Epiracma annularis Wang
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publication ID |
https://doi.org/ 10.11646/zootaxa.3835.2.8 |
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publication LSID |
lsid:zoobank.org:pub:23D178B6-5A62-4E6A-9CD3-1BBA8002A04B |
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DOI |
https://doi.org/10.5281/zenodo.5231953 |
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persistent identifier |
https://treatment.plazi.org/id/6B7787AC-8913-FFB5-FF0C-357EE51BF9E5 |
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treatment provided by |
Plazi |
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scientific name |
Epiracma annularis Wang |
| status |
sp. nov. |
Epiracma annularis Wang , sp. nov.
( Figs. 6 View FIGURES 1 − 6 , 11 View FIGURES 7 − 11 , 15 View FIGURES 12 − 15 )
Type material. Holotype ♂, Taiwan: Daigyurin, 16 III 1925, coll. S. Issiki, genitalia slide No. 142403. Paratype: 1♀, same data as holotype ( USNM).
Diagnosis. Epiracma annularis can be separated from its congeners by the costa having a trifurcate basal process in the male genitalia. It is similar to E. aedeagifera in appearance and in genitalia, but can be distinguished by the lutescent forewing, the valva with distal 1/2 roundly dilated, and the aedeagus bearing tufted long setae medially. In E. aedeagifera, the forewing is yellowish gray, the valva is elliptically dilated in distal 1/3, and the aedeagus is absent of setae medially.
Description. Imago ( Fig. 6 View FIGURES 1 − 6 ). Wingspan 19.0 mm. Head lutescent. Labial palpus pale yellow, second segment with scattered brown scales. Antenna lutescent, with pale brown rings on dorsal surface of flagellum. Thorax, tegula and forewing lutescent. Forewing with scattered pale yellowish brown scales; costal margin arched, apex pointed, termen oblique; pale yellowish brown stripe extending from upper angle of cell to tornus; dim brown spot set at middle of cell and fold, respectively; cilia lutescent, tinged with brown. Hindwing and cilia lutescent; cilia lined with pale brown at basal 1/4. Legs lutescent.
Male genitalia ( Fig. 11 View FIGURES 7 − 11 ). Gnathos a circular ring, with dense spinules. Tegumen with each branch gradually widened anteriorly. Valva narrow basally, gradually widened to middle, distal 1/2 roundly expanded, with long dense setae; costa with a trifurcate basal process, dentate on dorsal margin. Sacculus narrowly band shaped, curved upward in S shape, acute apically. Saccus broad triangular, rounded anteriorly. Juxta with basal half semicircular; distal half broadly concave inward at middle, forming two triangular lateral lobes, each lobe acuminate. Aedeagus slightly shorter than valva, basal 1/3 thin, near middle arched and tufted with dense long setae dorsally; distal half even, parallel sided, bearing a row of sparse long setae, with tuft of long setae apically.
Female genitalia ( Fig. 15 View FIGURES 12 − 15 ). Papilla analis wide, conical, setose. Apophysis anterioris stout, less than half length of apophysis posterioris. Lamella postvaginalis mound-like, concave inwardly at middle, with stout long setae; lamella antevaginalis consisting of two arched sclerotized plates. Antrum with posterior half expanded in triangle laterally, anterior half parallel sided. Ductus bursae with posterior 1/3 sclerotized, anterior 2/3 membranous. Corpus bursae elliptical, shorter than ductus bursae; signum small elliptical, with dense tiny teeth, bearing a larger spinous process anteriorly.
Distribution. China ( Taiwan).
Etymology. The specific name is from the Latin annularis , referring to the shape of the gnathos.
Fund. This study is supported by the National Natural Science Foundation of China (No. 31372241 and No. J1210005).
| USNM |
Smithsonian Institution, National Museum of Natural History |
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.