Trogoderma sahondrae

Háva, Jiří & Baňař, Petr, 2017, A new TrogodErma species from Central Madagascar (Coleoptera: Dermestidae: Megatominae), Zootaxa 4299 (2), pp. 279-284: 280-283

publication ID

https://doi.org/10.11646/zootaxa.4299.2.8

publication LSID

lsid:zoobank.org:pub:F9946DC1-CA76-47C0-B755-E1265DEDB350

persistent identifier

http://treatment.plazi.org/id/D47187D5-FFAE-5104-FF5C-FBADFC1D23A3

treatment provided by

Plazi

scientific name

Trogoderma sahondrae
status

sp. nov.

Trogoderma sahondrae  sp. nov.

( Figs. 1–10View FIGURES 1 – 3View FIGURES 4 – 8View FIGURES 9 – 10)

Type material. Holotype, male: ABTAbout ABT \ Nov.2011 \19 MADAGASCAR / AMBOHITANTELY Spec. Res.   ; 1497m / S18°10´56.9´´E47°17´21.9´´; 23.xi. / 2011; sifting forest litter; Winkler app. / extraction; L.S. Rahanitriniaina lgt. (MMBC). Paratypes: (1 spec.) the same data as holotype ( MMBCAbout MMBC)  ; (9 spec.): ABTAbout ABT \ Nov.2011 \15 MADAGASCAR / AMBOHITANTELY Spec. Res.   ; 1634m / S18°11´32.0´´E47°17´08.7´´; 21.xi. / 2011; sifting forest litter under / Pandanus  ; Winkler app. extraction; / L.S. Rahanitriniaina lgt. (4 MMBC, 5 JHAC); (4 spec.): ‘ ABTAbout ABT \ Nov.2011 \02 MADAGASCAR / AMBOHITANTELY Spec. Res. ; / S18°11´49.1´´ E47°17´05.6´´GoogleMaps  ; 1547m / 16–17.xi.2011; sifting forest litter / Winkler app. extraction / L.S. Rahanitriniaina & P. Baňař lgt. ’ (2 MMBC, 2 JHAC); (3 spec.): ‘ ABTAbout ABT \ Nov.2011 \14 MADAGASCAR / AMBOHITANTELY Spec. Res.   ; 1623m / S18°11´22.7´´E47°17´07.8´´; 21.xi. / 2011; sifting forest litter under / Pandanus  ; Winkler app. extraction; / L.S. Rahanitriniaina lgt. ’ (2 MMBC, 1 JHAC); (7 spec.) ABTAbout ABT \ Nov.2011 \07 MADAGASCAR / AMBOHITANTELY Spec. Res. ; 17.xi. / 2011; S18°11´48.5´´ E47°17´09.3´´ / sifting forest litter under Pandanus  / Winkler app. extraction; very dry / materialGoogleMaps  ; 1595m; P. Baňař lgt. (4 MMBC, 3 JHAC); (1 spec.) ABTAbout ABT \ Nov.2011 \16 MADAGASCAR / AMBOHITANTELY Spec. Res.   ; 1620m / S18°11´42.6´´E47°17´10.8´´; 21.xi. / 2011; sifting forest litter under / Pandanus  ; Winkler app. extraction; / L.S. Rahanitriniaina lgt. (MMBC); (1 spec.): ‘ ABTAbout ABT \ Nov.2011 \10 MADAGASCAR / AMBOHITANTELY Spec. Res.; 18.xi. / 2011; sifting forest litter under palm / tree; Winkler app. extraction; / ~ 1600m; P. Baňař lgt. ’ ( MMBCAbout MMBC). [most of the paratypes card mounted, some of them dissected or damaged, those alcohol-preserved]. 

Description. Male. Body measurrements (in mm, taken from four specimens):

Total body length: 2.55–2.81. Head: total length: 0.48–0.50; maximum width across eyes: 0.69–0.71; minimum distance between eyes: 0.40–0.41. Pronotum: maximum (median) length: 0.69–0.71; maximum width: 1.47–1.52. Elytra: maximum length: 2.03–2.18; maximum width: 1.65–1.72.

