CERASOMMATIDIIDAE BRÈTHES, 1925 STAT. RESTORED

Arriaga-Varela, Emmanuel, Tomaszewska, Wioletta, Szawaryn, Karol, Robertson, James, Seidel, Matthias, Ślipiński, Adam & Fikáček, Martin, 2023, The resurrection of Cerasommatidiidae, an enigmatic group of coccinelloid beetles (Coleoptera: Coccinelloidea) based on molecular and morphological evidence, Zoological Journal of the Linnean Society 197 (4), pp. 1078-1115 : 1086-1087

publication ID	https://doi.org/ 10.1093/zoolinnean/zlac082
publication LSID	lsid:zoobank.org:pub:99842C3A-879F-4552-96B7-204D79CF3EDF
DOI	https://doi.org/10.5281/zenodo.7814157
persistent identifier	https://treatment.plazi.org/id/03C2CE00-FFF1-FF92-3D6B-0F66FBFF4307
treatment provided by	Plazi
scientific name	CERASOMMATIDIIDAE BRÈTHES, 1925 STAT. RESTORED
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Cerasommatidiidae Brèthes, 1925: 199 .

Type genus: Cerasommatidia Brèthes, 1925 by original designation.

As synonym of Eupsilobiinae Casey, 1895: 452 .– Pakaluk et al., 1994: 228; Shockley et al., 2009: 27; Bouchard et al., 2011: 372.

Diagnostic combination: Body short oval (0.80– 1.45 mm) and convex ( Figs 3 View Figure 3 , 6 View Figure 6 , 12 View Figure 12 , 17 View Figure 17 ). Head with frontoclypeal suture present ( Figs 9A View Figure 9 , 15B View Figure 15 , 18B View Figure 18 ). Eyes coarsely faceted ( Figs 4A View Figure 4 , 5A View Figure 5 , 7A View Figure 7 , 9A View Figure 9 , 15B View Figure 15 , 16A View Figure 16 , 17D View Figure 17 ). Antennal sockets visible from above ( Figs 4A View Figure 4 , 5A View Figure 5 , 9A View Figure 9 , 16A View Figure 16 ). Ventral antennal grooves deep between eyes and mouthparts ( Figs 3C View Figure 3 , 18B View Figure 18 ). Gular sutures short, widely separated, weakly convergent anteriorly ( Figs 7A View Figure 7 , 15A View Figure 15 ). Tentorium with anterior arms fused medially and widely divergent anteriorly, posterior arms connected throughout their length to posterior weakly sinuate transverse bridge/corpotentorium ( Figs 3C View Figure 3 , 7A View Figure 7 , 17D View Figure 17 ). Antenna composed of 11 antennomeres with distinct two-antennomere club ( Figs 3C View Figure 3 , 5E View Figure 5 , 7A View Figure 7 , 11A View Figure 11 , 12C View Figure 12 , 13A View Figure 13 , 15A View Figure 15 , 18A View Figure 18 ). Labrum large, sparsely setose, rounded anteriorly with or without small, median emargination ( Figs 7B View Figure 7 , 10A View Figure 10 , 13B View Figure 13 , 15B View Figure 15 , 18B View Figure 18 ). Maxillary palpi ( Figs 3C View Figure 3 , 5B View Figure 5 , 7C View Figure 7 , 9B View Figure 9 , 10A View Figure 10 , 13C View Figure 13 , 15A View Figure 15 , 17E View Figure 17 ) with four palpomeres: palpomere 1 small; palpomere 2 weakly transverse and somewhat bulbous; palpomere 3 transverse; terminal palpomere distinctly elongate, swollen near base and then narrowing/flattened laterally toward apex; apex with short, sclerotized sensilla. Mandible stout ( Figs 7E View Figure 7 , 13E View Figure 13 , 17F View Figure 17 ), sclerotized, with two apical teeth and two small subapical teeth; prostheca large, membranous with fringe of stout setae along its inner margin and with a series of long sclerotized, teeth-like projections apically; mola large, strongly sclerotized, with distinct transverse ridges. Labium with mentum irregularly hexagonal, with anterior margin straight, surface flat; prementum weakly elongate, sclerotized with ligula submembranous, lobed at sides ( Figs 5B View Figure 5 , 7D View Figure 7 , 9B View Figure 9 , 10A View Figure 10 , 15A View Figure 15 ). Palpi with three palpomeres, widely separated by a distance more than width of palpiger: palpomere 1 smallest, palpomere 2 bulbous, palpomere 3 sometimes slightly bulbous.

