Nene undulatum, Kment, 2015

Kment, Petr, 2015, Two new genera of Madagascan Pentatominae (Hemiptera: Heteroptera: Pentatomidae), Acta Entomologica Musei Nationalis Pragae 55 (2), pp. 591-624 : 612-619

Nene undulatum sp. nov.

Type locality. Madagascar, Toamasina Province, Rogez, 18°48′00″S 48°37′06″E.

Type material. HOLOTYPE: J ( NMPC), ‘Rogez / Madagascar / Mus.Praha [p] // COLLECTIO / NATIONAL MU- SEUM / Praha, Czech Republic [p] // J [p] // HOLOTYPUS / NENE / UNDULATUM / sp. nov. / det. P. KMENT 2015 [p, red label]’. The holotype is pinned through scutellum, the detached right antennal segment IV sticking to the rest of the antenna. PARATYPES: 1 J, ‘Rogez / Madagascar / Mus.Praha [p] // COLLECTIO / NATIONAL MUSEUM / Praha, Czech Republic [p] // J [p]’ ( NMPC) ; male genitalia dissected: the dissected genital capsule, one paramere and the proctiger are glued on a separate piece of card, the phallus is stored in a plastic microvial in glycerol, all being attached to the same pin with the specimen; 1 ♀, ‘ Rogez / Madagascar / Mus.Praha [p] // CO- LLECTIO / NATIONAL MUSEUM / Praha, Czech Republic [p] // ♀ [p]’ ( NMPC). 1 J, ‘[M]aroantsetra [hw, first letter illegible] // INSTITUT / SCIENTIFIQUE / MADAGASCAR [p] // Brit. Mus. / 1965-338 [p] // Genus near / Triplatyx [hw] / W.E.China det. 196[p]4[hw] // J [p]’ ( BMNH) ; 1 J 2 ♀♀, ‘environs de / Tananarive [hw, pale blue label with black margins] // Madagascar [hw, pale blue label with black margins] // J or ♀ [p, respectively]’ ( MRAC) ; the male paratype has a detached but not dissected genital capsule glued on a separate piece of card attached to the same pin; one of the female paratypes has dissected abdomen glued to the specimen and internal genitalia stored in glycerol in a plastic microvial attached to the same pin. 1 ♀, ‘environs de / Tananarive [hw, pale blue label with black margins] // Madagascar [hw, pale blue label with black margins] // MUSEUM PARIS [p] // ♀ [p]’ ( MNHN). All paratypes bear the following identification label : ‘ PARATYPUS / NENE / UNDULATUM / sp. nov. / det. P. KMENT 2015 [p, red label]’.

Description of adult. Coloration ( Figs 6–8 ). Entire body and legs brick red, dorsally with only few narrow black (on anterior margin of humeri, on inner margin of pronotal calli, in foveae in anterolateral angles of scutellum) and brown markings (anterolaterally on margins of connexival segments). Body ventrally and femora with numerous irregularly scattered black markings, most prominent on meso- and metapleuron; abdominal ventrite VII anteromedially with large black triangular spot pointed posteriad ( Fig. 7 ); femora with few larger black spots on dorsal surface, the most lateral spot projecting ventrally and forming narrow, undulated, more or less complete ring. Antennal segment I reddish with black spots medially or in entire basal half, remaining antennal segments black with reddish apices. Labium reddish, apical segment darkened. Spiracles of abdominal ventrites III–VII black. Claws black apically. Membrane brown with dark brown veins.

Integument and vestiture. Body dorsally ( Fig. 6 ) with irregular, small but deep punctures, concolorous to black, leaving more or less wide and callose impunctate interspaces (most prominent on head and pronotum); endocorium posteriorly with punctures more shallow than elsewhere; punctures on connexivum shallow and mostly concolorous. Body ventrally ( Figs 48–49 ) with small (head, connexiva) to large (pleura, base of abdomen), concolorous to black, irregularly distributed punctures. Femora with few scattered large black punctures; tibiae impunctate.

Body glabrous, only tibiae (on inferior surface and apically), tarsi (ventrally), ventral rim infolding of genital capsule ( Figs 56–58 ), and external female genitalia (sparsely on valvifers VIII and IX, Fig. 54 ) covered with short, semierect to erect pale setae. Antennal segments III and IV densely covered with microtrichiae.

