185,315 research outputs found
Koreoneura eunyeopae Hossain et J. Kwon 2021, gen. et sp. nov.
No full textKoreoneura eunyeopae Hossain et J. Kwon, gen. et sp. nov. (Figs. 4–15; 16–19) Description. Biggest microleafhopper so far reported from East Asia; general body color brownish orange with black markings, darker in fresh specimens; head much narrower than pronotum, crown with 2 black submedial spots, short and broad, anterior and posterior margin more or less parallel. Pronotum broadened compared to head and scutellum, widened posteriorly, with anterior margin roundly produced, posterior margin a little concave. Frontoclypeus broadly bordered laterally with dark brown in color, anteclypeus and gena dark brown, lorum and rostrum yellowish brown. Forewing orange, apical portion hyaline; hindwing subhyaline. Second abdominal sternal apodeme in male with posterior lobes well developed, reaching to end of 4th sternite. Male genitalia. As described for genus. Length. Male 5.3–5.5mm, female 5.5–5.7mm. Type material. Holotype male, Korea, Jeonnam Province: Mt. Mudeungsan, on Cornus coreana, 26.VII.1981, Y.J. Kwon; paratypes, 13 males and 14 females, same data as holotype; 6 females, Korea, Gyeongbuk Province, Mt. Sambongsan, 14.VIII.1997; 5 males & 5 females, Korea, Gyeongbuk Province, Angang -eup, VII. 24. 2019; all same host and collector. Distribution. Korea (South). Etymology. The species is named in honor of Dr. Eun Yeop Huh, who first identified the species in Korea. Host plant. Cornus coreana. Remarks. This is the biggest (> 5.5mm) among the known typhlocybine leafhoppers from East Asia, so far.Published as part of Hossain, Md. Shamim, Kwon, Jin Hyung, Suh, Sang Jae & Kwon, Yong Jung, 2021, A remarkable microleafhopper genus Koreoneura gen. nov. and newly recorded genus of the tribe Dikraneurini from Korea (Homoptera: Cicadellidae: Typhlocybinae), pp. 353-360 in Zootaxa 4951 (2) on pages 356-357, DOI: 10.11646/zootaxa.4951.2.8, http://zenodo.org/record/466425
Koreoneura Hossain et J. Kwon 2021, gen. nov.
No full textGenus <i>Koreoneura</i> Hossain et J. Kwon, gen. nov. <p> <b>Type species.</b> <i>Koreoneura eunyeopae</i> Hossain et J. Kwon, <b>sp. nov.</b></p> <p> <b>Type locality.</b> Korea.</p> <p> <b>Description.</b> Body elongate, robust; head distinctly narrower than pronotum; crown medially wider than eyes, uniform to slightly produced at middle (Figs. 4–5). Eyes long, ovoid; ocelli absent, distinct vestiges present as paired pits on face well ventrad of crown margin, closer to eyes than to each other (Figs. 6–7). Pronotum broadened compared to head and scutellum, widened posteriorly, anterior margin of pronotum between eyes strongly produced, at hind margin excavated, on side rounded (Figs. 6–7). Face longer than broad, in profile rather convex, weekly depressed. Anteclypeus broad at base, projecting beyond margin of gena; frontal suture reaching ocellar pits; rostrum tapered (Figs. 6–7). Forewing more or less parallel sided, apical part rounded, without closed anteapical cells, R with two branches originating distad of mid-length, not divergent posteriorly, M with anterior branch straight (Fig. 9). Hindwing with submarginal vein complete but weakly developed along costal margin (Fig. 10). Front femur with dorsoapical pair of macrosetae; AM1 large, on ventral margin; intercalary row with 8–9 setae; tibia row AV with 8 macrosetae (Fig. 16). Middle femur without PD; tibia without preapical macrosetae. Hind femur macrosetae 2+1+1; tibial chaetotaxy AD: 18–19, PD: 11–12, AV: 4–5, PV: 32–36 smaller basal and 12–14 larger distal setae, with api- cal transverse row of 6–7spines; hind basitarsus as long as tarsomeres II and III combined, subtriangularly pointed apically, with dorsoapical pair of macrosetae and a row of 5 smaller ventral setae (Figs. 17–19).