Epeurysa distincta Distant, 1912

Park, Sanghyo & Lee, Wonhoon, 2024, First record of Epeurysa distincta Huang & Ding (Hemiptera, Delphacidae, Delphacinae) from South Korea, with an illustrated key to the Korean Tropidocephalini species, Biodiversity Data Journal 12, pp. e 134165-e 134165 : e134165-

Epeurysa distincta Distant, 1912

Epeurysa distincta Huang & Ding, 1979: 178

Epeurysa infumata Yang & Yang, 1986: 47

Materials

Type status: Other material. Occurrence: recordedBy: Sanghyo Park; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 3221F525-BC8F-5988-B92E-23704F586070; Taxon: scientificName: Epeurysa distincta ; kingdom: Animal; phylum: Arthropoda; class: Insecta; order: Hemiptera ; family: Delphacidae ; genus: Epeurysa ; Location: country: South Korea; stateProvince: Jeju-do; municipality: Seogwipo-si; locality: 791, Seohong-dong ; georeferenceProtocol: label; Identification: identifiedBy: Sanghyo Park; dateIdentified: 2023; Event: eventDate: 07-05 - 2023; Record Level: language: en; collectionCode: Insects; basisOfRecord: PreservedSpecimen

Type status: Other material. Occurrence: recordedBy: Sanghyo Park; individualCount: 2; sex: male; lifeStage: adult; occurrenceID: D4E3398D-0BA2-5D69-9514-2EEB0D4E5524; Taxon: scientificName: Epeurysa distincta ; kingdom: Animal; phylum: Arthropoda; class: Insecta; order: Hemiptera ; family: Delphacidae ; genus: Epeurysa ; Location: country: South Korea; stateProvince: Jeju-do; municipality: Seogwipo-si; locality: 18-2, Topyeong-ro ; georeferenceProtocol: label; Identification: identifiedBy: Sanghyo Park; dateIdentified: 2023; Event: eventDate: 07-05 - 2023; Record Level: language: en; collectionCode: Insects; basisOfRecord: PreservedSpecimen

Description

Body length of male 3.8 mm (with tegmina). General colouration brown. Vertex very short, about two times wider than the length, lateral margins more or less divergent apically and also basally, carinae comparatively indistinct. Frons brown, width more than half the frons length, genae and clypeus brown. Pronotum and mesonotum tricarinate. Fore-wings transparent and light brown, the veins brown, distinctly tinged two dark brown spot in clavus and middle of apex portion; abdominal segments dark brown (Figs 1 a , 2 a ).

Male genitalia. Pygofer much longer ventrally than dorsally, laterodorsal angles not produced ventrally, medioventral process two times longer than lateroventral processes, apically ovoid. Genital stylet strongly outwardly curved and divided into two branches in the middle. Anal segment with two small processes. Aedeagus with two branched, curved and both narrowing towards the apex (Figs 3 a , 4 a ).

Measurements. Male macropterous form (n = 3). Body length without tegmina: 2.46 mm; body length with tegmina: 3.84 mm; body width: 0.94 mm; head length: 0.34 mm; head width (including eyes): 0.74 mm; 1 st antennal segment length: 0.06 mm; 2 nd antennal segment length: 0.16 mm; vertex length: 0.19 mm; vertex width: 0.34 mm; frons length: 0.44 mm; frons width: 0.35 mm; pronotum length: 0.24 mm; pronotum width: 0.76 mm; mesonotum length: 0.64 mm; mesonotum width: 0.70 mm.

Diagnosis

This species is very similar to Epeurysa nawaii . However, it is distinguished by the strongly outwardly curved genital stylet and the brown fore-wing veins with darker sockets for the setae (Fig. 5).

Distribution

Korea (new record), Japan ( Fujinuma 2016), China (Hunan, Taiwan, Guizhou, Yunnan) ( Ding 2006).

Host plants

Phyllostachys nigra var. henonis Stapf ex Rendle. ( Poaceae ) (in this study).

Figures

Figure 1 a. Epeurysa distincta, dorsal and lateral view;

Figure 2 a. Epeurysa distincta, face;

Figure 3 a. Epeurysa distincta, ventral view;

Figure 4 a. Epeurysa distincta, lateral view;