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 KARUMBE PAKALUKI ARRIAGA- VARELA, TOMASZEWSKA & SZAWARYN SP. NOV. ( FIGS 6E, F , 7A–E, G, J, K, M , 8D–F , 11A–F ) Zoobank registration: urn: lsid: zoobank. org:act: 349822CB-0F6B-4737-A717-D6CD788AD9CC Type material: Holotype , male, VENEZUELA : VEN: Miranda : 400 m , 35 km N Altagracia , Guatopo NP, Agua Blanca , 31.V-7.VI.87 -2, S&J Peck , ravine FITs ( CMN ) . Paratypes : same data as holotype ( one male and 2 ex, CMN; one female and 1 ex, MIZ ) . Diagnosis: Karumbe pakaluki is most similar to K. geiseri but can be distinguished from it by having the narrower prosternal process being about 0.67 as wide as procoxal diameter ( Fig. 11C ) ( 0.9 in K. geiseri ); pronotum with posterolateral indentation shorter and more rectangular ( Fig. 11B ) (longer and more oblique in K. geiseri ) and by the shape of the aedeagus ( Fig. 10E ). From K. brethesi , the third species of the genus, K. pakaluki can be easily distinguished by having dorsal surface covered with setiferous punctures and additional foveolate depressions without setae ( Fig.11D ) (in K.brethesi peculiar punctations as in Fig. 9E ), the central area of the metaventrite covered only with simple setiferous punctures ( Fig. 11F ), the pronotal disc much less concave along the internal lateral carina ( Fig. 11B ) and the terminal labial palpomere short and apically rounded, 1.2 longer than wide ( Fig. 7D ) (in K. brethesi : elongate and acuminate, 2.2 as long as wide as in Fig. 9B ). Description: Body: length 0.91–0.95 mm , 1.30 times as long as wide, 2.0 times as long as high, short oval and moderately convex, dark brown with yellowish legs, antennae and palpi ( Fig. 6E, F ). Antenna nearly 0.35 of length of body ( Figs 7A , 11A ); antennomeres 1–5 longer than wide; antennomeres 6, 7, 9 subquadrate and antennomere 8 transverse. Apical labial palpomere short and rounded, 1.2 times as long as wide ( Fig. 7D ). Pronotum 2.1 times as wide as long, 1.7 times wider at widest part than on front angles ( Fig. 11B ). Anterior crenulate margin comparatively wide. Area between lateral edge and internal lateral carina weakly concave, wide and continuously weakly narrowing posteriorly; pronotal disc not concave along internal lateral carina. Basal pronotal bordering line shallowly and irregularly crenulate. Posterolateral indentations comparatively shallow, rectangular. Prosternal process wide ( Fig. 11C ), with apex about 0.67 of width of procoxal cavity, narrowest near half-length, weakly widened apically, with lateral carinae raised, reaching almost anterior quarter of prosternum, central part between carinae slightly depressed. Elytra 0.70– 0.75 mm long, about as long a wide, 3.1 times as long and 1.4 times as wide as pronotum; lateral margins visible from above ( Fig. 6E ). Elytral dorsal surface covered with simple setiferous punctures and additional foveolate depressions without setae ( Fig. 11D ). Metaventrite with fine setiferous punctures at centre ( Fig. 11F ). Mesoventral process about 1.3 times as wide as mesocoxal diameter. Wings well developed. Legs. Meso- and metatrochanters flattened, roundly produced posteriorly. Abdomen. Ventrite 1 with rounded and laterally complete postcoxal lines ( Fig. 11F ). Ventrite 5 in male triangularly produced posteriorly at middle, in female straight. Male genital segment as in Fig. 8D . Male genitalia ( Fig. 8E ). Aedeagus with penis short and stout, narrow at base, widening towards curved, ramificate apex. Tegmen throne-shaped, long; tegminal strut short, reduced. Female genitalia. Bursa copulatrix large, with apical outlet of sperm duct. Spermatheca ( Fig. 8F ) submembranous, moderately large, elongatesubcylindrical, oblong; sperm duct long, about as long as spermatheca; accessory gland small, membranous, of irregular shape. Etymology: This species is dedicated to the late James Pakaluk, who had keen interest in small brown beetles. Distribution: Venezuela ( Fig. 20A ).