</p> <p> <b>Male genitalia.</b> Pygofer lobe triangular, appendages absent, with group of long setae at apex (Fig. 8). Subgenital plate with longitudinal row of strong macrosetae. Genital valve large, with median longitudinal ridge on inside. Style elongate and narrowed distally, without preapical lobe, with long sickle-shaped apex (Fig. 14). Connective poorly sclerotized, I-shaped (Fig. 15). Aedeagus with dorsal apodeme well developed; aedeagal shaft moderately long, compressed, shaft parallel-sided in lateral view, narrowed towards apex in posterior view, longer than preatrium, with small subapical process, apex with asymmetrical long process extended basolaterad; gonopore preapical on posterior surface (Figs. 12–13).</p>Published as part of <i>Hossain, Md. Shamim, Kwon, Jin Hyung, Suh, Sang Jae & Kwon, Yong Jung, 2021, A remarkable microleafhopper genus Koreoneura gen. nov. and newly recorded genus of the tribe Dikraneurini from Korea (Homoptera: Cicadellidae: Typhlocybinae), pp. 353-360 in Zootaxa 4951 (2)</i> on pages 354-356, DOI: 10.11646/zootaxa.4951.2.8, <a href="http://zenodo.org/record/4664257">http://zenodo.org/record/4664257</a>
On the Erdős-Pósa property for long holes in C_4-free graphs
No full textWe prove that there exists a function f(k)=O(k^2logk) such that for every C4-free graph G and every k∈N, G either contains k vertex-disjoint holes of length at least 6, or a set X of at most f(k) vertices such that G−X has no hole of length at least 6. This answers a question of Kim and Kwon [Erdős-Pósa property of chordless cycles and its applications. JCTB 2020
Maiestas peninsularis Dutta & Kwon & Suh & Kwon 2019, sp. nov.
No full textMaiestas peninsularis sp. nov. (Figs 11 A–J) Description. General coloration pale yellowish brown. Crown with oblique brown band on each side of median line at anterior margin, with six brown marks below these bands. Pronotum light yellowish, with dark brown patches. Scutellum light yellowish, with blackish basal triangles. Forewings pale brown, veins and cells light in tint with brownish edging. Head wider than pronotum. Crown longer medially than next to eyes, nearly 0.7 times as long as interocular width; anterior margin angularly rounded. Ocelli located on anterior margin of crown, close to eyes. Frontoclypeus broad, nearly as long as width between antennal pits. Anteclypeus slightly tapering apically. Lora distinctly narrower than anteclypeus at near base. Pronotum nearly 1.2 times as long as crown; lateral margin carinate; anterior margin roundly produced; posterior margin slightly concave. Scutellum nearly as long as pronotum, with transverse suture almost straight, not so prominent. Second sternal apodeme in male with posterior lobes well developed, reaching upto end of 3rd sternite. Male genitalia. Pygofer lobes nearly twice longer than high in lateral view, with numerous macrosetae on apical half; hind margin rounded. Subgenital plates rounded triangular; lateral margins with uniseriate row of macrosetae along with a few hair like setae. Styles slender; apophysis rather long, slightly curved laterally, gently tapered to bluntly pointed apex, bearing ventral tooth in middle portion. Connective longer than aedeagus. Aedeagal shaft slender, rather narrow, swollen subbasally, then tapered to acute upturned apex; gonopore indistinct. Body length. Male 3.2–3.3mm, female 3.5–3.6mm. Type material. Holotype male, Korea: Jejudo Province, Gwaneumsa, Hallasan, on Zoysia sp., 7.III.2016, Y.J. Kwon; Paratypes, 7 males, 9 females, same data as holotype; 1 male, Sangumburi, 7.III.2016; Chungbuk Province: 1 male, Geumsusan, 27.VIII.2013; Gyeongbuk Province: 1 male, Dansan-myeon, 13.VIII.1983; 1 male, Hyangeup, 8.X.1984; 1 male, KPNU campus, Daegu City, 21.IX.2004; Gyeonggi Province: 1 male, Camp Humphreys, 15.VII.2016; 1 male, same locality, 