117,098 research outputs found
Guiodytes cavicola Tian 2013
No full textGuiodytes cavicola Tian, 2013: 116 Type locality: Nongshui Cave, in Shangjia, Disu, Du’an County of northern Guangxi. Male genitalia (Figs. 2–3): Median lobe of aedeagus comparatively more elongate, moderately arcuate, ventral margin bisinuate, gradually contracted towards apex which is very narrow; basal orifice large; inner sac armed with a very long longitudinal copulatory piece; right paramere well developed, especially on base, left one narrower, shorter and very thin, each bearing 3–4 long setae apically. Additional material examined: 2 males and 1 female, Guangxi: Du’an County: Chengjiang: Ganwan: Nongzhong Cave I, 23 ° 56.644 N, 108 ° 10.072 E, 469 m, 2013 VI- 27, leg. Mingyi Tian, Wei Lin, Weixin Liu, Haomin Yin & Sunbin Huang; 1 male and 2 females, Guangxi: Du’an County: Longwan: Nongqu Cave I, 23 ° 56.021 N, 108 ° 10.962 E, 459 m, 2013 -VI- 27, leg. Mingyi Tian, Wei Lin, Weixin Liu, Haomin Yin & Sunbin Huang. All specimens are deposited in the insect collections of South China Agricultural University, Guangzhou, China (SCAU), except one male in Muséum National d'Histoire Naturelle, Paris, France (MNHN). Distribution: Du’an County, northern Guangxi. Known from three limestone caves in Disu, Chengjiang and Longwan, respectively (Fig. 1).Published as part of Tian, Mingyi, 2014, New records and a new species of the cavernicolous genus Guiodytes Tian, 2013 from Guangxi, China (Coleoptera: Carabidae: Scaritinae), pp. 355-362 in Zootaxa 3861 (4) on page 357, DOI: 10.11646/zootaxa.3861.4.5, http://zenodo.org/record/22532
Uenotrechus Deuve et Tian 1999
No full textKey to species of the genus Uenotrechus Deuve et Tian, 1999 1 Mentum tooth bifid, male genitalia long and elongated, with a distinct sagittal aileron, apical lobe notched and distinctly reflexed in lateral view. The northern congeners............................................................. 2 - Mentum tooth simple, male genitalia short and stout, lacking sagittal aileron, apical lobe bent at tip or strongly hooked ventrally in lateral view. The southern congeners................................................................ 3 2 Head expanded laterally, hind pronotal angles bluntly rectangular, base of pronotum more or less sinuate........................................................................................ Uenotrechus liboensis Deuve et Tian - Head subparallel-sided, hind pronotal angles pointedly rectangular, base of pronotum nearly straight.................................................................................. Uenotrechus nandanensis Deuve et Tian, bona sp. 3 Hind angles of pronotum broadly obtuse, elytra strongly convex, median lobe of aedeagus shortly bent and hooked ventrally at tip, each of the right and left parameres bearing three long apical seta......... Uenotrechus gejianbangi Tian et Wei, sp. n. - Hind angles of pronotum rectangular, elytra less convex, median lobe of aedeagus largely bent and strongly hooked ventrally, each of the right and left parameres bearing four long apical setae............... Uenotrechus deuvei Tian et Chen, sp. n.Published as part of Wei, Guofu, Chen, Jujian & Tian, Mingyi, 2017, A review of the aphaenopsian ground beetle genus Uenotrechus Deuve et Tian, 1999 (Coleoptera: Carabidae: Trechinae), pp. 361-373 in Zootaxa 4282 (2) on pages 362-363, DOI: 10.11646/zootaxa.4282.2.9, http://zenodo.org/record/81874
