A review of Deuterixys Mason from China, with description of three new species (Hymenoptera, Braconidae, Microgastrinae)

Zheng, Minlin, Song, Dongbao (2020): A review of Deuterixys Mason from China, with description of three new species (Hymenoptera, Braconidae, Microgastrinae). Zootaxa 4728 (4): 489-497, DOI: https://doi.org/10.11646/zootaxa.4728.4.

Deuterixys jilinensis Zheng & Song 2020, sp. nov.

<i>Deuterixys jilinensis</i> Zheng & Song, sp. nov. <p>Figure 1 (A–H)</p> <p>Type material. Holotype: ♀, Tonghua, Mt. Changbaishan, Jilin, 1989.viii.4, Yang Jianquan. Paratype: 2♀♀, same data as holotype; 2♀♀, Tonghua, Mt. Changbaishan, Jilin, 1989.viii.4, Zhou Xiaohua; 1♀, Jian, Mt. Changbaishan, Jilin, 1989.viii.5, Zhou Xiaohua. 1♂, Tonghua, Mt. Changbaishan, Jilin, 1989.viii.4, Zhou Xiaohua; 1♂, Donggang, Mt. Changbaishan, Jilin, 1989.vii.26, Zhou Xiaohua.</p> <p>Description. Female. Body length 1.8–2.0 mm, fore wing length 2.0– 2.2 mm.</p> <p>Head. Transverse in dorsal view, 2.0 × as wide as long and 1.1 × as that of mesoscutum. Ocelli small in a high triangle, imaginary tangent of posterior margin of anterior ocellus distant from posterior ocelli, POL: OD: OOL= 7: 3: 8. Frons and vertex shiny, scattered with sparsely small punctate and fine setae; vertex narrowed behind eyes, area behind ocellar area smooth and shiny, without setae; temple and gena weakly punctate and shiny, with dense setae; occiput deep concave. Orbicular-ovate in anterior view, with antennal sockets high above middle level of eyes; face slightly convex, finely punctulate associated with long pilosity; inner margin of eyes moderately constricted downward; eyes pilose. Antenna longer than body (5: 4); flagellomeres thin, with bristly setosity, most flagellomeres with placodes arranged regularly in 2 ranks except for last 5 or 6 flagellomeres. Flagellomere proportion: 2 L/W = 2.9, 8 L/W = 2.4, 14 L/W = 1.4. L 2/14 = 2.1, W 2/14 = 1.2. F12-15 tightly connected.</p> <p>Mesosoma. Mesoscutum with spherical bulge and densely and evenly punctate and setose; notauli hardly impressed. Disc of scutellum densely punctate, covered with dense setae; scutellar sulcus deep with a few carinae. Propodeum highly polished, bearing a high, narrow, median carina and a pair of weaker longitudinal carinae running forward from the apical corners.</p> <p>Wings. Fore wing without areolet, vein r almost vertically emitted from middle of pterostigma; r and 2-SR meeting at a 155~160° angle; 2-SR: r: width of pterostigma = 9: 8: 9; vein 1-R1 1.33–1.4 × as long as pterostigma and 4.5 × distance from the apex of 1-R1 to apex of marginal cell, pterostigma 2.3 × as long as wide. 1-CU1: 2-CU1: m-cu= 9: 11: 9. Hind wing narrow, vein cu-a incurved.</p> <p>Legs. Hind coxa small, slightly longer than T1, shiny, scattered with short setae. Hind tibia 0.93–0.97 × as long as hind tarsus; inner hind tibial spurs almost as long as outer one, about 0.4 × as long as hind basitarsus.</p> <p>Metasoma. T1 2.3–2.5 × as long as wide, almost parallel on both sides but weakly constricted at middle and apical, basal half bearing a medial longitudinal groove, apical half arch, with a small smooth bump at middle apex. T2 + T3 broad, rectangular and obviously wider than T1 (8: 5), slightly constricted before the suture between T2 + T3, T2 0.6 × as long as its basal width and 1.4 × as long as T3 (13: 9), the median field of T2 not obvious. T2 + T3 and most T1 almost completely covered with finely-textured and dense aciculo-rimulose sculpture. Tergites posterior to T3 more membranous, shiny. All tergites with sparsely scattered setae. Ovipositor short and bending downward, ovipositor sheath 0.4 × as long as hind basitarsus, hairy only on the apical half. Hypopygium short, strongly and evenly sclerotized.</p> <p>Colour. Body mostly blackish. Seta on mesoscutum and disc of scutellum golden yellow. Antenna brown; maxillary palp, labial palp and legs yellow, except hind coxa yellowish-brown, apical half of hind tibia and most of hind tarsus light reddish-brown, apical metasoma brown, basal metasoma light yellow (except for tergites). Pterostigma brown or yellowish-brown and semitransparent.</p> <p>Male. Body mostly fusco-testaceous, and the colour of rest of body deeper than that of female.</p> <p>Host. Unknown.</p> <p>Etymology. The species name is derived from the collecting place: Jilin province of China.</p> <p>Distribution. China (Jilin).</p> <p> Remarks. This species is similar to <i>D. shennongensis</i>, sp. nov. by body colour mostly blackish (vs. body colour mostly fusco-testaceous); fore wing with vein 1-R1 4.5 × distance from the apex of 1-R1 to apex of marginal cell (vs. fore wing with vein 1-R1 5.1 × distance from the apex of 1-R1 to apex of marginal cell); inner hind tibial spurs almost as long as outer one, about 0.4 × as long as hind basitarsus (vs. inner hind tibial spurs almost as long as outer one, about 0.3 × as long as hind basitarsus).</p>Published as part of <i>Zheng, Minlin & Song, Dongbao, 2020, A review of Deuterixys Mason from China, with description of three new species (Hymenoptera, Braconidae, Microgastrinae), pp. 489-497 in Zootaxa 4728 (4)</i> on pages 490-492, DOI: 10.11646/zootaxa.4728.4.8, <a href="http://zenodo.org/record/3626644">http://zenodo.org/record/3626644</a&gt

First report of the genus Coeliniaspis Fischer (Hymenoptera, Braconidae, Alysiinae) from China and Russia

Volume: 57Start Page: 135End Page: 14

Elasmosoma (Sinoneoneurus) obscuripennis Li & Achterberg & Zheng & Chen 2020, comb. nov.

Elasmosoma (Sinoneoneurus) obscuripennis (He, Chen & van Achterberg, 1997), comb. nov. Sinoneoneurus obscuripennis He, Chen & van Achterberg, 1997: 71; He et al., 2000: 328. Biology. Unknown. Distribution. East Palaearctic Region: China.Published as part of Li, Jun, Achterberg, Cornelis van, Zheng, Minlin & Chen, Jiahua, 2020, Review of Neoneurini Bengtsson (Hymenoptera: Braconidae: Euphorinae) from China, pp. 281-289 in Zoological Systematics 45 (4) on pages 286-288, DOI: 10.11865/zs.202034, http://zenodo.org/record/461796

Elasmosoma Ruthe 1858

<i>Elasmosoma</i> Ruthe, 1858 <p> <i>Elasmosoma</i> Ruthe, 1858: 7. Type species: <i>Elasmosoma berolinense</i> Ruthe, 1858.</p> <p> <i>Sinoneoneurus</i> He, Chen & van Achterberg 1997: 70. <b>Syn. nov.</b> Type species: <i>Sinoneoneurus obscuripennis</i> He, Chen & van Achterberg [= <i>Elasmosoma obscuripennis</i> (He, Chen & van Achterberg, 1997) <b>comb. nov.</b>].</p> <p>General description. Antenna of ♀ with 13 antennomeres (of ♂ with 14 antennomeres and somewhat longer), shorter than head and mesosoma combined. Head large and transverse. Maxillary palp with 2–3 segments, labial palp with 1–2 segments. Hind tibial spur acute apically. Hind wing without closed cell.</p> <p> Biology. Attacks adult ant workers, for details see Gómez Durán and van Achterberg (2011). The known hosts are <i>Camponotus castaneus</i>, <i>C. vagus</i>, <i>F. fusca</i>, <i>F. integra</i>, <i>F. obscuripes</i>, <i>F. obscuriventris clivia</i>, <i>F. pratensis</i>, <i>F. rubicunda</i>, <i>F. rufa</i>, <i>F. rufa japonica</i>, <i>F. rufibarbis</i>, <i>F. sanguinea</i>, <i>F. schaufuss</i>, <i>F. subpolita</i>, <i>F. subsericea</i>, <i>Lasius niger</i>, and <i>Polyergus lucidus</i> (Yu <i>et al.</i>, 2016).</p> <p>Distribution. Palaearctic, Nearctic and Oriental Regions.</p> <p> Remarks. The type species of <i>Sinoneoneurus</i> was recently re-examined by C. van Achterberg. The differences between <i>Sinoneoneurus</i> and <i>Elasmosoma</i> as indicated in the key are few, therefore, we include <i>Sinoneoneurus</i> as a subgenus of <i>Elasmosoma</i>.</p>Published as part of <i>Li, Jun, Achterberg, Cornelis van, Zheng, Minlin & Chen, Jiahua, 2020, Review of Neoneurini Bengtsson (Hymenoptera: Braconidae: Euphorinae) from China, pp. 281-289 in Zoological Systematics 45 (4)</i> on page 285, DOI: 10.11865/zs.202034, <a href="http://zenodo.org/record/4617968">http://zenodo.org/record/4617968</a&gt

A new species of Myiocephalus Marshall (Hymenoptera, Braconidae, Euphorinae) from China

Volume: 933Start Page: 95-10

Neoneurini Bengtsson 1918

