Pygodiscodon monoceros, Biffi & Constantin, 2018

Biffi, Gabriel & Constantin, Robert, 2018, Taxonomic revision of Pygodiscodon (Coleoptera: Cantharidae), Acta Entomologica Musei Nationalis Pragae 58 (1), pp. 77-90 : 84-85

publication ID

https://doi.org/ 10.2478/aemnp-2018-0008

publication LSID

lsid:zoobank.org:pub:CA1ECED6-3669-4FB5-8BF9-734CBC551131

DOI

https://doi.org/10.5281/zenodo.3681345

persistent identifier

https://treatment.plazi.org/id/03E1EC1D-FD43-D87B-3C8A-25BF7B29458F

treatment provided by

Tatiana

scientific name

Pygodiscodon monoceros
status

sp. nov.

Pygodiscodon monoceros sp. nov.

( Figs 3 View Figs 1–6 , 9 View Figs 7–12 , 23–25 View Figs 17–25 , 37 View Figs 35–40 , 47–49 View Figs 41–49 )

Type locality. French Guiana, Maripasoula, Mont Tabulaire Itoupé.

Type material: HOLOTYPE:, ‘ Guyane | Mont Tabulaire-Itoupé | 3°01 ′ 19 ″ N- 53°05 ′ 03 ″ W [provided in WGS84 geodesic system] | alt. 830 m, automatic light trap pink white LED | 1.XII.2014, SEAG, P. H. Dalens, S. Fernandez, E. Poirier leg || HOLOTYPE | Pygodiscodon | monoceros | Biffi & Constantin’ ( MNHN). GoogleMaps PARATYPES: ‘ Guyane | Mont Tabulaire-Itoupé | 3°01 ′ 19 ″ N- 53°05 ′ 03 ″ W | alt. 800m, auto-LT Pink LED | 1.XII.2014, SEAG & Dalens || Paratype | Pygodiscodon | monoceros | Biffi & Constantin’ (2 3 ♀♀ MZSP, 5165–5170); [ GoogleMaps same locality and collector but] 25.XI.2014, 250W UV light trap, 1 1 ♀ ( CCO); idem, 25.XI.2014, automatic light trap with white LED, 5 1 ♀ (1 MNHN, 5 CCO); idem, 26.XI.2014, automatic light trap with blue LED, 4 1 ♀ (3 MNHN, 2 CCO); idem, 26.XI.2014, automatic light trap with white LED, 1 ♀ ( CCO); idem, 1.XII.2014, automatic light trap with white LED, 3 (2 MNHN, 1 CCO); idem, 1.XII.2014, automatic light trap with blue LED, 1 1 ♀ ( BMNH); idem, 8.I.2016, conventional mercury vapor light trap, 1 ( CCO); idem, 11.I.2016, automatic light trap with GemLight (one green, one UV) LED, 1 1 ♀ ( CCO); idem, 16.I.2016, automatic light trap with blue LED, 1 ( CCO); idem, 16.I.2016, Malaise SLAM, 1 1 ♀ ( CCO); idem, 16.I.2016, Malaise trap #3, length 6 m, 1 3 ♀♀ ( CCO); idem, 16.I.2016, altitude 600m, automatic light trap with white LED, 1 ( CCO); idem, 16.I.2016, altitude 600m, automatic light trap with GemLight LED, 1 ( CCO).

Description. Body length: 6.8–8.2 mm. Head black; frons and clypeus yellow, mandibles brownish-yellow; palpi brown, apex of distal palpomere yellow. Antennae brown, antennomeres X–XI yellow, except base of X and tip of XI. Pronotum orange-yellow with wide medial black patch stretching longitudinally, not reaching posterior margin. Elytra dark brown; thorax, abdomen and legs brown, base of femora reddish-brown.

Male ( Fig. 3 View Figs 1–6 ). Head as long as wide, rounded behind eyes, densely pubescent; occipital region and frons convex; clypeus wide, emarginated anteriorly. Eyes rounded, very prominent. Maxillary palpi elongate, last palpomere slender and slightly securiform. Antennae ( Fig. 9 View Figs 7–12 ) long, serrate and compressed dorso-ventrally; dorsal surface of antennomeres III–X with broad, irregular longitudinal line. Pronotum densely pubescent, transverse, 1.5 times wider than long; lateral margins slightly emarginated, explanate upwards and shortly notched before basal angles. Elytra finely rugous, densely covered with erect greyish setae; each elytron 5.0 times longer than wide. Legs slender; tarsomeres increasing in size from proto metathoracic legs; inner claw of prothoracic tarsus broadly lamellate at base, meso- and metathoracic tarsal claws with sharp protruding tooth. Last abdominal ventrite ( Fig. 23 View Figs 17–25 ) bilobed, truncate posteriorly; last abdominal tergite ( Figs 23–25 View Figs 17–25 ) broadly rounded, with pair of lateral lobes directed posteriorly and apical hood-like projection bearing pair of juxtaposed glandular openings and single terminal slender digitiform projection directed upwards. Aedeagus ( Figs 47–49 View Figs 41–49 ): ventral wall of tegmen long and broad, lateral sides slightly rounded, apical margin truncate with short median incision; parameres slender, longer than median lobe, arched internally, bearing long and thick internal setae; median lobe broad and membranous, much shorter than internal sac; internal sac with robust sclerite divided in spine-like sclerites; ventral sclerite very broad with divided, acute lateral apices; dorsal sclerites curved dorsally and laterally, divided in two strong spine-like projections.

Female. Similar to male but eyes much smaller, not prominent, antennae lacking longitudinal lines; pronotum not notched laterally; tarsal claws simple; abdominal ventrite VII ( Fig. 37 View Figs 35–40 ) 2.1 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. touroulti . Eyes larger and more prominent; antennae longer, antennal lines from antennomeres III–X; last abdominal tergite of males rounded, with slender terminal digitiform projection directed upwards.

Etymology. The specific epithet is a noun in apposition. It recalls the singular character of the horn adorning the apex of the pygidium.

Distribution. French Guiana ( Figs 59–60 View Figs 59–60 ).

MNHN

Museum National d'Histoire Naturelle

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Cantharidae

Genus

Pygodiscodon