Beris hirotui Ouchi , 1943

Lee, Junho & Suh, Sang Jae, 2022, First record of the soldier fly genus Beris Latreille (Diptera, Stratiomyidae) from Korea, with designation of two new synonyms, Biodiversity Data Journal 10, pp. 80487-80487 : 80487

Beris hirotui Ouchi, 1943

Beris hirotui Ôuchi, 1943 - Ôuchi 1943: 487 (Type-locality: Japan). ♀ Holotype [SCI].

Beris hisotui (sic): Ôuchi 1943: 487.

Beris hirotsui (sic): Nagatomi and Tanaka 1972: 98; Nartshuk and Rozkošný 1975: 85; Rozkošný and Nartshuk 1988: 46; Yang and Nagatomi 1992: 167; Li et al. 2009: 130.

Materials

Type status: Other material. Occurrence: individualCount: 3; sex: 3 males; lifeStage: adult; Taxon: scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gyeongsangbuk-do; locality: Gunwi-gun , Bugye-myeon , Dongsan-ri , Mt. Palgongsan , 36°01'46"N, 128°40'28"E ; Identification: identifiedBy: J Lee; dateIdentified: 2020; Event: samplingProtocol: sweeping; eventDate: V/27/2020; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 1; sex: 1 male; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Yeongwol-gun , Yeongwol-eup , Samok-ri, Donggang River, 37°13'57"N, 128°30'55"E ; Identification: identifiedBy: J Lee; dateIdentified: 2020; Event: samplingProtocol: malaise trap; eventDate: V/29/2020; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 4; sex: 3 males, 1 female; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Jeongseon-gun , Yeoryang-myeon , Gujeol-ri, Mt. Sangwonsan, 37°32'18"N, 128°39'15"E ; Identification: identifiedBy: J Lee; dateIdentified: 2020; Event: samplingProtocol: sweeping; eventDate: V/30/2020; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 1; sex: 1 male; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Pyeongchang-gun , Jinbu-myeon , Jangjeon-ri, Mt. Gariwangsan, 37°27'59"N, 128°32'18"E ; Identification: identifiedBy: J Lee; dateIdentified: 2020; Event: samplingProtocol: malaise trap; eventDate: V/30/2020; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 31; sex: 8 males, 23 females; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Pyeongchang-gun , Daegwallyeong-myeon , Hoenggye-ri, Seonjaryeong, 37°41'45"N, 128°45'15"E ; Identification: identifiedBy: J Lee; dateIdentified: 2020; Event: samplingProtocol: sweeping; eventDate: V/31/2020; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 1; sex: 1 male; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Jeongseon-gun , Yeoryang-myeon , Gujeol-ri, Mt. Nochusan, 37°31'08"N, 128°46'42"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: V/20/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 2; sex: 2 males; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Jeongseon-gun , Yeoryang-myeon , Yeoryang-ri, Mt. Banryusan, 37°27'05"N, 128°44'08"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: V/21/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 1; sex: 1 female; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Pyeongchang-gun , Jinbu-myeon , Jangjeon-ri, Mt. Gariwangsan, 37°27'59"N, 128°32'18"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: V/22/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 14; sex: 10 males, 4 females; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Daegu-si ; locality: Gachang-eup , Jeongdae-ri, Mt. Biseulsan, 35°43'54"N, 128°32'53"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: V/30/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 3; sex: 2 males, 1 female; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Pyeongchang-gun , Jinbu-myeon , Duil-ri, Mt. Odaesan, 37°41'09"N, 128°34'25"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: VI/04/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 22; sex: 7 males, 15 females; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Pyeongchang-gun , Daegwallyeong-myeon , Hoenggye-ri, Seonjaryeong, 37°41'45"N, 128°45'15"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: VI/04/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 2; sex: 2 males; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Pyeongchang-gun , Daegwallyeong-myeon , Yongsan-ri, Mt. Barwangsan, 37°38'18"N, 128°40'09"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: VI/05/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 5; sex: 4 males, 1 female; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Jeongseon-gun , Hwaam-myeon , Morun-ri, Mt. Gwangdaesan, 37°18'52"N, 128°49'10"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: VI/09/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 3; sex: 3 males; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Jeongseon-gun , Nam-myeon , Mureung-ri, Mt. Duwibong, 37°14'05"N, 128°45'35"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: VI/10/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence : individualCount: 6; sex: 5 males, 1 female; lifeStage: adult; Taxon : scientificName: Beris hirotui; Location : country: Republic of Korea; stateProvince: Gangwon-do ; locality: Jeongseon-gun , Sabuk-eup , Sabuk-ri, Mt. Baekunsan, 37°11'23"N, 128°48'38"E ; Identification: identifiedBy: J Lee; dateIdentified: 2021; Event: samplingProtocol: sweeping; eventDate: VI/10/2021; Record Level: language: en; institutionCode: KNU; basisOfRecord: PreservedSpecimen