Hexachaetus prodigus Tian & Deuve 2006
No full textHexachaetus prodigus Tian & Deuve, 2006 (Figure 10) Tian & Deuve, 2006: 150 Length: 16.0 mm; width: 6.5 mm. Habitus as in Fig. 10. Diagnosis. Head and mandibles black, disc of pronotum, underside of head dark brown, other parts of the body red brown; glabrous species, strongly shiny; microsculptural engraved meshes indistinct on head and pronotum, obscurely isodiametric on elytra; head stout, as long as wide, labrum straight at front; ligula short and wide, 6- setose at apex, with median two longer than other; pronotum transverse, PW/PL=1.60, widest at about middle; lateral expanded margin narrow, not reflexed; elytra elongate-ovate, EL/EW=1.46, base well-bordered, parallelsided, apical margin gently and obliquely truncated, denticulate at the tip; fore tibia stout, with outer angle remarkably rectangular; middle and hind coxae glabrous in median portion, hind tarsomeres 1 longer than 2, while 3 as long as 4. Male: Unknown. Material examined. 1 female, the holotype, “ Dalat, Annam, III-IV, 1924” and “R. I. SC. Nat. Belg., I. G. 16.500”, in IRSNB; 1 female, “ Coll. I.R. Sc.N.B / Vietnam: Dong Nai Biosphere, 11°18 N, 107°06 E / 25. VI. 6. VII. 2012, nigh collecting, leg. J Constant & J. Bresseel / I. G.: 32.161”, in IRSNB. Distribution. Vietnam (Fig. 20 h).Published as part of Tian, Mingyi & Deuve, Thierry, 2016, Re-definition and review of the Oriental genus Hexachaetus Chaudoir, 1871 (Coleoptera: Carabidae: Orthogoniini), pp. 540-554 in Zootaxa 4169 (3) on page 551, DOI: 10.11646/zootaxa.4169.3.7, http://zenodo.org/record/25802
Orthogonius ceylanicus Tian et Deuve, n. sp.
No full textOrthogonius ceylanicus Tian et Deuve, n. sp. Figs 6–8 Description. Length: 11.5 mm; width: 4.5 mm. Habitus as in Fig. 6. Head, pronotum, elytra, and underside of head dark brown, underside of thoraces, ventrites, legs, antennae and palps yellow; moderately shiny; head and pronotum faintly wrinkled, impunctate, elytra with dense and very small punctures. Head wide, HW/HL= 1.35. Pronotum much wider than long, PW/PL= 1.83, and base wider than front, PbW/ PfW= 1.44. Elytra much longer than combined wide, EL/EW= 1.45, nearly parallel-sided, widest at a little behind middle. Legs moderately slender, fore tibia slightly expanded in middle, inner angle nearly rectangular. Male genitalia (Figs 7–8): The median lobe of aedeagus stout and robust, strongly expanded medially on both dorsal and ventral aspects, but less so ventrally, almost 2 / 7 as thick as long, dorsal opening very long, nearly 2 / 3 as long as eadeagus; gradually constricted towards apex which is short and broad; apical lamella very short, much broader than that in O. baconii, almost as long as wide, broadly blunt at apex. Female: Unknown. Remarks. This new species is distinguished by the male genital structure, which is more or less intermediate between O. baconii and O. nepalensis. Materials examined. Holotype. ♂, labeled “ Ceylan ”, “C. E. Br.” and “Soc. Ent. Belg.”, from Sri Lanka, deposited in IRSNB. Etymology. Toponym, it refers to the type locality. Distribution. Sri Lanka.Published as part of Tian, Mingyi & Deuve, Thierry, 2016, A review of the baconii species group of the termitophilous genus Orthogonius Macleay (Coleoptera: Carabidae: Orthogoniini), pp. 118-126 in Zootaxa 4093 (1) on page 122, DOI: 10.11646/zootaxa.4093.1.7, http://zenodo.org/record/26068
Artimpaza brevilineata Tian & Chen, sp. nov.
