175,321 research outputs found
Parisoperla oncocauda Huo & Du 2020, comb. nov.
No full textParisoperla oncocauda (Huo & Du, 2018), comb. nov. Isoperla oncocauda Huo & Du, 2018. Type locality: Tianmu Mountain, Zhejiang Province. Distribution: China (Zhejiang). Mature nymph: Body length c.a. 16 mm. Gills absent. Body covered with dark hair. Maculation of head and thorax typical of other Isoperlinae; M line and ecdysial line obvious. Mouthpart as shown in Fig. 3. Ventral tibial fringe absent. Wing pads subtriangular. Abdomen with a longitudinal pale band; paraprocts short; cerci long with setal fringe (Fig. 2). Material examined: 1 nymph, China, Zhejiang Province, Lin’an City, Tianmu Mountain Nature Reserve, Wuliting, 861m, 30°20.228′N, 119°26.136′E, 2018-IV-22, leg. Gao Peng. The same locality and data as holotype and paratypes of this species (ICYZU). Remarks: Only a single nymph available of the new genus from Tianmu Mountain was available for study. In the new genus, the Y-arms of the mesosternum and mandibles appear to be most similar to nymphs of Calliperla and Isoperla (Szczytko & Stewart 1984, Stewart & Stark 1993). The lacinia of P. oncocauda is similar to C. luctuosa (Banks, 1906) with the apex curved and inner margin straight (Szczytko & Stewart 1984), but the inner lacinial setal row of P. oncocauda is only present on the anterior apex angle, not reaching the base and sparser than C. luctuosa (about 8 thick setae and 20 fine hairs). No additional seta or setal patches occur on the surface of the lacinia.Published as part of Huo, Qing-Bo & Du, Yu-Zhou, 2020, A new genus and two new species of stoneflies (Plecoptera: Perlodidae) from Guizhou Province, China, pp. 470-480 in Zootaxa 4718 (4) on page 471, DOI: 10.11646/zootaxa.4718.4.2, http://zenodo.org/record/360263
A discussion of morphological differences within Claassenia qingzanga Xiang, Huo & Du, 2022 (Plecoptera: Perlidae) based on molecular data and a redescription of C. magna Wu, 1948
No full textXiang, Ya-Nan, Huo, Qing-Bo, Du, Yu-Zhou (2022): A discussion of morphological differences within Claassenia qingzanga Xiang, Huo & Du, 2022 (Plecoptera: Perlidae) based on molecular data and a redescription of C. magna Wu, 1948. Zootaxa 5141 (3): 287-294, DOI: 10.11646/zootaxa.5141.3.
Cryptoperla nangongshana Huo & Du 2018, sp. nov.
No full textCryptoperla nangongshana Huo & Du, sp. nov. Figs. 6–10. Male: Forewing length approximately 15.0 mm. Head black brown; biocellate, ocelli large, closer to the ommateum than to each other. Pronotum rectangular with rounded corners, wider than long; rugosities present (Fig. 6). Thorax yellowish ventrally. Legs dark brown; wings brownish and translucent; veins dark brown. Abdomen brown, laterally darker. Mid-posterior margin of T10 extended backwards to a cuspidal apex (Fig. 7). S9 produced into a well-developed subgenital plate, tip truncated; median anterior margin with a small semicircular lobe, two divergent arc lines extend from base of the lobe to the posterior margin, forming one median and two lateral areas (Fig. 8). Epiproct and paraprocts undeveloped. Basal cercal segment dark brown, long and stout. Inner margins of cercal segment 1–6 bearing several clusters of long and thick, anteriorly angled bristles (Fig. 9). Aedeagus divided into 4 lobes, the two internal lobes armed with thick setae on apex; ventrally with a pair of spherical bumps and a line of simple basal setae (Fig. 10). Female: Unknown. Nymph: Unknown. Type material: Holotype: Ƌ, China, Shaanxi Province, Ankang City, Nangongshan, 2014-V-4, leg. Chen Zhi- Teng, Du Yu-Zhou, Wang Ji-Rui. Paratypes: 3 ♂♂, same locality and data as holotype. Diagnosis: Cryptoperla nangongshana appears to be most similar to C. kumari Stark, 1989, a species described from Assam State of northeastern India. However, the cercal bristles of C. kumari extend only to cercal segments 2–3 and are not angled forward. Etymology: The species name refers to its type locality, Nangongshan. Distribution: Shaanxi Province (Nangongshan), China.Published as part of Huo, Qing-Bo & Du, Yu-Zhou, 2018, Two new species of Cryptoperla (Plecoptera: Peltoperlidae) from China, with description of the nymph of Cryptoperla dui Sivec, pp. 395-408 in Zootaxa 4374 (3) on page 399, DOI: 10.11646/zootaxa.4374.3.4, http://zenodo.org/record/115539
