23,510 research outputs found
Morphometric Measurements of Field and Laboratory-Reared Spotted-Wing Drosophila (2017-2018)
No full textThe data set contains wing length, wing width, and hind tibia length of laboratory-reared known summer and winter morphs of Drosophila suzukii. Summer morphs were reared on artificial diet at 16:8 (light:dark) and at 25°C. Winter morphs were reared on artificial diet at 12:12 (light:dark) and at 10°C. In addition, we recorded morphometric measurements on field-caught D. suzukii through-out the greater Twin Cities region in Minnesota.Winter and summer morph Drosophila suzukii can be difficult to distinguished based on a color scale. The purpose of this data were to find an alternative, quantitative method for identifying the two morphs using wing and/or hind tibia measurements.Minnesota Invasive Terrestrial Plants and Pests Center (through the the Environment and Natural Resources Trust Fund; mitppc.umn.edu)Tran, Anh K.; Hutchison, W. D.; Asplen, Mark K.. (2019). Morphometric Measurements of Field and Laboratory-Reared Spotted-Wing Drosophila (2017-2018). Retrieved from the University Digital Conservancy, https://doi.org/10.13020/7522-qp82
Tarzia, L., McKenzie, M., Forbes-Mewett, H., Tran, L.T., Murdolo, A., Navarro Medel, C., Ezer, P., Tran, G., Hach, M., McLindon, E. & Hegarty, K. (2025). Sex and relationships: Understanding your rights in Australia. The University of Melbourne.
No full textTarzia, L., McKenzie, M., Forbes-Mewett, H., Tran, L.T., Murdolo, A., Navarro Medel, C., Ezer, P., Tran, G., Hach, M., McLindon, E. & Hegarty, K. (2025). Sex and relationships: Understanding your rights in Australia. The University of Melbourne
An analytical, phenomenological and numerical study of geophysical and magnetohydrodynamic turbulence in two dimensions
No full textIn this thesis I study a variety of two-dimensional turbulent systems using a
mixed analytical, phenomenological and numerical approach. The systems under
consideration are governed by the two-dimensional Navier-Stokes (2DNS),
surface quasigeostrophic (SQG), alpha-turbulence and magnetohydrodynamic (MHD)
equations. The main analytical focus is on the number of degrees of freedom
of a given system, defined as the least value such that all
-dimensional ( ≥ ) volume elements along a given trajectory contract
during the course of evolution. By equating with the number of active
Fourier-space modes, that is the number of modes in the inertial range, and
assuming power-law spectra in the inertial range, the scaling of with the
Reynolds number allows bounds to be put on the exponent of the spectrum.
This allows the recovery of analytic results that have until now only been
derived phenomenologically, such as the [superscript(-5/3)] energy spectrum in the
energy inertial range in SQG turbulence. Phenomenologically I study the modal
interactions that control the transfer of various conserved quantities. Among
other results I show that in MHD dynamo triads (those converting kinetic into
magnetic energy) are associated with a direct magnetic energy flux while
anti-dynamo triads (those converting magnetic into kinetic energy) are
associated with an inverse magnetic energy flux. As both dynamo and anti-dynamo
interacting triads are integral parts of the direct energy transfer, the
anti-dynamo inverse flux partially neutralises the dynamo direct flux, arguably
resulting in relatively weak direct energy transfer and giving rise to dynamo
saturation. These theoretical results are backed up by high resolution
numerical simulations, out of which have emerged some new results such as the
suggestion that for alpha turbulence the generalised enstrophy spectra are not
closely approximated by those that have been derived phenomenologically, and
new theories may be needed in order to explain them
