The resurrection of Cerasommatidiidae, an enigmatic group of coccinelloid beetles (Coleoptera: Coccinelloidea) based on molecular and morphological evidence Author Arriaga-Varela, Emmanuel Author Tomaszewska, Wioletta Author Szawaryn, Karol Author Robertson, James Author Seidel, Matthias Author Ślipiński, Adam Author Fikáček, Martin text Zoological Journal of the Linnean Society 2023 2022-11-24 197 4 1078 1115 http://dx.doi.org/10.1093/zoolinnean/zlac082 journal article 10.1093/zoolinnean/zlac082 f791f8ed-ae19-41a1-b5cc-b9b2cc89dec4 0024-4082 7814127 99842C3A-879F-4552-96B7-204D79CF3EDF KEY TO GENERA AND SPECIES OF CERASOMMATIDIIDAE 1. Trochanters flattened, projected to cover tibio-tarsal joint in repose ( Figs 4E, 4 , 5H , 7K , 9F , 10F , 11F , 18E ); vestiture of dorsal body surface uniform (tiny decumbent hairs (often missing)) ( Figs 4B, C , 5C, G , 18C, F ) or moderately long suberect setae ( Figs 9E , 10C , 11B, D ) ....................................................................................... 2 - Trochanters normal, not flattened or produced to cover tibio-tarsal joint in repose ( Figs 13D , 15D, G , 16D ); vestiture of dorsal surface of body composed of minuscule decumbent hairs and sparse long erect setae ( Figs 15F , 16B ) [ Puerto Rico , Venezuela ] ........................................................................................................ Yamuy …4 2. Pronotum with lateral and anterior borders simply margined ( Figs 4B , 5C , 18C ); dorsal surface with tiny decumbent hairs (often missing) ( Figs 4B, C , 5C, G , 18C, F )............................................................................... 3 - Pronotum with lateral margins bordered with an internal subparallel carinae ( Figs 9C , 10C , 11B ); anterior margin of pronotum with crenulate bordering line ( Figs 9C , 10C , 11B ); dorsal surface with moderately long suberect pubescence (often missing) ( Figs 6A–F , 9E , 10C )…. .......................................................... Karumbe .... 5 3. Abdominal ventrite 1 with complete semicircular postcoxal lines ( Figs 3D , 4G , 5H ); prosternal process with long lateral carinae reaching anterior third of prosternum, without median carina ( Fig. 5D ); Brazil ....................................................................................................................................... Cerasommatidia …7 - Abdominal ventrite 1 without postcoxal lines, only with anterior bordering margin thickened posterior to coxae and widening laterally ( Fig. 18G ); prosternum with raised, single, median carina, ( Fig. 18D ); Madagascar .......................................................................................................................... MahaƲelo madagasus 4. Pronotum with lateral margins bordered with an internal carina ( Figs 12C, D , 16B ); anterior margins of metaventrite and abdominal ventrite 1 with small longitudinal carina below each coxa ( Fig 16D, F ); Puerto Rico ............................................................................................................................................ Yamuy marginatus - Pronotum with lateral margins only narrowly bordered with simple bordering line, with internal carina short, weakly marked, present only basally ( Fig. 15C ); anterior margins of metaventrite and abdominal ventrite 1 without longitudinal carinae beyond coxae ( Figs 13D , 15G, H ); Puerto Rico , Venezuela .................................................................................................................................... Yamuy constratus 5. Body more than 1.40 mm long; metaventrite with setiferous punctures inserted in wide foveate impressions ( Fig. 9F ); terminal labial palpomere elongate and acuminate, 2.2 times as long as wide ( Fig. 9B ); Brazil ........................................................................................................................................... Karumbe brethesi - Body less than 1.00 mm long; metaventrite with simple setiferous punctures ( Figs 10E , 11F ); terminal labial palpomere short and apically rounded, 1.2–1.4 times as long as wide ( Figs 7D , 10A ); Venezuela , Grenada ..6 6. Prosternal process narrower, about 0.67 of width of procoxal diameter ( Fig. 11C ); pronotum with posterolateral indentation short and rectangular ( Fig. 11B ); Venezuela .......................................... Karumbe pakaluki - Prosternal process wider, about 0.90 of width of procoxal diameter ( Fig. 10B ); pronotum with postero-lateral indentation large and oblique ( Fig. 10C ); Grenada ..................................................................... Karumbe geiseri 7. Pronotum 2.0 times as wide as long, with bordering line at anterior margin complete; body size about 1.7 mm ..................................................................................................................................... Cerasommatidia rotundata - Pronotum at least 2.2 times as wide as long, with bordering line at anterior margin vanishing medially; body size 1.1–1.4 mm ...................................................................................................................................................... 8 8. Body 1.15 mm long; posterior margin of pronotum narrowly bordered at least medially ( Fig. 5C ); aedeagus as in Fig. 3E .................................................................................................................... Cerasommatidia plaumanni - Body 1.4 mm long; posterior margin of pronotum not bordered ( Fig. 4B ); aedeagus as in Fig. 3F ........................................................................................................................................... Cerasommatidia arroaei