No full textArtimpaza brevilineata Tian & Chen, sp. nov. (Figs 1–9) Description. Female: Head and prothorax pitchy black; antennal segments 1 to 5 pitchy black and remainder dull pitchy brown to slightly reddish; scutellum black; each elytron blackish green with a fairly broad median, semitransparent, longitudinal strip; posterior thorax and abdomen pitchy black; legs black, femora clavate. Body moderately clothed with long erect pale hairs; underside of basal six antennal segments with somewhat shorter darker setae (Figs 4–8); scutellum and parts of thoracic pleura and half of metaepisternum with dense silvery pubescence (Fig. 9). Head as wide as prothorax, moderately punctured and with one longitudinal groove extending onto frons (Fig. 2); gena nearly 1 / 2 as deep as lower eye-lobe. Antenna almost reaching to elytral apex; scape swollen preapically, moderately punctured (Fig. 3); segment 3 longer than scape + segment 2, and twice as long as segment 4; segment 4 as long as scape but shorter than segment 5; segment 11 as long as segment 10. Prothorax more than 1.5 times as long as wide, subcylindrical apically, somewhat constricted near base, feebly widened at side, widest just behind middle; disc with a slight swelling on each side near base, and with anterior portion largely smooth with sparse punctures. Each elytron about 7 times longer than wide, gradually narrowed behind humerus, disc fairly even, with very sparse punctures; elytra flattened above, narrowed and somewhat dehiscent posteriorly, each elytron spined at apex. Ventral surface with only a few punctures. Femora pedunculate, strongly clavate; hind femora extended to elytral apex; hind tarsal segment 1 distinctly longer than 2 + 3. Measurements. Holotype, female. Body length 11.1 mm; width 2.0 mm; paratype, female. Body length 12 mm; width 2.4 mm. Specimens examined. Holotype, female, China: Yunnan Province, Jinghong, 25 May 2010, coll. LI-CHAO TIAN. Paratype: 1 female, China: Yunnan Province, Lincang, 1 June 1980, coll. FEN LIU. The holotype and the paratype are housed in the collection of the College of Plant Protection, Southwest University, Chongqing, China (SWU). Remarks. Ordinarily, we would hesitate to describe a new species based on one sex. However, given the robust morphological difference within the same sex there can be no doubt that A. brevilineata is a distinct species. The new species is similar to A. curtelineata Pic, 1922, but differs mainly by each elytron being blackish green with a distinct median semitransparent strip. Etymology. The species is named for the semitransparent strip on each elytron.Published as part of Tian, Lichao, Chen, Li & Li, Zhu, 2012, Cerambycinae) from China, with a key to the Chinese species of the genus, pp. 42-44 in Zootaxa 3282 on page 43, DOI: 10.5281/zenodo.28086
Cybocephalus liui Tian, n. sp.
No full textCybocephalus liui Tian, n. sp. Holotype: ɗ, Tongbiguan Natural Reserve, Yingjiang County, West Yunnan, 2005 VI 23, Liu Jingxian leg. Paratypes: 1 ɗ 2 Ψ, same data as holotype. All type materials are deposited in the insect collection of South China Agricultural University, Guangzhou. Description Mediumsized, strongly shiny, surface punctured and setose, antennae with club (antennomeres 9–11) well defined and asymmetric; legs slender, fore tibiae with long setae along outer margins, males with metallic sheen on head and pronotum. Length (not including the bent head): 1.4–1.5 mm; width: 1.0 mm. Habiti as in Figs. 1 and 3. Elongate oval, strongly convex, with prothorax and head bent, head concealed dorsally. Body dark brown, antennae, palpi of mouthparts and legs yellow to yellowish brown. Male with head, including base of mandible and anterior median portion of prothorax, bluish metallic sheen. Female similar to male, but without metallic sheen. Head bent, convex, wider than long; frons distinctly protruding anteriorly, truncate at front margin, clypeus small, labrum concealed by clypeus; mandibles stout, sharp at apices, teeth developed, left mandible with a single tooth, right one with two; base of mandibles with several long setae; eyes large, somewhat elliptical, pointed in front but broadly rounded behind; in dorsal view the inner margins of eyes broadly arcuate interiorly while the outer ones slightly convex; apical joints of labial palpi subcylindrical, apical joints of maxillary palpi thick; genal corner pointed (Fig. 2); antennae rather slender, well defined, 11 segmented, club strong, asymmetrical; antennomere 3 much longer than others, almost twice as long as antenommere 4; antennomeres 4–7 subequal in length, each longer than antennomere 8; antennomeres 2 to 8 each with a pair of setae, scape asetose; antennomere 8 shortest, longer than width; club segments setose, apical margin of antennomere 11 nearly truncate (Fig. 4). Pronotum strongly transverse, two times wider than length, markedly convex, lateral margins broadly lobed; median portion of anterior margin slightly