Dysanellus bruchi Bernhauer, 1911

(Figs. 1, 5, 11, 25)

Dysanellus bruchi Bernhauer 1911: 419 .

Type Material. Holotype, female, with labels: “Rep. Argentina, Prov. Buenos Aires, 11[xi].1896, C. Bruch ” / “ Trigonophorus bruchi n. sp. Fvl.” / “ Dysanellus bruchi Brh Typus” / “Chicago NHMus. M. Bernhauer Collection ”. In the collection of FMNH. A habitus photograph of the type appears in Chatzimanolis (2012).

Additional Material. ARGENTINA: Entre Rios: Pronunciamiento, ii.1975, Bolle (1 female CNC) ; Tucumán: 15 km N Tucumán, R´ıo Sali, 254m, 30.xii.1971, L. Herman (1 female, AMNH) ; Unknown province: O. W. Thomas, 1901-143 (1 female, BMNH) .

Diagnosis. Dysanellus bruchi can be easily distinguished from D. transverserugosus by the absence of rugose sculpture (Fig. 6) on the head and pronotum of D. bruchi .

Description. Body length 13.6–16.1 mm. Head, pronotum, and elytra metallic green-blue. Mouthparts, mesoscutellum, ventral surface of body, and legs brown; antennomeres 1–5 brown, 6–11 dark orange. Posterior margin of abdominal segment VII and segment VIII orange-brown. Head transverse, width:length ratio = 1.44; with posterolateral corners slightly expanded. Epicranium with dense polygonal microsculpture and micropunctures; with medium-sized punctures around margin of head and eyes and with few other scattered medium-sized punctures on middle of epicranium. Eyes mediumsized, length of eyes / length of head ratio = 0.53, distance between eyes as wide as 1.94 times length of eye. Mandibles without long medial tooth. Distal margin of labial palpomere 3 straight, not bend. Antennomeres 1–7, 11 longer than wide; antennomere 8–10 subquadrate. Neck with microsculpture and few micropunctures. Pronotum quadrate, width:length ratio = 1.02; surface of pronotum uniformly covered with dense polygonal microsculpture and micropunctures; appearing matte due to microsculpture. Pronotum with one well-defined row of medium-sized punctures adjacent to each side of impunctate center line; with additional 3 diagonal rows of punctures (on each side), rows starting on anterolateral corners; distance between punctures varies, typically 2–3 times width of puncture. Elytra with small to mediumsized uniform punctures (about 14–16 punctures / elytral width); distance between punctures equal to width of puncture. Elytra shiny; with sparse microsculpture. Abdominal terga III–IV with faint subbasal (arch-like) carina. Female without obvious sexual structures. Males unknown.

Distribution. Known from the provinces of Buenos Aires, Entre Rios, and Tucumán in Argentina.