Calvariopsis yanayacuense, Ruta, 2019

Ruta, Rafał, 2019, Calvariopsis gen. nov., a new genus of Neotropical Scirtidae (Coleoptera: Scirtoidea), Zootaxa 4604 (1), pp. 1-41 : 24-26

Calvariopsis yanayacuense sp. nov.

( Figs 1 M–O, 3A–C, 4A–C, 5A, 6, 18)

Type material. Holotype, male ( DBET): “ Ecuador 36, Napo prov., \ Cosanga + Yanayacu \ road, 2 XII 2009, \ leg. Rafał Ruta ” . Paratypes. 20 males ( DBET): “ ECUADOR \ road Yanayacu-Rio \ Aliso , 30 XI 2009 \ leg. Lech Borowiec ” . 15 males ( DBET): “ Ecuador 41, Napo prov., \ Cosanga vic., Antisana \ trail+ Yanayacu , 3 XII \ 2009, leg. Rafał Ruta ” . 10 males ( DBET): “ Ecuador 4, Napo prov., \ Cosanga + Yanayacu , \ collecting along the road, \ 25 XI 2009, leg. R. Ruta ” . 1 male ( DBET): “ Ecuador 76, Napo prov., \ Cosanga vic., Yanayacu \ Station , 2000–2200m, \ 00°35’S / 77°53’W, \ 15 XII 2009, \ leg. L. Borowiec ” . 2 males ( DBET): “ Ecuador 75, Napo prov., \ Cosanga vic., Yanayacu \ Station , 2000–2200m, \ 00°35’S / 77°53’W, \ 16 XII 2009, leg. R. Ruta ” . 5 males ( DBET): “ Ecuador 58, Napo prov., \ Cosanga vic., Yanayacu \ Station , stream trail, \ 2000–2200m, 00°35’S \ 77°53’W, 9 XII 2009, leg. \ Lech Borowiec” . 5 males ( DBET): “ Ecuador 1, Napo prov., \ Cosanga vic., Yanayacu \ Station , 2000–2200m, \ 00°35’S / 77°53’W, 23–24 \ XI 2009, leg. Rafał Ruta ” . 3 males ( DBET): “ Ecuador 42, Napo prov., \ Cosanga vic., Antisana \ trail, 3 XII 2009, \ leg. Rafał Ruta ” . 7 males ( DBET): “ ECUADOR, Napo prov. \ Cosanga vic., Yanayacu \ Station , 2000–2200m, \ 00°35’ S, 77°53’W, \ 23 XI–17 XII 2009, \ leg. L. Borowiec ” . 1 male ( DBET): “ Ecuador 52, Napo prov., \ Cosanga vic., Yanayacu \ Station , Bamboo hill trail \ & stream, 2125 m, \ S 00º36’18.4” / W \ 77º53’09.0”, 5 XII 2009, \ leg. Rafał Ruta ”. 7 males ( DBET): “ ECUADOR, Napo prov. \ Cosanga + Yanayacu \ collecting along the road \ 1900–2000m \ 25 XI 2009, leg. L. Borowiec ”. Male ( DBET): “ ECUADOR, Napo prov. \ Cosanga vic., Yanayacu St. \ - Rio Aliso road, 2000–2200m \ 00°35’S/77°53’W, 30 XI 2009, \ leg. L. Borowiec ”. Male ( SEMC): “ ECUADOR: Monona \ Santiago, 141 km E of \ Cuenca nr. rd. to Arenillas \ 2250 m, 3 Jan. 1992 \ C. Carlton, R. Leschen \ #104”. 2 females ( DBET): “ ECUADOR, Napo prov. \ Cosanga vic., Yanayacu \ Station , 2000–2200m, \ 00°35’ S, 77°53’W, \ 23 XI–17 XII 2009, \ leg. L. Borowiec ”. 2 females ( DBET): “ Ecuador 75, Napo prov., \ Cosanga vic., Yanayacu \ Station , 2000–2200m, \ 00°35’S / 77°53’W, \ 16 XII 2009, leg. R. Ruta ”. 8 females ( DBET): “ Ecuador 1, Napo prov., \ Cosanga vic., Yanayacu \ Station , 2000–2200m, \ 00°35’S / 77°53’W, 23–24 \ XI 2009, leg. Rafał Ruta ”. 6 females ( DBET): “ Ecuador 4, Napo prov., \ Cosanga + Yanayacu , \ collecting along the road, \ 25 XI 2009, leg. R. Ruta ”. 4 females ( DBET): “ Ecuador 41, Napo prov., \ Cosanga vic., Antisana \ trail+ Yanayacu , 3 XII \ 2009, leg. Rafał Ruta ”. 3 females ( DBET): “ ECUADOR \ road Yanayacu-Rio \ Aliso , 30 XI 2009 \ leg. Lech Borowiec ”. Female ( DBET): “ Ecuador 58, Napo prov., \ Cosanga vic., Yanayacu \ Station , stream trail, \ 2000–2200m, 00°35’S \ 77°53’W, 9 XII 2009, leg. \ Lech Borowiec”.

Diagnosis. The largest (TL 2.8–3.6) known species of Calvariopsis gen. nov., with dorsal pattern extremely variable, sometimes with contrasting orange spots. Penis is very long and narrow, apical plate of tergite VIII has relatively short median process with deep V-shaped notch (process is M-shaped), flanked with shallow emarginations which are not covered with denticles.