Top-k Exploration of Query Candidates for Efficient Keyword Search on Graph-Shaped (RDF) Data
No full textTran DT, Wang H, Rudolph S, Cimiano P. Top-k Exploration of Query Candidates for Efficient Keyword Search on Graph-Shaped (RDF) Data. In: Ioannidis YE, Lee DL, Ng RT, eds. Proceedings of the 25th International Conference on Data Engineering (ICDE’09). 2009: 405-416
Phuc Tran: Author, Teacher, Tattoo Artist
No full textProfile of Phuc Tran. Tran taught classical languages in middle and high schools in Maine and New York for years. He also owns a tattoo shop in Portland and has written a highly acclaimed novel titled Sigh, Gone about his family\u27s move to Pennsylvania from Vietnam in 1975. In this piece, Tran briefly discusses community, language, and how it feels being an Asian American in Maine
Oral History of Alexander Tran
No full textAn oral history of Mr. Alexander Tran who was born on March 8, 1984, in Orange, California. His family immigrated to America in 1975 through connections with the U.S. Embassy. His parents were first located in Oklahoma before they decided to relocate in Southern California. Throughout his K-12 education, Alexander hopped around from different schools that had primarily dominant Vietnamese populations among the students. In 2002, he began his studies as an art major at UC Irvine and later dropped out of school in 2005. In 2008, Alexander became apart of an organization called the Viet Rainbow of Orange County, where he found a supportive group of people who focus on LGBTQ issues within the Vietnamese community. Currently, he resides in Irvine, California with his parents and attends Santa Ana College. He also works as a pharmacy tech at Kaiser Permanente and, in his free time, he does freelance makeup and volunteers with the VROC organization.Recorded digitall
TRAN Quyet Thang
No full text학위논문(박사)--아주대학교 일반대학원 :전자공학과,2017. 2CHAPTER 1: INTRODUCTION 1
1.1 Introduction to Light Modulating Devices 1
1.2 Introduction to Graphene 1
1.3 Overview of the Numerical Methods 3
1.4 Organization of Dissertation 7
CHAPTER 2: TUNABLE WIDE-ANGLE TUNNELING IN GRAPHENE-ASSISTED FRUSTRATED TOTAL INTERNAL REFLECTION 9
2.1 Introduction 9
2.2 Frustrated Total Internal Reflection (FTIR) Effect 10
2.3 Controllable Wide Angle Tunneling Effect with ENZ Effect in FTIR Configuration 11
2.4 Waveguide-type optical modulator based on a GA-FTIR structure 20
2.5 Chapter Summary 26
CHAPTER 3: LOW LOSS ELECTRICALLY CONTROLLABLE VERTICALLY COUPLED DIRECTIONAL COUPLER 28
3.1 Introduction 28
3.2 Vertically Coupled Directional Coupler 29
3.3 Chapter Summary 40
CHAPTER 4: OPTICAL PHASE MODULATOR BASED ON GRAPHENE EMBEDDED ALL PASS FILTER 42
4.1 Introduction 42
4.2 Phase Modulating All Pass Filter with Graphene 42
4.3 Chapter Summary 48
CHAPTER 5: COUPLED MODE THEORY OF PERFECT GRAPHENE ABSORBERS IN DUAL-MODE/SINGLE-MODE COUPLED RESONATORS SYSTEM 50
5.1 Introduction 50
5.2 Dual Mode - Single Mode Coupled Resonators System 51
5.3 Temporal Coupled Mode Theory of the "Triple-mode absorber" 52
5.4 Numerical verification of the CMT 59
5.5 Chapter Summary 66
CHAPTER 6: CONCLUSION AND FUTURE WORK 68
6.1 Conclusion 68
6.2 Future Work 68
REFERENCES 70
APPENDIX: AUTHOR'S PUBLICATIONS LIST 79DoctoralOne of the most important component of integrated photonics is a class of devices known as light modulation devices, which allow us to modulate and manipulate the flow of light, similar to the role transistor played in electronics. Only recently introduced, but graphene have shown incredible promises as a "miracle" material in electronics, with properties ranging from zero band gap, very high electrical mobility, ultra broadband optical responses, and the ability to drastically modify its optical properties through chemical or electrical doping.
