23,794 research outputs found
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
Pheretima vungtauensis Nguyen & Nguyen & Nguyen 2018, sp. nov.
No full textPheretima vungtauensis sp. nov. (Figure 1) Material examined. HOLOTYPE: mature Specimen (CTU-EW.166.h01) banana plantation (10o44’57.6 N; 107o14’35.1 E), 206 m aSl, Xa Bang commune, Chau Duc DiStrict, Ba Ria—Vung Tau Province, 25 October 2016, leg. Truong Thuy Ai. PARATYPES: 2 matureS (CTU-EW.166.p02) Same data aS for holotype; 1 mature (CTU- EW.166.p03) Anacardium occidentale plantation (10o39’42.7 N; 107o09’23.0 E), 107 m aSl, Lang Lon commune, Chau Duc DiStrict, Ba Ria—Vung Tau Province, 24 October 2016, leg. Truong Thuy Ai; 1 mature (CTU- EW.166.p04), banana plantation (10o38’25.3 N; 107o21’00 E), 62 m aSl, Son Binh commune, Chau Duc DiStrict, Ba Ria—Vung Tau Province, 25 October 2016, leg. Truong Thuy Ai; 1 mature (CTU-EW.166.p05), Anacardium occidentale plantation (10o38’38.0 N; 107o06’50.0 E), 62 m aSl, Hac Dich commune, Tan Thanh DiStrict, Ba Ria— Vung Tau Province, 24 October 2016, leg. Nguyen Phuc Hau; 2 matureS (CTU-EW.166.p06), near the road (10o29’09.2 N; 107o10’54.6 E), 75 m aSl, Hac Dich commune, Tan Thanh DiStrict, Ba Ria—Vung Tau Province, 24 October 2016, leg. Nguyen Phuc Hau; 1 mature (CTU-EW.166.p07), on the way to the Bao Quan Mountain (10o35’39.2 N; 107o07’24.0 E), 59 m aSl, Toc Tien commune, Tan Thanh DiStrict, Ba Ria—Vung Tau Province, 24 October 2016, leg. Nguyen Phuc Hau. Diagnosis. Medium Size, length 132–169 mm, diameter 4.1–6.1 mm, weight 1.64–3.39 gr (in formalin), and SegmentS 91–125. Three pairS of Spermathecal poreS in interSegmentS 6/7/8/9. Micronephridia Surrounding duct of ampulla. Copulatory poucheS preSent. Ventral diStance between male poreS about 0.35x body circumference. No genital markingS in both Spermathecal and male regionS. InteSt nal origin at xv; caeca Simple, originating at xxvii. TyphloSole Simple, lamelliform. Lymph glandS from 15/16. Holandric. Etymology. Named after the province Ba Ria-Vung Tau where the SpecieS iS widely diStributed. Description. External characters: Body cylindrical; medium Size, length 132–169 mm, diameter 4.1–6.1 mm, weight 1.64–3.39 gr, SegmentS 91–125 (N=9). DorSum greyiSh brown, ventrum paler. ProStomium 1/2 epilobouS (open). FirSt dorSal pore in 11/12 or 12/13. Preclitellar Setae Stouter and SparSer than poStclitellar Setae, 31–49 in viii, 57–82 in xxv, 11–17 Setae between two male porophoreS (N=9); Setal diStance aa = 1.5–2.5ab, zz = 1.5–2zy. Clitellum annular, xiv–xvi, without dorSal poreS and Setae. Female pore Single, in mid-ventral xiv. Three pairS of Spermathecal poreS in interSegmentS 6/7/8/9; ventral diStance between Spermathecal poreS approximately 0.4x body circumference. Male poreS located inSide copulatory poucheS on the Setal ring xviii; ventral diStance between male poreS about 0.35x body circumference. Genital markingS abSent in both Spermathecal and male pore regionS. Internal characters: Septa 5/6/7/8 thick, 8/9/10 abSent, 10/11/12 /13 Slightly thick. OeSophageal gizzard within viii–x. InteStinal origin at xv; caeca Simple, originating at xxvii, and extending anteriorly to xxiv or xxiii. LaSt heartS in xiii. Pharyngeal micronephridia developed in 5/6/7. TyphloSole Simple, lamelliform. Lymph glandS bag- Shaped, from 15/16. Three pairS of Spermathecae