Allacta bifolium Li & Wang, 2024
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publication ID |
https://dx.doi.org/10.3897/zookeys.1191.113043 |
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publication LSID |
lsid:zoobank.org:pub:582B7DC9-34F3-422A-ADF5-1FA30F6B1CEB |
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persistent identifier |
https://treatment.plazi.org/id/1175CE1D-9C23-4CC9-9EE9-28A2677B9FD3 |
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taxon LSID |
lsid:zoobank.org:act:1175CE1D-9C23-4CC9-9EE9-28A2677B9FD3 |
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treatment provided by |
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scientific name |
Allacta bifolium Li & Wang |
| status |
sp. nov. |
Allacta bifolium Li & Wang sp. nov.
Fig. 2A-M View Figure 2
Type material
(All in SWU). Holotype: China • male; Yunnan Prov., Baoshan City, Baihualing; 1253 m; 24 Aug., 2015; Xin-Ran Li, Zhi-Wei Qiu leg. Paratypes: China • 3 males; same data as holotype; 1 male, Yuxi City, Xinping County, Mount Ailao, 1933 m, 12 May, 2016, Lu Qiu, Zhi-Wei Qiu leg.
Diagnosis.
This species can be easily distinguished from its congeners by the small leaf-shaped tegmina, the absence of hind wings as well as the right side of the right stylus with a long, finger-like protrusion.
Measurements
(mm). Male, pronotum length × width: 3.1-3.2 × 4.9-5.2, tegmina length: 1.9-2.3, overall length: 11.2-12.5.
Description.
Male. Body dark brown (Fig. 2A, B View Figure 2 ). Face brown with a yellowish-brown transverse crescent band below antennal sockets (Fig. 2C View Figure 2 ). Lateral portions of thorax yellowish brown, including pronotum, mesonotum and metanotum as well as most of the tegmina (Fig. 2A View Figure 2 ). Tibiae yellowish brown with base dark brown. Cerci dorsally with basal half blackish brown, terminal parts yellowish brown; each segment ventrally with basal half dark brown and apical half light brown.
Vertex with interocular space greater than the distance between antennal sockets. The third, and fourth maxillary palpi of approximately the same length, slightly longer than the fifth (Fig. 2E View Figure 2 ). Pronotum subparabolic with hind margin nearly straight. Tegmina greatly reduced (Fig. 2H View Figure 2 ), slightly surpass mesonotum, without veins. Hind wings absent. Anteroventral margin of front femur Type B3 (Fig. 2F View Figure 2 ). Pulvillus only present on the fourth tarsomere (Fig. 2G View Figure 2 ). Tarsal claws symmetrical and unspecialized, arolia present.
Male abdomen and genitalia. Abdominal terga unspecialized. Supra-anal plate short, symmetrical, and hind margin arc-shaped. Paraprocts simple and plate-like (Fig. 2I View Figure 2 ). Subgenital plate asymmetrical with two styli arising in two concavities of hind margin. The right stylus longer than the left; the right cylindrical with a finger-like projection on right side; the left stylus nearly elliptical (Fig. 2J View Figure 2 ). The interstylar margin broadly V-shaped. Left phallomere complex (Fig. 2F View Figure 2 ). Median phallomere (L2vm) stem slender rod-like, slightly curved, apex blunt round with several small spines, base sharp with a large spine subsidiary sclerite; median phallomere subsidiary sclerite (R3) C-shaped clavate (Fig. 2L View Figure 2 ). Hooked phallomere (R2) on the right of subgenital plate, with pre-apical incision (Fig. 2M View Figure 2 ).
Etymology.
The Latin words bi - means pair, double, and folium means leaf, referring to the tegmina being degenerated into small leaf-like structures and hind wings absent.
Distribution.
China (Yunnan).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.