In this dissertation, the author presented several unique nanostructures to exploit the aforementioned graphene characteristics to create light modulation devices with superior performance characteristics. Novel effects including wide angle extraordinary reflection causes by epsilon near zero effect and wide angle extraordinary transmission causes by coupling of plasmonic supermodes, phase modulation with near unity amplitude transmission with all pass filter, and graphene perfect absorber with a coupled system of dual mode/single mode resonator was thoroughly investigated, theoretically and numerically. The effects was also presented in practical nanostructures better suited for applications, which are also numerically investigated with various numerical methods
Phallostethus cuulong Shibukawa, Tran & Tran, 2012, new species
No full textPhallostethus cuulong, new species New Vietnamese name: Cá bụng đầu (Figures 1–4) Holotype. ZRC 53233, male, 24.2 mm SL, a branch of Hau River (a distributary of Mekong), Cu Lao Dung, Soc Trang Province, Vietnam (9 ° 30.8 ’ N, 106 ° 13.7 ’ E), 0–0.5 m depth, 31 July 2009, collected by K. Shibukawa. Paratypes. Total eight specimens (five males and three females), 20.0– 24.5 mm SL: CTU-P 2327, 1 specimen (female), 23.7 mm SL, Duyen Hai, Tra Vinh Province, Vietnam (9 ° 40.9 ’ N, 106 ° 30.7 ’ E), 0.3–0.8 m depths, 5 April 2009, collected by K. Shibukawa, V.V. Tran and L.X. Tran; CTU-P 2494, 1 specimen (male), 22.5 mm SL, My Thanh River (a distributary of Mekong), Vinh Chau, Soc Trang Province, Vietnam (9 ° 22.7 ’ N, 106 ° 0.7 ’ E), 0.5–1.2 m depths, 1 August 2009, collected by H.P. Ha, V.V. Tran and L.X. Tran; CTU-P 5020, 1 specimen (male, cleared and stained), 23.5 mm SL, Cho Lach, Ben Tre, Vietnam (10 ° 10.5 ’ N, 106 °. 8.9 ’ E), 0.5 m depth, 3 February 2010, collected by L.X. Tran; NSMT-P 106664, 1 specimen (male), 20.0 mm SL, collected with CTU-P 2494; NSMT-P 106665, 1 specimen (female), 22.0 mm SL, collected with CTU-P 2494; USNM 404477, 1 specimen (female), 23.8 mm SL, collected with CTU-P 2494; USNM 404478, 1 specimen (male), 20.3 mm SL, Cau Ke, Tra Vinh Province, Vietnam (9 ° 57.1 ’ N, 106 ° 1.8 ’ E), 0.5–3.5 m depths, 28 May 2010, collected by L.X. Tran; USNM 404479, 1 specimen (male, cleared and stained), 24.5 mm SL, collected with CTU-P 5020. Diagnosis. Phallostethus cuulong is distinguished from congeners in having following characters: seven serrae on the second ctenactinium in adult males (vs. five and eight in P. dunckeri and P. l e h i, respectively); 11–13 pectoral-fin rays (vs. 9–10 and 12 in P. dunckeri and P. l e h i, respectively); 11–14 + 25-26 = 37–40 vertebrae (vs. 13 + 27 = 40 and 12 + 28 = 40 in P. dunckeri and P. l e h i); approximately 5–19 teeth on paradentary (vs. 15–20 and 28 or more in P. dunckeri and P. le h i, respectively). All six examined males are dextral (vs. one and two known males of P. dunckeri are sinistral and dextral respectively, and all four know males of P. l e h i are sinistral). Description. Counts of the holotype are asterisked, and the frequency of each count is given in parentheses following the relevant count. Dorsal-fin rays 7 (2), 8 * (6) or 9 (1); anal-fin rays 24 * (4), 25 (1), 26 (3) or 27 (1); pectoral-fin rays 11 (2), 12 * (7) or 13 * (9); scales in lateral series 34 (5), 35 * (10) or 36 (3); predorsal scales 1 + 25 (1), 2 + 25 (1), 2 + 26 (4) or 2 + 27 * (3); transverse scales 6 (3), 7 * (12) or 8 * (3); circumpeduncular scales 12 * (8) or 13 (1); paradentary teeth approximately 5 (1), 6 (3), 7 (3), 8 (3), 10 (1), 13 * (1), 14 (2), 15 * (1), 18 (2) or 19 (1). The following measurements are % of SL: head length 22.1–24.1; snout length 7.0– 8.5; eye diameter 6.7–7.3; interorbital width 3.3–5.2; length of jaw 8.0– 9.4; predorsal length 78.0– 82.6; preanal length 46.4–48.7; maximum body depth 15.0– 18.7; body depth at anal-fin origin 12.4 –15.0; body width 9.4 –14.0; caudal-peduncle length 18.6–20.7; caudal-peduncle depth 5.6–7.6; length of dorsal-fin base 9.1–10.5; length of anal-fin base 32.3–36.7; pectoral-fin length 14.6–19.1; caudal-fin length 20.1–22.4. Head depressed anteriorly, with flat or barely concave interorbital space. Dorsal surface of head with membranous dome when alive or freshly collected (which can be seen in the cleared and stained specimens, e.g., Fig. 4), but shrunken and not apparent in alcohol specimen. Snout rather pointed. Eyes lateral on head, large, diameter slightly less than snout length. Mouth terminal or subterminal; jaws small, barely extend to a level of anterior margin of eye; upper jaws highly protractile. Body compressed, moderately deep. Anus and urogenital openings anterior, ventral to pectoral-fin base. A slightly frayed, fleshy membranous mid-ventral keel between urogenital opening and anal-fin origin. In males, a distinct mid-ventral groove, deepened and widened anteriorly, supports the priapium and mid-ventral keel. Pectoral fin falcate, the uppermost branched ray longest in most specimens; pectoral-fin rays branched, except for the uppermost 1 (uppermost nubby ossicle not included here; see “Materials and Methods” above) and lowermost 1–2 rays unbranched. Pelvic fin absent in males, present but rudimentary in females (Fig. 3). First dorsal fin absent; origin of second dorsal fin at, or slightly before, a level of posterior end of anal-fin base; anterior 2–3 rays simple, whereas the other rays branched. Anal fin with a long base, commencing well before midlength; anterior 2–4 rays simple, whereas the other rays branched. Caudal fin emarginate, symmetrical dorsoventrally. Male bilaterally asymmetric, dextral; namely, seminal papilla offset to right side of body (= aproctal side), and anus offset to left side of body (= proctal side); a long rod-like toxactinium curved from left to right; a large fleshy pad, the pulvinulus, covers articulation point of toxactinium and aproctal axial bone (Fig. 3). Scales on body cycloid, moderately large and deciduous; scales on abdomen largest; body entirely scaled, except for pectoral-fin base, mid-ventral groove before anal-fin origin, and mid-predorsal narrow naked space slightly behind occipital region; head and fins naked, except for posterior part of occipital region and basal part of caudal fin with some scales. Teeth on premaxilla and dentary unicuspid, slightly curved inward. Paradentary slender (as in Phallostethus dunckeri illustrated by Parenti, 1984: 4, fig. 1), with 5–19 minute teeth laterally; teeth on paradentary form a uniserial row or, in some larger specimens, biserial rows; teeth on inner row, if present, much smaller than those on outer row. Cephalic sensory canals reduced, comprising: two short infraorbital canals (each with terminal pores only) anteriorly and anteroventrally to eye; preopercular canal (with 6–7 pores). Main external bones in males including a long, curved toxactinium and a short stout ctenactinium with seven serrae dorsally (not including a hook-like distal tip); two smallest males examined (CTU-P 2493 and USNM 404478, 20.0– 20.3 mm SL) bearing 5–6 serrae on ctenactinium, assumued to represent the immature condition (and not included in the diagnosis, above). First pleural rib attached to fifth vertebra in males, fourth in females; first pleural rib in female much shorter than in male. Branchiostegal rays 4. Color when alive or freshly collected. Body subtranslucent in life, but whitish immediately after death (Fig. 1); a bright white blotch over brain when alive (assumed to fade just after death); iris silvery; minute melanophores scattered on snout, cheek and jaws; a melanophore at angle of lower jaw; a large reddish yellow blotch, slightly smaller than eye, at mid-lateral caudal fin base; male priapium with several large and small melanophores, particularly on the aproctal side (= right