Pseudomicrocara obliquata (Solier, 1849) Solier, 1849

Libonatti, María Laura & Ruta, Rafał, 2013, Review of the Argentinean species of Pseudomicrocara Armstrong (Coleoptera: Scirtidae), Zootaxa 3718 (2), pp. 137-157 : 182

Pseudomicrocara obliquata (Solier, 1849) , comb. nov.

( Figs. 6, 7 , 21–23 , 32 , 90–95 )

Cyphon obliquatum Solier, 1849: 456 (type locality: provincias meridionales de Chile). Helodes obliquatus: Gemminger & von Harold 1869: 1618; Kolbe 1907: 71 (Southern Chile). Cyphon obliquatus: Pic 1914: 32 (checklist).

Cyphon obliquatum: Blackwelder 1944: 267 (checklist; Chile); Moroni 1985: 174 ( Chile, Southern Provinces).

Diagnosis. Habitus suboval, TL: 3.55–3.67 mm; EW: 2.16–2.24 mm. Pronotum rectangular, anterior margin not curved. Elytra brownish to black with yellowish maculation consisting of three maculae. Two of them form an oblique stripe starting behind humerus and extending posteriorly to half length of elytra (these maculae are often fused); third macula close to suture, in anterior 1/3 of elytra, suture yellowish. Mandibles asymmetrical, right mandible one-toothed, left mandible without teeth, with spines on molar region. Male terminalia: tergite 8 with a pair of sclerotized apodemes subparallel, posterior margin rounded, with setae; tergite 9 with a pair of sclerotized apodemes not connected by a sclerotized cross-piece, posterior margin rounded, with setae; sternite 8 V-shaped, anterior margin rounded, with setae near posterior margin; sternite 9 with posterior margin rounded, a pair of sclerotized apodemes widening posteriorly, with setae. Male genitalia: tegmen with basal margin emarginate, parameres broad at base, narrowing gradually to the middle, continuing very narrow to apex, apex acute, styli present; penis with basal piece relatively short and broad, basal margin emarginate and lateral margins converging posteriorly, trigonium triangular, apex very acute, apical half of trigonium with longitudinal row of minute spines, parameroids with margins approximately parallel, external margin with minute spines, apex obliquely truncate.

Type material: Holotype, not sexed (MNHN): Cyphon / obliquatum / Sol. / Chili [handwritten].

Additional specimens: Río Negro Province: Nahuel Huapi National Park, Lower Manso River, 1.xii.2008 – 14. i.2009, 2 exx., Malaise, leg. Analía Garré & Fernanda Montes de Oca (MLP).

Distribution. So far this species had only been known to occur in Chile. It is newly reported from Argentina.

Figures

FIGURES 1 – 8. Habitus illustrations of Argentinean species of Pseudomicrocara, dorsal view. 1) P. angusta sp. nov.; 2) P. antarctica; 3) P. hieroglyphica sp. nov.; 4) P. inflexipenis sp. nov.; 5) P. livida.; 6 – 7) P. obliquata; 8) P. patagonica. Scale bar = 1 mm.

FIGURES 16 – 26. Mandibles and labium of Pseudomicrocara. 16 – 18) P. inflexipenis sp. nov.; 19 – 20) P. livida; 21 – 23) P. obliquata; 24 – 26) P. patagonica.

FIGURES 27 – 33. Pronota of Pseudomicrocara. 27) P. angusta sp. nov.; 28) P. antarctica; 29) P. hieroglyphica sp. nov.; 30) P. inflexipenis sp. nov.; 31) P. livida; 32) P. obliquata; 33) P. patagonica.

FIGURES 90 – 95. Male terminalia and genitalia of P. obliquata. 90) Sternite 8; 91) sternite 9; 92) tergite 8; 93) tergite 9; 94) tegmen; 95) penis. Scale bar = 0.5 mm.