FIGURE 6 in A discussion of morphological differences within Claassenia qingzanga Xiang, Huo & Du, 2022 (Plecoptera: Perlidae) based on molecular data and a redescription of C. magna Wu, 1948
No full textFIGURE 6. Claassenia magna Wu, 1948. A. Female head and pronotum, dorsal view; B. Female terminalia, dorsal view; C. Female terminalia, ventral view.Published as part of Xiang, Ya-Nan, Huo, Qing-Bo & Du, Yu-Zhou, 2022, A discussion of morphological differences within Claassenia qingzanga Xiang, Huo & Du, 2022 (Plecoptera: Perlidae) based on molecular data and a redescription of C. magna Wu, 1948, pp. 287-294 in Zootaxa 5141 (3) on page 291, DOI: 10.11646/zootaxa.5141.3.6, http://zenodo.org/record/659280
Biema Huo & Zhao gen. nov., a new flower fly genus (Diptera, Syrphidae) from China
No full textA new flower fly genus (Diptera, Syrphidae), Biema Huo & Zhao gen. nov. from China is described based on two new species: Biema wanglangensis Huo & Zhao gen. et sp. nov. (designated as type-species) and Biema qilianensis Huo & Liu gen. et sp. nov. The new genus can easily be distinguished by the following morphological features: head, mesonotum and scutellum black; postpronotum without pile; metasternum not reduced, posterior margin shallowly concave; katepisternum only with ventral pile patches; alula narrow, as wide as basal width of cell c; male postabdomen conspicuously more swollen than other segments, surstylus and postgonite complex, phallus unsegmented. The results of our Bayesian inference and Maximum Likelihood analysis based on sequences of the Cytochrome c oxidase subunit I (COI) gene, as well as the species delimitation tests, support the separation of Biema Huo & Zhao gen. nov. from its related taxa. Additionally, an identification key to the genera of the tribes Bacchini and Melanostomini occurring in China is provided
Parisoperla Huo & Du 2020, gen. nov.
No full textParisoperla Huo & Du, gen. nov. Diagnosis: Small size, body length 10~ 15 mm; macropterous, wing length 10~ 15 mm, general color dark brown; triocellus, area between posterior ocelli to compound eyes yellow brown. Pronotum width twice its length, darkcolored medially with rugosities, with a smooth longitudinal band present among the centerline. Terga 9–10 of male heavily sclerotized posteriorly, posteromedial margin of tergum 10 undivided, with a developed sclerotized process (Fig. 1 A–B) with wide lateral grooves on surface. Vesicle on sternum 8 reduced. Aedeagus membranous, short columnar, without any sclerites but covered ventrally by patches of fine spines. Female coloration similar to male, posterior margin of tergum 10 usually sclerotized and extending as a process like the male (Fig. 1 C–D). Subgenital plate rounded or short triangle, often with a median notch apically. Type species: Parisoperla oncocauda (Huo & Du, 2018). Etymology: This name indicates “ Para -” and “ Isoperla ”, means that “similar to Isoperla ”. Remarks: We previously treated P. oncocauda as a species of Isoperla Banks, 1906 based on the wing venation (Banks 1906) and aedeagal morphology (Sandberg & Kondratieff 2013, Szczytko & Kondratieff 2015). The wing venation and the paraprocts of Parisoperla are most similar to Isoperla, indicating a placement in the subfamily Isoperlinae. Within the Isoperlinae, several genera such as Calliperla Banks, 1948, Cascadoperla Szczytko & Stewart, 1979, Clioperla Needham & Claassen, 1925, Cosumnoperla Szczytko & Bottorff, 1987, Kaszabia Raušer, 1968 and Mesoperlina Klapálek, 1921 are also similar to the new genus. However, the male tergum 10 of Clioperla and Mesoperlina is cleft. The male of Kaszabia can be distinguished by a pair of tergal processes of the abdomen (although these processes are not a unique character of this subfamily, present also I. distincta Nelson, 1976 a Nearctic species of Isoperla) (Teslenko & Zhiltzova 2009, Judson & Nelson 2012, Szczytko & Kondratieff 2015); The monotypic Calliperla from western North America has the male tergum 10 short and broad, crescent-shaped, with a terminal process as well, but the process curving forward and upward, just as similar as Cosumnoperla. The aedeagus of Calliperla and Cosumnoperla are more complex in structure than the new genus (Bottorff 2007, Szczytko & Stewart 1984). Discussion: Geographically, the 15 known Chinese Isoperla species are mainly distributed in Palaearctic Region of China. Whereas Parisoperla is apparently restricted to Guizhou and Zhejiang provinces, which are considered the northern portion of the Oriental Region (Ma 1959, Zhang 2011). Therefore, we speculate that the genus may be an Oriental group of stoneflies.Published as part of Huo, Qing-Bo & Du, Yu-Zhou, 2020, A new genus and two new species of stoneflies (Plecoptera: Perlodidae) from Guizhou Province, China, pp. 470-480 in Zootaxa 4718 (4) on page 471, DOI: 10.11646/zootaxa.4718.4.2, http://zenodo.org/record/360263