side in the new species) just anterior to the base of second ctenactinium; a series of minute black dots along mid-lateral septum of body musculature at least on caudal part of body; inner side of pectoral fin with many melanophores at least dorsally (the area with melanophores much more broader in females than in males); a series of mid-ventral black dots from anal-fin origin to caudal-fin base; other fins transparent. Color in alcohol. Head and body pale straw-colored; a series of irregular-sized melanophores (several of them dash-like) along midlateral septum of body musculature (at least on caudal part); paired patches of melanophores on anterior part of snout dorsally; many melanophores scattered on head above neurocranium, those posterior distinctly larger than those anterior; a melanophore at angle of lower jaw; a patch of minute gular melanophores; two patches of melanophores at throat and just behind urogenital opening in females; male priapium with several large and small melanophores, particularly on the aproctal side (= right side in this species) just anterior to the base of second ctenactinium; a mid-ventral series of black dots from anal- to caudal-fin bases, each along anal-fin base on interspace between fin rays (continuous and forming a irregular blackish gray line in some specimens); inner side of pectoral fin with many melanophores dorsally (the area with melanophores much broader in females than in males); caudal fin covered by numerous minute melanophores; other fins transparent. Distribution, habitat and the other notes. Phallostethus cuulong is known from nine specimens, six males and three females, collected from shallow waters (<1.2m depth) around banks of slow-flowing turbid canals and rivers with soft muddy bottoms in Soc Trang and Tra Vinh Provinces, Vietnam. The first author (KS) observed that a fish, latter designated as one of the paratypes of Phallostethus cuulong (NSMT-P 106665), swam slowly at the water surface around a bank of the slow-flowing tidal canal with dense semi-aquatic vegetation. A bright white blotch on dorsal surface of head was clearly confirmed in the field, but less vivid than that of the sympatric aplocheilid, Aplocheilus panchax (well-known for its reflective “pineal” spot on the top of the head). When the fish was disturbed, it quickly swam a short distance away from the original position; it was subsequently scooped up carefully using a hand net by KS. The species was usually solitary, and collected by hand nets or seine nets. Like the other phallostethids in the Vietnamese Mekong, this species has never been seen in the fish markets. As far as we aware, all fishes of the family Phallostethidae have no vernacular names in the Vietnamese Mekong (except for the new species herein named), since they are usually overlooked. Etymology. The specific name, cuulong, is the Vietnamese name of the Mekong delta (Cưu Long), where the type series of the new species was collected. The name, here applied as a noun in apposition, means “nine dragons,” in reference to nine distributaries of the Mekong basin in Vietnam. Remarks. Following the key to genera of phallostethid fishes by Parenti (1989), the new species is clearly assigned to Phallostethus by having the combination of, e.g., shield-like pulvinulus, large seminal papilla, long toxactinium, membranous dome on dorsal surface of head, 24–27 anal-fin rays, 37–40 vertebrae, serrated ctenactinium, non-projecting lower jaw beyond upper jaw, no first dorsal fin, and 7–9 second dorsal-fin rays. In particular, no other phallostethid genera are known that bear 24 or more anal-fin rays (vs. 22 or less anal-fin rays in the other phallostethids). Within the genus, the new species resembles the Bornean species Phallostethus lehi in sharing 11–13 pectoral-fin rays, but differs in having seven serrae on second ctenactinium in adult (vs. eight in P. l e h i), 25–26 caudal