30,487 research outputs found
Oral History of Thao Nguyen
No full textAn oral history with Ms. Thao Nguyen, born in 1957 in Ca Mau, Vietnam. She attempted to leave Vietnam 7 times and succeeded on her 8th try. She arrived in a refugee camp in Malaysia where she was denied resettlement and sent back to Vietnam in 1996. After waiting a few more years, she was sponsored to come to the United States in 2000 by a Christian church in Long Beach. She became a manicurist and currently lives in Santa Ana, California.Recorded Digitall
Oral History of Dang Nguyen
No full textThis is an oral history of Mr. Dang Nguyen. He was born in Da Nang, Vietnam in 1964. After the Fall of Saigon and the communist takeover in 1975, his father was imprisoned in a reeducation camp. In 1981, when he had just finished high school in Vietnam, he and his younger sister made their escape by boat. After three days at sea, he was processed at the Pulau Bidong refugee camp in Malaysia, where they stayed for seven months. His aunt and uncle in Akron, Ohio were able to sponsor him. After a year living in Ohio, he moved to Santa Ana, California where he pursued an Electronic Technician certificate at Santa Ana College. Through his work in an assembly line at a factory, he was able to sponsor his father and brother to California. His mother arrived via the Orderly Departure Program. He later moved on to the California State University of Long Beach to receive a Bachelors of Science in Engineering. Since then, he has worked in the computer-engineering field and is now a manager. He got married in 1993 and has three children. As of this interview, Mr. Dang Nguyen and his family live in Tustin, California.Recorded digitall
Polypheretima mekongmontis Nguyen, Tran & Nguyen 2014
No full textPolypheretima mekongmontis Nguyen, Tran & Nguyen, 2014 (Figure 14) Polypheretima mekongmontis Nguyen, Tran & Nguyen, 2014: 118, fig. 6. *: Information obtained from Omodeo (1957) Material examined 45 matures (CTU-EW 028.04) Hon Tre Island (09°58 ʹ 33 ʹʹ N, 104°51 ʹ 19.3 ʹʹ E), Kien Hai Distrist, Kien Giang Province, 14 November 2013, coll. Kim-Binh T. Trinh. Diagnosis Body cylindrical, medium size, length 82–91 mm, diameter 3.2–3.7 mm, 103–150 segments. Prostomium prolobous. First dorsal pore in 12/13. Setal number 31–39 in viii, 42–53 in xxx, 5–7 between male porophores in xviii; setal distance aa> ab, zz> zy. Spermathecal pores multiple, in ventrolateral intersegments 4/5/6/7. Male pores located inside copulatory pouches in xviii. No genital markings in the spermathecal region, but two pairs in xvii and xix. Testis sacs separated. Holandric. Intestinal caeca absent. Septa 8/9/10 absent. Habitats The species was found in soils in which long-term trees are planted. Remarks The species was recently described from Hon Dat Mountain in the mainland of Kien Giang Province. It is recorded in Hon Tre Island for first time.Published as part of Nguyen, Tung T., Trinh, Kim-Binh T., Nguyen, Hong-Lan T. & Nguyen, Anh D., 2017, Earthworms (Annelida: Oligochaeta) from islands of Kien Hai District, Kien Giang Province, Vietnam, with descriptions of two new species and one subspecies, pp. 883-915 in Journal of Natural History 51 (15 - 16) on pages 902-904, DOI: 10.1080/00222933.2017.1294213, http://zenodo.org/record/518088
Eumenes congnatus Nguyen, sp. nov.