convex; whole posterior margin broadly convex. Elytra strongly convex, as long as combined width, lateral portions lobed and almost vertical, apical margins broadly rounded; suture line a little convex in lateral view. Scutellum rather large and wide. Legs slender, fore tibia with apex slightly dilated; inner margin slightly sinuate at midlength, outer margin almost straight, subapical margin obliquely truncate, outer angle broadly rounded, apical margin narrow and nearly straight; long setae arranged along the outer margin (Fig. 5). Male genitalia. Structure of male genitalia normal for Cybocephalus, the basal plate (Fig. 6) broadly flat, roundly but distinctly protruded at apex. Penis stout, pointed at apex (Figs. 7–8). Remarks This new taxon is allied to C. chinensis Yu, but is easily separated from the latter by its fore tibia with outer angle broadly rounded, not angulate; the basal plate a little narrower, more protruded at apex, and setose around margins.Published as part of Tian, Mingyi, 2006, Checklist of the genus Cybocephalus Erichson (Coleoptera: Cybocephalidae) of China, with description of a new species from Yunnan Province, pp. 61-68 in Zootaxa 1202 on pages 64-67, DOI: 10.5281/zenodo.17232
Chenotrechus Tian & Huang & Jia 2023, n. gen.
No full textChenotrechus n. gen. Type species: Chenotrechus parvulus n. sp. (Xiniuyan, Laibin, Guangxi) Generic characteristics. Small-sized for cave trechines; body short and less elongate, fore body shorter than elytra; surface glabrous, but head with a few sparse setae on genae. Head elongated quadrate, sub-parallel-sided; neck short, constriction well-marked; presence of two pairs of supraorbital setiferous pores; frontal furrows well-marked but incomplete, sub-parallel-sided medially, slightly and moderately divergent forwardly and posteriorly respectively; frons slightly, and vertex strongly convex; clypeus quadrisetose, labrum widely emarginate at frontal margin; right mandibular tooth tridentate; mentum and submentum partially fused due to labial suture invisible medially; mentum bisetose, base largely concave; tooth short and blunt, unifid at apex; submentum with a row of 7 setae; 2 nd labial palp bisetose on inner margin; antennae thin and long, extending to apical margins of elytra. Prothorax moderately tumid, propleura visible from above; pronotum subquadrate, shorter than head excluding mandibles, lateral margins evidently bisinuate before hind angles; presence of two pairs of latero-marginal setae; disc moderately convex, base narrower than front. Elytra elongated ovate, apex much wider than base, widest at about apical 1/3; humeral angles completely rounded off; lateral margins ciliate throughout; disc strongly convex, striae obsolete and not traceable; apical striole absent; presence of two dorsal and a preapical pores; only 2 nd marginal umbilicate pore near marginal gutter; humeral set not aggregated, median set close to each other. Protarsomeres not modified in male; tibiae not sulcate longitudinally. Male genitalia weakly-sclerotized, short and moderately elongated, hardly arcuate medially; base quite large, with a rather small sagittal aileron which is almost translucent, apical lobe straight, broadly blunt at apex, longer than wide in dorsal view; parameres moderately developed, much shorter than the median lobe. Remarks. Chenotrechus n. gen. is the first cave-adapted trechine lineage reported from central part of Guangxi Zhuang Autonomous Region. There is a wide geographical gap from other cave trechine beetles known in Guangxi, e.g., over 150 km from Du’an Karst, a kingdom of the genus Dongodytes Deuve, 1993 (where occur also Xuedytes Tian & Huang, 2017, Libotrechus Uéno, 1998 and Uenotrechus Deuve & Tian, 1999) (Tian et al. 2014, 2017, Lin & Tian 2014, Wei et al. 2017), and 180 km from the cave Chaotianyan in Pingle Karst, the locality of Oodinotrechus (Pingleotrechus) yinae Sun & Tian, 2015 (Sun & Tian 2015). Chenotrechus is not related to any of the abovementioned genera. The characteristics combined, such as: fore body distinctly shorter than elytra, incomplete frontal furrows, small and short prothorax with tumid propleura, elytra widened posteriorly, nonaggregated humeral group of the marginal umbilicate pores which are distant from marginal gutter, vanished striae and apical striole, and protarsomeres not modified in male indicate for Chenotrechus a peculiar position among Chinese cave trechine fauna. Etymology. “Chen” + “ Trechus ”. Dedicated to the late Prof. Shoujian Chen (SCAU), one of the pioneers of Carabidology in China. Range. China (Guangxi) (Figure 1k).Published as part of Tian, Mingyi, Huang, Sunbin & Jia, Xinyang, 2023, A contribution to cavernicolous beetle diversity of South China Karst: eight new genera and fourteen new species (Coleoptera: Carabidae: Trechini), pp. 1-66 in Zootaxa 5243 (1) on page 15, DOI: 10.11646/zootaxa.5243.1.1, http://zenodo.org/record/764240
Orthogonius rogueti Tian et Deuve, n. sp.
