Byrsopolis ferrandi Soula, 2010a

Medeiros, Rone A. F., Seidel, Matthias & Grossi, Paschoal C., 2022, Revision of the genus Byrsopolis Burmeister, 1844 (Coleoptera: Melolonthidae: Rutelinae: Rutelini), with the description of six new species endemic to Brazil and Paraguay, Journal of Natural History (J. Nat. Hist.) 56 (29 - 32), pp. 1315-1364 : 1354-1359

Byrsopolis ferrandi Soula, 2010a ( Figures 16 (i–j), 18(a–h))

Byrsopolis ferrandi Soula 2010a: 45 (original description); Carvalho and Grossi 2018: 372 (checklist, distribution); Hielkema and Hielkema 2019: 127 (checklist, distribution); Vaz-deMello and Grossi 2022 (online catalogue).

Type locality. Bélizon, French Guiana.

Type material. Holotype male, dissected. (a) ‘ Holotype / Byrsopolis / ferrandi S./2010 Soula’ [red label, handscript by Soula], (b) ‘Mussé des Confluences/MHNL/47030014’, (c) ‘Piste de/Belizon/I.94 G.F./col. SOULA’ [handwritten by Soula], (1♂ CCECL, specimen examined through images) ( Figures 16 (i–m).

Additional material. [ 4 specimens] ‘ FRENCH GUIANA: Mont Itoupé /(sommet 830 m), Maripa-Soula,/sommet (830 m), N 03°01 ʹ 19 ’, W 53°05 ʹ 03” // ‘L. T: light trap,/ 13.i.2016 ’ // ‘ Byrsopolis ferrandi /Soula, 2010/det. M. Seidel 2021’ // ‘ WORLD/SCARAB./DATABASE/ WSD00347520’ (1♂ MSPC); same, except ‘L. T: light trap,/ 16.i.2016 ’ // ‘WORLD/SCARAB./ DATABASE/WSD00347521’ (1♂ MSPC); same, except ‘WORLD/SCARAB ./ DATABASE/ WSD003475213’ (1♂ MSPC); same, except ‘ 16.i.2016 , PVP:/automatic light trap/(pink)’ // ‘WORLD/SCARAB./ DATABASE/WSD00347522’ (1♂ MSPC) .

Diagnosis. Body light yellow to reddish-brown, without metallic green reflections; clypeus subrectangular with weakly rounded apex; antennal club about 1.70x longer than antennomeres II–VII combined; scutellar shield subtriangular, base broadly rounded; elytral apex with right angles; elytra almost smooth, humeri weakly punctate; protibial spur about 2x longer than wide; parameres symmetrical, moderately divergent; parameres with weak sinuosities, proximal margin without strong emarginations.

Description of holotype. Body. Shape elongate oval; light yellow on elytra to reddishbrown ( Figures 16 (i), 18(a-c)); without green metallic reflections; frontoclypeal suture reddish-brown to black; yellow to orange setae on scutellar shield. Lectotype. Length 27.00–28.00mm. Humeral width 17.00–22.00. Elytral width 14.00–17.00 mm. Head. Clypeus about twice wider than long; subrectangular with weakly rounded apex; weakly concave only at marginal areas; punctures small to moderately large, densely punctate; frontoclypeal suture with curvilinear extremities weakly rounded, with obtuse angles; frons about 1.41x longer than clypeus; punctures small to moderately large, sparsely punctate at base, densely punctate at apex; glabrous; mandibles with apex weakly rounded external border, without setae, scissorial region weakly rounded, with one small tooth at middle ( Figure 18 (e)); galea with one moderate apical tooth, three small setae, a single seta at middle, two setae at anterior part ( Figure 18 (f)); apex prementum strongly emarginated; last labial palpomere about 2.18x longer than palpomere II ( Figure 18 (g)); labrum moderately emarginate, moderately setose ( Figure 18 (h)); antennomere III subcylindrical, IV–V subquadrate, antennomeres VI–VII subconical; antennal club about 1.70x longer than antennomeres II–VII combined. Thorax. Pronotum transverse, about 1.73x wider than long ( Figure 18 (a)); punctures small to moderate, moderately punctate at disc, densely punctate at marginal areas; a small, anterior concavity on each side near marginal areas; scutellar plate subtriangular, base moderately rounded ( Figure 18 (a)); small setae on apex, sparsely distributed; punctures small to moderate, sparsely punctate at marginal areas, moderately punctate at disc surface. Elytra. About 1.12x longer than wide; punctures small to moderate, moderately punctate at disc, densely punctate at marginal areas; interstriae indistinct ( Figure 18 (a)); elytral apex with right angles; humeri with microsetae, moderately distributed. Legs. Protibial spur about 2.80x longer than wide; mesotibiae and metatibiae with one carina. Aedeagus. Parameres with apex rounded, weakly sinuous, moderately divergent, symmetrical; acute angle between parameres; parameres wide and flat ( Figures 16 (j–l), 18(d)); lateral margins excavated at base forming a small carina; basal margin with weak sinuosities, basal margin without strong emarginations; longitudinal midline concave at apex; glabrous.