Pronotum strongly transverse, widest at or near base and strongly convergent anteriorly ( Figs 3A View Figure 3 , 4B View Figure 4 , 5C View Figure 5 , 10C View Figure 10 , 11B View Figure 11 , 18C View Figure 18 ). Front angles weakly produced anteriorly, obtuse; hind angles often with small, oblique indentation to receive humeral corner of elytron. Prosternum large, in form of chin piece covering mouthparts ( Figs 5D View Figure 5 , 7F View Figure 7 , 9D View Figure 9 , 10B View Figure 10 , 11C View Figure 11 , 15D View Figure 15 , 16C View Figure 16 , 18D View Figure 18 ); prosternal process narrowest in about its half-length, continuously widened apically, provided with raised, paired lateral carinae or single median carina. Hypomeron with deep and long antennal grooves ( Figs 7F View Figure 7 , 9D View Figure 9 , 10B View Figure 10 , 15D View Figure 15 , 18D View Figure 18 ). Mesoventral intercoxal process widely separates mesocoxae. Mesocoxa circular in outline, its cavity outwardly open; trochantin concealed ( Figs 3D View Figure 3 , 4E View Figure 4 , 5H View Figure 5 , 7I View Figure 7 , 9F View Figure 9 , 10E View Figure 10 , 11F View Figure 11 , 13D View Figure 13 , 15G View Figure 15 , 16D View Figure 16 , 17G View Figure 17 , 18E View Figure 18 ). Meso-metaventral junction arcuate anteriorly. Metaventrite strongly transverse, weakly convex, without postcoxal lines. Metanepisternum with small, outer blunt projection near anterior margin ( Figs 3D View Figure 3 , 7I View Figure 7 , 17G View Figure 17 ). Metacoxae transverse, widely separated ( Figs 3D View Figure 3 , 7I View Figure 7 , 9F View Figure 9 , 10F View Figure 10 , 16D View Figure 16 , 18E View Figure 18 ). Metendosternite with short stalk and widely separated anterior arms and anterior tendons ( Fig. 7J View Figure 7 , 13D View Figure 13 ). Epipleura not foveate. Legs with trochanterofemoral attachment subheteromeroid ( Figs 3D View Figure 3 , 5H View Figure 5 , 7K View Figure 7 , 9F View Figure 9 , 10F View Figure 10 , 11F View Figure 11 , 13D View Figure 13 , 15D View Figure 15 , 16D View Figure 16 , 18E View Figure 18 ). Tibiae slender, gradually weakly widening towards tarsus; surrounded by short, stout spines. Tarsal formula 4-4- 4 in both sexes with tarsomere 1 weakly and tarsomere 2 distinctly lobed ventrally, tarsomere 3 short and tarsomere 4 about as long as tarsomere 1 ( Figs 4F View Figure 4 , 5F View Figure 5 , 7L View Figure 7 , 10D View Figure 10 , 11E View Figure 11 , 15E View Figure 15 , 18G View Figure 18 ). Claws toothed at base ( Figs 5F View Figure 5 , 13F View Figure 13 , 15E View Figure 15 , 16E View Figure 16 ).

Abdomen with six ventrites in both sexes ( Figs 4G View Figure 4 , 8M View Figure 8 , 15H View Figure 15 , 18G View Figure 18 ). Ventrite 1 with ( Figs 3E View Figure 3 , 4G View Figure 4 , 5H View Figure 5 , 7M View Figure 7 ) or without distinctly developed, rounded postcoxal lines ( Figs 15H View Figure 15 , 16F View Figure 16 , 18G View Figure 18 ); at midline about as long as three next ventrites together. Ventrite 5 with posterolateral angles strongly produced backwards and somewhat overlapping antero-lateral parts of ventrite 6 (anterior margin of ventrite 6 much narrower than posterior margin of ventrite 5); ventrite 6 arcuate apically, surrounded by anterior margin of tergite VIII bent downwards, appearing as narrow, false ‘ventrite 7’. Male genital segment (IX) reduced but with strongly developed, sclerotized, long, narrow, single apophysis ( Figs 3E View Figure 3 , 8A, D View Figure 8 , 14A, D View Figure 14 , 17I View Figure 17 ). Aedeagus ( Figs 3F View Figure 3 , 8B, E View Figure 8 , 14B, E View Figure 14 , 17H View Figure 17 ) with penis resting on its side when retracted.Ovipositor of female genitalia without coxites ( Figs 8C, G View Figure 8 , 14C, F View Figure 14 , 17J View Figure 17 ).