Elodes rousseli Solier, 1849

Ruta, Rafał, 2020, An overview of Scirtidae (Coleoptera) described by Antoine Joseph Jean Solier (1792 - 1851), Zootaxa 4767 (4), pp. 563-577 : 572

Elodes rousseli Solier, 1849

( Figs 2F , 3F , 10 )

Elodes Rousselii Solier, 1849: 460 (locus typicus: Calbuco)

Helodes Rousseli Solier : Gemminger & von Harold 1869: 1619

Elodes rousseli: Pic 1914: 26 (checklist; Chile); Blackwelder 1944: 266 (checklist; Chile); Moroni 1985: 173 ( Chile, prov. Llanquihue, Calbuco)

Type material. Lectotype (present designation), “ Elodes \ rousseli Sol \ Calbuco” [handwritten with brown ink, probably by Solier]; “dans les broussailles, \ sur les arbres - \ contrefaît très bien \ le mort en applicant \ et tête et pattes sur le \ ventre. \ Calbuco. Mauldler” [handwritten with brown ink, probably by Solier]; “9 \ 45” [handwrit- ten on a green, round label]. The specimen is missing head and pronotum, and lateral portion of its right elytron is damaged.

Description. EL = 9.7 mm. Elytra with subparallel lateral sides, with 3 longitudinal carinae (costulae of Libonatti & Ruta 2003), covered with relatively long yellow setae that form peculiar patchy pattern. Penis (L 1.54 mm, W 0.57 mm) with oblong oval pala, parameroids with subparallel sides, outer margins of apical portions subtly serrate, trigonium divided into two long and thin rod-like processes, ca. 0.7 × as long as parameroids; tegmen (L 1.75 mm, W 0.94 mm) massive, parameres wide at bases, gradually narrowing toward apices, outer margins subtly serrate, inner margins of apical portions with minute setae, apices pointed; tergite VIII (L 1.44 mm, W 1.12 mm) with subrectangular apical plate, covered with setae, apical margin with short setae, apodemes shorter than apical plate; tergite IX (L 1.15 mm, W 0.87 mm) membranous, without setation, apodemes short, distinctly shorter than apical plate; sternite VIII (L 0.75 mm, W 0.78 mm) u-shaped, with sparse and short setae on apical margin; sternite IX (L 0.80 mm, W 0.92 mm) consisting of two subtriangular hemisternites, covered with distinct setae on apical portion.

Remarks. The original description includes no information on the number of specimens examined by Solier. A lectotype is designated in order to preserve the stability of nomenclature by selecting one specimen as the sole, name-bearing type of the taxon. The species belongs to an undescribed genus (Ruta in litt.). The additional label gives information on behavior of the species (“on the shrub, on the trees, it imitates very well the death by applying the head and the legs alongside the abdomen”), which was included in the note supplementing the original descrip- tion ( Solier 1849).

Figures

FIGURE 2. Historical labels of Scirtidae specimens from the collection of A. Solier (A–I), and specimens collected by C. Gay (J–K). A) Contacyphon luteolineatus; B) Contacyphon maculicornis; C) Contacyphon parvus; D) Contacyphon testaceus; E) Contacyphon tristis; F) Elodes rousseli; G) Pseudomicrocara lunata; H) Pseudomicrocara obliquata; I) Pseudomicrocara tor- quata; J) an unidentified specimen; K) Contacyphon maculatus.

FIGURE 3. Lectotypes of species described by A. Solier, general view. A) Contacyphon luteolineatus (Solier, 1849); B) Con- tacyphon maculicornis (Solier, 1849); C) Contacyphon parvus (Solier, 1849); D) Contacyphon testaceus (Solier, 1849); E) Contacyphon tristis (Gemminger, 1869); F) Elodes rousseli Solier, 1849; G) Pseudomicrocara lunata (Solier, 1849); H) Pseudomicrocara obliquata (Solier, 1849); I) Pseudomicrocara torquata (Gemminger, 1869). Scale bars = 1.0 mm.

FIGURE 10. Elodes rousseli Solier, 1849, lectotype, male genitalia. Scale bar = 0.5 mm.