No full textEumenes congnatus Nguyen, sp. nov. (Figs 7–12) Material examined. Holotype, ♀, “ VIETNAM, Tuyen Quang, Bac Vang Ranger Station, Na Hang Natural Reserve, Na Hang, 22 ° 20 ' 52.6 "N 105 ° 25 ' 49 "E, 10.VI. 2015, LTP Nguyen, DD nguyen & LX Truong [IEBR]. Paratypes: VIETNAM: Ha Giang: 1 ♂, Tung Ba, Vi Xuyen, 3.vii. 2013, TV Nguyen; Bac Kan: 1 ♀, Lang San, Na Ri, 21 0 15 ’N, 106 0 06’E, 270 m, 3-4.viii. 2012, J Kojima, H Nugroho & IED-c; Thai Nguyen: 1 ♂, Xom O, Yen Lac, Phu Luong, 2.vi. 2014, LTP Nguyen; Son La: Lang Son: 1 ♀, Cai Kinh, xi. 2015, LTP Nguyen, DD Nguyen & NT Tran; Son La: 1 ♀, Nam Pam, Muong La, 660 m, 25.vii. 2009, LTP Nguyen, PH Pham & J Kojima; Vinh Phuc: 1 ♂, Tam Dao NP, 21 0 26 ’N, 105 0 37 ’E, 400 m, 20.viii. 2005, J Kojima; Ha Noi: 1 ♂, Suoi Mo, Yen Bai, Ba Vi, 01.vi. 2001, LTP Nguyen Hai Duong: 1 ♀, Hoang Hoa Tham, Chi Linh, 19.viii. 2012, O.T. Nguyen [IEBR]; Lang Son: 3 ♂, Cai Kinh, Huu Lung, 22 ° 39 ' 42.9 "N, 106 ° 15 ' 36 "E, 28 m, 24.xi. 2015, LTP Nguyen, DD Nguyen, NT Tran; Thanh Hoa: 1 ♂, Xuan Lien NR, Hon Can, Van Xuan, Thuong Xuan, 19052 ’ 27.5 ”N, 105014 ’ 20.8 ”E, 106 m, LTP Nguyen; Nguyen; Nghe An: 1 ♀, Pu Mat NP, 26.vii. 2004, LTP Nguyen [VNMN]. Description. Female. Body length 11–12 mm (holotype 11.5 mm); fore wing length 10–11 mm (holotype 10.5 mm). Structure as in Eumenes longus sp. nov., but differs as follows. Head in frontal view slightly wider than high (Fig. 7). Distance between inner eye margins (frontal view) at vertex twice more than at clypeus. Clypeus nearly 1.8 × as highas wide (Fig. 7). Metasomal segment 1 in dorsal view gradually widened from base to apex (Fig. 9), tergum and sternum fused, suture between them distinct almost throughout basal part. T 2 in lateral view as long as wide (Fig. 8). Body with slightly less coarse punctures than in E. longus. Color. Black, with following parts yellow: narrow band along inner eye margin extending from bottom to near ocular sinus, spot between antennal sockets, short line at vertex behind eye, short line at basal margin of dorsal pronotum, apical part of parategula and apical margin of T 1. Legs black. Propodeal valvulae dark brown. Wings dark brown, strongly infuscate, veins dark brown. Male. Body length 10–11 mm; fore wing length 9–10 mm. Structure as in female and male of E. longus but clypeus proportionally longer, in frontal view 2.3 × as long as wide, with sharper teeth (Fig. 10). F 11 propotionaly shorter than in E. longus (Fig. 11). Color as in female. Distribution. Northern Vietnam: Tuyen Quang, Ha Giang, Bac Kan, Thai Nguyen, Son La, Vinh Phuc, Ha Noi, Thanh Hoa, Nghe An. Etymology. The specific name refers to the similarity with its congener E. longus. Remarks. This species is similar to E. longus, but can be easily distinguished from the latter by having T 1 gradually widened from base to apex (gradually widened basally and then parallel in E. longus), T 2 in lateral view as long as wide (1.1 × as long as wide in E. longus), and male clypeus with sharper teeth. This species can be distinguished from two Papuan species by having clypeus nearly 1.8 × as high as wide (less than 1.3 × as high as wide in two Papuan species).Published as part of Nguyen, Lien Thi Phuong, 2016, Two new species of the genus Eumenes Latreille, 1802 (Hymenoptera: Vespidae, Eumeninae) from Vietnam, pp. 583-588 in Zootaxa 4093 (4) on pages 585-587, DOI: 10.11646/zootaxa.4093.4.11, http://zenodo.org/record/27097
Okinawepipona yty , Nguyen 2018
