Rhytidognathus ovalis
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Ordo: Coleoptera
Familia: Carabidae
Genus: Rhytidognathus
Name
Rhytidognathus ovalis (Dejean, 1831) – Wikispecies link – Pensoft Profile
- Nebria ovalis Dejean, 1831: 581.
- Rhytidognathus ovalis: Chaudoir 1861[1].
Material
Male and female,Cerro Colorado Uruguay, Florida(MLP); male Banda Oriental (IADIZA).
Diagnosis
Head with deep punctures in front, as well as at the base and apex of pronotum; elytra black, concolor; labrum concolor; legs black or dark red, tarsi reddish; apex of median lobe rounded.
Description
Body shape oval. Length: 12–13 mm; coloration: black; with antennae light colored, reddish, and legs testaceous or dark reddish. Elytra black, concolor.
Head.Head with deep punctures in front, eyes slightly protruding, sub-quadrangular. Maxillary palpi black or dark red.
Prothorax. Wider than long, maximum width at middle (Fig. 2); dorsal surface with deep punctures at base and apex (Fig. 2); lateral margins narrow, curved; central longitudinal sulcus slightly developed; posterior transverse foveae impressed, with deep punctures (Fig. 2); prosternum with punctures; prosternal apophysis prolonged into a carina, which extends straight toward the dorsal region (Fig. 3).
Pterothorax:Elytra. Humeral angles rounded (Fig. 4); striae well impressed, and deeply foveate on basal third (Fig. 4), being less marked toward the apex; six to seven setae only in the ninth interval.
Male genitalia(Figs 10–12). Median lobe wide, with apex rounded (Figs 10-12), apical orifice small, opening laterally to the right with a sclerified plate. Basal orifice wide, closed dorsally (Fig. 10), without basal keel. Left paramere wide with apex rounded (Fig. 11), with setae on apical third (Fig. 11). Right paramere straight and thin, the same width all along its length, with several setae from middle to apex (Fig. 11).
Female genital track(Fig. 13). With gonopod VIII small. Gonopod IX dimerous, the base with two sclerified plates, the apex small and without setae, with subapical setose organ (Fig. 13). Bursa copulatrix big, without accessory glands. Spermatheca on the base of oviduct, digitiform. Bursa copulatrix with a well developed sclerite.
Intraspecific variation. Jeannel (1938)[2] found some intraspecific variation in the intensity of basal punctures of the pronotum and also in the coloration of the legs.
Distribution
Uruguay: Montevideo: Montevideo (Chaudoir 1861[1]). Florida: Cerro Colorado (MLP).
Taxon Treatment
- Roig-Juñent, S; Rouaux, J; 2012: A new species of Rhytidognathus (Carabidae, Migadopini) from Argentina ZooKeys, 247: 45-60. doi
Other References
- ↑ 1.0 1.1 Chaudoir N (1861) Materiaux pour servir a l’etude des Cicindeletes et des carabiques. Bulletin Societé Imperial des Naturaliste de Moscou 34: 491-576.
- ↑ Jeannel R (1938) Les Migadopides (Coleoptera, Adephaga), une lignee subantarctique. Revue Française d´ Entomologie 5 (1): 1-55.
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