Female. Unkown.

Variation. Humeral width 12.50–13.00 mm. Elytral width 16.00–17.00 mm.

Etymology. The specific epithet is a atribute to Michel Ferrand, given by Soula.

Distribution. Byrsopolis ferrandi was described from Bélizon (Cayenne, French Guiana).

Remarks. Byrsopolis ferrandi and B. aenescens can be found in French Guiana, but there are localities within cities bordering Brazil – for example, Oiapoque.

Key to the genera of Areodina (modified from Grossi and Vaz-de-Mello (2015) after Jameson (1990))

10(4). Frontoclypeal suture almost straight or sinuous; clypeus broadest at base, apex rounded, trapezoidal, rectangular, semioval or squared; surface weakly to moderately concave; hind wings with anterior margin near RA1+2, RA3 and apical hinge glabrous ................................................................................................ Byrsopolis Burmeister 10’. Frontoclypeal suture rounded or arched; clypeus broadest at middle, apex quadrate; surface moderately to strongly concave; hind wings with anterior margin near RA1+2, RA3, and apical hinge setose ................ Moronius Grossi and Vaz-de-Mello

Key of the South American Areodina

1 Mesoventral process moderate to long (exceeding the apex of mesocoxae); parameres strongly asymmetric .............................................................................................................. 2

- Mesoventral process short (not exceeding the apex of mesocoxae); parameres symmetric or weakly to moderately asymmetric ............................................................................ 3

2 Apex of clypeus weakly rounded (males); parameres with hook-like projection ............. ......................................................................................................................... Areoda MacLeay, 1819

- Apex of clypeus trilobed (males); parameres without hook-like projection ....................... ............................................................................................................. Oplognathus MacLeay, 1819

3 Clypeus weakly to moderately concave; parameres weakly asymmetrical ......................... .............................................................................................................. Byrsopolis Burmeister 1844

- Clypeus strongly concave; parameres symmetrical ...................................................................... .................................................................................. Moronius Grossi and Vaz-de-Mello 2015 .

Identification key for adults of the Byrsopolis species Burmeister

1. Species from Cerrado and Atlantic Forest ( castanea , crassa and quadraticeps groups). ..................................................................................................................................................... 2

- Species from Amazon (unknown females) [ aenescens group] ......................................... 12

2. Elytral surface rugostriate, with weak to strong striae, deep punctures (males and females) [ castanea group] ................................................................................................................. 3

- Elytral surface punctatostriate to shallowly punctate (unknown females) [ crassa and quadraticeps groups]............................................................................................................................ 8

3. Clypeus subrectangular with apex emargination; general colour usually dark brown......................................................................................................................................................... 4

- Clypeus subrectangular, subtrapezoidal, parabolic, without apex emargination; general colour usually light brown or metallic green .................................................................. 5

4. Scutellar plate with sparse to moderate setation (males and females); parameres weakly to moderately divergent; parameres with basal margin rounded .......................... .......................................................................................... Byrsopolis castanea Burmeister 1844

- Scutellar plate with moderate to dense setation (males and females); parameres strongly divergent; parameres with basal margin weakly bisinuate ..................................... ............................. Byrsopolis burmeisteri Medeiros, Seidel and Grossi, 2020 sp. nov.

