings. Head with vertex slightly to strongly arcuate dorsally, ventral margins oblique. Ocelli ovoid, closer to inner margin of eyes than to each other. Suprahumeral horns rounded, each with crescent-shaped ridge, not extended laterad of humeral angles. Posterior pronotal process mostly concealing scutellum, depressed at base, flat or with slight bulge in center. Humeral angle triangular and stout. Callosity smooth or slightly bristly. Scutellum exposed on both sides and at apex. Forewing multi-striped or hyaline, base with opaque sclerotization. Metathoracic tibia with three longitudinal rows of cucullate setae, trochanter without teeth. Remarks Compared with Yuan & Chou’s (2002) record, pronotum characteristics of four species, M. subinermis, M. ishiharai, M. stigmosus Li & Chen sp.nov., and M. nodulus Li & Chen sp.nov., were supplemented, and the key to species of Machaerotypus was updated based on Yuan & Chou (2002). Host plant Unknown. Distribution China, Japan, Russia, Korea (Fig. 7). Checklist of species of Machaerotypus Uhler, 1896 M. arisanus (Kato, 1928); Japan, China (Taiwan). M. camelliae Chou & Yuan, 1981; China (Yunnan). M. ishiharai Kato, 1940; Japan (Honshu). M. mali Chou & Yuan, 1981; China (Shaanxi). M. nodulus Li & Chen sp. nov.; China (Guizhou). M. rubromarginatus Kato, 1940; China (Shaanxi, Liaoning). M. rubronigris Funkhouser, 1938; China (Zhejiang, Gansu). M. semirubronigris Yuan & Chou, 1992; China (Sichuan). M. sibiricus (Lethierry, 1876); Russia; Korea; Japan; China (Heilongjiang, Beijing, Shanxi, Shaanxi, Sichuan). M. stigmosus Li & Chen sp. nov.; China (Guizhou). M. subinermis Lindberg, 1927; Russia; Korea; China (Gansu, Heilongjiang). M. taibaiensis Yuan, 2002; China (Shaanxi). M. yananensis Chou & Yuan, 1981; China (Shaanxi). Key to species of Machaerotypus Uhler, 1896 (based on Chou & Yuan 2002) 1. Body or pronotum with obviously reddish markings....................................................................... 2 – Body dark or brown.......................................................................................................................... 8 2. Reddish markings on pronotum trident shaped (Fig. 8A, a)......... M. camelliae Chou & Yuan, 1981 – Reddish markings on pronotum non-trident shaped......................................................................... 3 3. Half of suprahumeral horn reddish (Fig. 8D, d)................ M. semirubronigris Yuan & Chou, 1992 – Suprahumeral horn entirely reddish.................................................................................................. 4 4. Posterior pronotal process with one reddish band (Fig. 8B, b).... M. rubronigris Funkhouser, 1938 – Reddish markings on posterior pronotal process more extensive, Y-shaped.................................... 5 5. Anterior parts of reddish Y-shaped pronotal marking enlarged (Fig. 8G, g)...................................................................................................................................................... M. mali Chou & Yuan, 1981 – Anterior parts of reddish Y-shaped marking narrow......................................................................... 6 6. Posterior pronotal process almost entirely reddish (Fig. 8C, c)..... M. rubromarginatus Kato, 1940 – Center of posterior pronotal process in dorsal view brown or black................................................ 7 7. Forewing with a hyaline transverse band near center............................... M. taibaiensis Yuan, 2002 – Forewing brown and slightly shallow edge................................ M. yananensis Chou & Yuan, 1981 8. Forewing veins with small nodules.................................................................................................. 9 – Forewing veins without nodules..................................................................................................... 10 9. Posterior pronotal process flat (Fig. 8J)............................................. M. subinermis Lindberg, 1927 – Posterior pronotal process with dorsal margin arched (Fig. 8M)...... M. nodulus Li & Chen sp. nov. 10. The apex of posterior pronotal process curved (Fig. 8L).......................... M. arisanus (Kato, 1928) – The apex of posterior pronotal process flat......................................................................................11 11. Posterior pronotal process with two depressions (Fig. 8I).......................... M. ishiharai Kato, 1940 – Posterior pronotal process with one depression.............................................................................. 12 12. Posterior pronotal process flat or slightly expanded (Fig. 8K)............ M. sibiricus (Lethierry, 1876) – Posterior pronotal process obviously expanded in lateral view (Fig. 8H).................................................................................................................................................. M. stigmosus Li & Chen sp. nov.
Published as part of Yang, Lin, Long, Jian-Kun, Chang, Zhi-Min & Chen, Xiang-Sheng, 2022, Two new species of the treehopper genus Machaerotypus Uhler, 1896 from China (Hemiptera: Membracidae: Centrotinae), pp. 64-79 in European Journal of Taxonomy 826 (1) on pages 65-67, DOI: 10.5852/ejt.2022.826.1835, http://zenodo.org/record/6761661
{"references":["Uhler P. R. 1896. Summary of the Hemiptera of Japan, presented to the United States National Museum by professor Mitzukuri. Proceedings of the United States National Museum 1108: 255 - 297. https: // doi. org / 10.5479 / si. 00963801.1108.255","Goding F. W. 1931. Classification of the Old World Membracidae. Journal of the New York Entomological Society 39: 299 - 313.","Kato M. 1940. Notes on Membracidae from Easterm Asia. Entomological World 8: 1 - 21.","Funkhouser W. D. 1950. Homoptera. Fam. Membracidae. In: Wytsman P. (dir.) Genera Insectorum Fasc. 208. Luis Desmet-Verteneuil, Bruxelles. Available from https: // www. biodiversitylibrary. org / page / 18036561 [accessed 22 Nov. 2021].","Metcalf Z. P. & Wade V. 1965. General Catalogue of the Homoptera. A Supplement to Fascicle I - Membracidae of the General Catalogue of the Hemiptera. Membracoidea in two Sections. North Carolina State University, Raleigh. https: // doi. org / 10.5962 / bhl. title. 6822","Chou I. & Yuan F. 1981. A discussion on the genus Machaerotypus Uhler with descriptions of its Chinese species (Homoptera: Membracidae). Entomotaxonomia 3 (2): 103 - 110.","McKamey S. H. 1998. Taxonomic catalogue of the Membracoidea (exclusive of leafhoppers): Second supplement to fascicle 1 - Membracidae of the general catalogue of Hemiptera. Memoirs of the American Entomological Institute 60: 1 - 377.","Yuan F. & Chou I. 1988. Advances in the research of systematics of Membracoidea from China (Homoptera: Auchenorrhyncha). In: Vidano C. & Arzone, A. (eds) Proceedings of 6 th Auchenorrhyncha Meeting: 71 - 78. Consiglio Nazionale delle Ricerche, Turin.","Yuan F. & Chou I. 2002. Fauna Sinica. Insecta Vol. 28. Homoptera Membracoidea. Science Press, Beijing.","Kato M. 1928. Notes on Formosan Membracidae, with descriptions of one new genus and some new species. Insect World 32: 2 - 15.","Yuan F., Chou I. & Cui Z. X. 1992. Homoptera: Membracoidea. In: Chen S. - X. (ed.) Insects of the Hengduan Mountains Region. Vol. 1: 192 - 219. Science Press, Beijing.","Lindberg H. 1927. Zur Kenntnis der palaarktischen Cicadina IV. Notulae Entomologicae 7: 23 - 30."]}