Contacyphon tristis (Gemminger, 1869)

Ruta, Rafał, 2020, An overview of Scirtidae (Coleoptera) described by Antoine Joseph Jean Solier (1792 - 1851), Zootaxa 4767 (4), pp. 563-577 : 571-572

publication ID	https://doi.org/10.11646/zootaxa.4767.4.6
publication LSID	urn:lsid:zoobank.org:pub:8C90FD99-8277-4728-A22B-3B9345C042C7
DOI	https://doi.org/10.5281/zenodo.3796649
persistent identifier	https://treatment.plazi.org/id/617AC412-FFB7-5E1D-FF4B-FE082F8F62DD
treatment provided by	Plazi (2020-04-29 06:42:40, last updated 2024-11-29 16:06:23)
scientific name	Contacyphon tristis (Gemminger, 1869)
status

Treatment

( Figs 2E View FIGURE 2 , 3E View FIGURE 3 , 9 View FIGURE 9 )

Cyphon obscurum Solier, 1849: 458 (terra typica: Illapel, Santa Rosa)

Helodes tristis Gemminger, 1869: 125 (new substitute name)

Helodes tristis Gemminger : Gemminger & von Harold 1869: 1620

Cyphon tristis: Pic 1914: 36 (checklist; Chile)

Cyphon triste: Blackwelder 1944: 267 (checklist; Chile); Moroni 1985: 174 ( Chile, prov. de Coquimbo, Illapel; prov. de Aconcagua, Los Andes)

Contacyphon tristis: Zwick et al. 2013: 347

Type material of Contacyphon obscurum . Lectotype (present designation), “ Cyphon \ obscurum Sol \ Chili ” [handwritten with brown ink, probably by Solier]; “9 \ 45” [handwritten on a green, round label]. The specimen is covered with mould, but otherwise well preserved.

Description. Male, body oval, TL = 3.8 mm. Head brown, pronotum orange, scutellar shield and adscutel- lar portions of elytra orange, posterior and lateral portions of elytra brownish, antennae and mouthparts orange, legs brown. Punctures on elytra separated by ca. 0.7–1.0 diameter of a puncture. Anterolateral angles of pronotum slightly projecting anteriorly, posterolateral angles obtuse. Penis (L 0.77 mm, W 0.43 mm) symmetrical, with wide basal portion, short and wide trigonium, and two parameroids, each parameroid with paired hooks in basal 1/3, apical 2/3 very narrow, rod-like; tegmen (L 0.58 mm, W 0.55 mm) with very narrow parameres, each paramere with lateral spine which is almost half as long as paramere, apical portions of parameres slightly widened, apices pointed; tergite VIII (L 0.55 mm, W 0.49 mm) with subrectangular apical plate, densely covered with setae, apical margin with numerous dense, short setae forming a comb-like structure and much sparser longer setae, apodemes as long as apical plate; tergite IX (L 0.49 mm, W 0.40 mm) narrower than tergite VIII, apical portion membranous, setation absent, apodemes slightly diverging basally; sternite VIII absent; sternite IX (L 0.29 mm, W 0.30 mm) consisting of two elongate oval hemisternites, with short and sparse setae at apices.

Remarks. Two localities are listed in the original description ( Solier 1849), therefore Solier examined more than a single specimen of this species. 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.

References

Blackwelder, R. E. (1944) Checklist of the coleopterous insects of Mexico, Central America, the West Indies, and South America. Bulletin of the United States National Museum, 185 (2), 266 - 268. https: // doi. org / 10.5479 / si. 03629236.185.2

Gemminger, M. & von Harold, E. (1869) Familia XLI. Dascillidae. In: Gemminger, M. & von Harold, E. (Eds.), Catalogus coleopterorum hucusque descriptorum synonymicus et systematicus. Tom. 6. Rhipidoceridae, Dascillidae, Malacodermidae, Cleridae, Lymexylonidae, Cupesidae, Ptinidae, Bostrychidae, Cioidae. Monachii, sumptu E. H. Gummi, Paris, pp. 1613 - 1625. https: // doi. org / 10.5962 / bhl. title. 9089

Moroni, J. C. (1985) Addenda y corrigenda al elenco sistematico, sinonimico y distribucion de coleopteros acuaticos chilenos. Revista chilena de entomologia, 12, 169 - 176.

Pic, M. (1914) Dascillidae, Helodidae, Eucinetidae. In: Junk, W. & Schenkling, S. (Eds.), Coleopterorum Catalogus, 10 (58), pp. 1 - 65.

Solier, A. J. J. (1849) Cyphonoideos. In: Gay, C. (Ed.), Historia fisica y politica de Chile segun documentos adquiridos en esta republica durante doce anos de residencia en ella y publicada bajo los auspicios del supremo gobierno. Zoologia. Tom. 4. Insectos. Orden III. Coleopteros. Chile, en el Museo de historia natural de Santiago, En casa del autor, Paris, pp. 454 - 461.

Zwick, P., Klausnitzer, B. & Ruta, R. (2013) Contacyphon Gozis, 1886 removed from synonymy (Coleoptera: Scirtidae) to accommodate species so far combined with the invalid name, Cyphon Paykull, 1799. Entomologische Blatter und Coleoptera, 109, 337 - 353.

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 9. Contacyphon tristis (Gemminger, 1869), lectotype, male genitalia. A) penis; B) tegmen; C) tergite VIII; D) tergite IX; E) sternite IX. Scale bar = 0.25 mm.