Gergithoides Schumacher, 1915 in Vietnam, with two new species, and taxonomic notes on the genus (Hemiptera: Fulgoromorpha: Issidae)

Jérôme Constant,Hong-Thai Pham

doi:10.5852/ejt.2017.296

Abstract

Two new species of the genus Gergithoides Schumacher, 1915 (Issinae, Hemisphaeriini), G. gnezdilovi sp. nov. from Bidoup-Nui Ba National Park in Central Vietnam and G. nui sp. nov. from Pia-Oac National Park in North Vietnam, are described. These are the only species of the genus formally recorded from Vietnam to date. Habitus, details and male genitalia are illustrated and a distribution map is provided. Four females representing three or four additional species, known from females only, are mentioned and illustrated. Taxonomic and biogeographical updates based on a thorough review of the literature are proposed and discussed for G. carinatifrons Schumacher, 1915, G. rugulosus (Melichar, 1906) and G. undulatus Wang & Che, 2003.

Highlights

Schumacher (1915) described the genus Gergithoides to accommodate one new species from Taiwan: G. carinatifrons Schumacher, 1915 with one variety, uniformis
The present paper aims at describing the two new species and giving an overview of the other Vietnamese material currently available
- G. carinatifrons is currently restricted to Taiwan, is not present in South Korea and its distribution on the Chinese mainland and Japan still needs confirmation

Summary

Introduction

Schumacher (1915) described the genus Gergithoides to accommodate one new species from Taiwan: G. carinatifrons Schumacher, 1915 with one variety, uniformis. The year after, Matsumura (1916) described the genus Daruma to accommodate one new species from Taiwan: D. nitobei Matsumura, 1916. Hori (1969) followed this view but Chan & Yang (1994) did not take. Ishihara’s (1965a) work into account and still considered Darumara as a separate genus and D. nitobei as a good species. Gnezdilov (2009) synonymized again Darumara under Gergithoides, and D. nitobei under G. carinatifrons, without any reference to Ishihara’s (1965a) previous action, and his view was followed by subsequent authors (Rahman et al 2012; Chen et al 2014) Ishihara’s (1965a) work into account and still considered Darumara as a separate genus and D. nitobei as a good species. Gnezdilov (2009) synonymized again Darumara under Gergithoides, and D. nitobei under G. carinatifrons, without any reference to Ishihara’s (1965a) previous action, and his view was followed by subsequent authors (Rahman et al 2012; Chen et al 2014)

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Conclusion