General appearance. Small, oval species with conspicuous colour pattern ( Figs. 1–3View FIGURES 1 – 3).

Colouration. Dark-brown on dorsal and ventral surfaces ( Figs. 1–3View FIGURES 1 – 3), legs paler, light brown, scape, pedicel and antennomere IX light brown, antennomeres III–VIII yellowish, antennomeres X and XI dark brown to blackish.

Structure. Head finely punctate with regularly distributed short black setae. Palpi entirely yellowish-brown; setation on mentum dense. Eyes small, not overlapping lateral margin of head from dorsal view, ocular index 2.58. Ocellus on frons conspicuous. Antennae ( Fig. 4View FIGURES 4 – 8) composed of 11 antennomeres, antennal club of 4 antennomeres. Thorax. Pronotum finely punctate like head with short black setation; lateral and anterior margins continuous, without any crank or angle regularly rounded, posterior margin conspicuously bisinuate, anterior angles not visible from above. Pronotum much wider than long ( Fig. 1View FIGURES 1 – 3), pronotum width to maximum length ratio 2.13. Mesonotum heavily sclerotized ( Fig. 6View FIGURES 4 – 8), scutellum small, triangular, finely punctate as for pronotum and head, asetose. Metanotum robust ( Fig. 6View FIGURES 4 – 8), more weakly sclerotized than mesonotum, hind wing as in Fig. 7View FIGURES 4 – 8. Meso-metasternum dark brown with short golden setation.

Elytra coarsely punctate; brown with three, transverse, orange fasciae ( Fig. 5View FIGURES 4 – 8); covered by golden setation ( Figs. 1–3View FIGURES 1 – 3). Anterior half of elytral epipleuron conspicuously darker than rest of elytron, entirely brown to blackish. Ratio of elytra length to their maximum width 1.27. Legs brown with short golden setation; tibiae without spines. Abdominal ventrites with short golden setation ( Fig. 2View FIGURES 1 – 3). First visible abdominal ventrite with distinct oblique discal striae and robust, heavily sclerotized median tubercle present ( Fig. 8View FIGURES 4 – 8). Pygidium brown with short, black setation. Male genitalia. Aedeagus narrow, parallel-sided in apical two thirds ( Figs. 9–10View FIGURES 9 – 10), heavily sclerotized basally.

Variability. Total body length 2.55–2.81 mm, maximum elytral width 1.65–1.72.

Sexual dimorphism. Female similar to male, but terminal antennomere conspicuously smaller.

Differential diagnosis (Madagascan species only included). The new species differs from T. taomasinum Háva, 2009  by bicolorous elytra (unicolorous in T. taomasinum  ); from T. trifasciatum Háva, 2009  by conspicuously oval body shape (body elongate in T. trifasciatum  ); from T. fasciolata (Fairmaire, 1897)  , T. impressiceps (Pic, 1915)  , T. madecassum (Pic, 1924)  , T. wolfgangi Háva & Herrmann, 2008  and T. housei Háva, 2014  by antennal club composed of four antennomeres (antennal club composed of three antennomeres in T. fasciolata  and T. impressiceps  ; five antennomeres in T. wolfgangi  and T. housei  and six antennomeres in T. madecassum  ); from T. seminigrum Pic, 1915  by presence of large orange fasciae on elytra (small spots of whitish pubescence in T. seminigrum  ) and from T. horaki Háva, 2013  and T. sambiranum Háva, 2009  by presence of three large orange fascia on elytra (one orange fascia in T. horaki  , one orange spot on apex of each elytron and single orange fascia of white pubescence in T. sambiranum  ). See also the Identification key to the known Madagascan species of Trogoderma  following.

Etymology. This species is named after Lalao Sahondra Rahanitriniaina, our Malagasy colleague who collected most of the type series.

Collecting circumstances. All known specimens were sifted from leaf litter in mountain forests of Ambohitantely Special Reserve. Sifted material was subsequently extracted in a Winkler apparatus and collected into alcohol.

Type locality. Ambohitantely Special Reserve , Central Madagascar. 

ABT

Laboratoire de Biologie V�g�tale et d'Ecologie Foresti�re

MMBC

Moravske Muzeum [Moravian Museum]