No full text<i>Okinawepipona yty</i> Nguyen, 2018 <p>Figs. 1–7</p> <p> <i>Okinawepipona yty</i> Nguyen, 2018: 592, 596 (key), female – “Y Ty, Bat Xat, Lao Cai ” (IEBR).</p> <p> The male specimens we examined are from the type locality and agree well with the description by Nguyen <i>et al</i>. (2018). As described below, the male is similar to the female both in structure and coloration except for some few characters.</p> <p> <b>Material examined.</b> VIETNAM: <b>Lao Cai:</b> 12 ♀, 16 ♁, Y Ty, Bat Xat, 22°36′29.5″N 103°37′29.6″E, alt. 1869 m, 6 May 2019, Nguyen Quang Cuong leg.; 3 ♁, Y Ty, Bat Xat, 22°37′14.5″N 103°37′25.5″E, alt. 1850 m, 15 July 2023, Nguyen Thi Phuong Lien, Nguyen Quang Cuong leg. [IEBR]</p> <p> <b>Description.</b> <i>Male</i> (Fig. 4) [female characters in square brackets]. Body length 11–12 mm; forewing length 11–12 mm. Head in frontal view subcircular, wider than high, about 1.2× as wide as high [1.1× as wide as high] (Fig. 1). Vertex without cephalic foveae [with cephalic foveae small, bearing dense pubescence, situated very close to each other, almost touching each other] (Fig. 2). Distance from posterior ocellus to apical margin of vertex nearly 1.6× distance from posterior ocellus to inner compound eye margin [more than 1.7× distance from posterior ocellus to inner compound eye margin] (Fig. 2). Gena slightly narrower than compound eye, in lateral view about 0.9× as wide as compound eye [much narrower than compound eye, in lateral view about 0.7× as wide as compound eye]. Occipital carina complete, present along entire length of gena, but dorsally somewhat weak. Inner compound eye margins strongly converging ventrally; in frontal view about 1.8× further apart from each other at vertex than at clypeus [1.3× further apart from each other at vertex than at clypeus]. Disc of clypeus in lateral view weakly convex at basal half, then straight to near apical margin; in frontal view 1.3× higher than wide [about as wide as high] (Fig. 1), with basal margin almost straight [slightly convex medially] and distinctly separated from antennal sockets; apical margin deeply emarginate medially, forming very sharp tooth on each lateral side [forming sharp tooth on each lateral side] (Fig. 1), without carina [with two faint carinae running from tooth at apical point to base direction]; width of emargination slightly greater than 1/3 width of clypeus between inner compound eye margins [width of emargination slightly less than 1/3 width of clypeus between inner compound eye margins]. Mandible with prominent teeth, second and third teeth with inner side almost straight [second and third teeth with inner side produced with round margin], fourth tooth pointed apically. Antennal scape about 3.3× as long as its maximum width [about 3.7× as long as its maximum width]; flagellomere I about 1.8× as long as wide [about 1.5× as long as wide], flagellomeres II and III slightly longer than wide [flagellomere III as wide as long], flagellomere IV as wide as long, flagellomeres V–IX wider than long, terminal flagellomere small, slightly curved, 3.5× as long as its basal width, reaching to near base of flagellomere IX when folded [terminal flagellomere bullet-shaped, as long as its basal width] (Fig. 3).</p> <p>Mesosoma, metasoma (except tergum VII and sternum VII), and body sculpture as same as in female except clypeus with dense, small, deep punctures [clypeus with dense, large, flat-bottomed punctures, each bearing silver bristle, punctures at center larger than at sides, space between punctures larger than puncture diameter]. Tergum VII and sternum VII with some small and sparse punctures come between minute punctures.</p> <p> <i>Color</i>. Black; similar to female except clypeus almost entirely yellow [large spots on upper lateral corner and a large spot on lower middle of clypeus]; head black [narrow band along inner compound eye margin extending from bottom of frons nearly to ocular sinus, large spot between antennal sockets].</p> <p> <i>Genitalia</i>. As in Figs. 5–7. Parameral spine lacking setae. Volsella flattened, spatulate, wide on inner aspect, and without setae at top (Fig. 5). Digitus knife-shaped, almost parallel at one-third from base, then gradually narrowing to top, with medium long setae on outer margin (Fig. 5). Penis valves of aedeagus long, about 1.6× as long as basal apodeme, in ventral view proximal part produced laterally into a round lobe laterally with blunt apex in inner margin apically (Fig. 6); in profile apical part produced into a round projection (Fig. 7); dorsal rod of aedeagus shorter than basal apodeme apically (Fig. 7).</p> <p> <b>Distribution.</b> Vietnam (Lao Cai).</p>Published as part of <i>Nguyen, Hieu Van, Nguyen, Manh Thanh & Nguyen, Lien Thi Phuong, 2024, Discovery of the male of Okinawepipona yty Nguyen, 2018 (Hymenoptera: Vespidae: Eumeninae) from Vietnam, pp. 79-84 in Zootaxa 5399 (1)</i> on page 80, DOI: 10.11646/zootaxa.5399.1.6, <a href="http://zenodo.org/record/10494478">http://zenodo.org/record/10494478</a>