Neoneurini Bengtsson, 1918 Neoneurinae Bengtsson, 1918: 27. Elasmosomini Viereck, 1918: 69. General description. Maxillary palp with 2–3 segments, labial palp with 1–2 segments. Eyes bare. First metasomal tergite sessile. Ovipositor short, bent, variable in broadness. Fore legs always modified, tarsal claws slender. Wing venation largely reduced, with widened costa, and truncate marginal cell of fore wing. Fore wing vein r present (Stigenberg et al., 2015) Distribution. Palaearctic, Nearctic, Oriental Regions. Key to Chinese species of tribe Neoneurini. 1. Antenna longer than head and mesosoma combined (Fig. 1); marginal cell of fore wing well defined and with a pigmented cross-vein (Fig. 8); hind wing with closed cell (Fig. 8); Heilongjiang; (genus Neoneurus Haliday ) ................... N. clypeatus (Foerster, 1863) Antenna shorter than head and mesosoma combined (Figs 10–11); marginal cell of fore wing only indicated, not closed by a fully pigmented vein (Fig. 18); hind wing without closed cell (Fig. 18); (genus Elasmosoma Ruthe ).......................................................2 2. Malar space short, eyes almost touching base of mandible (Fig. 14); vein cu-a of fore wing approx. equal to vein 1-CU1 of fore wing (Fig. 18); (subgenus Elasmosoma ).....................................................................................................................................................3 Malar space medium-sized (fig. 1 in He et al., 1997); vein cu-a of fore wing distinctly longer than vein 1-CU1 of fore wing (Fig. 3, loc. cit.); (subgenus Sinoneoneurus )..................................................................................................................................................4 3. Hypopygium deeply notched posteriorly (fig. 5 in Chou, 1985); hind inner tibial spurs approx 0.8 × as long as basitarsus; Taiwan................................................................................................................................................................ E. (E.) taiwanense Chou, 1985 Hypopygium moderately notched posteriorly (Figs 20–21); hind inner tibial spurs nearly as long as basitarsus (Fig. 19); Heilongjiang....................................................................................................................................................... E. (E.) pergandei Ashmead, 1895 4. Wing membrane brownish and veins distinctly pigmented; clypeus and face similarly transversely aciculate; second and third metasomal tergites granulate-punctate; Qinghai..................................... E. (S.) obscuripennis (He, Chen & van Achterberg, 1997) Wing membrane subhyaline and veins largely unpigmented; clypeus smooth and face transversely aciculate; second and third metasomal tergites finely coriaceous; Ningxia.......................................... E. (S.) pallidipennis (He, Chen & van Achterberg, 1997)Published as part of Li, Jun, Achterberg, Cornelis van, Zheng, Minlin & Chen, Jiahua, 2020, Review of Neoneurini Bengtsson (Hymenoptera: Braconidae: Euphorinae) from China, pp. 281-289 in Zoological Systematics 45 (4) on page 282, DOI: 10.11865/zs.202034, http://zenodo.org/record/461796

