Ronhuberia eurytarsipennis (W. Horn, 1905 )

Matalin, A. V. & Moravec, J., 2020, New records of the enigmatic species - Ronhuberia eurytarsipennis (W. Horn, 1905) (Coleoptera: Cicindelidae), Russian Entomological Journal 29 (1), pp. 33-37 : 34-37

Ronhuberia eurytarsipennis (W. Horn, 1905)

Figs 1–20 .

Odontochila eurytarsipennis W. Horn, 1905: 148 (type locality — Ucayali, Peru; see below).

Pentacomia (Pentacomia)? eurytarsipennis : Wiesner 1992: 83.

Ronhuberia eurytarsipennis : Moravec, Kudrna, 2000: 32–33 ( Fig. 2b ), 24 ( Fig. 3 ), 26 ( Figs 15–19 ).

non Pentacomia eurytarsipennis sensu Pearson et al., 1999 [nec Cassola, Pearson, 2001], which is Ronhuberia fernandezi ( Cassola, 2000) .

TYPE MATERIAL. Lectotype ♂ and paralectotype ♀ of Odontochila eurytarsipennis W. Horn, 1905 designated by Moravec [2020] (both SDEI) — come from Peruvian Amazonia, a long way from the localities of the newly collected adults, providing that the type locality name “ Ucayali, Peru ” stated by HORN [1905] and added in writing by hand on the printed label “Staudinger”, is correct [ Moravec, 2020].

ADDITIONAL MATERIAL: 1♀ — Peru, Pasco Department, Oxapampa Province, Pozuzo District , 5 km S Santa Rosa vill., h ~ 1560 m, 10°00´23´´S 75°27´36´´W, 5– 12.10.2017, leg. A. Sokolov ( MPU); 1♂ 1♀ — Peru, Pasco Department, Oxapampa Province, Pozuzo District , Santa Rosa vill., h ~ 1600 m, 13– 16.10.2017, leg. A. Petrov ( MPU) .

DIFFERENTIAL DIAGNOSIS. The two known species of Ronhuberia Moravec, Kudrna, 2002 are characterized by their elytral surface which is almost smooth and chatoyantcoloured posteriad of discal impression with widely diffusing, velvety black central zone that may change to iridescent gold-bronze (depending on light-angles). Ronhuberia fernandezi ( Cassola, 2000) , the type species of the genus, differs in a complex of diagnostic characters [ Moravec, Kudrna, 2002; Moravec, 2020], yet immediately in having immaculate elytra and an extremely coarse sculpture on the elytral base and pronotal surface.

New data about some morphological features as (Table) well as the basic measurements of newly recorded specimens of this extremely rare species are presented below. The coloration and measurements of the types are given after Moravec, Kudrna [2002]; it must be noted here that the type specimens are partly tarnished and faded as usual in very old specimens ( Figs 10–20 ).

DIMENSION. With the data on newly collected exemplars the sizes (mm) and proportions of all known specimens of R. eurytarsipennis are as follows (males/females): TL — 8.0/7.8–8.5; HW — 2.1–2.15/2.1–2.3; LL — 0.8/0.9–1.05; LW — 0.9/0.9–1.0; LL/LW — 0.89/1.0–1.11; PL — 1.5/ 1.4–1.6; PW — 1.25/1.1–1.25; PL / PW — 1.2–1.3/1.24– 1.28; EL — 4.9–5.0/4.8–5.2; EW — 2.2–2.3/2.2–2.4; EL/ EW — 2.13–2.27/2.17–2.18; SL — 0.2–0.25/0.2–0.25; AL — 1.97–2.2.

REMARKS. It is noteworthy that Wiesner [1992] catalogued R. eurytarsipennis (with a question mark) in a diagnostically very different genus Pentacomia Rivalier, 1969 . Similarly, R. fernandezi was originally described by Cassola [2000] as Pentacomia , despite its distinct characters of which he stressed the metallic coloured labrum only. Moravec, Kudrna [2002] thoroughly re-described and additionally illustrated these two species, and for their remarkable diagnostic characters, the authors transferred them to a separate genus Ronhuberia .

It must be noted here that the genus Pentacomia Bates, 1872 diagnostically differs from all other genera of the subtribe Odontocheilina W. Horn, 1899 sensu Moravec [2012] , including all genera which were originally described as subgenera of Pentacomia by Rivalier [1969], as demonstrated by Moravec [2018a –b, 2020]. The illustrations of the two type specimens of R. eurytarsipennis ( Figs 10–20 ) are the originals taken by the second author of this present paper, also published in Moravec, Kudrna [2002] and Moravec [2020].

Figures

Figs 1–9. Ronhuberia eurytarsipennis (specimens from Oxapampa province): 1 — habitus; 2–4 — labrum; 5–6 — pronotum; 7–8 — right elytron, 9 — aedeagus with internal sac, left view; 1–2, 5, 7, 9 — male; 3–4, 6, 8 — females. Рис. 1–9. Ronhuberia eurytarsipennis (ЭкЗемплЯры иЗ провинции Охапампа): 1 — габитус; 2–4 — верхнЯЯ губа; 5–6 — переднеспинка; 7–8 — правое надкрылье, 9 — Эдеагус с внутренним меШком, слева; 1–2, 5, 7, 9 — самец; 3–4, 6, 8 — самки.

Figs 10–20. Ronhuberia eurytarsipennis (type specimens of Odontochila eurytarsipennis, SDEI): 10–11 — habitus; 12 — head; 13–14 — labrum; 15–16 — pronotum; 17–18 — left elytron; 19 — detail of left elytral base; 20 — aedeagus with internal sac, left view; 10, 12–13, 15, 17, 19–20 — male, lectotype; 11, 14, 16, 18 — female, paralectotype. Scale bars: 1 mm [adapted from Moravec, 2020]. Рис. 10–20.Ronhuberia eurytarsipennis (типовые ЭкЗемплЯры Odontochila eurytarsipennis, SDEI):10–11 — габитус; 12 — голова; 13–14 — верхнЯЯ губа; 15–16 — переднеспинка; 17–18 — левое надкрылье; 19 — основание левого надкрыльЯ; 20 — Эдеагус с внутренним меШком, слева; 10, 12–13, 15, 17, 19–20 — самец, лектотип; 11, 14, 16, 18 — самка, паралектотип. МасШтаб: 1 мм [по Moravec, 2020].