Okinawepipona Nguyen & Nguyen & Bozdoğan 2018
No full textKey to all known species of the genus <i>Okinawepipona</i> <p>The characters used are applicable to both sexes unless the sex is specified.</p> <p> 1. Body covered with very coarse punctures; mesoscutum, scutellum and metanotum strongly convex dorsally; propodeum with dorsal part strongly rugose and convex, dorsal and posterior surfaces separated by sharp edge; metasomal tergum I in dorsal view about twice as wide as long.......................................... <i>O. curcipunctura</i> Nguyen & Xu (2014).</p> <p>- Body covered with less coarse punctures; mesoscutum, scutellum and metanotum slightly convex; dorsal surface of propodeum not convex, dorsal and posterior surfaces separated by blunt edge; tergum I in dorsal view slightly less than twice as wide as long.......................................................................................... 2</p> <p> 2. Propodeum rugose; tergum I in lateral view strongly convex anteriorly................................ <i>O. yty</i>, <b>sp. nov</b>.</p> <p>- Propodeum smooth or with striae; tergum I in lateral view slightly convex anteriorly................................ 3</p> <p> 3. Clypeus in lateral view weakly convex and then straight dorsally, apical margin shallowly emarginated medially, apical teeth blunt; posterior surface of propodeum shiny, almost smooth in lateral area and with weak and short oblique striae along median carina; scutellum and metanotum black; metasomal terga IV-VI entirely black............ <i>O. nigra</i> Nguyen & Xu (2014).</p> <p> - Clypeus in lateral view moderately convex, apical margin deeply emarginated medially, apical teeth sharp; posterior surface of propodeum with striae; scutellum and metanotum largely yellow to orange-yellow; metasomal terga IV-VI black, each with yellow to orange-yellow apical band........................................... <i>O. kogimai</i> (Giordani Soika, 1986)</p>Published as part of <i>Nguyen, Lien Thi Phuong, Nguyen, Ha Thi Thu & Bozdoğan, Hakan, 2018, Contribution to the genus Okinawepipona Yamane (Hymenoptera: Vespidae: Eumeninae) from Vietnam, with description of a new species, pp. 592-596 in Zootaxa 4462 (4)</i> on pages 595-596, DOI: 10.11646/zootaxa.4462.4.10, <a href="http://zenodo.org/record/1441797">http://zenodo.org/record/1441797</a>
Okinawepipona Nguyen & Nguyen & Bozdoğan 2018
No full textKey to all known species of the genus <i>Okinawepipona</i> <p>The characters used are applicable to both sexes unless the sex is specified.</p> <p> 1. Body covered with very coarse punctures; mesoscutum, scutellum and metanotum strongly convex dorsally; propodeum with dorsal part strongly rugose and convex, dorsal and posterior surfaces separated by sharp edge; metasomal tergum I in dorsal view about twice as wide as long.......................................... <i>O. curcipunctura</i> Nguyen & Xu (2014).</p> <p>- Body covered with less coarse punctures; mesoscutum, scutellum and metanotum slightly convex; dorsal surface of propodeum not convex, dorsal and posterior surfaces separated by blunt edge; tergum I in dorsal view slightly less than twice as wide as long.......................................................................................... 2</p> <p> 2. Propodeum rugose; tergum I in lateral view strongly convex anteriorly................................ <i>O. yty</i>, <b>sp. nov</b>.</p> <p>- Propodeum smooth or with striae; tergum I in lateral view slightly convex anteriorly................................ 