Description

Male. Body length (excluding antennae): 5.9-7.4 mm; wing length: 5.0-6.0 mm. Head: Black and subshining; compound eyes densely covered with pale yellow hairs; occiput and vertex with pale recumbent hairs; postocular areas towards lower margin of eye slightly pale pollinose; face black pilose; lower frons with short black hairs; antennae short, apex of pedicel and inner surface of flagellomeres 2-6 tinged with pale yellow; flagellum 1.1-1.2 times as long as scape and pedicel combined; flagellomeres 3-6 swollen, about 1.5-1.6 times wider than pedicel (Fig. 4 C). Thorax: Metallic green, scutum tomentose with pale yellow hairs; postpronotal lobe tinged with yellow; central part of anepisternum, katepisternum, except upper part and meron nearly bare. Legs: Mostly yellowish-brown, but the following parts tinged dark brown: fore and hind coxa, except apex, apical portion of hind femur, except extreme apex, hind tibia, except base, apices of tarsomeres 1 (but hind one slightly pale), and tarsomeres 2-5; hind tarsomere 1 about 2.4-2.6 times wider than hind tibia (Fig. 4 A). Wings: Tinged with yellowish-brown; base of M1 and M2 convergent (Fig. 4 E). Abdomen: Dark brown to black, lateral margin of tergites with conspicuously long pale yellow hairs; sterna wholly densely covered with recumbent pale yellow hairs; epandrium long, median margin quite concave, anterior margin semicircular; long surstyli inserted posterolaterally, strongly curved inwards; cerci nearly parallel-sided and straight; proctiger narrow and triangular (Fig. 4 G); gonocoxite longer than wide, median projection incised rather than protruding, subquadrate; gonostyli clearly bent inwards; phallus comparatively thick, bifurcate; lobes bent and with diverging apices, three dorsal processes present (Fig. 4 F, H).

Female. Similar to males, but differing as follows: Body length (excluding antennae): 5.0-6.2 mm; wing length: 4.4-5.8 mm. Head: Hairs on compound eyes relatively shorter and fewer than in males; occiput properly visible in anterior view; inner surface of flagellum, except apex tinged with brown to reddish-brown; flagellum nearly 1.3-1.5 times as long as scape and pedicel combined (Fig. 4 D). Thorax: Hairs on side of scutum shorter than in males. Legs: Distal part of hind tibia paler rather than dark brown; hind tarsomere 1 less swollen than in males (Fig. 4 B). Abdomen: Hairs on lateral margin of tergites shorter than in males.

Diagnosis

This species can be distinguished from other congeners by the following key diagnostic characters: flagellum about 1.5 to 2 times as long as scape (Fig. 4 C), hind tarsomere 1 about 2.5 times wider than hind tibia (Fig. 4 A) (males); flagellomere 8 less than 2 times as long as wide (Fig. 4 D) (females). This species is particularly similar to the Japanese species, B. nebulosa Nagatomi and Tanaka, 1972, but the latter species has characteristics as follows: flagellum about 2.4 times as long as scape, hind tarsomere 1 as wide as hind tibia (males); flagellomere 8 more than 2 times as long as wide ( Nagatomi and Tanaka 1972:112).

Distribution

Korea (new record: Gangwon-do, Gyeongsangbuk-do, Daegu-si), China (Hubei, Sichuan), Japan (Hokkaido, Honshu, Shikoku, Kyushu), Russia (Far East: Siberia) and Taiwan.

Notes

See Nagatomi and Tanaka 1972 for detailed description.

Figures

Figure 4. Beris hirotui Ouchi, 1943: A Male habitus, lateral view; B Female habitus, lateral view; C Male head, lateral view; D Female head, lateral view; E Male wing; F Genital capsule, dorsal view; G Epandrium, cerci and proctiger, dorsal view; H Phallus, lateral view. Scale bars: A, B = 1.0 mm; C, D = 0.2 mm; E = 0.5 mm; F-H = 0.1 mm.