Adimus Billberg, 1820a : 57

Bezděk, Jan & Biondi, Maurizio, 2018, On the generic names proposed in Chrysomelidae (Coleoptera) by Gustaf Johan Billberg, Zootaxa 4422 (2), pp. 184-190 : 187

Adimus Billberg, 1820a: 57

Names originally included:

1. oblongus available name for Galleruca oblonga Gyllenhal, 1808 ; now Mimastra oblonga (Gyllenhal, 1808) ; genus Mimastra Baly, 1865 ( Galerucinae , Galerucini )

2. oblongus var. b unavailable name

3. unicolor available name for Galleruca unicolor Illiger, 1800 ; now Hoplasoma unicolor (Illiger, 1800) ; genus Hoplasoma Jacoby, 1884 ( Galerucinae , Galerucini )

4. coffeae available name for Chrysomela coffeae Hornstedt, 1788 ; now Aulacophora coffeae (Hornstedt, 1788) ; genus Aulacophora Chevrolat, 1836 ( Galerucinae , Galerucini )

5. caesicollis nomen nudum

6. ventralis nomen nudum

7. brunneus nomen nudum

8. praeustus nomen nudum

9. cincta nomen nudum

10. cincta var. b unavailable name

11. distinctus nomen nudum

12. guttatus nomen nudum

13. 4maculatus available name for Chrysomela quadrimaculata Linnaeus, 1758 ; now Phyllobrotica quadrimaculata (Linnaeus, 1758) ; genus Phyllobrotica Chevrolat, 1836 ( Galerucinae ,

Galerucini )

14. fuscus nomen nudum

15. palliatus available name for Chrysomela palliata Schaller, 1783 ; now Aulacophora palliata (Schaller, 1783) ; genus Aulacophora Chevrolat, 1836 ( Galerucinae , Galerucini )

16. nigricornis available name for Crioceris nigricornis Fabricius, 1775 ; synonym of Sermylassa halensis (Linnaeus, 1767) ; genus Sermylassa Reitter, 1913 ( Galerucinae , Galerucini )

17. marginella available name for Galleruca marginella Fabricius, 1801 ; synonym of Cornubrotica dilaticornis (Baly, 1879) ; genus Cornubrotica Bechyné & Bechyné, 1969 ( Galerucinae ,

Galerucini )

18. geniculatus nomen nudum

19. lawsoniae available name for Galleruca lausoniae Fabricius, 1798 ; synonym of Altica caerulea (Olivier, 1791) ; genus Altica Geoffroy, 1762 ( Galerucinae , Alticini)

20. fuscicornis nomen nudum

21. bassiae available name for Galleruca bassiae Fabricius, 1801 ; synonym of Macrohaltica jamaicensis (Fabricius, 1792) ; genus Macrohaltica Bechyné, 1959 ( Galerucinae , Alticini)

22. aethiops nomen nudum

23. cupreatus nomen nudum

24. alni available name for Chrysomela alni Linnaeus, 1758 ; now Agelastica alni (Linnaeus, 1758) ; genus Agelastica Chevrolat, 1836 ( Galerucinae , Galerucini )

Type species. Galleruca lausoniae Fabricius, 1798 , by present designation.

Current status. Synonym of Altica Geoffroy, 1762 .

Comments. The generic name Adimus Billberg, 1820 is a completely forgotten name. Billberg (1820a) listed 24 names in Adimus , of which twelve are nomina nuda and two unavailable one-letter names of varieties. As shown above, 11 available names are now classified in well known genera: Mimastra , Hoplasoma , Aulacophora , Phyllobrotica , Sermylassa , Cornubrotica , Macrohaltica , and Agelastica , all of them described after Adimus . The only available name with still unclear identity remains Galleruca lausoniae Fabricius, 1798 , described from “ India orientalis”. This name disappeared from the entomological literature. We know only two very old publications where it is listed ( Perty 1831, Sturm 1843). We studied the three syntypes, one male and two females, deposited in ZMUK and they are undoubtedly belonging to the genus Altica Geoffroy, 1762 . The two females belong to a different species with respect to the male. After the examination of the tignum, the vaginal palpi, and the spermathecae, the two females resulted to be attributable to the taxonomically critic couple “ aenea -birmanensis ”, more probably to the species birmanensis (Jacoby, 1896) because the morphometry and the color pattern fit better with this species ( Reid & Beatson 2015). The male, instead, is characterized mainly for having very large eyes and this feature allows to attribute it without doubt to the couple “ caerulea - gravida ” ( Reid & Beatson, 2015). Unfortunately, the aedeagus is missing, but considering some external characters (i.e. elytra and hypomeron shining, without microsculpture) and the geographical distribution ( Altica gravida (Blackburn, 1896) is occurring only in Australia), this male can be considered as belonging to the species Altica caerulea (Olivier, 1791) with increased confidence. It is in agreement with Sturm (1843) who also considered lausoniae (reported as Graptodera lawsoniae (Fabricius)) conspecific with caerulea (Olivier) but with reversed precedence. Because the type series of Galleruca lausoniae consists of two species we designate the male as lectotype to fix the species identity (for the photo of the lectotype see Figs 4–5 ). The correct synonymy is as follows, senior synonym first: Altica caerulea (Olivier, 1791) = Galleruca lausoniae Fabricius, 1798 . Because the type species of Adimus was never designated, we propose Galleruca lausoniae Fabricius, 1798 as its type species and, consequently, the following synonymy is established: Altica Geoffroy, 1762 = Adimus Billberg, 1820 syn. nov.

Figures

FIGURES 1–5. Type specimens and their labels. 1–3: Chrysomela concolor Fabricius, 1781 (holotype, female); 4–5: Galleruca lausoniae Fabricius, 1798 (lectotype, male).