Revision of Streblocera Westwood (Hymenoptera, Braconidae, Euphorinae) from China, with the description of seven new species

The Chinese fauna of the euphorine genus Streblocera Westwood, 1833 (Hymenoptera, Braconidae) is revised. Seven new species from China are described and illustrated: Streblocera (Eutanycerus) carinifera Li, Chen and van Achterberg, sp. nov., S. (E.) laterostriata Li, Chen and van Achterberg, sp. nov., S. (E.) uncifera Li, Chen and van Achterberg, sp. nov., S. (S.) interrupta Li, Chen and van Achterberg, sp. nov., S. (S.) stigenbergae Li, Chen and van Achterberg, sp. nov., S. (S.) trullifera Li, Chen and van Achterberg, sp. nov., and S. (S.) zoroi Li, Chen and van Achterberg, sp. nov. An identification key to the females of Streblocera from China is provided

A preparationmethodandeffectsofAl–CrcoatingonNdFeB sintered magnets

A 50 mm Al–CrcoatingonNdFeBsinteredmagnetswaspreparedthroughdippinginsolution, shaking dry andheatingat300 1C. ThemorphologyandcompositionoftheAl–Crcoatingwereinvestigated with scanningelectronmicroscope, energydispersivespectrometerandX-raydiffraction.Thecorrosion resistanceofNdFeBsinteredmagnetswithandwithouttheAl–Crcoatingwasanalyzedbynormalsaltspray,polarizationcurvesandelectrochemicalimpedancespectroscopy.Themagneticpropertieswere measuredwithahysteresislooptracer.TheresultsshowthattheAl–Crcoatingformsanoverlapping structureandAlflakeslienearlyparalleltothesubstrate, whichimprovestheanticorrosionand increasesnormalsaltspraytestfrom10to100h. ThecorrosionpotentialofNdFeBsinteredmagnets with andwithouttheAl–Crcoatingmovespositivelyfrom 0.67 to 0.48 V,whichisinaccordance with NyquistandBodeplots.TheAl–Crcoatinghaslittleinfluenceonthemagneticpropertiesofthe NdFeB sinteredmagnets

Elasmosoma (Elasmosoma) taiwanense Chou 1985

<i>Elasmosoma</i> (<i>Elasmosoma</i>) <i>taiwanense</i> Chou, 1985 <p> <i>Elasmosoma taiwanense</i> Chou, 1985: 477; He <i>et al.</i>, 2000: 327.</p> <p>Biology. Unknown.</p> <p>Distribution. Oriental Region: China.</p>Published as part of <i>Li, Jun, Achterberg, Cornelis van, Zheng, Minlin & Chen, Jiahua, 2020, Review of Neoneurini Bengtsson (Hymenoptera: Braconidae: Euphorinae) from China, pp. 281-289 in Zoological Systematics 45 (4)</i> on page 286, DOI: 10.11865/zs.202034, <a href="http://zenodo.org/record/4617968">http://zenodo.org/record/4617968</a&gt