vertebrae (vs. 28), and 6–19 paradentary teeth (vs. 28 or more). All six examined males of the new species are dextral, immediately distinguishing them from sinistral males in P. l e h i. The new species is also distinguished from Phallostethus dunckeri, known only from Johor, Malay Peninsula but presumed to be extinct (Parenti, 1996), by having seven serrae on second ctenactinium in adults (vs. five in P. d u n c k e r i), 11–13 pectoral-fin rays (vs. 9–10), and 25–26 caudal vertebrae (vs. 27). Sexual dimorphism in the pleural ribs was reported from Phallostethus lehi by Parenti (1996); according to her, the species has the first pair of pleural ribs on the fifth vertebrae in males, the fourth vertebrae in females. This dimorphism is also found in Phallostethus cuulong. Furthermore, P. cuulong appears to show sexual dimorphism in the number of precaudal vertebrae: all six males examined have 13–14 precaudal vertebrae, as against 11–12 in all three females examined. Although Parenti & Louie (1998) reported similar sexual dimorphism in vertebral counts from four species of Neostethus, hitherto it has never been known from the other species of Phallostethus.Published as part of Shibukawa, Koichi, Tran, Dinh Dac & Tran, Loi Xuan, 2012, Phallostethus cuulong, a new species of priapiumfish (Actinopterygii: Atheriniformes: Phallostethidae) from the Vietnamese Mekong, pp. 45-51 in Zootaxa 3363 on pages 46-51, DOI: 10.5281/zenodo.28164
Ranatra rafflesi Tran & D. Polhemus 2012
No full textRanatra rafflesi Tran & D. Polhemus, 2012 (Fig. 1C–E) Ranatra rafflesi Tran & D. Polhemus, 2012: 104–106 (type locality: Singapore). Material examined. MALAYSIA – Sarawak: 1 male (ZRC _ ENT00012970), Sarawak, Sg. Stuum Muda, coll. H. H. Tan, 2 September 1996, THH9694; 2 males, 1 female (ZRC _ ENT00012971–73), Sarawak, Batu Kawa–Matang area, coll. H. H. Tan, 13 January 1996, THH9601; 1 male (ZRC _ ENT00012974), Sarawak, Sibu, coll. H. H. Tan & R. Kerle, 3 March 1998, THH9811; 3 males, 1 female (ZRC _ ENT00012975–78), Sarawak, 10 km from Kuching, coll. H. H. Tan, 4 September 1995, THH9556; 1 male, 1 female (ZRC _ ENT00012979–80), Sarawak, Kuching to Matang road, coll. H. H. Tan, 14 January 1996, THH9608; 2 males, 4 females (ZRC _ ENT00012981–83), Sarawak, 8 km towards Gedong, from Serian – Sri Aman road, coll. H. H. Tan, 16 January 1996, THH9613; 2 males, 1 female (ZRC _ ENT00012984–86), Sarawak 92-42; 1 male, 2 females (ZRC _ ENT00012987–88), Sarawak, MK94-55; 1 male, 1 female (ZRC _ ENT00012989–90), Sarawak, blackwater ditch 2 km fr. Kuching, Mantang Batu Kawa Rd from aff. (on way to Kuching) T-junction, coll. K. Lim, 3 July 1992, 92-45. INDONESIA – Bintan: 1 male (ZRC.6.17711), P. Bintan, 47 km to Tg. Pinang, 1°06′38.1″N, 101°29′18.0″E, [coll. unknown], 27 April 1994, HH008; 1 male, 3 females (ZRC.6.17701), P. Bintan, 1°10′26.2″N, 104°27′28.3″E, upstream, [coll. unknown], 27 April 1994, HH003; 3 males, 4 females (ZRC _ ENT00012941–44), Pulau Bintan, coll. Y. Chia, June 1993, TT11; 4 males (ZRC _ ENT00012944–48), Pulau Bintan, coll. Y. Chia, June 1993, TT9; 3 males, 2 females (ZRC _ ENT00012949–52), Pulau Bintan, coll. Y. Chia, June 1993; 1 male (ZRC _ ENT00012953), Pulau Bintan, north, coll. H. H. Tan, 27 June 1995, THH9531. INDONESIA – Sumatra: 1 male (ZRC.6.17685), Sumatra, Jambi, Sg. Alai, [coll. unknown], 21 June 1995, JMB9511; 1 male, 5 females (ZRC _ ENT00012954–55), Sumatra, east Jambi, coll. H. H. Tan, 22 November 1996, THH96153; 2 males, 2 females (ZRC _ ENT00012956–58), Sumatra, east Jambi, coll. H. H. Tan, 22 November 1996, THH96154; 2 males, 1 female (ZRC _ ENT00012959–61), Sumatra, Jambi, Danau, Kamining nr. Kg. Transos, water pH 6.1, coll. M. Kottelat & H. H. Tan, 31 May 1994, MK94-38; 1 male (ZRC _ ENT00012962), Sumatra Selatan, clear water stream through rubber estate, along road to Sungei Merdak, 7 km into Desa Suka Jaya, coll. H. H. Tan, 11 December 