123,785 research outputs found
Mean square error for the Leland-Lott hedging strategy: convex pay-offs.
No full textLeland’s approach to the hedging of derivatives under proportional transaction costs is based on an approximate replication of the European-type contingent claim V T using the classical Black–Scholes formula with a suitably enlarged volatility. The formal mathematical framework is a scheme of series, i.e., a sequence of models with transaction cost coefficients k n =k 0 n −α , where α∈[0,1/2] and n is the number of portfolio revision dates. The enlarged volatility in general depends on n except for the case which was investigated in detail by Lott, to whom belongs the first rigorous result on convergence of the approximating portfolio value to the pay-off V T . In this paper, we consider only the Lott case α=1/2. We prove first, for an arbitrary pay-off V T =G(S T ) where G is a convex piecewise smooth function, that the mean square approximation error converges to zero with rate n −1/2 in L 2 and find the first order term of the asymptotics. We are working in a setting with non-uniform revision intervals and establish the asymptotic expansion when the revision dates are , where the strictly increasing scale function g:[0,1]→[0,1] and its inverse f are continuous with their first and second derivatives on the whole interval, or g(t)=1−(1−t) β , β≥1. We show that the sequence converges in law to a random variable which is the terminal value of a component of a two-dimensional Markov diffusion process and calculate the limit. Our central result is a functional limit theorem for the discrepancy process.Diffusion approximation; Martingale limit theorem; European option; approximate hedging; transaction costs; Leland-Lott strategy; Black-Scholes formula;
Acylophorus salifi Lott, new species
No full textAcylophorus salifi Lott, new species (Figs 18, 46, 67, 94, 108, 126– 128) Description. Length 6 –7mm. Head black. Pronotum dark brown to black. Scutellum black. Elytra red-brown to black. Abdomen black, iridescent to varying degrees. Sometimes the body is all brown. Legs red. Antennae pale or dark with segment I pale. Maxillary palpi usually all pale. Head much smaller than in A. orientalis (pronotum 2 x wider than head), more or less as long as wide with temples barely suggested (Fig. 18). Antennae inserted right on front margin with no pigmented area in front. No micro-punctures visible at 80 x magnification. Short pubescence behind eyes localised and much sparser than in A. orientalis. Two pairs of interocular setae arising from foveate punctures much closer to eyes than each other and five postocular setae visible from above on each side. No extra seta by hind margin of eye. Underside of head with sparse pubescence, weakly depressed at base (Fig. 108). Gular sutures continued to base of head, converging toward base but well separated throughout their length. Mandibles short with no medial teeth in front of a wide flange (Fig. 46). Maxillary palpi with terminal segment densely pubescent, markedly asymmetric, longer than short, triangular, glabrous penultimate segment (Fig. 67). First segment of antenna as long as next four (Fig. 94). Segments I to V elongate, VIII to XI transverse. Pronotum transverse (1.4x wider than long) with rounded sides and widest in basal half. Shining with no micro-punctures. One pair of dorsal setae. One pair of lateral setae. Marginal setae long. Elytra strongly transverse (1.65x wider than long) with relatively short pubescence arising from fine, asperate punctures. Fringe of bristles on hind margin longer than the hairs on the rest of the elytra. Asperate punctures on abdominal tergites stronger than on elytra, denser toward base. Paramere bilobed, each lobe weakly arched and well separated, pegs confusedly arranged in apical half of each lobe (Figs 126–128). Median lobe longer than paramere, barely expanded at apex which is rounded. There is considerable variation in the form of the aedeagus. The lobes of the paramere can be very slightly curving inward toward apex or slightly diverging. The apex of the median lobe can broadly rounded, sometimes with a central point, or more produced. Type material. Holotype 3: “ BURKINA Naouri Nazinga, Bge d’Akouzina 11 O 9 ’N 1 O 36 ’W tussock DA Lott, 29.x. 2003 / HOLOTYPE Acylophorus salifi sp. n. 3 det. DA Lott, 2009 ”. Paratypes 13 same data as holotype; 1 Ƥ: “ BURKINA Naouri Nazinga, Bge de Barka, 11 O 8 ’N 1 O 37 ’W tussock DA Lott, 29.x. 2003 / PARATYPE Acylophorus salifi sp. n. Ƥ det. DA Lott, 2009 ”; 1 Ƥ: BURKINA Naouri Bge de Kouzougou, mud 11 O 9 ’N 1 O 32 ’W, DA Lott, 11.x. 2004 / PARATYPE Acylophorus salifi sp. n. Ƥ det. DA Lott, 2009 ”; 332 Ƥ: BURKINA Comoe Bge de Bounouna, 10 O 39 ’N 4 O 44 ’W, DA Lott, 20.x. 2004 / PARATYPE Acylophorus salifi sp. n. det. DA Lott, 2009 ”. The holotype and paratypes have been placed in the collections of the BMNH. This species was given the manuscript name, A. rufipennis by Bernhauer and a type was labelled accordingly, but he never published a description of the species. The name is now unavailable. Further material examined. ANGOLA: Kundueje, R. Sanga, xi. 1948, 13 (BMNH); no data, 1 Ƥ (BMNH). BURKINA FASO: Comoe: Bge de Bounouna, 10 O 39 ’N 4 O 44 ’W, DA Lott, 20. x. 2004, 14 (cBord, cJanak & cLott). R.D. CONGO: Ituri: Bunia, Mt. Hoyo, 1200m, N Leleup, iii. 1952 2 Ƥ (ISRNB); Katanga: Kundelungu, 1680m – 1750m, N Leleup, 8.iii. 1950 – 25.x. 1951, 432Ƥ (ISRNB); Kinshasa: cataracts, N Leleup, xii. 1952 23 (ISRNB); Kivu: Masisi, Lac Ndalaga, 1800m, N Leleup, vi. 1959 1 Ƥ (ISRNB); Masisi, Walikali, 700m, N Leleup, ix. 1953 13 (ISRNB); Masisi, Mutakato, 800m, N Leleup, ix. 1953 231 Ƥ (ISRNB); Uvira, rives basses, Sanghe, 980m, N Leleup, 13.ix. 1951 13 (ISRNB). CÔTE D’IVOIRE: Bingerville, J Decelle, ix. 1961, 13 (IRSNB). ZAMBIA: R. Zambezi, Victoria Falls, N Leleup, vii. 1960 13 (ISRNB); Abercorn, F. de la Mwengo, 1800m, N Leleup, vii. 1960, 2 Ƥ (ISRNB). ZIMBABWE: Salisbury, GAK Marshall, vii. 1896, 4 (BMNH). Distribution and bionomics. A widespread species ranging from Burkina Faso to Angola, but not yet known from East Africa (Fig. 145). One of the more frequently collected species from the Congo catchment, where it has been found in “humus” in gallery forests as well as “roseaux morts” on a riverbank. Nearly all the specimens from Burkina Faso were collected by dissecting tussocks in well vegetated margins of large reservoirs constructed for irrigation or as waterholes for wildlife in the Nazinga Game Reserve. Discussion. There are variations in both coloration and the form of the aedeagus (Figs 126–128). Most of this variation occurs between specimens taken from localities in the Congo catchment. Outside this area, most specimens are black with reddish elytra, sometimes with black front and side margins. The variations in the aedeagus occur both between different localities and to some extent within series taken from the same locality. Intermediate forms occur between the extremes of each type of variation, but some populations may be referable to distinct taxa once sufficient material from further localities becomes available for study. Etymology. This species is named after Salif Mohammed Ouedraogo of Ouagadougou, driver extraordinaire, who accompanied me on my expeditions in Burkina Faso. The species name is the genitive case of a Latinised version of his name.Published as part of Lott, Derek A., 2010, The species of Acylophorus Nordmann (Coleoptera: Staphylinidae: Staphylininae) in continental sub-Saharan Africa, pp. 1-51 in Zootaxa 2402 on pages 25-26, DOI: 10.5281/zenodo.27590
Acylophorus minor Lott, new species
No full textAcylophorus minor Lott, new species (Figs 20, 69, 96, 131) Description. Length 5 –5.5mm. Body dark brown with pronotum and apical margins of abdominal tergites paler. Abdominal tergites iridescent. Appendages red-brown, apical segments of antennae yellow. Head small (pronotum 2 x wider than head), more or less as long as wide with temples barely suggested (Fig. 20). Antennae inserted right on front margin with no pigmented area in front. Genae well developed and produced at sides of front margin. No micro-punctures visible at 80 x magnification. Short pubescence behind eyes localised and very sparse. Two pairs of interocular setae arising from foveate punctures much closer to eyes than each other and five postocular setae visible from above on each side. No extra seta by hind margin of eye. Underside of head weakly depressed at base. Gular sutures continued to base of head, converging toward base but well separated throughout their length. Mandibles similar to A. salifi. Maxillary palpi with terminal segment densely pubescent, markedly asymmetric, longer than short, triangular, penultimate segment, which is glabrous (Fig. 69). First segment of antenna longer than next four (Fig. 96). Segments I to V elongate, VII to XI transverse. Pronotum less transverse than in A. salifi (1.2x wider than long) with rounded sides and widest in basal half. Shining with no micro-punctures. One