Setosicornia Pic, 1911

Telnov, Dmitry, 2024, On the taxonomy of some South American and Australo-Pacific Anthicidae Latreille, 1819 (Coleoptera) with new subfamily and tribe-rank synonymies, Zootaxa 5501 (3), pp. 401-424 : 414-415

Setosicornia Pic, 1911

Pic (1911: 117), type species Setosicornia argentina Pic, 1911 [monotypy].

Csiki (1913: 4), familial placement in Ripiphoridae .

Bruch (1915: 244), checklist, in Ripiphoridae .

Lucas (1920: 592), checklist [no familial placement given].

Blackwelder (1945: 479), checklist, in Ripiphoridae .

Selander (1957: 94), taxonomy, ‘provisionally referred to the Pelecotominae on the basis of published accounts of their external morphology’.

Falin (2002: 438), taxonomy, ‘ probably do not belong in the family [ Ripiphoridae ] but have yet to be officially removed and reassigned’.

The genus was originally erected without a formal familial placement. The comments by Pic (1911: 117, footnote 3) specifically pointed on an unclear position of this genus: ‘Ce genre, voisin de Dumbrodianus [sic!] Pic par la forme de sa tète, semble avoir des caractères communs à différents groupes d’Hétéromères, mais il est très caractérisé par ses antennes très particulières; je reviendrai plus tard sur la place qui semble devoir lui être assignée’. Dunbrodianus Pic, 1904 (misspelt ‘ Dumbrodianus ’ on p. 117 and 118 in Pic (1911)), is a monotypic South African genus informally placed in the Afreminae Levey, 1985 which is considered to be incertae sedis in the Tenebrionoidea ( Lawrence et al. 2010). However, at the time of description of Setosicornia (1911) and until the paper by Lawrence et al. (2010) appeared, Dunbrodianus was considered to be a part of the Ripiphoridae (‘in Rhipipltoridum’ as in Pic (1904: 66)).

Setosicornia argentina Pic, 1911 ( Fig. 6 ), the type species of its genus, differs clearly from Dunbrodianus and any other ripiphorid subgroups by the prognathous head with mouthparts slightly declivous, the head base not abruptly constricted posteriorly, the absence of an occipital ridge, the strongly elongate, filiform antenna with slender, long setose antennomeres 3‒11, the broad cranial ‘neck’ which is about 0.6‒0.7× or about 2/3 as wide as head across compound eyes and is not concealed from above by the occiput, the pronotum widest at the midlength and distinctly narrower than the combined elytral width, the posterolateral angles of the pronotum not acutely projecting and not embracing the elytral humeri, the presence of a broad anterior dorsal flange and the basal dorso-lateral sulcus on pronotum, the comparatively broader intercoxal process of first abdominal ventrite, and the symmetrical aedeagus. These features are characteristic for Eurygeniinae . Consequently, a new placement in Eurygeniini ( Anthicidae : Eurygeniinae ) is herewith proposed for Setosicornia .

= Atenizoides Gilmour, 1968 syn. nov.

Gilmour (1968: 102), type species Atenizoides curacaoae Gilmour, 1968 [original designation].

Philips & Ivie (1989: 89), new familial placement in Anthicidae .

This taxon was originally described in Methiini Thomson, 1860 of the cerambycine Cerambycidae ( Gilmour 1968; Monné et al. 2007). It was moved to Eurygeniinae Anthicidae (without tribal placement) by Philips & Ivie (1989: 162). Current position of the taxon in Eurygeniini LeConte, 1862 was first proposed by Chandler (2010: 730) and subsequently followed by Gimmel & Johnston (2023). The genus was hitherto considered monotypic: its type species, Atenizoides curacaoae , remains known only from Curaçao Island, Netherlands Antilles, southern Caribbean Sea.

Philips & Ivie (1989) justified the placement of Atenizoides in Eurygeniinae . In turn, its placement in Eurygeniini by Chandler (2010) was tentative since it was proposed without discussing the morphological features of the genus.

After studying the holotype of Atenizoides curacaoae at the BMNH ( Figs 7‒9 ) I found this taxon congeneric with Setosicornia and a new synonym is proposed. The present system of the Eurygeniinae genera appears suboptimal and several other genera require redefinitions.

Figures

FIGURE 6. Setosicornia argentina Pic, 1911, syntype ♂. A—Habitus, dorsal view; B—ditto, ventral view: C—ditto, lateral view; D—ditto, head, antero-dorsal view; D—ditto, antenna, antennomeres 2‒11 [not to scale]. Image courtesyAntoine Mantilleri and Christophe Rivier (MNHN).

FIGURE 7. Setosicornia curacaoae (Gilmour, 1968) comb. nov., holotype ♂. A—Habitus, dorsal view; B—ditto, anterodorsal view [not to scale].

FIGURE 8. Setosicornia curacaoae (Gilmour, 1968) comb. nov., holotype ♂, forebody.A—Head, pro- and mesothorax, ventral view; B—ditto, latero-ventral view; B—Pronotum and mesothorax, lateral view [not to scale].

FIGURE 9. Setosicornia curacaoae (Gilmour, 1968) comb. nov., holotype ♂, terminalia and genitalia. A—Tergite VII, dorsal view; B—Morphological sternite VII, ventral view; C—Tergite VIII, dorsal view; D—Morphological sternite VIII, ventral view; E—Morphological sternite IX; F—Aedeagus, median lobe; G—ditto, apex; H—Aedeagus, tegmen; I—ditto, apex [not to scale].