25.V.2016; 1 female, same locality, 23. VI.2016; Gangwon Province: 1 male, Daeamsan, 26.VII.1986; Jeonbuk Province: 1 male, Unjangsan, 28.VIII.1998, all same collector. Distribution. Korea (Cental, South, Jejudo). Host plant. Zoysia sp. Remarks. This new species resembles M. latifrons but can be differentiated from the latter by the more slender and preapically constricted apex of the aedeagal shaft, shorter posterior lobes of the 2nd sternal apodeme, and less strongly produced head.Published as part of Dutta, Nirmal Kumar, Kwon, Jin Hyung, Suh, Sang Jae & Kwon, Yong Jung, 2019, Review of the leafhopper genus Maiestas Distant (Hemiptera: Cicadellidae Deltocephalinae) from Korea, pp. 564-584 in Zootaxa 4646 (3) on pages 578-579, DOI: 10.11646/zootaxa.4646.3.7, http://zenodo.org/record/335112
Hyun Kwon
No full textToday I had the wonderful opportunity to discover more of the story of one of our faculty, Hyun Kwon, chair of the Department of Engineering & Computer Science. The conversation left me inspired, reminding me yet again of the amazing faculty who work at Andrews University.
Hyun was born as a second child among three siblings in South Korea. Her father was a police office, her mom a full-time mom. She was a high achiever academically and after attending an elite science track high school, she continued to the prestigious Korean Advanced Institute of Technology (KAIST) with a full governmental scholarship. She chose engineering to study because in that area math and science are applied to bring positive change to society.
It was while pursuing her PhD at KAIST that Hyun visited the U.S. and it so impressed her that she decided she wanted to come and live here at some point. It happened sooner than she expected; Hyun transferred and was soon on her way to complete her PhD at the University of Louisville.
Up to that time in her life Hyun had been focused on academic and professional success. She never had many Christian friends in her circle in Korea and still thinks that if she had stayed in Korea her ego would have become so big she would not have needed God! And so started her Exodus experience: Leaving her country, crossing the ocean and facing difficulties that come with that kind of transition.
Read the rest of Hyun’s story in Stories of Andrews at andrews.edu/stories. Hers is a story that is part of the spirit of Andrews.
Andrea Luxtonhttps://digitalcommons.andrews.edu/stories-2017-spring/1003/thumbnail.jp
Maiestas obongsanensis Kwon & Lee
No full textMaiestas obongsanensis (Kwon & Lee) (Fig. 10; Plate II: B; Plate V: I–J; Plate VI: I–J) New record. Recilia (Togacephalus) obongsanesis Kwon & Lee, 1979: 78, Fig. 6. Maiestas obongsanesis, Webb & Viraktamath, 2009: 16. Material examined. China, Liaoning Prov.: 1 ɗ, 1 Ψ, Mt. Yiwulvshan, 14 July 2006, coll. Yuan Zhonglin; Jiangxi Prov.: Pingxiang, Fanglou, 5 August 2002, 1ɗ, coll. Yuan Zhonglin, 1 Ψ, coll. Sun Qinxia (BMNH); Hunan Prov.: 1 ɗ, Chenzhou, 16 August 1985, coll. Zhang Yalin & Chai Yonghui; 1 Ψ, Chenzhou, 2 August 1985, coll. Zhang Yalin & Chai Yonghui; Zhejiang Prov.: 3 ɗɗ, 18 ΨΨ, Wuyanling, 650m, 28 July 2005, coll. Duan Yani, at light. All NWAFU, except where indicated. Distribution. Korean; China (Liaoning, Jiangxi, Hunan, Zhejiang).Published as part of Zhang, Yalin & Duan, Yani, 2011, Review of the Deltocephalus group of leafhoppers (Hemiptera: Cicadellidae: Deltocephalinae) in China, pp. 1-47 in Zootaxa 2870 on page 13, DOI: 10.5281/zenodo.20611
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
Hyukmin Harry Kwon, Violin
No full textScherzo from the Sonatensatz in C minor, Op. posth., FAE Sonata / J. Brahms; Chaconne in D minor, from Solo Violin Partita No. 2, BWV 1004 / J. S. Bach; Violin Concerto No. 2 in G minor, Op. 63 / S. Prokofie
Maiestas borealis Dutta & Kwon & Suh & Kwon 2019, sp. nov.
