Calvariopsis, Ruta, 2019

Ruta, Rafał, 2019, Calvariopsis gen. nov., a new genus of Neotropical Scirtidae (Coleoptera: Scirtoidea), Zootaxa 4604 (1), pp. 1-41 : 39-40

Key to identification for males of Calvariopsis gen. nov.

Please note that Calvaropsis sculptipenne (Pic) , with only the female known, is not included in the key.

1. Sternite IX with paired apodemes ( Fig. 11D )........................................................ 2 (group I)

-. Sternite IX with a single apodeme ( Fig. 21C )....................................................... 9 (group II)

2. Basal half of penis distinctly wider than apical half ( Fig. 12A)................................ C. panamense sp. nov.

-. Basal portion of penis as wide as apical half ( Fig. 14A ) or less than basal 1/3 of penis is slightly wider than apical half (Figs 13A, 15A)...........................................................................................3

3. Penis moderately long, 6× longer than wide ( Figs 14A , 15A ), with subparallel or subtly sinuate lateral margins............4

-. Penis very long and narrow, more than 8–10× longer than wide ( Figs 11A , 13A ), widened in basal portion and narrowed in the middle...............................................................................................5

4. Penis with sinuate lateral margins, trigonium narrow, with subparallel sides ( Fig. 15A ), known only from Venezuela............................................................................................. C. pittieri sp. nov.

-. Penis with subparallel sides, trigonium wide, subtriangular ( Fig. 14A ), known only from Bolivia......... C. picta sp. nov.

5. TL 2.3 mm, median process of tergite VIII not flanked with deep emarginations (Fig. Fig. 11E ), known only from French Guiana........................................................................... C. fourgassiense sp. nov.

-. TL 2.5–3.6 mm, median process of tergite VIII flanked with deep emarginations ( Figs 9E , 13E , 17C , 18D), known from Andes

( Peru, Ecuador, Venezuela).............................................................................. 6 6. Median process of tergite VIII short, flanked by deep, semicircular emarginations ( Fig. 13E )........ C. peruviana sp. nov.

-. Median process of tergite VIII longer, flanked by shallow and wide emarginations ( Figs 9E , 17C , 18D)................. 7

7. Median process of tergite VIII wide, short, M-shaped, emarginations without denticles (Fig. 18D). C. yanayacuense sp. nov.

-. Median process of tergite VIII longer, emarginations covered with denticles........................................8

8. Body oblong oval, with rounded sides ( Fig. 1A ), TL/EW 1.6, known only from Ecuador............ C. borowieci sp. nov.

-. Body elongate, with subparallel sides ( Fig. 1L ), TL/EW 1.8, known only from Venezuela......... C. venezuelense sp. nov.

9. Last abdominal ventrite with paired tubercles ( Figs 3F , 20E )................................ C. bituberculata sp. nov.

-. Last abdominal ventrite without tubercles................................................................ 10

10. Tergite VIII without lateral spines, tegmen without basal apodemes ( Figs 25B , 26C )................................11

-. Tergite VIII with lateral spines, tegmen with paired basal apodemes ( Figs 20B , 21B , 22B , 23B ).......................12

11. Tegmen V-shaped ( Fig. 25B ), penis not curved in lateral view............................... C. saopaulense sp. nov.

-. Tegmen subrectangular ( Fig. 26C ), penis curved in lateral view ( Fig. 26A )......................... C. wittmeri sp. nov.

12. Tergite VIII with T-shaped emargination in central portion ( Fig. 23D )............................. C. kawense sp. nov.

-. Tergite VIII with V-shaped emargination in central portion ( Figs 21D , 22C , 24B )...................................13

13. Trigonium of penis shorter, reaching 1/4 of length of penis, penis with subparallel sides ( Fig. 21A ), emargination of central portion of tergite VIII deep ( Fig. 21D )...................................................... C. brasiliense (Pic)

-. Trigonium of penis relatively long, reaching 1/3 of length of penis, penis with curved sides ( Figs 22A , 24A ), emargination of central portion of tergite VIII shallow ( Figs 22C , 24B )....................................................... 14

14. TL 1.7 mm, known from Brazil............................................................. C. nana sp. nov.

-. TL 2.0 mm, known from Guiana........................................................ C. guyanense sp. nov.

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 3. Calvariopsis gen. nov., SEM images of morphological details, A–C) Calvariopsis yanayacuense sp. nov.; D–F) Calvariopsis bituberculata sp. nov. A, D) ventral portion; B, E) head and prosternum; C) mesoventrite, sphaerical cuticular structures are marked with an arrow; F) apical portion of ventrite 5.

FIGURE 9. Calvariopsis borowieci sp. nov., male. A) penis; B) apex of penis; C) tegmen; D) sternite IX; E) tergite VIII; F) tergite IX. Scale bar = 0.25 mm.

FIGURE 11. Calvariopsis fourgassiense sp. nov., male. A) penis; B) apex of penis; C) tegmen; D) sternite IX; E) tergite VIII; F) tergite IX. Scale bar = 0.25 mm.

FIGURE 13. Calvariopsis peruviana sp. nov., male. A) penis; B) apex of penis, lateral view; C) tegmen; D) sternite IX; E) tergite VIII; F) tergite IX; G) tergite VII. Scale bar = 0.25 mm.

FIGURE 14. Calvariopsis picta sp. nov., male.A) penis; B) tegmen; C) sternite IX; D) tergite VIII and sternite VIII; E) tergite IX; F) terminal segments and genitalia, not separated. Scale bar = 0.25 mm.

FIGURE 15. Calvariopsis pittieri sp. nov., male. A) penis; B) tegmen; C) sternite IX; D) tergite VIII; E) tergite IX. Scale bar = 0.25 mm.

FIGURE 17. Calvariopsis venezuelense sp. nov., male.A) penis; B) tegmen and sternite IX; C) tergite VIII; D) tergite IX. Scale bar = 0.25 mm.

FIGURE 20. Calvariopsis bituberculata sp. nov., male. A) penis; B) tegmen and sternite IX; C) tergite VIII; D) tergite IX; E) apex of abdomen. Scale bar = 0.25 mm.

FIGURE 21. Calvariopsis brasiliense (Pic), male, A–D), F)—specimen from NMPC; E)—holotype. A) penis; B) tegmen; C) sternite IX; D–E) tergite VIII; F) tergite IX. Scale bar = 0.25 mm.

FIGURE 22. Calvariopsis guyanense sp. nov., male. A) penis; B) tegmen and sternite IX; C) tergite VIII; D) tergite IX. Scale bar = 0.25 mm.

FIGURE 23. Calvariopsis kawense sp. nov., male. A) penis; B) tegmen; C) sternite IX; D) tergite VIII; E) tergite IX. Scale bar = 0.25 mm.

FIGURE 24. Calvariopsis nana sp. nov., male. A) penis; B) tergite VIII; C) tergite IX. Scale bar = 0.25 mm.

FIGURE 25. Calvariopsis saopaulense sp. nov., male.A) penis; B) tegmen and sternite IX; C) tergite VIII; D) tergite IX. Scale bar = 0.25 mm.

FIGURE 26. Calvariopsis wittmeri sp. nov., male. A) penis, lateral view; B) penis, dorsal view; C) tegmen; D) sternite IX; E) tergite VIII; F) tergite IX. Scale bar = 0.25 mm.