Karumbe geiseri Arriaga-Varela, Tomaszewska, Szawaryn, Robertson, Seidel, Ślipiński & Fikáček, 2023, SP. NOV.
Creators: name: Arriaga-Varela, Emmanuel
name: Tomaszewska, Wioletta
name: Szawaryn, Karol
name: Robertson, James
name: Seidel, Matthias
name: Ślipiński, Adam
name: Fikáček, Martin
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Mycetaeidae
Karumbe
Karumbe geiseri

description: KARUMBE GEISERI ARRIAGA- VARELA, TOMASZEWSKA & SZAWARYN SP. NOV.
(FIGS 6C, D, 7F, I, L, 8A–C, 10A–F, 20A)
Zoobank registration: urn: lsid: zoobank. org:act: 57FC49EB-6890-4AF8-BB33-70F66B4D466C
Type material: Holotype, male, GRENADA: Balthasar (Windward side), Grenada, W.I., H. H. Smith (BMNH). Paratypes: Same data as for holotype (one male, one female and 1 ex., BMNH; 2 ex, MIZ).
Diagnosis: Karumbe geiseri is most similar to K. pakaluki, but it can be distinguished from the later by the wider prosternal process being about 0.90 of width of procoxa (Fig. 10B) (0.67 in K. pakaluki); pronotum with postero-lateral indentation shorter and more rectangular (Fig. 10C) (longer and more oblique in K. geiseri) and by the shape of the aedeagus. From K. brethesi it can be easily distinguished by having dorsal surface of the body covered with setiferous punctures and additional foveolate depressions (in K. brethesi peculiar punctations as in Fig. 9E), the central area of the metaventrite covered with simple setiferous punctures without wide foveate impressions (Fig. 10E), the pronotal disc only weakly concave along the internal lateral carina, and the terminal labial palpomere short and apically rounded, 1.4 times as long as wide (Fig. 10A) (in K. brethesi: elongate and acuminate, 2.2 times as long as wide at base).
Description: Body: length 0.90–0.96 mm, 1.25 times as long as wide, 2.0 times as long as high, short oval and moderately convex, brown with yellowish legs, antennae and palpi (Fig. 6C, D).
Antenna nearly 0.40 times as long as body; antennomeres 1–5 longer than wide; antennomeres 6–9 subquadrate. Apical labial palpomere short and rounded, 1.4 as long as wide (Fig. 10A).
Pronotum 2.2 times as wide as long, 1.85 times wider at widest part than on front angles (Fig. 10C). 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 deep, oblique. Prosternal process broad (Figs 7F, 10B), with apex about 0.90 of width of procoxal cavity, narrowest near half-length, weakly widened apically, with lateral carina raised, almost reaching anterior quarter of prosternum, central part between carinae depressed.
Elytra 0.67–0.76 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. 6C). Elytral dorsal surface covered with simple setiferous punctures and additional foveolate depressions without setae. Mesoventral process about 1.4 times as wide as mesocoxal diameter (Figs 7I, 10E). Metaventrite with fine setiferous punctures (Fig. 10E). Elytral lateral margins visible from above. Wings well developed.
Legs. Meso- and metatrochanters flattened, weakly roundly produced posteriorly (Fig. 10E, F).
Abdomen. Ventrite 1 with rounded postcoxal lines. Ventrite 5 with posterior margin straight in both sexes. Male genital segment as in Fig. 8A.
Male genitalia (Fig. 8B). Aedeagus with penis short and stout, sclerotized, narrow at base, widening distally with lateral ramus extending beyond. Tegmen throneshaped, short, submembranous, basal; tegminal strut short, reduced.
Femalegenitalia (Fig.8C). Ovipositorweaklysclerotized. Spermatheca moderately large, irregular-subcylindrical, submembranous; sperm duct short; accessory gland small membranous, of irregular-cordate shape.
Etymology: This species is dedicated to Michael Geiser, curator in the Natural History Museum, London, for kindly pointing out to us the existence of the specimens belonging to the species here described.
Distribution: Grenada (Fig. 20A).
description: Published as part of 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, pp. 1078-1115 in Zoological Journal of the Linnean Society 197 (4) on page 1100, DOI: 10.1093/zoolinnean/zlac082, http://zenodo.org/record/7814127