Eupolyphaga udenostyla Qiu, 2022
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publication ID |
https://dx.doi.org/10.3897/zookeys.1120.87483 |
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publication LSID |
lsid:zoobank.org:pub:4B7BD929-48A9-4517-8DF2-7F6780BC1AD3 |
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persistent identifier |
https://treatment.plazi.org/id/ED205416-E3D8-4955-AE89-7D50DEB363DE |
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taxon LSID |
lsid:zoobank.org:act:ED205416-E3D8-4955-AE89-7D50DEB363DE |
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treatment provided by |
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scientific name |
Eupolyphaga udenostyla Qiu |
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sp. nov. |
Eupolyphaga udenostyla Qiu sp. nov.
Figs 3 View Figure 3 , 4B, D, E-J View Figure 4
Type material.
Holotype: China · male; Sichuan Prov., Aba Prefecture, Wenchuan County, Keku Township; 1555 m; 31°30.93'N, 103°34.27'E, 5 May 2019; Lu Qiu leg.; SWU-B-CC-010006.
Paratypes: China · 3 males & 1 female, same collection data as holotype; SWU-B-CC-010007 to 010010 · 3 males, same collection data as holotype, but 7 August 2019; Huan-Yu Ren, Wei Han leg; SWU-B-CC-010011 to 010013 · 2 males & 4 females, Sichuan Prov., Wenchuan County, mountains behind the 5·12 Wenchuan Earthquake Memorial Museum; July-August 2019; Qi Li leg.; SWU-B-CC-010014 to 010019.
Diagnosis.
This species is remarkable for the absence of styli and the short tegmina and strongly reduced anal fields of hind wings in male, which can easily distinguish the males of E. udenostyla from all other species. The serrations of ootheca are distinctly reduced.
Description.
Male holotype: Body stout. Measurements (mm). Overall length: 23.5; body length: 19.7; body width (tegmina not included): 12.1; pronotum length × width: 17.1 × 9.4; tegmina length × width: 17.6 × 8.4.
Coloration. Body almost black, covered with black setae (Fig. 3A, B View Figure 3 ). Anterior margin of pronotum partially white (Fig. 3A View Figure 3 ).
Head: Ovoid, longer than wide. Vertex concealed under pronotum. Eyes small, slightly reduced. Interocular space wide but narrower than the distances between antennal sockets and between ocelli. Ocelli moderate, ocellar ridge distinct, with a row of setae on the upper edge (Fig. 3E View Figure 3 ). Antennae long, approximately equal to the length of the body (vertex to abdominal tip) (Fig. 4G View Figure 4 ). Ocellar ridge with two large pits below. Clypeus distinct, ante-clypeus almost quadrate, hind lateral angles obtusely rounded, posterior margin thin in the middle and slightly concave. Pronotum: Narrow, widest near the middle, anterior whitish margin narrow and short. Tegmina and hind wings: Shortened, only beyond the end of abdomen 3.8 mm. Apices of wings slightly exceed tegmina in resting position. Tegmen rounded apically (Fig. 3F View Figure 3 ). Hind wing short, oval, bluntly rounded apically, anal field strongly reduced (Fig. 3G View Figure 3 ). Legs: Slender, front femur type C1. Pulvilli moderate, tarsal claws simple and symmetrical, arolia large. Abdomen: Supra-anal plate narrowly transverse, pubescent, hind margin with an emargination medially, paraprocts simple, cerci short (Fig. 3H View Figure 3 ). Subgenital plate simple, posterior margin nearly straight, densely setose. Styli absent (Fig. 3I, J View Figure 3 ). Genitalia: L1 narrowed at base, genital hook (L3) stout basally, gradually tapered at distal half, the hook roundly curved, apex sharp (Fig. 3K View Figure 3 ).
Male paratypes: Similar to the holotype, no significant variation.
Female paratypes: Body length: 23.5-24.7 mm, body width: 17.5-18.1 mm. Body uniformly dark brown (Fig. 3C, D View Figure 3 ), ante-clypeus and base of labrum white. Eyes and ocelli small, with a pair of large dimples between antennal sockets (Fig. 3D View Figure 3 ). Distance between ocelli smaller than distance antennal sockets, and both smaller than interocular space (Fig. 4B View Figure 4 ). Arolia and pulvilli absent. Supra-anal plate straight at posterior margin, lateral portions somewhat angular, posterior margin with a wide hollow medially (Fig. 4D View Figure 4 ).
Nymph. Similar to the female, body uniformly black or dark brown.
Ootheca. Reddish brown. Serrations of keel small, blunt. Surface with elevated longitudinal lines, the width of ridge wider near the serrations (Fig. 4E, F View Figure 4 ).
Natural history.
This new species is distributed in the Minjiang River Basin (Wenchuan County) (Fig. 4I, J View Figure 4 ). Individuals hide in the soil and are active during night (LQ, pers. obs.).
Etymology.
uden - (Greek) + styla (Greek) indicate that the males of the new species have no styli.
Remarks.
The absence of styli in males makes this new species morphologically remarkable in Eupolyphaga . Males of the species also have distinctly shortened tegmina and wings, and extremely reduced anal areas on hind wings. The ootheca has reduced serrations. The type locality of the new species is close to the one of Eupolyphaga robusta , they are sympatric, distributed in Minjiang River Basin. Males and ootheca of this new species are easily distinguished from E. robusta , but females may be confused because of their similar black and large body. However, females of this new species have reduced ocelli (Fig. 4B View Figure 4 ), which are obviously smaller than those of E. robusta (Fig. 4A View Figure 4 ). Also, the posterior margin of the supra-anal plate (Fig. 4D View Figure 4 ) in this new species is obviously straighter than that of E. robusta (Fig. 4C, D View Figure 4 ).
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.
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Corydioidea |
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