Halyomorpha halys fixed as the type species of the genus Halyomorpha (Hemiptera: Heteroptera: Pentatomidae)

The genus Halyomorpha Mayr, 1864 (Hemiptera: Heteroptera: Pentatomidae: Pentatominae: Cappaeini) was established based on a single species, Halys timorensis Westwood, 1837 (currently junior subjective synonym of picus (Fabricius, 1794)). examination the voucher specimens identifi ed as by syntype timorensis, and syntypes Pentatoma halys Stål, 1855 revealed that: i) (Westwood), stat. restit., must be reinstated valid not considered H. picus; ii) Mayr’s belong to two different (Stål) picus. problem double misidentification type species is resolved action first revising author(s) according Article 70.3 ICZN (1999): we fi x here (= sensu nec Westwood) 1864. A list 36 currently placed in their synonyms compiled. We also issue warning concerning use citizen science approach for monitoring Southeast Asia (which may apply other taxa): It necessary keep mind that belongs group habitually similar (distributed from Pakistan southern China Indonesia Philippines) which cannot identified with certainty without male genitalia; records merely observations or habitus photographs accepted reliable.