2003, THH03-69; – Banka: 1 male (ZRC _ ENT00012963), Sumatra, Banka, between Kg. Kurau and Kg. Balilik, 25 km N. of Koba, coll. M. Kottelat et al., 3 March 1993, BANGKA 93-95. INDONESIA – Nias: 2 males, Southern Nias, surrounding of Telukdalam, coll. M. A. Jäch, 12 February 1990 (NHMW). INDONESIA – West Kalimantan: 4 males, 4 females (ZRC _ ENT00013054–58, 69–71), 2 nymphs, W. Kalimantan, Sg. Sekawi – Danau Sekawi, coll. Y. Y. Goh et al., 14 May 1998, GYY70 [with paramere of slender form]; 1 male (ZRC _ ENT00013059), W. Kalimantan, Danau Pantu, coll. Y. Y. Goh et al., 4 May 1998, GYY51 [with paramere of slender form]; 2 males, 1 female (ZRC _ ENT00013000–02), W. Kalimantan, btw. Sekadau and Sintang, coll. H. K. Lua, H. H. Tan & D. Wowor, 22 April 1998, LHK0371/ THH9842; 7 males, 5 females (ZRC _ ENT00013003–010), 2 nymphs, W. Kalimantan, Sintang, Sekadau–Sintang Rd., coll. H. K. Lua, H. H. Tan & D. Wowor, 22 April 1998, LHK0372/THH9843 [with variations in parameres: specimens ZRC_ENT00013003–04 with paramere of slender form, same as that in GYY70 sample; others intermediate between holotype and the slender form or same as holotype]; 1 male (ZRC _ ENT00013011), Kalimantan, Sanggau, along Sekadau–Sintang road, coll. H. K. Lua, H. H. Tan & D. Wowor, 25 April 1998, LHK0378; 1 male, 3 females (ZRC _ ENT00013012–13), 1 nymph, W. Kalimantan, Pontianak, Sg. Luar nr. Sg. Tayan, coll. H. K. Lua, H. H. Tan & D. Wowor, 26 April 1998, LHK380/THH9854; 9 males, 4 females (ZRC _ ENT00013014–23, 66–68), 2 nymphs, Kalimantan, Pontianak, Lobok Raundal nr. Sg. Tayan, coll. H. K. Lua, H. H. Tan & D. Wowor, 26 April 1998, LHK0381 [parameres: intermediate form between holotype and the slender form as that in GYY70 sample]; 6 males, 6 females (ZRC _ ENT00013024–30), 1 nymph, Kalimantan, Pontianak, Gg. Semahung, nr Pahuman, coll. H. K. Lua, H. H. Tan & D. Wowor, 27 April 1998, LHK0383/ THH9857 [paramere of intermediate form]; 3 males, 1 female (ZRC _ ENT00013031–34), Kalimantan, Pontianak, Sg. Belado, Gg. Kloncet, coll. H. K. Lua, H. H. Tan & D. Wowor, 28 April 1998, LHK0384; 7 males, 7 females (ZRC _ ENT00013035–42), Kalimantan, Pontianak, Anjungan ‘D’, coll. H. K. Lua, H. H. Tan & D. Wowor, 28 April 1998, LHK0385/THH9860 [paramere of intermediate form]; 6 males, 4 females (ZRC _ ENT00013043–49), Pontianak, Sg. Kepayan, Pontianak–Anjungan road, coll. H. K. Lua, H. H. Tan & D. Wowor, 29 April 1998, LHK0386 [some with parameres of intermediate form, others same as holotype]; 1 male (ZRC _ ENT00013050), W. Kalimantan, Pontianak, Anjungan, Sg. Jelimpo, coll. H. H. Tan & Y. Y. Goh, 28 April 1998, THH9859 [paramere of intermediate form]; 1 male (ZRC _ ENT00013051), W. Kalimantan, Desa Tekalong, coll. Y. Y. Goh et al., 8 May 1998, GYY62 [paramere of intermediate form]; – South Kalimantan: 1 male, 1 female (ZRC _ ENT00013052–53), Kalimantan Selatan, Batulicin basin; stream at Simpang Alok, along road from Batulicin to Mantewe, Desa Gunung Raya, coll. H. H. Tan et al., 14 September 2011, THH11-11 [paramere of intermediate form]; – East Kalimantan: 2 males, 3 females (ZRC _ ENT00013072– 76), 1 nymph, Kalimantan Timur, Mahakam basin, Taman Wisata Air Tejun, coll. H. H. Tan & D. Wowor, 11 November 1999, THH9976 [paramere of intermediate form]; 1 male, 1 female (ZRC _ ENT00013077–78), Kalimantan Timur, Mahakam basin, coll. H. H. Tan & D. Wowor, 11 November 1999, THH9977. Diagnosis. Body length: males 21.0–24.0, females 25.0–29.0; siphon length ca. 0.80–0.95× body length; lorum higher than clypeus; vertex higher than eye, with low conical tubercle; eye width ca. 1.0–1.1× interocular width; space between middle coxae about as wide as space between hind coxae; posterior margin of metasternum truncate, only slightly convex; basal part of fore femur about 1.6× as wide as distal part; hind femur, when folded back parallel to body, slightly surpassing apex of abdomen in males, reaching apex of