5. Elytral suture with strong striae and coalescent punctures; antennal club less than 2x longer than antennomeres II–VII combined ............................................................................. 6

- Elytral suture with indistinct striae and coalescent punctures; antennal club about 2x longer than antennomeres II–VII combined .. Byrsopolis laticollis Burmeister 1855

6. Frontoclypeal suture bisinuate; pronotum and scutellar shield weakly punctate (males known) ..................................................................................................................................................... 7

- Frontoclypeal suture almost straight; pronotum and scutellar shield strongly punctate (males unknown).............................................................. Byrsopolis cribricollis Ohaus 1912

7. Clypeus about 1.75x wider than long; labrum weakly emarginate; elytral apex with divergent angles; wide parameres (females unknown) .............................................................. ....................................... Byrsopolis ohausi Medeiros, Seidel and Grossi, 2020 sp. nov.

- Clypeus about 2.2x wider than long; labrum moderately emarginat;; elytral apex truncate; narrow parameres (females unknown) .......................................................................... .............................. Byrsopolis blanchardi Medeiros, Seidel and Grossi, 2020 sp. nov.

8. Clypeus subrectangular, weakly bilobed or trilobed, hirsute; parameres separated by a U-shaped gap, symmetrical, parallel to slightly convergent [ quadraticeps group] 9

- Clypeus semioval, rounded, sparsely setose or glabrous; parameres separated by a Vshaped gap, dorsally symmetrical to slightly asymmetrical, parameres moderately divergent [ crassa group] .................................................................................................................. 11

9. Metallic green on most parts of the body; clypeus weakly trilobed; antennal club about 3x longer than antennomeres II–VII combined (females unknown)........................ ................................... Byrsopolis schmidti Medeiros, Seidel and Grossi, 2020 sp. nov.

- Yellowish to reddish brown on almost the whole body; clypeus weakly to moderately bilobed; antennal club about 2.60x longer than antennomeres II–VII combined .. 10

10. Frontoclypeal suture almost straight between curvilinear extremities; pronotum glabrous; parameres with lateral margins moderately excavated longitudinally, forming a moderate carina at base (females unknown) ...................................................................... ................................................................................... Byrsopolis quadraticeps Blanchard 1851

- Frontoclypeal suture with a slight V-shaped concavity between curvilinear extremities; pronotum with short setae, sparsely to moderately distributed; parameres with lateral margins weakly excavated longitudinally, forming a short carina at the base of parameres. (females unknown) ............................................................................................................ .......................... Byrsopolis angeloottatii Medeiros, Seidel and Grossi, 2020 sp. nov.

11. Mandibles glabrous or hirsute in the angle formed by external border and scissorial region, wide longitudinally; labrum moderately emarginated; parameres with transverse striae in middle region. (females unknown) Byrsopolis crassa Blanchard 1851

Mandibles glabrous, without projections; narrow longitudinally; labrum strongly emarginated; parameres without transverse striae in middle region (females unknown).... .... Byrsopolis vazdemelloi Medeiros, Seideland Grossi, 2020 sp. nov.

12. Apex prementum with triangular lobes; labrum moderately emarginate; scutellar shield with apex weakly rounded; elytral apexes with divergent angles ........................... ................................................................................................. Byrsopolis aenescens Ohaus 1926

- Apex of prementum with rounded lobes; labrum weakly emarginate; scutellar shield with apex broadly rounded; elytral apexes with right angles .................................................. ...................................................................................................... Byrsopolis ferrandi Soula 2010a

Figures

Figure 16. Byrsopolis spp. Dorsal habitus of Byrsopolis aenescens, Ohaus,holotype (a), dorsal and lateral view of aedeagus (b–c), and labels attached (d); dorsal habitus of Byrsopolis chassini Soula, holotype (e), dorsal and lateral view of aedeagus (f–g), and labels attached (h); dorsal habitus of Byrsopolis ferrandi Soula, holotype (i), dorsal and lateral view of aedeagus (j–l), and labels attached (m). Images from Olivier Garcin and Cédric Audibert (e–m).

Figure 18. Byrsopolis ferrandi Soula, 2010, French Guiana. Dorsal (a), lateral (b), and ventral habitus (c); caudal view of aedeagus (d); dorsal view left mandible (e); ventral view of right maxilla (f); ventral view of mentum (g); and dorsal view of labrum (h). Scale bars: a–c = 5 mm; d–h = 1 mm.