Contacyphon parvus ( Solier, 1849 )

Ruta, Rafał, 2020, An overview of Scirtidae (Coleoptera) described by Antoine Joseph Jean Solier (1792 - 1851), Zootaxa 4767 (4), pp. 563-577 : 569

Contacyphon parvus ( Solier, 1849)

( Figs 2C , 3C , 7 )

Cyphon parvum Solier, 1849: 457 (locus typicus: Santa Rosa)

Helodes parvus Solier : Gemminger & von Harold 1869: 1619

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

Cyphon parvus: Pic 1914: 34 (checklist; Chile)

Contacyphon parvus ( Solier, 1849) : Zwick et al. 2013: 345

Type material. Lectotype (present designation), “ Cyphon \ parvum Sol. \ Chili ” [handwritten with brown ink, prob- ably by Solier]; “9 \ 45: [handwritten on a green, round label]. The specimen is relatively well preserved but ventral portion is slightly damaged, and only anterior legs are preserved.

Description. Female, TL = 3.5 mm. Body uniformly light yellow. Punctures on elytra separated by ca. 0.5 di- ameter of a puncture. Anterolateral angles of pronotum slightly projecting anteriorly, posterolateral angles obtuse. Ovipositor with long apodemes and membranous coxites, coxites with styli; prehensor absent, only some invaginations (L 0.17 mm, W 0.13 mm) of membrane can be noticed in vagina ( Fig. 7A ); sclerotized structure (diameter ca. 0.35 mm) present at base of accessory gland.

Remarks. The species is pollinophagous, as numerous pollen grains are preserved in intestines ( Fig. 7A ). A similar sclerotization of basal portion of accessory gland was described in Ypsiloncyphon Klausnitzer ( Zwick 2016) and named dictyon. 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.

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 7. Contacyphon parvus (Solier, 1849), lectotype, female genitalia. A) genital tract, scale bar = 1.0 mm; B) genital tract, close-up, scale bar = 0.25 mm. Abbreviations: ag—accessory gland, pg—pollen grains, scl—sclerite, vi—vaginal invagi- nations.