Pygodiscodon touroulti Constantin, 2010

Biffi, Gabriel & Constantin, Robert, 2018, Taxonomic revision of Pygodiscodon (Coleoptera: Cantharidae), Acta Entomologica Musei Nationalis Pragae 58 (1), pp. 77-90 : 88-89

Pygodiscodon touroulti Constantin, 2010

( Figs 6 , 12 , 32–34 , 40 , 56–58 )

Pygodiscodon touroulti Constantin 2010b: 12 (original description). CONSTANTIN (2017): 64 (key).

Type locality. French Guiana, Regina, Réserve naturelle des Nouragues, camp de Saut Pararé.

Type material examined. HOLOTYPE:, ‘ Guyane, [Régina] station [scientifique des] Nourages | Saut Pararé | 4°01 ′ N, 52°41 ′ W, 120m | 18.VII.2009, piège lum.[ineux] | P.H. Dalens, S. Brûlé, J. Touroult’ ( MNHN). PARATYPES: ‘ Guyane, station Nourages | saut Pararé | 4º01 ′ N, 52º41 ′ W, 120m | 17.VII.2009, piège lum. | P. Dalens, S. Brûlé, Touroult || PARATYPE | Pygodiscodon | touroulti | Constantin n. sp | R. Constantin des. 2010 || NHMB-ENT | 2012-028’ (1 NHMB); ‘ Guyane, station Nourages | saut Pararé | 4º01 ′ N, 52º41 ′ W, 120m | 20.IV.2010, piège vitre | P. Dalens, S. Brûlé, E.Poirier || PARATYPE | Pygodiscodon | touroulti | Constantin n. sp | R.Constantin des.2010 || NHMB-ENT | 2012-028’ (1 ♀ NHMB); ‘ Guyane, station Nourages | saut Pararé | 4º01 ′ N, 52º41 ′ W, 120m | 23.XI.2009, piège vitre | P. Dalens, S. Brûlé, E. Poirie || PARATYPE | Pygodiscodon | touroulti | Constantin n. sp | R. Constantin des. 2010 || MZSP 5171’ (1 MZSP); ‘ Guyane, station Nourages | saut Pararé | 4º01 ′ N, 52º41 ′ W, 120m | 03.VI.2009, piège vitre | P. Dalens, S. Brûlé, E. Poirier || PARATYPE | Pygodiscodon | touroulti | Constantin n. sp | R. Constantin des. 2010 || MZSP 5172’ (1 ♀ MZSP);‘ Guyane, station Nourages | saut Pararé | 4º01 ′ N, 52º41 ′ W, 120m | 16.V.2010, piège vitre | P. Dalens, S. Brûlé, E. Poirier || PARATYPE | Pygodiscodon | touroulti | Constantin n. sp | R. Constantin des. 2010 || BMNH{E} | 2015-166 | R. Constantin’ (1 BMNH).

Additional material examined: BRAZIL: AMAPÁ: Porto Platon, 22.vii.1961, 1, J. & B. Bechyné leg. ( MZSP, 10259); Serra do Navio, 19.vii.1961, 1, J. & B. Bechyné leg. ( MPEG).

Additional published records: FRENCH GUIANA: Mana, Angoulême, 5°24 ′ N, 53°39 ′ W ( CCO); Maripa-Soula-Massif de Mitaraka, camp de base, altitude 300 m, 2°14 ′ 1 ″ N, 54°27 ′ 38 ″ W ( MNHN, CCO); Maripa-Soula, Mont Tabulaire Itoupé, altitude 600 m, 3°01 ′ 20 ″ N, 53°05 ′ 41 ″ W ( CCO); Régina, Petite Montagne Tortue , 4°18 ′ N, 52°13 ′ W ( CCO); Saint-Elie, Réserve de la Trinité, savane-roche de la Haute-Koursibo, 4°19 ′ N, 53°17 ′ W ( CCO); Saint-Laurent du Maroni, village Espérance, 5°25 ′ N, 54°03 ′ W ( CCO); Saül, belvédère de la Montagne Pelée, 3°37 ′ 22 ″ N, 53°12 ′ 57 ″ W ( CCO). All published by CONSTANTIN (2010b).

Description. Body length: 5.0–6.1 mm. Head black; frons, clypeus and base of mandibles light brown to testaceous, slightly translucent; apex of mandibles light brown; palpi dark brown. Antennae black; antennomeres X–XI yellowish-brown, except at base of X and tip XI. Pronotum orange-yellow with wide medial black patch stretching longitudinally from anterior to posterior margins. Elytra, thorax, legs and abdomen dark brown.

