Ora bruchi Pic, 1928

Libonatti, María Laura, 2015, A revision of the genus Ora Clark, 1865 (Coleoptera: Scirtidae) in Argentina (part II) — redescriptions, updated distributions and a key to species, Zootaxa 3985 (1), pp. 69-97 : 77-79

Ora bruchi Pic, 1928

( Figs. 6 , 52–57 )

Ora bruchi Pic, 1928: 8

Type material. Pic had two specimens upon which he based his description, one in MNHN and the other in BR. The specimen deposited in MNHM is hereby designated as lectotype in order to clarify assignment of this name with this species. Lectotype: 1 ♀ ( MNHN): “R EP ARGENTINA / Prov. Buenos Aires / 190 / C. Bruch” [white label, printed], “ Ora / Bruchi n sp” [brownish label, handwritten by Pic], “ LECTOTYPUS / Ora bruchi Pic, 1928 / des. M. L. Libonatti 2015” [red label, printed]. Paralectotype: 1 ♀ (BR): “R EP ARGENTINA / Prov. Buenos Aires / 190 / C. Bruch” [white label, printed], “ Typus ” [light blue label, handwritten], “ Ora / Bruchi / Pic” [white label, handwritten by Bruch], “ Ora / Bruchi n sp” [brownish label, handwritten by Pic], “ PARALECTOTYPUS / Ora bruchi Pic, 1928 / des. M. L. Libonatti 2015” [yellow label, printed].

Diagnosis. Body broadly oval, elytra yellow with small brown spots ( Fig. 6 ); anterior part of bursal sclerite trapezoidal, folded posteriorly, with three teeth and a non-sclerotized oval region near the rounded margin, middle part with a pair of anterior very long teeth and one small tooth posterior to these two ( Figs. 55–57 ). Prehensor membranous ( Fig. 54 ).

Redescription. Measurements. Females (n = 2): TL (4.14–4.38) [4.38] (mean 4.26) mm, PL (0.69–0.77) [0.77] (mean 0.73) mm, PW (1.71–1.99) [1.99] (mean 1.85) mm, EL (3.51–3.74) [3.74] (mean 3.63) mm, EW (2.73–3.07) [3.07] (mean 2.90) mm.

Habitus. Body broadly oval, strongly depressed, maximum width at the basal third of elytra, covered with brownish to yellowish, suberect setae ( Fig. 6 ).

Coloration. Head, pronotum and scutellar shield reddish testaceous, elytra yellow with small brown spots, antennae brownish yellow, the last antennomere darker; ventral surface testaceous, apex of posterior femora brownish.

Head. Wide, approximately 1.8x wider than interocular space, clypeal surface flat; punctation very fine, punctures widely separated by 3.0x diameter. Antennae filiform, approximate ratio of antennal segments: 1.2: 1.0: 1.0: 1.8: 1.8: 1.8: 1.8: 1.3: 1.5: 1.5: 1.8, L/W ratios of antennal segments: 1.4, 1.5, 2.0, 2.6, 2.6, 2.6, 2.6, 2.5, 2.3, 3.0, 3.7. Mandibles with obtuse apex.

Thorax. Pronotum approximately 2.6x wider than long, anterolateral angles sharply projecting anteriorly, lateral margins almost straight; punctation on pronotum and scutellar shield similar to that on head. Elytra very depressed anterolaterally, humerus well marked, lateral margins rounded; punctation composed of fine (somewhat coarser than that on head, pronotum and scutellar shield) punctures separated by 3x diameter, with intermixed coarser punctures 3x the size and separated by 4– 6 x diameter; the fine punctures bearing shorter and more horizontal setae, the coarse punctures bearing longer and more erect setae; elytra with a row of submarginal punctures parallel to elytral suture. Mesoventral process elongate, very thin, lateral margins strongly converging posteriorly, with acute apex. Approximate length ratio of metatarsomere 1: dorsal metatibial spur: ventral metatibial spur: 3.1: 2.3: 1.0.

Abdomen. Completely covered with short yellowish setae except for the glabrous posterior margin of the ventrite 1 and the pair of glabrous lateral regions on ventrites 2–5, with long yellowish setae on the posterior margin of ventrites 2–5, and some dark curved setae occuring on the lateral and posterior margins of ventrites 2–5 ( Fig. 52 ). Ventrite 5 with apex shallowly concave. Tergite 7 with long apodemes and posterior margin parabolic ( Fig. 53 ).

Male terminalia and genitalia. Male unknown.

Female genitalia. Anterior part of bursal sclerite trapezoidal, folded posteriorly, with three teeth (a pair of short lateral teeth and a median tooth, 2x longer than the pair of teeth) and a non-sclerotized oval region (resembling a hole) near the rounded margin; middle part with a pair of anterior very long teeth and one small tooth posterior to these two ( Figs. 55–57 ). Prehensor membranous ( Fig. 54 ).

Distribution. Argentina: Buenos Aires Province.

Remarks. See under Ora depressa .

Figures

FIGURES 1 – 12. Ora spp. from Argentina, habitus. 1 – 4, Ora atroapicalis Pic, 1928: 1, holotype, male; 2, male from PN Chaco; 3, female from Aguará Ñu (Paraguay); 4, detail of female elytral apex; 5, O. bivittata Pic, 1922, male from Chaco Province; 6, O. bruchi Pic, 1928, lectotype, female; 7 – 12, O. depressa (Fabricius, 1801): 7, male from PN Mburucuyá (Corrientes); 8, female from Corrientes; 9, female from PN Mburucuyá; 10, female from PN El Palmar (Entre Ríos); 11, female from Piquete (Santa fe); 12, female from Rosario (Santa Fe).

FIGURES 52 – 57. Ora bruchi Pic, female. 52 – 56, lectotype: 52, abdomen, ventral aspect; 53, tergite 7; 54, genital organs (except ovaries), dorsal aspect; 55, bursal sclerite, dorsolateral aspect; 56, bursal sclerite, anterolateral aspect; 57, paralectotype, bursal sclerite, anterior aspect. Abbreviations: bsa: bursa, bscl: bursal sclerite, bsl: bursella, gla: accessory gland, prh: prehensor.