Sueus niisimai ( Eggers, 1926 )

Cognato, Anthony I., Smith, Sarah M., Schiffer, Matthew & Li, You, 2024, A taxonomic review of Sueus Murayama, 1951 ambrosia beetles (Coleoptera: Curculionidae: Scolytinae: Hyorrhynchini) aided by molecular phylogenetic analyses, Zootaxa 5477 (4), pp. 475-493 : 487-488

Sueus niisimai ( Eggers, 1926)

Fig. 7

Hyorrhynchus niisimai Eggers, 1926: 133 .

Neohyorrhynchus niisimai (Eggers) : Schedl 1962: 202.

Sueus niisimai (Eggers) : Wood 1983: 650.

Sphaerotrypes controversae Murayama 1950: 62 . Synonymy: Wood 1992: 85.

Sueus sphaerotrypoides Murayama 1951: 2 . Synonymy: Wood 1983: 650.

Type material. Hyorrhynchus niisimai holotype, female, Japan, Urakawa (Hakodate), USNMENT01547084 (examined). Sphaerotrypes controversae lectotype, female, Japan, Kochi Pref., Daidominamiyama, Shikikiu (examined). Sueus sphaerotrypoides holotype, female, Japan, Wakayama Pref., Nishimuro County, Ohshima Vill, Sue ( NMNH) (examined) .

Other specimens examined. Vietnam: Ninh Binh Prov., Cuc Phuong NP, 20.34932, 105.59669, 431m, 7.iii.2018 , VN 134, SM Smith, AI Cognato, ex standing dead laurel; base of bole, 5 cm ( MSUC _ARC_320284). Additional records in Table 1 .

Diagnosis. Length 1.7–2.0 mm, 2.11–2.25 × longer than wide; declivital interstriae bearing minute granules; first fifth of elytral base granulate; main elytral interstrial setae longer than ground vestiture (> width of interstria); ground vestiture shorter than width of an interstria.

Distribution. Found throughout eastern Asia including China (Fujian, Guangxi, Guizhou, Jiangxi, Zhejiang), Japan (Kochi, Okinawa, Wakayama), South Korea (Jeju), Taiwan (Nantou), and northern Vietnam * (Cao Bang, Ninh Binh, Thua Thien Hue). It may have a more northerly distribution than S. pilosus . There are records from Australia, Fiji (introduced), Malaysia, Sri Lanka, and Papua New Guinea ( Beaver 1984; Beaver & Gebhardt 2005; Li et al. 2020) which need verification given potential misidentification with the more southerly distributed S. pilosus .

Host. Cornus controversa ( Cornaceae ) ( Murayama 1950), Machilus ( Lauraceae ), Ligustrum ( Oleaceae ). Mycetophagous and presumably polyphagous.

Figures

FIGURE 7. Sueus niisimai female (MSUC_ARC_320284) 1.7 mm A) dorsal view; B) lateral view; C) frons; D) posterolateral view.