No full text<i>Maiestas borealis</i> sp. nov. <p>(Figs 1 A–J)</p> <p> <b>Description.</b> General coloration light brown. Crown with dark brownish patterns on anterior margin, on disc brown bands and spots on each side of mid line. Frontoclypeus with fuscous arcs. Pronotum with blackish patches. Scutellum with dark brown marks. Forewings with greyish veins; cells bordered with dark brown patches. Head slightly wider than pronotum. Crown longer medially than next to eyes, nearly 0.8 times as long as inter-ocular width; anterior margin angularly rounded. Ocelli close to eyes, on anterior margin of head, visible on dorsal side. Frontoclypeus broad, approximately as long as width between antennal pits. Anteclypeus slightly tapering apically. Lora distinctly narrower than anteclypeus near base. Pronotum slightly longer than crown; lateral margin carinate; anterior margin rounded; posterior margin slightly concave. Scutellum slightly shorter than pronotum, with transverse suture slightly curved and depressed. Forewing macropterous, with four apical and three anteapical cells; inner anteapical cell open basally; middle anteapical cell divided by crossvein. Second sternal apodeme in male with posterior lobes well developed, reaching nearly end of 3rd sternite.</p> <p> <b>Male genitalia.</b> Pygofer lobe in lateral aspect approximately 1.3 times longer than high, with numerous short to long macrosetae in apical half; hind margin somewhat truncate. Subgenital plate subtriangular; lateral margin evenly convex, with several macrosetae. Style slender; preapical lobe acute, well expressed, with fine setae; apophysis rather short, with ventral tooth subapically. Connective longer than aedeagus. Aedeagal shaft rather broad, blade like, gently narrowed apically in ventral view; apex slightly turned dorsad; gonopore indistinct.</p> <p> <b>Body length.</b> Male 3.2–3.3mm, female 3.7–3.8mm.</p> <p> <b>Type material.</b> Holotype male, Korea, Gangwon Province: Balgyosan, 23.IX.2016, Y.J. Kwon; Paratypes, 6 males, 4 females, same data as holotype; Chungbuk Province: 1 male, Cheondeungsan, 1.X.2016; Gyeongbuk Province: 1 male, KPNU campus, Daegu City, 16.IX.1981; 1 male, Daegu City, 13.IX.1983; Jejudo Province: 1 male, Donnaeko, 4.IX.1998; 1 male, Gwangryeong-Ri, on <i>Zoysia</i> sp., 19.II.2016; 2 males, 1 female, Hanlasan, 9.VIII.1984, all same collector.</p> <p> <b>Distribution.</b> Korea (Central, South, Jejudo).</p> <p> <b>Host plant.</b> <i>Zoysia</i> sp.</p> <p> <b>Etymology.</b> The name of the new species is derived from Latin word “borealis” referring its northerly distribution in Asia.</p> <p> <b>Remarks.</b> This species resembles <i>M. yangae</i> Zhang & Duan, 2011, but can be readily differentiated from the latter by the style apophysis in having gently tapered apex and armed with a ventral tooth on subapex. Although it is abruptly tapered to apex from mid length, with a ventral tooth on next middle portion in the latter species. This species is also simlilar to <i>M. horvathi</i> (Then, 1896), but it differs from the latter in having a somewhat broader aedeagal shaft, less acute aedeagal apex and shorter style apophysis.</p>Published as part of <i>Dutta, Nirmal Kumar, Kwon, Jin Hyung, Suh, Sang Jae & Kwon, Yong Jung, 2019, Review of the leafhopper genus Maiestas Distant (Hemiptera: Cicadellidae Deltocephalinae) from Korea, pp. 564-584 in Zootaxa 4646 (3)</i> on page 566, DOI: 10.11646/zootaxa.4646.3.7, <a href="http://zenodo.org/record/3351128">http://zenodo.org/record/3351128</a>
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