in vii–ix. Ampulla large, egg-Shaped; duct Short, ca. 1/3 ampulla length, Somewhat conStricted in the middle; micronephridia Surrounding duct of ampulla, moSt developed in Spermathecae at 6/7. Diverticulum Shorter than ampulla in Situ, but longer when extended, Strongly folded, directly attached to the middle of ampulla duct; diStal part of diverticulum enlarged to be a Small, oval-Shaped Seminal chamber. AcceSSory glandS 2–3, Small, muSroom-Shaped; duct long, attached to baSe of ampulla. Holandric. TeStiS SacS developed in x and xi, unconnected. Seminal veSicleS well developed in xi–xii. OvarieS inviSible; oviduct well developed after Septum 12/13. ProState glandS deeply lobuled, paired in xvi–xix; proStatic ductS long, Somewhat enlarge in middle, open in large chamber. AcceSSory glandS large and covering copulatory pouch. DNA barcodes. A 660bp fragment of the mitochondrial gene Cytochrome c oxydaSe Subunit I waS Sequenced from the holotype, and uploaded to GenBank with the acceSSion number MF481211. TABLE]. Morphological comparison of P.vungtauensis sp nov. with similar species within the P. dubia species group. All species lack genital markings in the spermathecal anđ male pores region. AG: accessory glanđs. MP: Male pores. Remarks. The new SpecieS can be keyed to the dubia group in SimS & EaSton (1972) characteriSed by having three pairS of Spermathecal poreS in interSegmentS 6/7/8/9. ThiS group currently conSiStS of ten SpecieS, Pheretima dubia HorSt, 1893, P. korinchiana Cognetti, 1922, P. poiana MichaelSen, 1913, all from IndoneSia; P. philippina RoSa, 1891, P. callosa GateS, 1937, P. balbalanensis Hong & JameS, 2010, P. banaoi Hong & JameS, 2010, P. globosa Hong & JameS, 2011, P. julkai Hong & JameS, 2011, P. lamaganensis Hong & JameS, 2011, all from the PhilippineS. Morphological differenceS among theSe SpecieS are Summarized in Table 1. Among theSe SpecieS, the new SpecieS iS fairly Similar to Pheretima balbalensis, P. banaoi, P. julkai, and P. lamaganensis, all from the PhilippineS, in having three pairS of Spermathecal poreS in interSegmentS 6/7/8/9, no genital markingS in Spermathecal and male regionS, and inteStinal caeca Simple. Pheretima balbalanensis iS diStinguiShed by inteStine beginning in xvi, caeca from xxviii, typhloSole veStigial, lymph glandS from xxviii, whereaS P. vungtauensis sp. nov. haS inteStine originating at xv, caeca from xvii, typhloSole lamelliform, bag- Shaped lymph glandS from 15/16. The new SpecieS iS different from P. banaoi in larger ventral diStance between maleS porophoreS (0.35x circumference vS. 0.19–0.22x), inteStinal origin (xv vS. xvi), the beginning of lymph glandS (15/16 vS. xxviii), form of typhloSole (lamelliform vS. Simple fold). The new SpecieS alSo differS from P. julkai and Ph. lamaganensis in ventral diStance between male poreS (0.35x circumference vS. 0.2–0.23x or 0.21– 0.22x), poSition of gizzard (viii–ix vS. viii), inteStinal origin (xv vS. xvi), typhloSole (lamelliform vS. abSent). Morphologically, the new SpecieS iS particularly Similar to Metaphire houlleti (Perrier, 1872) in body Shape, three pairS of Spermathecal poreS in interSegmentS 6/7/8/9, preSence of copulatory poucheS, Shape of Spermathecal ampulla and diverticulum, and preSence of aSSeSSory glandS in Spermathecal and male regionS (Perrier 1872). However, Pheretima vungtauensis