FIGURE 2 in A discussion of morphological differences within Claassenia qingzanga Xiang, Huo & Du, 2022 (Plecoptera: Perlidae) based on molecular data and a redescription of C. magna Wu, 1948
No full textFIGURE 2. Claassenia magna Wu, 1948. Male head and pronotum, dorsal view.Published as part of Xiang, Ya-Nan, Huo, Qing-Bo & Du, Yu-Zhou, 2022, A discussion of morphological differences within Claassenia qingzanga Xiang, Huo & Du, 2022 (Plecoptera: Perlidae) based on molecular data and a redescription of C. magna Wu, 1948, pp. 287-294 in Zootaxa 5141 (3) on page 289, DOI: 10.11646/zootaxa.5141.3.6, http://zenodo.org/record/659280
FIGURE 4 in A discussion of morphological differences within Claassenia qingzanga Xiang, Huo & Du, 2022 (Plecoptera: Perlidae) based on molecular data and a redescription of C. magna Wu, 1948
No full textFIGURE 4. Claassenia magna Wu, 1948. A. Aedeagus, dorsal view; B. Aedeagus, ventral view.Published as part of Xiang, Ya-Nan, Huo, Qing-Bo & Du, Yu-Zhou, 2022, A discussion of morphological differences within Claassenia qingzanga Xiang, Huo & Du, 2022 (Plecoptera: Perlidae) based on molecular data and a redescription of C. magna Wu, 1948, pp. 287-294 in Zootaxa 5141 (3) on page 290, DOI: 10.11646/zootaxa.5141.3.6, http://zenodo.org/record/659280
Inter-layer FEC aided unequal error protection for multi-layer video transmission in mobile TV
No full textLayered video coding creates multiple layers of unequal importance, which enables us to progressively refine the reconstructed video quality. When the base layer (BL) is corrupted or lost during transmission, the enhancement layers (ELs) must be dropped, regardless whether they are perfectly decoded or not, which implies that the transmission power assigned to the ELs is wasted. In this treatise, we propose an interlayer forward error correction (FEC) coded video transmission scheme for mobile TV. At the transmitter, the proposed interlayer (IL) coding technique implants the systematic information of the BL into the ELs by using exclusive-OR operations. At the receiver, the implanted bits of the ELs may be utilized for assisting in decoding the BL. Furthermore, the data partition mode of H.264 video coding is utilized as the source encoder, where the type B and type C partitions will assist in protecting the type A partition. The IL coded bitstream will then be modulated and transmitted over a multi-functional multiple-input multiple output (MF-MIMO) scheme for the sake of improving the system’s performance in mobile environments. The proposed system may be readily combined with the traditional unequal error protection (UEP) technique, where extrinsic mutual information (MI) measurements are used for characterizing the performance of our proposed technique. Finally, our simulation results show that the proposed system model outperforms the traditional UEP aided system by about 2.5 dB of Eb/N0 or 3.4 dB of peak signal-to-noise ratio (PSNR) at the cost of 21% complexity increase, when employing a recursive systematic convolutional code. Furthermore, unlike the traditional UEP strategies, where typically stronger FEC-protection is assigned to the more important layer, employing our proposed IL coding technique requires weaker FEC to the more important layer. For example, the system relying on channel coding rates of 0.85, 0.44 and 0.44 for the type A, type B and type C H.264 video partitions, respectively, achieves the best system performance when employing a recursive systematic convolutional (RSC) code
Figure 1 from: Huo L, Li W, Wang X (2017) Pseudaspidimerus palatus, a new species of the genus Pseudaspidimerus Kapur, 1948 from the Malay Peninsula (Coleoptera, Coccinellidae). ZooKeys 706: 109-115. https://doi.org/10.3897/zookeys.706.18081
No full textFigure 1 -
Pseudaspidimerus palatus Huo & Wang sp. n. a dorsal view b frontal view c lateral view d female abdomen e male abdomen f female genitalia g penis h lateral view of tegmen i ventral view of tegmen
- …
