Acronicta (Viminia) metaxantha ( Hampson, 1909 ), Volynkin & Matov & Han, 2017

Volynkin, Anton V., Matov, Alexej Yu. & Han, Hui-Lin, 2017, On the taxonomy of the genus Acronicta (Lepidoptera, Noctuidae). IV. Acronicta digna species-complex, Zootaxa 4344 (1), pp. 189-194: 193

publication ID

https://doi.org/10.11646/zootaxa.4344.1.13

publication LSID

lsid:zoobank.org:pub:F1E37C31-3217-4896-A10D-DD0E6BE055BC

persistent identifier

http://treatment.plazi.org/id/03EE87C2-FFEA-4D4A-FF3E-FEDC7AC4FA63

treatment provided by

Plazi

scientific name

Acronicta (Viminia) metaxantha ( Hampson, 1909 )
status

stat. rev.

Acronicta (Viminia) metaxantha ( Hampson, 1909)   , stat. rev., bona sp.

( Figs 1–3 View FIGURES 1 – 8 , 13, 14 View FIGURES 9 – 14 , 16, 19 View FIGURES 15 – 19 )

Acronycta metaxantha Hampson 1909   , Catalogue of the Lepidoptera Phalaenae   in the British Museum, 8: 139, Pl. 126, fig. 17 (Type

locality: [East China, Zhejiang] Chia-kou-ho).

Type material examined. Syntype ( Fig. 1 View FIGURES 1 – 8 ): ♂, printed label "Chia-Kou-Ho, 1700 ft., A.E. Pratt coll., July 1889 " / handwritten label " Acronycta metaxantha   type male. Hmpsn." / printed label "Leech Coll. 1900–64 " / printed label with QR-code "BMNH(E) 1377134" / round white label with red ring "Type" (coll. NHMUK).

Other material examined. 1 ♂, China, Shaanxi, Taibai Shan , 33°53' N, 107°49' E, March 2000, 1500 m GoogleMaps   , leg. Local collector, ex coll. Victor Siniaev / Gen. 3027 / ex coll. A.V. Nekrasov (coll. ZISP); 1 ♀, China, Shaanxi, Taibai Shan, 33°53' N, 107°49' E, June , 1500–1800 m GoogleMaps   , leg. Siniaev & Plutenko / ex coll. A.V. Nekrasov (coll. ZISP); 2 ♂, 1 ♀, China, Shuangliu County, Sichuan Prov. , 20.vii.2010, Acr-001, Acr-004   , leg. GH Huang (coll. CGH); 2 ♂, same data (coll. NEFU).  

Slides 0396 Matov, HGH089 Huang, hhl-3358, hhl-3359 Han (males); 0403 Matov (female)

Note. A. metaxantha   has been erroneously synonymized with A. digna ( Butler, 1881)   by Han & Kononenko (2010) on the basis of examination of a type specimen picture. Both taxa have more or less similar forewing pattern, but A. digna   has whitish (spring generation ( Fig. 7 View FIGURES 1 – 8 )) or grayish brown (late summer generation ( Figs. 4–6 View FIGURES 1 – 8 )) hindwings, whereas metaxantha   ( Figs. 1–3 View FIGURES 1 – 8 ) has conspicuously yellow hindwings with dark border. Examination of genitalia of the specimens from China externally identical to metaxantha   syntype ( Fig. 1 View FIGURES 1 – 8 ) showed differences in the genitalia of both sexes from those of digna   . For this reason, A. metaxantha   is revived here as a distinct species.

Diagnosis. A. metaxantha   ( Figs 1–3 View FIGURES 1 – 8 ) is externally similar to A. lutea   ( Fig. 8 View FIGURES 1 – 8 ) and A. digna   ( Figs. 4–7 View FIGURES 1 – 8 ), but differs from the first one by the more brownish ground colour of forewings, the somewhat more distinct pattern, presence of dark narrow fields in hind parts of the medial and subterminal areas, and the more diffuse dark terminal band on hindwings; from A. digna   it differs clearly by the somewhat narrower forewing with more rounded apex, the more brownish ground colour of forewings, the more diffuse pattern, the broader reniform stigma, the stronger dentate postmedial line with less whitish outer area, and the yellow ground colour of hindwings. The male genitalia of A. metaxantha   ( Figs 13, 14 View FIGURES 9 – 14 , 16 View FIGURES 15 – 19 ) are very close to those of A. digna   ( Figs 9–12 View FIGURES 9 – 14 , 15 View FIGURES 15 – 19 ), but differ by the aedeagus structure: in A. metaxantha   the distal part of aedeagus is much broader than in A. digna   , in A. digna   the subbasal diverticulum has two large well developed lobes while the second lobe of A. metaxantha   is very small or absent, distal cornuti on the vesica of A. metaxantha   are much larger than those of A. digna   . The female genitalia of the two taxa are very similar, but in A. metaxantha   ( Fig. 19 View FIGURES 15 – 19 ) the apophyses anteriores are shorter, the anterior part of ductus bursae near the connection with corpus bursae is broader, the corpus bursae is somewhat smaller.

Distribution. The species is known from central and eastern parts of China.

ZISP

Zoological Institute, Russian Academy of Sciences

CGH

National Museum of Prague

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Lepidoptera

Family

Noctuidae

Genus

Acronicta

Loc

Acronicta (Viminia) metaxantha ( Hampson, 1909 )

Volynkin, Anton V., Matov, Alexej Yu. & Han, Hui-Lin 2017
2017
Loc

Acronycta metaxantha

Hampson 1909
1909