sp. nov. iS diStinctly different from M. houlleti in having micronephridia on the Spermathecal ductS, and in the abSence of genital markingS in Spermathecal and male regionS. M. houlleti iS recogniSed by abSence of micronephridia on Spermathecal ductS, and preSence of Small genital markingS inSide Spermathecal and maleS poreS (Blakemore 2016). Molecular comparison. Due to theSe morphological SimilaritieS, the COI SequenceS from SpecimenS identified aS M. houlleti were included in the molecular analySiS. BaSed on COI SequenceS, the new SpecieS, Pheretima vungtauensis sp. nov., iS more cloSely related to M. houlleti than to other SpecieS of Pheretima; the holotype of the new SpecieS iS neSted within a clade formed by SpecimenS identified aS Metaphire houlleti (Fig. 2). It iS cloSely related to a Metaphire houlleti group from Thailand (II) with bootStrap and BI valueS of 88% and 1.00 BPP, reSpectively. However, the Kimura 2-parameter (K2P) diStance between the new SpecieS and Metaphire houlleti from Thailand (II) varieS from 0.148 to 0.2 (Table 2). ThiS diStance iS relatively cloSe to or higher than that for SpecieS delimination uSing COI barcodeS (0.15) aS diScuSSed in Chang & JameS (2011) and Jerathitikul et al. (2017). In addition, Metaphire houlleti nominal SpecieS iS branched into three cladeS, Vietnam + India + Philippine, Thailand (I) and Thailand (II). Each clade iS clearly different from otherS in genetic diStance (ranging from 0.175 to 0.222). Of theSe, two cladeS (Thailand I and II) are Separated with good Support of bootStrap and BI valueS of 70% and 0.99 BPP, reSpectively. BeSideS, Blakemore (2016) reportS on a 19% COI difference between two SpecimenS of M. houlleti, one from Thailand, the other one from the PhilippineS, indicating a "molecular SpecieS-group" (ibd.). Furthermore, Jeratthitikul et al. (2017) alSo Stated that M. houlleti nominal SpecieS containS Several new cryptic SpecieS. We agree that the nominal SpecieS M. houlleti needS to be reviSed baSed on SpecimenS collected from different regionS.Published as part of Nguyen, Tung T., Nguyen, Nam Q. & Nguyen, Anh D., 2018, First record of the earthworm genus Pheretima Kinberg, 1867 sensu stricto in Vietnam, with description of a new species (Annelida: Clitellata: Megascolecidae), pp. 251-258 in Zootaxa 4496 (1) on pages 252-257, DOI: 10.11646/zootaxa.4496.1.20, http://zenodo.org/record/144679
Analogues 5-Aza d'angucyclines : Première synthèse et évaluations" Q. Vu Nguyen, S. Collet, A. Guingant, G. Dujardin
No full textCommunication par affiche (présentée par Quang Vu Nguyen,)
First record of the earthworm genus Pheretima Kinberg, 1867 sensu stricto in Vietnam, with description of a new species (Annelida: Clitellata: Megascolecidae)
No full textNguyen, Tung T., Nguyen, Nam Q., Nguyen, Anh D. (2018): First record of the earthworm genus Pheretima Kinberg, 1867 sensu stricto in Vietnam, with description of a new species (Annelida: Clitellata: Megascolecidae). Zootaxa 4496 (1): 251-258, DOI: 10.11646/zootaxa.4496.1.2
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
Species of the Polistes (Polistella) (Hymenoptera: Vespidae: Polistinae) from Vietnam, with description of a new species and a pictorial key
No full textNguyen, 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. Zootaxa 4402 (2): 323-338, DOI: 10.11646/zootaxa.4402.2.
