Nossidium koreanum, Jang & Sörensson & Park, 2023

Jang, Taeyoung, Sörensson, Mikael & Park, Jong-Seok, 2023, Three new species of the subfamily Nossidiinae (Coleoptera: Ptiliidae) from South Korea, Zootaxa 5319 (4), pp. 537-547 : 539-542

publication ID	https://doi.org/ 10.11646/zootaxa.5319.4.4
publication LSID	lsid:zoobank.org:pub:74203781-C079-4CB4-8C83-765567A858E8
DOI	https://doi.org/10.5281/zenodo.8203324
persistent identifier	https://treatment.plazi.org/id/4BA0A872-A993-4201-8043-692828A3E48D
taxon LSID	lsid:zoobank.org:act:4BA0A872-A993-4201-8043-692828A3E48D
treatment provided by	Plazi
scientific name	Nossidium koreanum
status	sp. nov.

Treatment

Nossidium koreanum sp. nov.

( Figs 1A–B View FIGURE 1 , 2 View FIGURE 2 , 5 View FIGURE 5 : circle)

Diagnosis. The adult of Nossidium koreanum is very similar to the western Palaearctic Nossidium pilosellum ( Marsham, 1802) . It can be distinguished by the shape of the aedeagus (round apical tip, shorter paramere with less number of setae) and stout, globular spermatheca. It is also similar to the European Nossidium flachi Ganglbauer, 1898 but differs by being on average slightly smaller and with stouter, less elongate body form, and by its broader intermesocoxal process and more evenly curved metaventral lines ( Fig. 2G View FIGURE 2 ). In addition, we compared N. koreanum to several Nearctic Nossidiine taxa, described as well as undescribed, without finding any correspondance.

Description. Body length 0.95–1.05 mm, width 0.52–0.56 mm; oval, convex; color brown, evenly punctuate with pale yellow pubescence. Antennomeres I–II light brown, III–XI dusky yellow ( Figs. 1A–B View FIGURE 1 ).

Head. Broad, rounded; weakly and sparsely punctuate. Eyes large; distance between eyes in ventral view 0.22 mm. Antennal length 0.46 mm; antennomeres I–II large, stouter than others; III short, cone-shaped; IV–VIII long, distally weakly dilated; IX–XI clavate, basal half of seta darker; IX ovoid; X basally dilated by three fourths; XI ovoid ( Fig. 2A View FIGURE 2 ).

Thorax. Pronotum length 0.31 mm, width 0.55 mm; widest slightly in front of base; lateral margin smooth, not serrate; surface shining, rather weakly, evenly punctuate with pubescence; posterior margin sinuate ( Fig. 2B View FIGURE 2 ). Scutellum small, triangular ( Fig. 2C View FIGURE 2 ).

Wings. Elytral length 0.69 mm, long, complete; evenly punctuate with pubescence; lateral and posterior margin rounded ( Fig. 2E View FIGURE 2 ). Hindwing blade wide, membranous; anterior petiolar margin setose on distal two thirds ( Fig. 2D View FIGURE 2 ).

Meso-, Metaventrite. Mesoventrite anteriorally with collar and keel; medial collar extension and keel weakly developed; laterally of mesocoxae, mesopleural [anterior] suture rather straight, directed obliquely anterad, metaventral [posterior] line rather straight, distally gently curved posterad; mesoventrite medially as long as metaventrite ( Fig. 2G View FIGURE 2 ).

Abdomen. Abdominal sternite I anteromedially with prominent knob fitting to metaventral [intermetacoxal] condyle ( Figs. 2G, J–K View FIGURE 2 ). Male abdominal sternite VI rounded, female somewhat angled ( Figs. 2J–K View FIGURE 2 ). Male tergite X smoothly triangular, female posterior margin sexdentate ( Figs. 2H–I View FIGURE 2 ).

Legs. Procoxae contiguous. Mesocoxae separated by broad process. Metacoxae short, wide, almost contiguous, only separated by an intermetacoxal condyle ( Figs. 2B, G View FIGURE 2 ).

