Macrolygistopterus kirschi Pic 1931

Macrolygistopterus kirschi Pic, 1931

(Figs. 9, 18, 35, 45)

Macrolygistopterus kirschi Pic, 1931: 4 (original description); Kleine, 1933: 104 (catalogue); Blackwelder, 1945: 351 (catalogue).

Type material. Macrolygistopterus kirschi: syntype, female, Buenos Aires, Argentine, Kirsch col, 1878, hereby designated as lectotype, deposited at SGFN.

Diagnosis. A wide black stripe on pronotum with only lateral margins testaceous and elytral costae I and II apically fused, forming an arch; costae III subapically fused with the arch formed by costae I+II; costa IV following alone without touching the elytral apex (Fig. 35).

Redescription. Head black, with short rostrum, as long as 3x the median interocular distance of eyes (Fig. 18); median interocular distance of 3x the width of eyes. Mandibles short, slightly curved, testaceous, connates to labrum. Antennae black, scape subconic, pedicel small, ca. 1/4 the length of scape; antennomere III as long as sum of I+II; antennomere IV slightly longer and wider than III; antennomeres V to XI gradually decreasing in length.

Pronotum pentagonal, with rounded angles; with a wide black stripe on pronotum, with only lateral margins testaceous; a pair of longitudinal elevations parallels, broadened in middle third; a pair of oblique elevations starting from posterior angles and touching the broadened region in the middle third.

Elytra subparallel, lateral margins stout, testaceous, apical third blackened. Arrangement of elytral costae: elytral costae I and II apically fused, forming an arch; costae III subapically fused with the arch formed by costae I+II; costa IV following alone without touching the elytral apex (Fig. 35).

Width at humeri> 3.2mm. Elytral length—9.6mm.

Distribution. Buenos Aires, Argentine, only known by the lectotype (Fig. 45).

Examined material. Lectotype: ♂, Buenos Ayres Kirsch, [18]78, Kirschi n. sp., 1♂ (photography provided by SGFN).