Metaphire setosa Nguyen & Nguyen & Lam & Nguyen 2020, new species
No full text<i>Metaphire setosa</i>, new species <p>(Figs. 1, 6)</p> <p> <b>Material examined.</b> Holotype: 1 mature (CTU-EW.179. h01), bushes (11°34′2.2″N, 106°35′46.9″E), 84.9 m, Tan Khai commune, Hon Quan District, Binh Phuoc Province, 26 October 2017, coll. Luong Thi Huynh Tien. Paratypes: 6 matures (CTU-EW.179.p02), same data as holotype.</p> <p> <b>Diagnosis.</b> Small-sized worm, length 57.0– 73.5 mm, average diameter 1.6–3.2 mm. Prostomium not developed. First dorsal pore in 13/14. Three pairs of spermathecal pores in ventral 6/7/8/9. Setae unusual, arranged as two setal rings. Clitellum saddle-shaped, xiv–xvi. Male pores deeply located inside copulatory pouches in the setal ring xix. Five pairs of genital markings in xvi–xviii and xxi–xxii. Holandric. Intestinal caeca simple. Septum 8/9 thick, 9/10 absent.</p> <p> <b>Description.</b> Body cylindrical, small size, length 57.0– 73.5 mm, average diameter 1.6–3.2 mm, weight 0.5–1.6 g, segments 94–121. Body pale. Prostomium not developed. First dorsal pore in 13/14. Setae unusual, arranged as two setal rings, more obvious on ventral side; pre-clitellar setae stouter and denser than post-clitellar ones; setal number 119–135 in viii, 27–42 in xxx; setal distance aa=ab, zz=zy. Clitellum saddle-shaped, xiv–xvi without setae and dorsal pores. Female pore single, on round disc-shaped pad in midventral xiv.</p> <p>Three pairs of spermathecal pores in dorsal intersegments 6/7/8/9; two bean-shaped pads surrounding each spermathecal pore. No genital markings in the spermathecal region. Male pores located deeply inside copulatory pouches in the setal ring xix. Ventral distance between two openings of copulatory pouches about 0.35× body circumference. Genital markings paired ventrally in xvi–xviii and xx–xxi, one pair in each segment.</p> <p>Septa 6/7/8/9 thick, 9/10 absent, 10/11/12/13 thin. Oesophageal gizzard after viii. 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.</p> <p>Three pairs of spermathecae in vii–ix. Ampulla large, mushroom-shaped; ducts long, about ½ ampulla length. Diverticula longer than ampulla, folded and directly attached to the base of ampulla duct; seminal chamber long, bulletshaped. Spermathecal ducts without nephridia. No accessory glands.</p> <p>Holandric. Testis sacs in x and xi, connected. Seminal vesicles developed in xi and xii. Ovaries in 12/13. Ovisacs invisible. Prostate glands deeply lobuled, paired in xviii–xx; duct long, folded before entering copulatory pouch which is slightly elevated from body wall. Five pairs of accessory glands.</p> <p> <b>DNA barcode.</b> The amplification of the mitochondrial gene cytochrome oxidase subunit I (COI) failed.</p> <p> <b>Etymology.</b> The specific epithet “ <i>setosa</i> ” alludes to the unusual setal arrangement on this earthworm. It is used as an adjective.</p> <p> <b>Remarks.</b> The new species is very unique among known <i>Metaphire</i> species, with regard to its saddle-shaped clitellum and setal arrangement. There has been no report on <i>Metaphire</i> species with saddle-shaped clitellum. More interestingly, the setal pattern is completely different from all known pheretimoid species in Vietnam. The unusual setal pattern was only seen in the <i>Amynthas polyperichaeta</i> (Thai, 1984). The male region was finely coarse with dense setae which was known as the setal zone.</p>Published as part of <i>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</i> on pages 230-232, DOI: 10.26107/RBZ-2020-0019, <a href="http://zenodo.org/record/4577217">http://zenodo.org/record/4577217</a>
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
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