3</p> <p> 3. Clypeus in lateral view weakly convex and then straight dorsally, apical margin shallowly emarginated medially, apical teeth blunt; posterior surface of propodeum shiny, almost smooth in lateral area and with weak and short oblique striae along median carina; scutellum and metanotum black; metasomal terga IV-VI entirely black............ <i>O. nigra</i> Nguyen & Xu (2014).</p> <p> - Clypeus in lateral view moderately convex, apical margin deeply emarginated medially, apical teeth sharp; posterior surface of propodeum with striae; scutellum and metanotum largely yellow to orange-yellow; metasomal terga IV-VI black, each with yellow to orange-yellow apical band........................................... <i>O. kogimai</i> (Giordani Soika, 1986)</p>Published as part of <i>Nguyen, Lien Thi Phuong, Nguyen, Ha Thi Thu & Bozdoğan, Hakan, 2018, Contribution to the genus Okinawepipona Yamane (Hymenoptera: Vespidae: Eumeninae) from Vietnam, with description of a new species, pp. 592-596 in Zootaxa 4462 (4)</i> on pages 595-596, DOI: 10.11646/zootaxa.4462.4.10, <a href="http://zenodo.org/record/1441797">http://zenodo.org/record/1441797</a>
Metaphire planatoides Nguyen & Nguyen & Lam & Nguyen 2020, new species
No full textMetaphire planatoides, new species (Figs. 1, 4) Material examined. Holotype: 1 mature (CTU-EW.171. h01), natural forests (10°24′21.7″N, 107°16′18.2″E), Long Hai town, Long Dien District, Ba Ria-Vung Tau Province, 33 m asl, 25 October 2016, coll. Nguyen Phuc Hau. Paratypes: 2 matures (CTU-EW.171.p02), same data as holotype. Diagnosis. Small-sized worm, length 64–67 mm, average diameter 2.4–2.8 mm. Body colourless, pale, except light brown clitellum. Prostomium epilobous. First dorsal pore in 11/12. Two pairs of spermathecal pores in ventral intersegments 6/7/8. Male pores located deeply inside copulatory pouches in the setal ring xviii. Genital markings totally absent. Holandric. Intestinal caeca simple. Septa 8/9/10 absent. Description. Body cylindrical, small size, length 64–67 mm, average diameter 2.4–2.8 mm, weight 0.18–0.32 g, segments 89–96. Body colourless, pale except light brown clitellum. Prostomium 1/2 epilobous. First dorsal pore in 11/12. Preclitellar setae stouter and sparser than post-clitellar ones; setal number 39–41 in viii, 51–55 in xxx, 7–9 between two openings of copulatory pouches in xviii; setal distance aa=ab, zz=zy. Clitellum close, xiv–xvi, with only ventral setae, without dorsal pores. Female pore single, in midventral xiv. Two pairs of spermathecal pores in ventral intersegments 6/7/8. No genital markings in spermathecal region. Male pores located deeply inside copulatory pouches in the setal ring xviii. Ventral distance between two openings of copulatory pouches ca. 0.35× body circumference. No genital markings in male region. Septa 5/6/7/8 thick, 8/9/10 absent, 10/11/12/13 thin. Oesophageal gizzard within viii–ix. Intestinal origin at xv; caeca simple, paired in xxvii–xxv. Last hearts in xiii. Pharyngeal micronephridia developed in 5/6/7. Typhlosole simple, lamelliform. Lymph glands absent. Two pairs of spermathecae in vii and viii. Ampulla mangoshaped; duct small, about ⅓ ampulla length. Diverticula long, but waved and folded, directly attached to the base of ampulla duct; seminal chamber tiny, oval-shaped. Spermathecal ducts without nephridia. Accessory glands absent. Holandric. Testis sacs developed in x–xi, connected. Seminal vesicles developed in xi–xii. Ovaries developed in 12/13. Ovisacs invisible. Prostate glands deeply lobuled, paired in xvii–xx; ducts short, C-shaped. No accessory glands. Etymology. The epithet " planatoides " is used to emphasise its similarity to Metaphire planata (Gates, 1926). Remarks. Metaphire planatoides, new species, is assigned to the Metaphire planata group characterised by having two pairs of spermathecal pores in 6/7/8 and simple intestinal caeca (Sims & Easton, 1972). The planata group currently consists of at least six species, M. planata (Gates, 1926), M. decipiens (Beddard, 1912), M. dunckeri (Michaelsen, 1902), M. ferdinandi (Michaelsen, 1891), M. parvula (Ohfuchi, 1956), and M. sintangi (Michaelsen, 1922). The