Acylophorus hova

Janák, Jiří, 2018, Revision of the genus Acylophorus Nordmann, 1837 from Madagascar and Mascarene Islands (Coleoptera: Staphylinidae: Staphylininae: Acylophorina), Zootaxa 4462 (2), pp. 151-191: 168-170

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Acylophorus hova

sp. nov.

Acylophorus hova  sp. nov.

( Figs. 78View FIGURES 78–86 –92, 176)

Type locality. Madagascar, Ankarafantsika National Park , 16 18' 10.7", S 46 48' 47.1" E. 

Type material. Holotype ♂: MADAGASCAR: “AKF/08/2011 MADAGASCAR NW,

ANKARAFANTSIKA N.P.; 23.iv.2011, S16°18’10.7‘‘E46°48’47.1‘‘; 81m, sifting forest litter, Winkler app. extr., L.S.Rahanitriniaina & R.Raveloson lgt.”, „HOLOTYPUS Acylophorus hova  sp. nov., J. Janák det. 2017” (MMBC).

Paratypes: 3 ♂: same data as holotype (2 ♂: MMBC, 1 ♂: JJRC)  ; 4 ♂, 3 ♀: “AKF/05/2011 MADAGASCAR NW, ANKARAFANTSIKA N.P.; 23.iv.2011, S16°18’05.1‘‘ E46°49’08.3‘‘; 89m, sifting forest litter, Winkler app. extr., L.S.Rahanitriniaina & R.Raveloson lgt. ” (2 ♂, 2 ♂: MMBC, 2 ♂, 1 ♀: JJRC)GoogleMaps  ; 1 ♀: “AKF/07/2011 MADAGASCAR NW, ANKARAFANTSIKA N.P.; 23.iv.2011, S16°18’07.8‘‘ E46°48’59.5‘‘; 79m, sifting forest litter, Winkler app. extr., L.S.Rahanitriniaina & R.Raveloson lgt.” ( MMBC)GoogleMaps  ; 1 ♀: “AKF/09/2011 MADAGASCAR NW, ANKARAFANTSIKA N.P.; 23.iv.2011, S16°18’09.9‘‘ E46°48’39.3‘‘; 87m, sifting forest litter, Winkler app. extr., L.S.Rahanitriniaina & R.Raveloson lgt.” ( MMBC)GoogleMaps  ; 1 ♀: “AKF/11/2011 MADAGASCAR NW ANKARAFANTSIKA N.P.; 24.iv.2011, S16°18’09.0‘‘ E46°48’55.6‘‘; 83m, sifting forest litter, Winkler app. extr., L.S.Rahanitriniaina & R. Raveloson lgt.” ( MMBC). All paratypes with additional label: „ PARATYPUS Acylophorus hova  sp. nov., J. Janák det. 2017”GoogleMaps  .

Description. Body length 6.5–7.7 mm (M=7.0 mm, HT= 7.3 mm), forebody length 2.4–2.8 mm (M= 2.6 mm, HT= 2.7 mm). Body dark brown ( Fig. 78View FIGURES 78–86), pronotum reddish-brown with reddish margins, apical margin of elytra reddish-brown, abdominal tergites brown, markedly bluish iridescent; antennae brown with first segment almost completely and sometimes last 1–2 segments partly reddish; legs reddish, tarsi and maxillary palpi light reddish.

Head suboval ( Fig. 79View FIGURES 78–86), about as long as wide (L/W=0.94–1.05, M=0.98, HT=0.99), widened behind eyes, with two pairs of interocular setae. Temples markedly shorter than eyes (LT/LE=0.60–0.74, M=0.68, HT=0.60). Dorsal side of head shining, without micropunctures. Only sparse pale grey pubescence behind eyes. Four postocular setae visible on each side, additional seta on hind margin of eye absent. Mandibles with large teeth ( Fig. 80View FIGURES 78–86). Maxillary palpi with terminal segment wide and quite short, pubescent, asymmetric, as wide as or only slightly wider and longer than glabrous penultimate segment which is triangular ( Fig. 81View FIGURES 78–86). First segment of antenna slightly longer than next five; segments 1 to 4 elongate, segment 5 longer than wide (L/W=1.04–1.37, M=1.20, HT=1.38), segments 6 as long as wide, segments 7–9 transverse, segment 10 markedly transverse (R=0.73–0.83, M=0.77, HT=0.83).

Pronotum ( Fig. 79View FIGURES 78–86) slightly transverse (W/L=1.12–1.22, M=1.17, HT=1.17), markedly widened behind with sides slightly rounded, widest in basal half, shining, without micropunctures. One pair of dorsal setae and one pair of lateral setae. Marginal setae short. Elytra markedly transverse (R=1.42–1.74, M=1.53, HT=1.74) with short, pale, but not shining pubescence arising from dense aspirate punctures. Apical fringe of bristles slightly longer than pubescence on other parts of the elytra. Abdominal tergites with short, moderately dense pubescence, interstices in transverse direction on middle part of tergite IV about two times as large as diameter of punctures. Meso- and metatarsi with short empodial setae, shorter than claws ( Figs. 87, 88View FIGURES 87–90).

Male (n=5). Sternite 9 long and narrow ( Figs. 90View FIGURES 87–90), apex of tergite 10 narrowly rounded, with very long apical setae ( Fig. 89View FIGURES 87–90). Aedeagus ( Figs. 82–86View FIGURES 78–86) 0.76–0.85 mm long (M= 0.79 mm, HT= 0.78 mm). Parameres bilobed, lobes markedly separated, sensory pegs confusedly arranged in posterior quarter ( Fig. 86View FIGURES 78–86). Median lobe slightly overreaching paramere, apex narrowly rounded ( Figs. 84, 86View FIGURES 78–86).

Female. Posterior margin of tergite 10 pointed (Fig. 91), valves as in Fig. 92.

Differential diagnosis. Acylophorus hova  sp. nov. is very similar to A. montanus  sp. nov., but differs by wider pronotum, which is more widened behind, at most partly lighter last antennal segments, densely punctate abdomen, narrowely rounded apex of median lobe in males and pointed apical margin of tergite 10 in females.

Distribution. The new species is known only from Ankarafantsika in northern part of Central Madagascar ( Fig.176View FIGURES 172–177).

Bionomics. All specimens of Acylophorus hova  sp. nov. were collected by siftings of forest litter.

Discussion. The new species shares very similar shape of aedeagus with Acylophorus montanus  sp. nov. Originally I supposed that all the differences between the two species fell within an intraspecific variability of one species. However after examination of females, where significant difference between the shape of apical margin of tergite 10 was found, it became apparent that these are two different species. Later I found a few additional differencies in both sexes.


Moravske Muzeum [Moravian Museum]