No full textOrthogonius rogueti Tian et Deuve, n. sp. Figs 1 –2, 9– 12 Description. Length: 11.0 mm in male, 12.0 mm in female; width: 4.7 mm in male, 5.2 mm in female. Habitus as in Figs 9–10. Head, pronotum, elytra, and underside of head dark brown, underside of thoraces, ventrites, legs, antennae and palps yellow, mandibles and lateral expanded margins of pronotum light dark brown; moderately shiny in both male and female; head obscurely striated, with sparsely punctate on base of head, and disc of pronotum, coarsely punctate near basal foveae and along lateral expanded margins at base, elytra with dense and small punctures. Head wide, HW/HL= 1.14, eyes almost same convex in male and female. Pronotum almost twice as wide as long, PW/PL= 1.88, PbW/PfW= 1.33; widest at a little behind middle. Elytra widest at about middle, EL/EW= 1.50, slightly expanded at both sides, not parallel-sided. Fore tibia with more slender but outer angle less developed in male than in female (Figs 1–2); 1 st hind tarsomere distinctly loner than 5 th. Male genitalia (Figs 11–12): The median lobe of aedeagus very short, stout and robust, extremely expanded medially on both dorsal and ventral aspects, almost 1 / 3 as thick as long, dorsal opening long, nearly 2 / 3 as long as aedeagus; apex broadly blunt; apical lamella short and broad, almost as long as wide, gently constricted towards apical tip. Remarks. This new species is easily separated from other congeners by its robust and strikingly expanded aedeagus, and its broader and wider apical lamella. Materials examined. Holotype. ♂, labeled “ India: Tamil Nadu, Viluppuran Dt.: Thely, 25 / 26.VII. 2010, aux UV, Roguet D.”, in MNHN; Paratype, 1 ♀, labeled “ India: Tamil Nadu, Viluppuran Dt.: Thely, 2.VII. 2007, aux lumieres, Roguet D.”, in Coll. D. Roguet. Etymology. Patronym, it is dedicated to Mr. D. Roguet, collector of the type specimens. Distribution. Southern India.Published as part of Tian, Mingyi & Deuve, Thierry, 2016, A review of the baconii species group of the termitophilous genus Orthogonius Macleay (Coleoptera: Carabidae: Orthogoniini), pp. 118-126 in Zootaxa 4093 (1) on page 125, DOI: 10.11646/zootaxa.4093.1.7, http://zenodo.org/record/26068
Investigation of code reconfigurable fibre Bragg gratings for Optical Code Division Multiple Access (OCDMA) and Optical Packet Switching (OPS) Networks
No full textThis thesis documents my work in the telecommunication system laboratory at the Optoelectronics Research Centre, towards the implementation of code reconfigurable OCDMA and all-optical packet switching nodes based on fibre Bragg grating (FBG) technology. My research work involves characterizing the performance of various gratings, specifically high reflectivity, short chip duration, long code sequences, multiple phase level and tunable superstructured fiber Bragg gratings (SSFBGs), by using the recently proposed Frequency-Resolved Optical Gating technique based on Electro-Absorption Modulator (EAM-FROG). This technology can obtain the complex code profile along the grating, making it a powerful method to understand the thermally-induced code-reconfigurable grating. Efforts have been made to improve the grating design to achieve better system performance. Three different types of FBGs optical encoder/decoder, e.g. conventional discrete phaseshift SSFBGs, code-reconfigurable gratings, and novel continuous phase-shift SSFBGs, have been investigated comparatively, as well as their