Male ( Fig. 6 ). Head as long as wide, broadly rounded behind eyes, densely pubescent; occipital region and frons convex; clypeus wide, emarginated anteriorly. Eyes rounded, slightly prominent. Maxillary palpi elongate, last palpomere slender and slightly securiform.Antennae ( Fig. 12 ) long, serrate and slightly compressed dorso-ventrally; dorsal surface of antennomeres VI–IX with irregular longitudinal line, not straight, varying in length and width. Pronotum densely pubescent, transverse, 1.6 times wider than long; lateral margins almost parallel, explanate upwards and shortly notched before basal angles. Elytra finely rugous, densely covered with erect brownish setae; each elytron 5 times longer than wide. Legs slender; tarsomeres increasing in size from pro- to metathoracic legs; inner claw of prothoracic tarsus broadly lamellate at base, meso- and metathoracic tarsal claws with sharp protruding tooth. Last abdominal ventrite ( Fig. 32 ) bilobed and slightly acute at apex; abdominal tergite VIII ( Figs 32–34 ) short and broad, strongly constricted posteriorly, forming broad and short apical projection bearing two contiguous glandular openings at apex. Aedeagus ( Figs 56–58 ): ventral wall of tegmen long and broad, lateral sides emarginated, apical margin truncate with short median incision, sparse short setae along lateral and apical margins; parameres very short, hidden behind dorsal margins of tegmen, bearing a few thin apical setae; median lobe long and slender, membranous apically; internal sac hidden inside median lobe, except apex of sclerites; ventral sclerite entire, not divided, apex slightly acute, curved ventro-laterally; dorsal sclerites slender, with apex curved dorso-laterally.

Female. Similar to male but antennae lacking longitudinal lines; pronotum not notched laterally; tarsal claws simple; abdominal ventrite VII ( Fig. 40 ) 2.7 times wider than long, not divided, lateral margins arched, distal margin with short and broad projecting tip; abdominal tergite VIII broad and simple.

Differential diagnosis. Colour pattern similar to P. gurupi sp. nov. and P. monoceros sp. nov. Antennal lines from antennomeres VI–IX; last abdominal ventrites of males bilobed, with acute apex; last abdominal tergite of males strongly constricted posteriorly forming broad and short apical projection.

Distribution. The species was known only from the type series from French Guiana ( CONSTANTIN 2010b). It is recorded for the first time from the State of Amapá in Brazil ( Figs 59–60 ).

Figures

Figs 1–6. Habitus of males of Pygodiscodon species. 1 – Pygodiscodon apicicornis (Pic, 1910); 2 – P. gurupi sp. nov.; 3 – P. monoceros sp. nov.; 4 – P. obscurus Wittmer, 1966; 5 – P. similis sp. nov.; 6 – P. touroulti Constantin, 2010. Scale bars = 2.0 mm.

Figs 7–12. Antennae of Pygodiscodon species (dorsal view). 7 – Pygodiscodon apicicornis (Pic, 1910); 8 – P. gurupi sp. nov.; 9 – P. monoceros sp. nov.; 10 – P. obscurus Wittmer, 1966; 11 – P. similis sp. nov.; 12 – P. touroulti Constantin, 2010. Scale bars = 1.0 mm.

Figs 26–34.Abdominal apex of Pygodiscodon species (ventral, dorsal and lateral views). 26–28 – P. obscurus Wittmer, 1966; 29–31 – P. similis sp. nov.; 32–34 – P. touroulti Constantin, 2010. Scale bar = 1.0 mm.

Figs 35–40.Abdominal ventrite VII of females of Pygodiscodon species, ventral view. 35 – Pygodiscodon apicicornis (Pic, 1910); 36 – P. gurupi sp. nov.; 37 – P. monoceros sp. nov.; 38 – P.obscurus Wittmer, 1966; 39 – P. similis sp. nov.; 40 – P. touroulti Constantin, 2010. Scale bars = 0.5 mm.

Figs 50–58.Aedeagi of Pygodiscodon species (ventral, lateral and dorsal views). 50–52 – P. obscurus Wittmer, 1966; 53–55 – P. similis sp. nov.; 56–58 – P. touroulti Constantin, 2010. Scale bar = 0.2 mm.

Figs 59–60. Distribution map of Pygodiscodon Wittmer, 1966. 59 – Distribution of Pygodiscodon species in South America; 60 – Distribution of Pygodiscodon species in French Guiana.