new species differs from these species except M. planata in the absence of genital markings in both spermathecal and male regions. Metaphire planatoides, new species, is somewhat similar to M. planata, in having the first dorsal pore in 11/12, the absence of genital markings in both spermathecal and male regions, and the shape of the openings of copulatory pouches. However, it is distinguished by the absence of accessory glands in the spermathecal region, spermathecae with thin ducts, strongly waved diverticula, connected seminal vesicles, and its smaller size (length = 67 mm, diameter = 2.4–2.8 mm). On the contrary, M. planata has several accessory glands with long ducts, spermathecae with stout ducts, diverticulum straightly cylindrical, somewhat slightly expanded distally, separated seminal vesicles, and a larger size (length = 125 mm, diameter = 4.8 mm).Published as part of Nguyen, Tung T., Nguyen, Nam Q., Lam, Dang H. & Nguyen, Anh D., 2020, Six new species of the genus Metaphire Sims & Easton, 1972 (Annelida: Oligochaeta: Megascolecidae) from southeastern Vietnam, pp. 220-236 in Raffles Bulletin of Zoology 68 on page 228, DOI: 10.26107/RBZ-2020-0019, http://zenodo.org/record/457721
Beth Nguyen: 47th Annual ODU Literary Festival
No full textBeth Nguyen is the author of the recent memoir Owner of a Lonely Heart, which was a New York Times Editors’ Choice Pick, as well as the memoir Stealing Buddha’s Dinner, and two novels. She has received an American Book Award and a PEN/Jerard Award and her work has appeared in publications including The New Yorker, The Paris Review, Time, and Best American Essays. She teaches at the University of Wisconsin–Madison, where she also directs the MFA Program in Creative Writing
Polistes (Polistella) chuyangsin Nguyen & Nguyen & Bozdoğan 2018, sp. nov.
No full textPolistes (Polistella) chuyangsin Nguyen & Nguyen, sp. nov. (Figs 1–11) Material examined. HOLOTYPE, ♀, “ VIETNAM, Chu Yang Sin NP, Krong Kmar, Krong Bong, Dak Lak, 1080 m, 12°25'02.8''N, 108°11'30.8''E, Nest #VN-TN-2016-P- 04, 4.v. 2016, LTP Nguyen, QC Nguyen, [IEBR]. PARATYPES: VIETNAM: [IEBR] 1 ♂, 5 ♀, same data as holotype. Diagnosis. The new species can be distinguished from all other species of the subgenus Polistella by the following combination of characters: female gena in lateral view nearly as wide as eye; inner eye margins in frontal view nearly as far apart from each other at vertex as at clypeus; tomentum on clypeus restricted to its dorsal one fifth to one fourth with lateral part extending ventrally; propodeal orifice more than 2 × as long as wide (measured at widest part); sternum 2 in lateral view swollen ventrally in anterior half; male clypeus as wide as high; male genitalia with digitus in inner aspect of paramere 3.2× as long as wide, penis valves 0.7× longer than basal apodeme, in lateral view slightly thickened in proximal one fourth and with dorsal margin weakly and smoothly sinuate, with proximoventral corner produced into nearly right angle; ventral margin of penis valves finely serrated along entire the length. Description. Female. Body length 11.0– 11.5 mm (holotype 11.3 mm); fore wing length 12.0–13.0 mm (holotype 12.8 mm). Holotype. Head in frontal view 1.15× as wide as high (Fig. 1); in dorsal view weakly swollen laterally just behind eyes, then narrowed posteriorly. Vertex with slightly raised area inside ocelli, slightly sloping down behind posterior ocelli towards occipital carina; proportion of the distance between inner margins of posterior ocelli and the distance between outer margin of posterior ocellus and inner margin of eye at vertex about 1:2; distance between inner margins of posterior ocelli about 1.4× transverse diameter of posterior ocellus. Gena (Fig. 2) in lateral view nearly as wide as eye; occipital carina fine, evanescent in ventral third of gena. Inner eye margins in frontal view nearly as far apart from each other at vertex as at clypeus (Fig. 1). Antennal sockets slightly closer to inner eye margin than to each other; anterior tentorial pit