Male genitalia. Aedeagus elongate, somewhat flattened, slightly asymmetric, basal foramen skewed, apex obtusely rounded; parameres each with two setae, apical one longer ( Fig. 2L View FIGURE 2 ).

Female genitalia. Spermatheca small, globular, mushroom-shaped part short and stout ( Fig. 2M View FIGURE 2 ).

Material examined (n=20, 9♁♁ 11♀♀).

Holotype (deposited in NIBR), ♁ (dry), Korea: Gyeongbuk Prov. Seonghyeon-ri, Yongmun-myeon, Yecheon-gun , 04.V.2019, 36°40′48.0″N 128°25′09.0″E, 134 m, sifting leaf & soil litter, U.-J. Byeon. GoogleMaps

Paratypes (deposited in CBNUIC), 1 ♁ 1♀ (1♁, slide; 1♀, dry), same data as in holotype; 2♁♁ (dry), Korea: Chungbuk Prov. 1061-29, Chopyeong-ro, Chopyeong-myeon, Jincheon-gun , 31.III.2021, 36°48'47.2"N 127°31'13.7"E, 92 m, sifting leaf& soil& deadwood debris, J.-I. Shin, J.-W. Kang; 1 GoogleMaps ♁ 5♀♀ (4♀♀, dry; 1♁ 1♀, slide), Korea: Chungbuk Prov. 182, Dangdongjanghyeon-ro, Daegang-myeon, Danyang-gun , 19.III.2021, 36°55'39.0"N 128°22'30.0"E, 360 m, sifting leaf & soil litter, T GoogleMaps .- Y. Jang, Y.-J. Choi, M.-H. Song; 1♁ (dry), Korea: Chungbuk Prov. Jagwangsa, Mt. Worak , 1560-35, Mireuksonggye-ro, Hansu-myeon, Jecheon-si, 28. V .2020, 36°52′52.0″N 128°05′05.0″E, 275 m, sifting leaf & soil litter, M.-H. Song, U.-J. Byeon; 1♀ (dry), same locality, 09. VI .2021, 36°52'52.0"N 128°05'10.0"E, 276m, sifting leaf& soil &deadwood debris, J.-I. Shin,M.-H.Song; 1♀ (card mounted), same locality, 15.VII–29.VIII.2022, 36°52'53.3"N 128°05'13.8"E, 292 m, F.I. T GoogleMaps ., J.-I. Shin, U.-J. Hwang; 1♁ 1♀ (in 95% EtOH), Korea: Gangwon Prov. 535, Woran-gil, Anheung-myeon, Hoengseong-gun , 29.IV.2022, 37°23'01.7"N 128°09'44.3"E, 608 m, sifting leaf & soil litter, J.-I. Shin, M.-H. Song; 1 GoogleMaps ♁ 1♀ (dry), Korea: Gyeongbuk Prov. 164, Winneungnae-gil, Yongmun-myeon, Yecheon-gun , 20.IX.2021, 36°42'43.5"N 128°25'27.9"E, 355 m, sifting leaf & soil litter, U.-J. Byeon; 1♁ (dry) GoogleMaps , Korea: Gyeongbuk Prov. Cheongnyeo-ro, Unmun-myeon, Cheongdo-gun , 02.VII.2021, 35º45'18.9''N 128º56'41.5''E, 251 m, sifting leaf & soil litter, M.-H. Song, U.-J. Byeon, J.-I. Shin GoogleMaps ; 1♀ (dry), Korea: Jeonbuk Prov. Yeobang-ri, Seongsan-myeon, Gunsan-si , 03.VIII.2021, 36°00′38.1″N 126°47′00.9″E, 175 m, sifting leaf & soil litter, J.-W. Kang, J.-W. Kim GoogleMaps .

Distribution. South Korea ( Fig 5 View FIGURE 5 : circle).

Etymology. This species was named after the type locality: Korea.

NIBR	National Institute of Biological Resources
T	Tavera, Department of Geology and Geophysics
V	Royal British Columbia Museum - Herbarium
VI	Mykotektet, National Veterinary Institute