Discoelius emeishanensus
| Notice: | This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale):
Citation formats to copy and paste
BibTeX: @article{Zhou2013JournalofHymenopteraResearch32, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Zhou2013Journal of Hymenoptera Research32">{{Citation See also the citation download page at the journal. |
Ordo: Hymenoptera
Familia: Vespidae
Genus: Discoelius
Name
Discoelius emeishanensus Zhou & Li sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Material examined
Holotype, ♀: China, Sichuan Prov., Leshan City, Emeishan Country, Gaoqiao Town, Yanshi Village, 29°30'14"N, 103°25'35"E, 551 m, 11. VIII. 2011, Tingjing Li (CQNU).Paratype: 1♂, the same as holotype (CQNU).
Description
Female body length 15.0 mm, forewing length 12.0 mm. Black; with the following parts yellow or orange yellow: a marking on mandibular base, apex of clypeus, a small spot just above antennal socket (Figs 6, 7), a line on the anterior face of fore tibia, narrow apical bands on terga 1–2 (Figs 5, 10); anterior face of antennal scape with a deep brownish line.
Head: In frontal view, head subcircular; punctures mostly dense and coarse; mandible stout, not long, its apex sharply pointed and slightly curved inward, inner margin with four wide teeth, outer surface with four longitudinal carinae; clypeus wider than long, with short white setae and irregular strong punctures (somewhat reticulate), its apical margin truncate (Fig. 6), in profile, not concave; frons weakly concave in the middle, one strong vertical carina just above the clypeus and the carina distinct in the upper about one-half of clypeus (Fig. 6); scape of antenna somewhat shining, densely covered with minute punctures, flagellum not shining and with microscopic punctures, antennal article 3 longer than article 4, articles 4-10 wider than long and apical width about 1.2 times basal width, respectively; in profile, gena very wide, gradually narrowing towards the base of mandible and the narrowest near the base of mandible.
Mesosoma: From above, length of mesosoma about 2 times its width, and the whole mesosoma with white short appressed pubescenses and coarse punctures; pronotum with one continuous ridge extending laterally to fore coxa; one weak carina between the notaulices; scutellum and metanotum strongly punctate, with longitudinal, elongate wrinkles and without median furrow; propodeum shining, with lateral carina and sparsely short setae, dorsal and posterior faces rugosely striate to reticulate, lateral face shining, without punctures and setae; the setae on the mid tibia denser than the femur and the apical width about 2 times basal ones; the mid tarsal 1 dumpy and the hind tarsal 1 slender; the length of the mid tarsal 1:2:3:4 ≈ 4:1:1:1, and ≈ 20:4:2:1 in hind tarsus.
Metasoma: Length of metasomal segment 1 more than 2 times its apical width; tergum 1 with big and sparse punctures and white short setae, in profile, the anterior slope rather steep (Fig. 8); the length of tergum 2 about 1.1 times apical width, terga 2-3 apically with developed reflexed lamellae, respectively; the other terga without apical lamellae, with weaker and sparser punctures (Fig. 10); the apical margin of terminal metasoma triangle.
Male (Figs 7, 9). Differs from the female as follows: body length 12.0 mm, forewing length 8.0 mm; mandible with three teeth, of which the apical one very long and the yellow marking bigger, almost covering the wholly outer surface of mandible; clypeus almost wholly yellow (Fig. 7); the length of antennal flagellum 1 about 1.8 times apical width and gradually widening from base; flagellum 2 about 1.2 times width and not widening from base; flagellums 3–7 as long as apical width; antennal article 13 almost black, dull and small, folded beneath (Fig. 9); outer face of fore femur with a very broad yellow line, and mid femur apically with a small yellow markings; mid tibia sparsely with short white setae, and hind tibia with long goldenish denser setae; the length of mid tarsal 1:2:3:4 ≈ 5:1:1:1, and ≈ 24:6:2:1 in hind tarsus, the length of hind tibia about 1.5 times mid tibia; in dorsal view, the length of metasomal tergum 1 about 1.2 times width and the length of tergum 2 about 0.8 times width, the setae on sterum 2 denser than those on tergum 2; terminal metasoma subcircular, punctures bigger and denser than those on tergum 2, setae shorter and sparser and apical margin brownish.
Remarks
This species can be distinguished from the similar Discoelius zonalis (Panzer, 1801) and other members of the genus by the combination of the following characters: propodeum shining, sparsely with short setae; in male mandible with three teeth, of which theapical one very long, in female mandible with four teeth; scutellum and metanotum without obviously median furrow; terga 2-3 with a developed reflexed apical lamella, respectively (Fig. 10); tegula entirely black; in male, outer face of fore femur with a broad yellow line; metasomal tergum 1 with big punctures.
Distribution
China (Sichuan).
Etymology
The specific name emeishanensus is the Neolatin adjective, which refers to the region from which the type specimens were collected.
Key to the Chinese species of the genus DiscoeliusOriginal Description
- Zhou, X; Chen, B; Li, T; 2013: Two new species of the genus Discoelius Latreille (Hymenoptera, Vespidae, Eumeninae) from China, with a key to the Chinese species Journal of Hymenoptera Research, 32: 45-54. doi
Other References
- ↑ 1.0 1.1 1.2 Yamane S (1996) The genus Dis'coelius Latreille (Hymenoptera: Eumenidae) in Taiwan. Journal of Taiwan Museum 49: 111-115.
- ↑ Yasumatsu K (1934) On the genus Discoelius of eastern Asia, with a list of the species of the genus of the world (Hymenoptera: Eumenoidae). Mushi 7: 3-19.
Images
|