Description. Holotype, male. Body oval, convex, covered with brownish, suberect setae. Body black, apical portion of elytra with orange adsutural spot, antennae and mouthparts brownish, legs yellowish. Head broad, 1.6× wider than width of interocular space, with distinct but fine punctation, punctures small, not granulate, separated by a 2.0–4.0× diameter of a puncture, eyes moderately large, not protuberant. Pronotum transverse, widest at its base. Disc of pronotum with fine, not granulate punctation, punctures separated by ca. 2.0–3.0× diameter of a puncture. Posterior margin of pronotum subtly bisinuate. Anterior angles protruding anteriorly, subtriangular, posterior angles obtuse. Scutellar shield subtriangular, covered with subtle punctation. Elytra oblong, without traces of longitudinal ridges, widest before middle of their length, sides curved, regularly converging to apex in posterior 1/3. Humeri well marked. Punctation stronger than on pronotum, punctures elongate, distance between punctures ca. 0.5–1.0× diameter of a puncture.

Male genitalia. Penis (L 0.92 mm, W 0.09 mm, Fig. 18A) very long and narrow, widened in basal portion, para- meroids short, narrow, rounded at apices, curved, trigonium subtriangular, narrow, pointed at apex. Tegmen (L 0.72 mm, W 0.24 mm, Fig. 18B) very long, sides subparallel, apex with short lateral lobes, covered with setae. Sternite IX (L 0.38 mm, W 0.26 mm, Fig. 18C) subtriangular, with paired apodemes, apical margin rounded, apical portion covered with short, sparse setae. Tergite VIII (L 0.40 mm, W 0.41 mm, Fig. 18D) with short apical plate and two short and wide denticles forming M-shaped emargination in central portion of apical margin, apical margin subtly setose, apodemes distinctly longer than apical plate, diverging. Tergite IX (L 0.42 mm, W 0.31 mm, Fig. 18E) with membranous apical plate, apodemes as long as apical plate.

Variability. Dorsal pattern variable. The following colour patterns were noticed:

Female. Body ( Fig. 1P ) dark brown to black, sometimes with lighter, orange suture, TL (n = 5) 3.07–3.67 (3.39) mm. Apical portion of each elytron with two shallow concavities covered with hexagonal microsculpture ( Fig. 7F ), the one situated closer to suture is a bit smaller ( Figs 7 E–F). Gonocoxites ( Figs 10 E–F) broadly triangular, gonostyli subapical, bursal sclerite ( Figs 10 G–H, L 0.44 mm, W 0.10 mm) elongated, anterior portion wide, with digitiform outgrowth and rod-like posterior portion.

Measurements and ratios. Males (n = 10) TL 2.77–3.60 (3.18) mm, PL 0.50–0.70 (0.60) mm, PW 1.17–1.60 (1.33) mm, EL 2.50–3.20 (2.75) mm, EW 1.73–2.30 (2.00) mm, TL/EW 1.50–1.70 (1.59), PW/PL 2.20–2.30 (2.23), EL/EW 1.30–1.50 (1.38), EL/PL 4.30–5.00 (4.63).

Distribution. Known from several localities in Ecuador.

Etymology. Named after Yanayacu Biological Station (http://www.yanayacu.org/), where the type locality of the species is located.

Remarks. Numerous specimens were collected on trees densely covered with lichens, growing along the road near Yanayacu Biological Station, at the altitude of about 2200 m a.s.l. ( Figs 19 A–B).

Figures

FIGURE 1. Calvariopsis gen. nov., dorsal view. A) C. borowieci sp. nov., male; B) C. borowieci sp. nov., female; C) C. four- gassiense sp. nov., male; D) C. panamense sp. nov., male; E) C. peruviana sp. nov., Dept. Cusco, male; F) C. peruviana sp. nov., Callanga, male; G) C. peruviana sp. nov., Dept. Junín, male; H) C. picta sp. nov., Callanga, male; I) C. pittieri sp. nov., male; J) C. pittieri sp. nov., female; K) C. sculptipenne (Pic, 1931), female; L) C. venezuelense sp. nov., male; M–O) C. yanay- acuense sp. nov., males; P) C. yanayacuense sp. nov., female; Q) C. bituberculata sp. nov., male; R) C. brasiliense (Pic, 1916), male; S) C. brasiliense, female; T) C. guyanense sp. nov., male; U) C. kawense sp. nov., male; V) C. nana sp. nov., male; W) C. saopaulense sp. nov., male; X) C. wittmeri sp. nov., male; Y) C. sp., Bolivia, female. Scale bars = 1.0 mm.

FIGURE 7. Calvariopsis gen. nov., group I, females, apical portion of elytra, SEM images of excitators. A) C. borowieci sp. nov.; B) C. sp., Costa Rica; C–D) C. sculptipenne (Pic); E–F) C. yanayacuense sp. nov.

FIGURE 10. Calvariopsis gen. nov., female genitalia, ascl—anterior portion of bursal sclerite, bsa—bursa, bsl—bursella, gla—gland, oscl—outgrowth of bursal sclerite, pscl—posterior portion of bursal sclerite, scl—bursal sclerite. A–C) C. borowieci sp. nov.; D) C. pittieri sp. nov.; E–H) C. yanyacuense sp. nov.; I–K) C. brasiliense (Pic), specimen from Sao Paulo; L–M) C. brasiliense (Pic), specimen from Santo Amaro. A, D, E, L) genital tract; B, C, G, H, M) bursal sclerite; F, K) gonocoxites; I) sternite VIII; J) ovipositor.

FIGURE 19. Calvariopsis yanayacuense sp. nov., habitat. A) Ecuador, prov. Napo, road from Yanayacu Biological Station to Rio Aliso, sideroad; B) tree trunk covered with lichens and mosses, where C. yanayacuense was collected in great numbers.