performance in various optical coding/decoding systems. This thesis also discusses the possibility of reducing multiple access interference (MAI) using a Two-Photon Absorption (TPA) process. The advanced grating devices enable the improvement of system performance. A dynamically reconfigurable optical packet processing system and a 16-channel reconfigurable OCDMA/DWDM system with 50GHz DWDM intervals has been demonstrated.These results highlight the feasibility of FBG-based optical coding/decoding techniques, with improved system flexibility and sustainability
Actenoncus punctatus Tian and Deuve
No full textActenoncus punctatus Tian and Deuve (Figs. 3, 6 and 9) Actenoncus punctatus Tian and Deuve, 2006 b: 152 Diagnosis. Rather small, light dark brown, right mandible without median tooth, labrum emarginated at frontal margin, head and pronotum coarsely punctate, elytral striae shallow, punctures large and isolated; abdominal ventrite VII deeply emarginated at apical margin in male, aedeagus more slender. Length: 13.5 mm; width: 5.5 mm. Body light dark brown. Habitus as in Fig. 3. Surface very shiny, head and pronotum with sparse and small punctures, elytra glabrous. Microsculptural meshes densely isodiametric. Head as long as wide; eyes large, extraordinary prominent, neck constricted, labrum slightly emarginated at frontal margin, frontal impressions deep and short, not extending the level of fore margins of eyes; clypeus bisetose, base slightly raised; mandibles strong, right mandible without median tooth; palpi similar to those of above species; ligula narrow, bisetose at apex; mentum without median tooth, asetose, submentum with a pair of setae; palpiger unisetose; antennae similar to those of A. wallacei, but extending to basal one-fourth of elytra. Pronotum similar to that of above species (PW/PL= 1.6), but lateral expanded margins wider, basal margin slightly produced backwards in median portion. Elytra elongate ovate, EL/EW= 1.5, convex; base unbordered, widest a little behind middle, paralleled at sides; apex broadly truncate, inner angle nearly rectangular, pointed; elytral striae shallow, strial punctures large, well-marked and isolated; intervals flat, equal in width at middle, without puncture and setiferous pore, except a row of tiny punctures at basal part of interval 8. Prosternal process unbordered at apex. Hind tarsomere 4 slightly emarginated at apex. Abdominal ventrite VII slightly emarginated at apical margin in male (Fig. 6). Male genitalia. The median lobe of aedeagus slender and elongate, slightly expanded in median portion, the apical lamella slightly longer than wide, rounded at apex (Fig. 9). Female. Unknown. Distribution. Indonesia and Malaysia, occurring in the islands of Borneo and Sumatra. Materials examined. 1 male, the holotype, “Borneo Occ. Pontainak, 1899 ”, from west Borneo, Indonesia (MNHN); 1 male, a paratype, “Borneo, 3412 ”, “Bowring, 63.47 ” and “ Actenoncus sp. n. ”(NHML); 1 male, a paratype, “Sumatra, 1979, E. W. Diehl”, “Sinder Raya, 14. X., 40 km, W. Dolok M.”, in (NHMB); 1 male, “ Malaysia: Sabah Mt., Kinabalu Park, Poring Hot, Springs, 15–30. 12. 1995 ”, and “Coll. Natur. Museum Stuttgart, W. Schawaller” (NHMS).Published as part of Tian, Ming-Yi & Deuve, Thierry, 2009, A review of the genus Actenoncus Chaudoir (Coleoptera: Caraboidea: Orthogoniini), pp. 57-64 in Zootaxa 2135 on pages 62-63, DOI: 10.5281/zenodo.18848
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