Mimogonia marquesi, Irmler, 2013

Irmler, Ulrich, 2013, New species of the genus Mimogonia and Holotrochus from South America (Coleoptera: Staphylindae: Osoriinae), Acta Entomologica Musei Nationalis Pragae 53 (1), pp. 155-176 : 157-159

Mimogonia marquesi sp. nov.

( Figs 1 , 16B )

Type locality. Brazil, Estado Mato Grosso, Pantanal .

Type material. HOLOTYPE:, ‘ Brazil, Est. Mato Grosso, Pantanal, sampled by Mini-Winkler method from soil, 18.12.2000 ’ ( UMFT) . PARATYPES: 2 ♀♀, ‘ Brazil, Mato Grosso, Poconé (56°40.215’W, 16°25.029’S), 03.2011, area 3, Proba 3, collected by Mini-Winkler’ ( UMFT, UIC) .

Diagnosis. According to the head/pronotum width ratio of 0.94, this species belongs to the M. unicolor group including the species M. adisi Irmler, 2007a , M. paraensis Irmler, 2010 , M. unicolor Irmler, 1981 and M. hanagarthi Irmler, 2007a . However, the aedeagus resembles that of M. elytrata regarding the outthrusted apical branch of the endophallus. The eyes in M. elytrata are much larger and more prominent than in M. marquezi sp. nov., the colouration is lighter, more light red and not brown as in M. marquezi sp. nov.

Description. Length: 1.9 mm. Colouration reddish brown; posterior margin of elytra black; legs and antennae slightly lighter reddish; clypeus yellow.

Head 0.27 mm long, 0.40 mm wide; eyes large, slightly prominent; temples only one fourth as long as eyes; setiferous punctation moderately dense; on average, interstices between punctures as wide as or slightly shorter than diameter of punctures; on supraocular area, punctation denser than on disc; microsculpture net-like, but only moderately deep; surface slightly shiny.

Antennae with second antennomere globular; third antennomere conical and slightly longer than second; fourth antennomere quadrate and not wider than third; following antennomeres increasing in width; penultimate antennomere nearly twice as wide as long.

Pronotum 0.32 mm long, 0.40 mm wide; in front of posterior emargination nearly parallel; only slightly narrowed to anterior angles; setiferous punctation deep and dense; on average, distance between punctures half as wide as diameter of punctures; net-like microsculpture more distinct and deeper than on head; surface matte.

Elytra 0.45 mm long, 0.46 mm wide; with similar setiferous punctation as on pronotum, but less dense; on average, distance between punctures as wide as diameter of punctures; net-like microsculpture still deeper than on pronotum; surface matte.

Mesotibia of male with short comb-like setation on inner apical diagonal edge.

Aedeagus large; with S-shaped apex; inner apical edge with long row of small short grooves; endophallus spiralled, with long apical branch emerging central lobe.

Etymology. The specific name refers to the collector of the species, my dear colleague Prof. Marinez Isaak Marquez who supervised the intensive investigation on the Pantanal soil fauna.

Distribution. Known only from the Pantanal region of Mato Grosso, Brazil.

Figures

Figs 1–3. 1 – Mimogonia marquezi sp. nov.; 2 – M. baloghi sp. nov.; 3 – M. duckei sp. nov. Body parts:A – aedeagus in lateral aspect; B – male mesotibia; C – antenna; D – last sternite. Scale bars:A, B, D – 0.1 mm, C – 0.5 mm.

Fig. 16. Head, pronotum, and elytra of Mimogonia Coiffait, 1978 showing shape, punctation and microsculpture. A – M. baloghi sp. nov.; B – M. marquesi sp. nov.; C – M. duckei sp. nov. Scale bars: 0.2 mm.