Halyomorpha halys ( Stål, 1855 ), Heteroptera

Kment, Petr, Rédei, Dávid & Rider, David, 2021, Halyomorpha halys fixed as the type species of the genus Halyomorpha (Hemiptera: Heteroptera: Pentatomidae), Acta Entomologica Musei Nationalis Pragae 61 (2), pp. 615-630 : 622-623

Halyomorpha halys ( Stål, 1855)

( Figs 1 , 24–26 )

Pentatoma halys Stål, 1855: 182 (original description).

For a list of synonyms see Rංൽൾඋ (2006) and the checklist below.

Type material examined. Sඒඇඍඒඉൾ: ♀ ( Figs 24–26 ), ‘ China. [p] // Hamb [hw] // ♀ [p] // halys / Stål / Typ. [hw] // Typus [p, red, with black frame] // 182 [p] / 69 [hw in blue]’ ( NHRS). Specimen pinned through scutellum, left metatarsus missing, right antenna broken between basi- and distiflagellites but repaired by previous worker using glue ( NHRS). Sඒඇඍඒඉൾ: ♀, ‘ China.[p] // Hamb [hw] // ♀ [p]’. Specimen pinned through scutellum, left antenna and left protarsomeres II–III missing ( NHRS).

Additional specimens examined. 1♀, ‘ Hongkong [hw] // Stål.[p] // Typ. [p] // Cappaea / halys Stål. [hw]’ ( NHRS). 1 ♀, ‘Japonia [hw] // Mus. / Leyden [hw] // Pentatoma / dalpadoides / Voll. Typ. [hw] // Paratypus [p, red, with black frame]’ ( NHRS).

Comments. As H. halys is fixed in this paper as the type species of Halyomorpha , its identity is of particular interest. The species was described based on an unspecified number of specimens (syntypes) from ‘China’; a subsequent paper (Sඍචඅ 1856) stated that the specimens were provided by ‘Dom. [= Mr.] Hamberg’. Two females from the same lot of specimens, matching the original description (Sඍචඅ 1855) and information subsequently provided by the same author (Sඍචඅ 1856) and certainly belonging to the type material of Pentatoma halys , have been located in NHRS; to facilitate a revision of the genus, the one in better condition is illustrated here ( Figs 24–26 ). Both specimens are consistent with the identification of this species by recent authors (e.g., Jඈඌංൿඈඏ & KൾඋඓΗඇൾඋ 1978 or Vඣඍൾκ et al. 2014).

Two additional females, one from ‘Hongkong’ and one from ‘Japonia’ [= Japan], were labelled as types and pinned together with the above listed two syntypes of H. halys , but as they are not from the type locality of H. halys as listed by Sඍචඅ (1855, 1856), they are considered as having no type status. One of them is provided with a handwritten label ‘ Pentatoma dalpadoides Voll [enhoven]’, which is apparently an unpublished name; Gynenica dalpadoides Vollenhoven, 1867 (currently Platynopus dalpadoides ) is an unrelated species belonging to Asopinae (TΗඈආൺඌ 1994), its type material is deposited in RMNH and has been seen by us (D. Rédei, pers. observ.).

Figures

Figs 1–3. Specimens of Halyomorpha Mayr, 1864 from Mayr collection (NHMW): 1 – Halyomorpha halys (Stål, 1855), male (body length 12.80 mm); 2 – Halyomorpha picus (Fabricius, 1794), male (14.63 mm); 3 – labels. Orig. P. Kment.

Figs 24–26. Pentatoma halys Stål, 1855, female syntype (NHRS): 24 – dorsal view, 25 – ventral view, 26 – labels. Scale bar in mm. Orig. D. Rédei.