as distant from antennal socket as from inner eye margin; interantennal space weakly raised. Clypeus in frontal view almost as wide as high (Fig. 1), produced ventrally into blunt angle; in lateral view convex from base to apical margin; lateral margin of clypeus lying along inner eye margin as long as diameter of antennal socket and length of malar space. Antennal scape 3× as long as its maximum width; flagellomere 1 2.5× as long as its maximum width, 1.2× as long as flagellomeres 2 and 3 combined; flagellomere 2 longer than wide, flagellomere 3 as long as wide; flagellomere 4–9 wider than long; terminal flagellomere bullet-shaped, 1.4× as long as its basal width (Fig. 3). Pronotal carina sharply raised, produced dorsally into thin lamella, slightly sinuate backward on lateral sides, reaching ventral corner of pronotum. Mesoscutum strongly convex, nearly as long as wide between tegulae; anterior margin broadly rounded. Scutellum convex, disc slightly concave at middle. Disc of metanotum weakly concave. Propodeum short; posterior face widely (nearly half of maximum propodeal width) and shallowly excavated medially, more or less smoothly passing into lateral faces; propodeal orifice elongate, 2.1× as long as wide (measured at widest part), somewhat narrowed in dorsal half. Fore wing slightly brown, transparent, vein dark brown. Metasomal tergum 1 short and thick, about 0.6× as long as its apical width, in lateral view abruptly swollen dorsally just behind propodeal orifice; corner between anterior and dorsal faces bluntly angled. Sternum 2 in lateral view strongly swollen ventrally in anterior half, then ventral margin bluntly angled into nearly straight line parallel to dorsal margin of the tergum (Fig. 4). Body with short, silver setae except front, posterior part of hear, posterior part of propodeum with long silver setae. Clypeus with scattered large punctures, each bearing a sharply pointed golden bristle, tomentum on clypeus restricted to its dorsal one fifth to one fourth with lateral part extending ventrally. Mandible with scattered large punctures. Frons with deep definite punctures. Vertex and gena with sparse and strong punctures; area around ocelli smooth; ventral one third of gena with scattered strong punctures. Pronotum with dense deep punctures; space between punctures very narrow, slightly raised to form reticulation. Mesoscutum with coarse dense flat-bottom punctures; punctures on scutellum and metanotum dense, smaller than those on mesoscutum. Mesepisternum with punctures similar to those on pronotum, densely with punctures in posterodorsal part and very scattered punctures in anteroventral part; border between them indistinct. Dorsal metapleuron with large smooth area, with some striae and sparse punctures. Propodeum with strong sharply-raised transverse striae. Metasomal segments densely covered with minute punctures in addition to sparse small punctures (ill-defined on terga; more or less well-defined on sternum). Color. Black, following parts dark brown: gena, mandible, antennal scape, flagellum 1 entirely, flagellomeres 2–9 beneath, large dorsal part of pronotum, tegulae, large part of scutellum, a small spot on lateral side of metanotum; a spot on upper part of mesepisternum; half of T1 and 2 at apical margin, T3–6 entirely, a narrow band at apical margin of S2–6; upper part of fore and middle femur, all tibiae entirely, tarsi 1–3 of all legs. The following parts yellow: clypeus except lateral margins, thick band from clypeus to ocular sinus, a thin line at anterior face of pronotum, along its carina, two spots on each side of propodeum, valvulae. Male. Body length mm 10.5 mm; fore wing length 10.7 mm. Structure as in female, but differing as follows: head 1.4× as wide as high in frontal view (Fig. 6); eye strongly swollen laterally; inner eye margins 1.3× as distant from each other at vertex as at clypeus; gena narrow, in lateral view 0.5 × as wide as eye; clypeus in frontal view nearly as wide as high (Fig. 5), slightly produced ventrally, evenly and very weakly