pair of dorsal setae. One pair of lateral setae. Marginal setae long. Elytra strongly transverse (1.8x wider than long) with pubescence arising from fine, asperate punctures. Fringe of bristles on hind margin longer than the hairs on the rest of the elytra. Asperate punctures on abdominal tergites stronger than on elytra, denser toward base. Paramere bilobed, each lobe weakly arched and curved inwards at apex, pegs confusedly arranged in apical half of each lobe (Fig. 131). Median lobe longer than paramere, expanded at apex which is rounded. Type material. Holotype 3: “ CÔTE D’IVOIRE Riv. Sassandra / MUSÉUM PARIS 12-1930 - IV- 1931 P.A. CHAPUIS / Acylophorus Pauliani Brh Typ / Chicago NHMUS M. Bernhauer Collection / HOLOTYPE Acylophorus minor sp. n. 3 det. DA Lott, 2009 ” (FMNH). Paratypes 13: “K 431 OPRS NIGERIA 1951 / PARATYPE Acylophorus minor sp. n. 3 det. DA Lott, 2009 ” (MMUM); 1 Ƥ: “K 700 IBADAN NIGERIA 21 4 53 / PARATYPE Acylophorus minor sp. n. 3 det. DA Lott, 2009 ” (MMUM); 1 Ƥ: “K 711 IBADAN NIGERIA 14 4 53 / PARATYPE Acylophorus minor sp. n. 3 det. DA Lott, 2009 ” (MMUM). This species was given the manuscript name, A. pauliani by Bernhauer and a type was labelled accordingly, but he never published a description of the species. Distribution and bionomics. Only known from four specimens collected in Côte d’Ivoire and Nigeria (Fig. 146). There are no ecological data. Comparative notes. Similar to A. lomaensis. Distinguished by the form of the aedeagus. Etymology. The specific name is the masculine form of the comparative adjective meaning “lesser” and refers to the relatively small size of the species.Published as part of Lott, Derek A., 2010, The species of Acylophorus Nordmann (Coleoptera: Staphylinidae: Staphylininae) in continental sub-Saharan Africa, pp. 1-51 in Zootaxa 2402 on pages 28-29, DOI: 10.5281/zenodo.27590
Limit Theorem for a Modified Leland Hedging Strategy under Constant Transaction Costs rate
No full textWe study the Leland model for hedging portfolios in the presence of a constant proportional transaction costs coefficient. The modified Leland's strategy recently defined by the second author, contrarily to the classical one, ensures the asymptotic replication of a large class of payoff. In this setting, we prove a limit theorem for the deviation between the real portfolio and the payoff. As Pergamenshchikov did in the framework of the usual Leland's strategy, we identify the rate of convergence and the associated limit distribution. This rate turns out to be improved using the modified strategy and non periodic revision dates.Asymptotic hedging ; Leland-Lott strategy ; Transaction costs ; Martingale limit theorem.
Acylophorus makhoreae Lott, new species
No full textAcylophorus makhoreae Lott, new species (Figs 8, 38, 58, 84, 116) Description. Length 7mm. Body colour very variable ranging from pale brown to black. Pronotum yellow to red-brown with a dark, diffuse mark covering the disc and sometimes suffused almost to the edges. Abdomen iridescent when dark. Appendages similarly variable in colour, but the terminal segment of the maxillary palpi is always darker than the penultimate segment. Head of average size (pronotum 1.75x wider than head), more or less as long as wide with rounded temples not very evident (Fig. 8). Pigmented area of head extending well in front of antennal insertion. Micropunctures extending over much of head, but very sparse away from the front of the head and next to the eyes. Dense short pubescence behind eyes. Two pairs of interocular setae arising from foveate punctures much closer to eyes than each other. Only four postocular setae visible from above on each side. Underside of head sparsely pubescent, depressed at base with gular sutures separate, but very proximate toward base. Right mandible with one sharp median tooth; left mandible lacking sharp tooth (Fig. 38). Maxillary palpi with terminal segment densely pubescent, with rounded angle on outer margin, asymmetric and less elongate than A. orientalis, longer than glabrous penultimate segment which is slightly elongate (Fig. 58). First segment of antenna as long as next five. Segments I to IV elongate, VII to XI transverse (Fig. 84). Pronotum only slightly transverse (1.1x wider than long) with rounded sides and widest in basal half. Shining with no micro-punctures. Dorsal, lateral and marginal setae shorter than in A. orientalis. Elytra transverse (1.7x wider than long) with pubescence arising from asperate punctures. Apical fringe of bristles