Acylophorus, Nordmann, 1837

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 : 153

Key to Afrotropical species groups of Acylophorus

(based on Lott 2010, extended and modified)

1 Disc of pronotum covered by sparse, semi-erect pubescence except sometimes for central glabrous strip ( Figs. 26, 27 in Lott 2010); pubescence on head covering most of upper surface except for central glabrous strip; apex of styles at tip of abdomen devoid of bristles and easily visible ( Fig. 133 in Lott 2010). Continental sub-Saharan Africa............ kambuiensis group

- Disc of pronotum glabrous except for a pair of setae; pubescence on head restricted to small area behind eyes; apex of styles at tip of abdomen covered by bristles and more or less invisible ( Fig. 30 in Lott 2010)................................. 2

2 Pronotum covered by microsculpture consisting of dense micro-punctures visible at 40x magnification. Continental sub-Saharan Africa, Madagascar................................................................... densipennis group

- Pronotum shining either without microsculpture or, much more rarely, with scattered and sparse micro-punctures......... 3

3 Last two segments of maxillary palpi without dense pubescence. Madagascar....................... derougemonti group

- At least last segment of maxillary palpi densely pubescent..................................................... 4

4 Last two segments of maxillary palpi densely pubescent ( Figs. 70–74 in Lott 2010)................................. 5

- Only last segment of maxillary palpi pubescent, penultimate segment glabrous ( Figs. 51–69 in Lott 2010); two pairs of interocular setae present on head............................................................................... 6

5 Three pairs of interocular setae present on head. Continental sub-Saharan Africa.................. trigonocephalus group

- Two pairs of interocular setae present on head. Madagascar....................................... muscorum group

6 Head larger, pronotum no more than 1.8x wider than head ( Figs. 1–8 in Lott 2010); head strongly and abruptly depressed at base underneath ( Fig. 29 in Lott 2010); pubescence behind eyes denser and more extensive; genae not expanded forward in front of eyes. Metatarsi with four first segments with short terminal setae, last segment with long empodial setae ( Figs. 9, 10 ). Continental sub-Saharan Africa, Madagascar.................................................... orientalis group

- Head smaller, pronotum at least 1.9x wider than head ( Figs. 18–20 in Lott 2010); ventral depression at base of head shallow (Fig. 108 in Lott 2010); pubescence behind eyes sparser and less extensive; genae expanded forward in front of eyes. Metatarsi with four first segments with long terminal setae, last segment with short empodial setae ( Figs. 87, 88 ). Continental sub-Saharan Africa, Madagascar, Mascarene Islands ( Mauritius)................................................ salifi group

Figures

FIGURES 22–30. Acylophorus derougemonti sp. nov. 22, 23, holotype; 24–29, Maromiza; 30, Ranomafana. 22, habitus; 23, head and pronotum; 24, mandibles; 25, maxillary palpus; 26, aedeagus lateral; 27, aedeagus ventro-lateral; 28–30 aedeagus ventral. 26–30 same scale bars.

FIGURES 129–138. Acylophorus montanus sp. nov. 129–133, paratypes from Andringitra; 134–138, paratypes from Ambohitantely. 129, 134, aedeagus lateral; 130, 135, aedeagus ventro-lateral; 131–133, 136–138, aedeagus ventral; same scale bars.

FIGURES 67–73. Acylophorus madecassus sp. nov., holotype. 67, habitus; 68, head and pronotum; 69, mandibles; 70, maxillary palpus; 71, aedeagus lateral; 72, aedeagus ventro-lateral; 73, aedeagus ventral. 71–73, same scale bars.

FIGURES 74–77. Acylophorus madecassus sp. nov., holotype. 74, aedeagus lateral; 75, aedeagus ventral; 76, male tergites 9, 10; 77, male sternite 9. 74, 75, transmitted light, same scale bars.

FIGURES 46–51. Acylophorus muscorum Jarrige. 46–49, Andasibe; 50, 51, Maromiza. 46, aedeagus lateral in transmitted light; 47, aedeagus ventral in transmitted light; 48, male tergite 9, 10; 49, male sternite 9; 50, female tergites 9, 10; 51, valves.

FIGURES 52–60. Acylophorus delphinus Fauvel. 52, 53, 56–60, Kirindi; 54, 55, Ampatika. 60, holotype. 52, habitus; 53, head and pronotum; 54, mandibles; 55, maxillary palpus; 56, aedeagus lateral; 57, aedeagus ventro-lateral; 58–60, aedeagus ventral. 56–60, same scale bars.

FIGURES 61–66. Acylophorus delphinus Fauvel. 61–64, Kirindy; 65, 66, Ampatika. 61, aedeagus lateral; 62, aedeagus ventral; 63, male tergites 9, 10; 64, male sternite 9; 65, female tergites 9, 10; 66, valves. 61, 62, transmitted light. 61–62, 65–66, same scale bars.

FIGURES 1–8. Acylophorus tristis Jarrige. 1, 2, 6–8 holotype; 3, 4, Col de Marotaolana; 5, Andasibe. 1, habitus; 2, forebody; 3, detail of head; 4, mandibles; 5, maxillary palpus; 6, aedeagus lateral; 7, aedeagus ventro-lateral; 8, aedeagus ventral. 6–8, same scale bars.

FIGURES 9–17. Acylophorus tristis Jarrige. 9, 10, 15–17, Col de Marotaolana; 11–13, Sendrisoa; 14, Manindray. 9, metatarsus lateral; 10, metatarsus dorsal; 11, 16, aedeagus lateral; 12, aedeagus ventro-lateral; 13–15, aedeagus ventral. ES, empodial setae. 16, 17, transmitted light. 9–10, 11–17, same scale bars.

FIGURES 18–21. Acylophorus tristis Jarrige, Col de Marotaolana. 18, male tergites 9, 10; 19, male sternite 9; 20, female tergites 9, 10; 21, valves.

FIGURES 87–90. Acylophorus hova sp. nov., paratypes. 87, metatarsus lateral; 88, metatarsus dorsal; 89, male tergites 9, 10; 90, male sternite 9; 91, female tergites 9, 10; 92, valves. 87, 88, same scale bars.