rounded apically, in lateral view weakly convex dorsally. Antenna slenderer than in female (Fig. 6); scape short, 2.5× as long as its maximum width; flagellomere 1 as long as the length of flagellomeres 2 and 3 combined; flagellomeres 2–11each longer than wide; terminal flagellomere elongate, slightly curved, 2.7× as long as its basal width. Metasomal sternum 7 without tubercle. Body surface sculpture as in female, but clypeus with dense long golden setae. Color. Similar to female except clypeus and fore coxae underneath light brown. Male genitalia. Generally similar to that of P. affinis (Nguyen, 2017). Digitus in inner aspect of paramere (Fig. 8) 3.2× as long as wide (measured at widest part), distinctly swollen near base, gradually narrowed apically to mid-length, then slightly swollen towards the rounded apex. Aedeagus (Figs 9, 10), penis valves 0.7× longer than basal apodeme, in ventral view narrowest near mid-length, nearly straight from mid-length then strongly swollen and distinctly produced laterally near proximal margins, in lateral view slightly thickened in proximal one fourth and with dorsal margin weakly and smoothly sinuate, with proximoventral corner produced into nearly right angle (Fig. 10); ventral margin of penis valves finely serrated along entire length. Remarks. This species is very similar to P. affinis Gusenleitner, 2006, but differs in the following characters: male gena in lateral view 0.5× as wide as eye (0.3× as wide as eye in P. affinis); female flagellomere 4–6 wider than long (as wide as long in P. affinis); sternum 2 in lateral view swollen ventrally in anterior half (sternum 2 in lateral view swollen ventrally in anterior one-third in P. affinis). Etymology. The specific name refers to the type locality, Chu Yang Sin national park in Dak Lak province of Vietnam; it is to be treated as a noun in apposition. Distribution. Vietnam (High land provinces). Nest. A nest (Nest#VN-TN-2016-P-04) (Fig. 11) collected in Chu Yang Sin national park, Dak Lak province was examined. The nest had a comb comprised of several long cells, collected together with eight females. The nest was kept in a nylon bag in the car during travel, and two males emerged later when the nest was brought back to the laboratory (one male was broken when being taken out of the cell). The nest was found to be attached to a branch of Helicteres hirsute Lour. tree (Sterculiaceae) about 1.2 m above the ground. The nest characteristics are as follows: Petiole single, terminal, with thin central core of plant fibers, enlarged strictly with adult salivary secretion, dark brown and lustrous, 3.8 mm long, 0.8 x 1.3 mm thick; salivary coating extended onto substrate and largely onto back of comb. Comb tough, pliable in texture, light brown, subcircular (about 30 mm x 23 mm) in view from side of cell opening; ventral surface convex; dorsal surface concave. Nest cells generally arranged regularly and round at open end, but partly irregularly arranged (in some early short cells), where some cells are pentagonal; cell expanded towards open end, 2.7 mm (range 2.5–2.9 mm; n=5) wide at bottom and 5.6 mm (range 5.4–5.9 mm; n=6) wide at open end, 14.7 mm (range 14.0–16.2) mm; n=6) deep; cell wall about 0.2 mm thick. Cocoon caps yellow. Note on Polistes stigma subspecies: Two subspecies of Polistes stigma were recorded from Vietnam, namely Polistes stigma stigma (Fabricius) and Polistes stigma tamula (Fabricius) (Nguyen et al., 2017). For the latter, according to Castro & Dvorák, (2009), tamul- is an adjective, and as such must take the -us ending with a masculine genus like Polistes, so, the correct name, is Polistes stigma tamulus.Published as part of Nguyen, Lien T. P., Nguyen, Cuong Q. & Bozdoğan, Hakan, 2018, Species of the Polistes (Polistella) (Hymenoptera: Vespidae: Polistinae) from Vietnam, with description of a new species and a pictorial key, pp. 323-338 in Zootaxa 4402 (2) on pages 324-330, DOI: 10.11646/zootaxa.4402.2.5, http://zenodo.org/record/120895
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