abdomen in females; paramere tapering along distal third, apical hook evenly curved, tip of hook expanded, ventral margin with a broadly triangular tooth immediately basad of hook (Fig. 1C–E). Remarks. This species is closely related to Ranatra natunaensis by having similar paramere structures. Tran & Polhemus (2012) provided comparative notes for these two species. Our examination of numerous further specimens, as listed above, has revealed differences in the paramere structure within samples from the type locality, Singapore, as well as within some samples from other areas. Such variation of the type specimens (from Singapore and from Bintan and Batam of Indonesia) was not reported in the original description by Tran & Polhemus (2012). In the holotype, the width of the apical hook is slightly greater than the width of the middle part (Fig. 1C). In the “slender form” (Fig. 1E), the middle part and/or the distal constriction before the apical hook is sometimes more slender than that of the holotype, thus the width of the apical hook appears greater than the width of the middle part. The most slender form occurs in samples GYY70 and GYY51 from West Kalimantan, Borneo (Fig. 1E). These samples also exhibit some other differences from the type material of R. rafflesi, such as the space between the middle coxae being very narrow, and the ventral teeth on the fore femur being slightly smaller (so that the width of the femur across the larger tooth is slightly smaller than the maximum width of the femur in the basal half). Several other samples from Kalimantan, as noted in the Material examined section, contain both the most slender form of paramere (like those in samples GYY70 and GYY51), the typical form (same as the holotype), and also intermediate forms (Fig. 1D); however, the shape of the apical hook and the triangular sub-apical tooth of the paramere are consistent among these forms. The distance between the middle coxae is also variable, but always narrower than the distance between the hind coxae. Because these differences occur within localities, we treat them as intra-specific and intrapopulation variations. Distribution. Singapore, Borneo (Sarawak), and Indonesia (Bintan, Batam, and Sumatra) (Tran & Polhemus, 2012; Tran & Poggi, 2019). First records from Kalimantan (Borneo) and Nias Island.Published as part of Tran, A. D. & Zettel, H., 2021, Taxonomy of the Ranatra biroi group sensu Lansbury, 1972 (Nepomorpha: Nepidae), with descriptions of two new species, pp. 507-521 in Raffles Bulletin of Zoology 69 on pages 510-511, DOI: 10.26107/RBZ-2021-0068, http://zenodo.org/record/717461
Data supporting: Comparing Drosophila suzukii flight behavior using free-flight and tethered flight assays
No full textThe data set contains flight behaviors of lab-reared summer and winter morphs Drosophila suzukii on a tethered flight mill and in a free flight chamber. For tethered flight mill we recorded propensity (flight or no flight), velocity, density, and duration of flight. For the free flight chamber we recorded propensity, phototaxis (flight towards sunlight cue), bouts (the number of take-offs), and duration of flight.Winter and summer morph Drosophila suzukii flight behavior on a tethered flight mill and free flight chamber was documented. The purpose of this data were to document the limitations, benefits, and effects the two methods could have on assessing an insect’s flight capacity.Minnesota Invasive Terrestrial Plants and Pests Center (through the the Environment and Natural Resources Trust Fund; mitppc.umn.edu)Kees, Aubree M; Tran, Anh K; Hutchison, William D; Aukema, Brian H; Rao, Sujaya; Rogers, Mary A; Asplen, Mark A. (2022). Data supporting: Comparing Drosophila suzukii flight behavior using free-flight and tethered flight assays. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/4nsz-x660
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