Belongs within: Diaperinae.
The Adelinina are a group of tenebrionid beetles characterised by elaborate clavae on the median lobe of the aedeagus (Matthews & Bouchard 2008).
Characters (from Aaltu et al. 2002): Flattened, elongate oval beetles, antennae gradually enlarged; eyes usually narrower than frons across epistomal canthus; mesocoxal cavities closed by sternite; epipleuron abruptly narrowed near anterior margin of fifth abdominal sternite; aedeagus with clavae.
<==AdelininaMB08 |--Gnatocerus Thunberg 1814MB08 (see below for synonymy) | `--G. cornutus (Fabricius 1798) (see below for synonymy)MB08 |--Cynaeus LeConte 1862AT02 | `--C. angustus LeConte 1851AT02 |--Doliodesmus Spilman 1967AT02 | `--D. charlesi Spilman 1967AT02 |--Iccius Champion 1866AT02 | `--I. cylindricus Champion 1866AT02 |--Sitophagus Mulsant 1854AT02 | `--S. hololeptoides Cast. 1840 (see below for synonymy)FS90 |--Palembomimus Matthews & Lawrence 2005MB08 | |--*P. deplanatus (Champion 1894) [=Platydema deplanatum]MB08 | `--P. bicinctus (Champion 1894) [=Platydema bicinctum]MB08 |--Adelina Dejean 1835MB08 (see below for synonymy) | |--*A. plana (Fabricius 1801)MB08 [=Cucujus planusMB08, Doliema planaFS90; incl. D. pallidus Say 1823FS90] | `--A. platisoides (Pascoe 1860) [=*Doliema platisoides]MB08 `--Alphitophagus Stephens 1832 [incl. Phyletes Redtenbacher 1845, Phylethus Redtenbacher 1849]AT02 |--*A. quadripustulatus Stephens 1832MB08 |--A. bifasciatus (Say 1824)MB08 (see below for synonymy) `--A. quadrinotatus Marseul 1876 (n. d.)MB08
Adelina Dejean 1835MB08 [incl. Doliema Pascoe 1860MB08, Schedarosus Reitter 1876AT02, Sitophagus Horn 1870 non Mulsant 1854AT02]
Alphitophagus bifasciatus (Say 1824)MB08 [=Diaperis bifasciatusMB08; incl. Platydema lilliputanum Carter 1937MB08, Alphitophagus pictusL19, A. populiL19]
Gnatocerus Thunberg 1814MB08 [=Gnathocerus Agassiz 1846MB08; incl. Cerandria Lucas 1847AT02, E12, Echocerus Horn 1870AT02, Sicinus Champion 1886AT02, Uloma Stephens 1832 non Dejean 1821AT02]
Gnatocerus cornutus (Fabricius 1798) [=Trogosita cornuta; incl. Neomida cucullata Montrouzier 1860, *Gnatocerus ruber Thunberg 1814]MB08
Sitophagus hololeptoides Cast. 1840 [incl. S. castaneus Reitt. 1877, S. complanatus, S. farinarius Woll. 1858, S. solieri Muls. 1854]FS90
*Type species of generic name indicated
References
[AT02] Aalbu, R. L., C. A. Triplehorn, J. M. Campbell, K. W. Brown, R. E. Somerby & D. B. Thomas. 2002. Tenebrionidae Latreille 1802. In: Arnett, R. H., Jr, M. C. Thomas, P. E. Skelley & J. H. Frank (eds) American Beetles vol. 2. Polyphaga: Scarabaeoidea through Curculionoidea pp. 463–509. CRC Press.
[E12] Evenhuis, N. L. 2012. Publication and dating of the Exploration Scientifique de l’Algérie: Histoire Naturelle des Animaux Articulés (1846–1849) by Pierre Hippolyte Lucas. Zootaxa 3448: 1–61.
[FS90] Fleutiaux, E., & A. Sallé. 1890. Liste des coléoptères de la Guadeloupe et descriptions d’espèces nouvelles. Annales de la Société Entomologique de France, 6e série 9: 351–484.
[L19] Lea, A. M. 1919. Notes on some miscellaneous Coleoptera with descriptions of new species.—Part V. Transactions of the Royal Society of South Australia 43: 166–261, pls 25–27.
[MB08] Matthews, E. G., & P. Bouchard. 2008. Tenebrionid Beetles of Australia: Descriptions of tribes, keys to genera, catalogue of species. Australian Biological Resources Study: Canberra.