Structure. See the generic description.

Measurements (in mm). Males (n = 4, except antennal segments III (n = 3) and IV (n = 2); median (minimum–maximum); measurements of holotype presented in square brackets). Body length 13.85 (12.62–14.31) [14.31]; head: length 3.36 (3.23–3.58) [3.43], width (including eyes) 3.92 (3.63–4.02) [4.02], interocular width 2.94 (2.70–2.99) [2.99]; lengths of antennal segments: I – 0.72 (0.69–0.74) [0.74], IIa – 0.98 (0.93–1.03) [0.98], IIb – 1.06 (0.93–1.13) [1.13], III – 1.32 (1.23–1.37) [1.32], IV – 1.42–1.47 [1.42]; pronotum: length 3.56 (3.38–3.72) [3.68], width 10.98 (9.61–11.76) [10.98]; scutellum: length 6.47 (6.47–6.86) [6.47], width 6.03 (5.49–6.27) [6.08]; abdomen: width (across segment III) 10.88 (9.90–11.37) [10.88].

Females (n = 4, except antennal segments III and IV (n = 3); median (minimum–maximum)). Body length 13.77 (13.69–15.08); head: length 3.72 (3.68–3.72), width (including eyes) 4.07 (4.02–4.17), interocular width 3.04 (2.99–3.19); lengths of antennal segments: I – 0.78 (0.74–0.78), IIa – 0.98 (0.88–1.03), IIb – 1.01 (0.98–1.03), III – 1.27 (1.27–1.37), IV – 1.42 (1.37–1.47); pronotum: length 3.75 (3.68–3.97), width 11.42 (11.18–11.57); scutellum: length 6.96 (6.86–7.06), width 6.47; abdomen: width (across segment III) 11.47 (11.27–12.06).

Intraspecific variation. The specimens examined appear uniform in structure (except slight differences in measurements) and differ mostly in details of the black markings on the body venter and the antennal segment I. Only in some specimens from the environs of Antananarivo the venter of abdomen is more or less bright red.

Etymology. The species name is the Latin adjective undulatus (- a, - um), meaning wavy, waved, undulate, referring to the characteristic undulated lateral margins of abdomen.

Habitat and biology. Unknown.

Distribution. Humid and subhumid forest areas of north-eastern and eastern Madagascar (Fig. 74).

Figures

Figs 6–8. Nene undulatum sp. nov., habitus of adult (J, paratype from Maroantsetra, body length 14.0 mm): 6 – dorsal view, 7 – ventral view, 8 – lateral view.

Figs 48–55. Nene elongatum sp. nov. 48 – head, ventral view (magnification 37×). 49 – meso- and metapleuron with external scent efferent system of the metathoracic scent gland (25×). 50–51 – ostiole and peritreme (50 – 60×, 51 – 230×). 52–53 – metathoracic spiracle (52 – 75×, 53 – 300×). 54 – female external genitalia (30×). 55 – detail of trichobothria and spiracle on ventrite VI (190×). Abbreviations: ev – evaporatorium, o – ostiole, pes – peritremal surface, sp – spiracle, tr – trichobothrium. Scale bars: 0.1 mm – 51, 53, 55; 0.5 mm – 50, 52; 1 mm – 48, 49, 54.

Figs 56–62. Nene elongatum sp. nov. 56–59 – genital capsule: 56 – undissected, dorsal view (magnification 35×); 57 – dissected, dorsal view (35×). 58 – undissected, posterior view (42×); 59 – dissected, lateral view (37×). 60 – proctiger, dorsal view (100×). 61 – paramere, extracted (85×). 62 – paramere, in situ (95×). Abbreviations: dif – dorsal rim infolding, dr – dorsal ridge of ventral wall, lif – lateral rim infolding, ml – membranous lobe of lateral rim infolding, p – paramere, pap – posterior aperture, vif – ventral rim infolding, vr – ventral ridge of ventral wall, vwd – ventral wall depression. Scale bars: 0.2 mm – 60–62; 0.5 mm – 56–59.