longer than the hairs on the rest of the elytra. Abdominal tergites with evenly spaced, relatively sparse asperate punctures. Paramere bilobed, each lobe fairly flat, at least toward apex, pegs concentrated in dense mass at apex (Fig. 116). Median lobe longer than paramere with truncate apex. Type material. Holotype 3: “Under plants at a stream edge / ETHIOPIA: Kaffa 28km. S. of Jimma 2,000 m’ xi. 1971 / R. O.S. Clark B.M. 1973 - 450 / HOLOTYPE Acylophorus makhoreae sp. n. 3 det. DA Lott, 2009 ” (BMNH). Paratypes 13 1 Ƥ: “ ETHIOPIA: ILUBADOR 10km. W. Bedelle 0825N 3618 E x. 1972 1,800 m. / R. O.S. Clark B.M. 1973 - 450 / PARATYPE Acylophorus makhoreae sp. n. det. DA Lott, 2009 ” (BMNH); 4: “Under plants & stones at edge stream / ETHIOPIA: Kaffa Belleta F. 2,100 m 40km. S.W. Jimma 1971 / R. O.S. Clark B.M. 1973 - 450 / PARATYPE Acylophorus makhoreae sp. n. det. DA Lott, 2009 ” (BMNH); 1 Ƥ: “ih red ref. / ETHIOPIA: Kaffa Jimma to Addis Rd. 0749- 370 iii. 1972. / R. O.S. Clark B.M. 1973 - 450 / PARATYPE Acylophorus makhoreae sp. n. det. DA Lott, 2009 ” (BMNH). Distribution and bionomics. All material seen so far comes from the south-west of Ethiopia (Fig. 142). I have also seen a female specimen collected at “ 8,000 ” feet from the Djem-Djem Forest to the west of Addis Ababa that may belong to this species. Most of the specimens were collected along streams. Comparative notes. Fairly distinct within the A. orientalis species group by virtue of the position of the antennal insertion, the broader, more asymmetric terminal segment of the maxillary palpi and the more transverse medial antennal segments. The form of the aedeagus and the arrangement of medial teeth on the mandibles are also useful characters. Etymology. Makhore was a legendary queen, who founded the kingdom of Jimma in the area where many of the type specimens were collected. The species name is the genitive case of a Latinised version of her name. Discussion. A. makhoreae has been placed in the A. orientalis group, because it lacks dense micropunctures on the head and pronotum. However, the form of the maxillary palpi, the mandibles and the aedeagus and the position of the antennal insertion point all suggest that it may be more closely related to some of the species in the A. densipennis group.Published as part of Lott, Derek A., 2010, The species of Acylophorus Nordmann (Coleoptera: Staphylinidae: Staphylininae) in continental sub-Saharan Africa, pp. 1-51 in Zootaxa 2402 on page 15, DOI: 10.5281/zenodo.27590
Acylophorus tshuapensis Lott, new species
No full textAcylophorus tshuapensis Lott, new species (Figs 7, 57, 83, 115) Description. Length 8mm. Head black. Pronotum chestnut brown. Elytra brown. Abdomen dark and iridescent. Legs pale. Antennae pale with segments II to VIII slightly infuscated. The maxillary palpi are uniformly pale. Head somewhat small (pronotum 1.8x wider than head), as long as wide with rounded, not very pronounced temples and antennal insertion close to front margin, but separated by narrow pigmented strip (Fig. 7). Eyes relatively small. Micro-punctures very sparse. Dense short pubescence behind eyes. Two pairs of interocular setae arising from foveate punctures much closer to eyes than each other. A line of five postocular setae plus an additional short seta on hind margin of eye. Maxillary palpi with terminal segment very elongate, densely pubescent, and symmetric, longer than glabrous penultimate segment which is also elongate (Fig. 57). First segment of antenna as long as next three. Segments I to IX elongate, X transverse (Fig. 83). Pronotum only slightly transverse (1.1x wider than long) with rounded sides and widest in basal half, front margins somewhat produced at sides. Shining with no micro-punctures. One pair of dorsal setae. One pair of lateral setae. Marginal setae long. Elytra transverse (1.6x wider than long) with pubescence arising from relatively fine asperate punctures. Apical fringe of thick bristles longer than the hairs on the rest of the elytra. Abdominal tergites with long semi-erect pubescence arising from asperate punctures that are denser at the base of each tergite. Hairs longer than marginal fringe of bristles. Paramere entire with wide central groove at apex, suggesting two parallel lobes that have become fused together (Fig. 115). Median lobe much longer than paramere and strongly expanded at apex. Type material. Holotype 3: “ COLL. MUS. CONGO Tshuapa: Flandria 18 -x- 1946 Rév. P. Hulstaert / R. DET. UU 5694 / Acylophorus sp. n / HOLOTYPE Acylophorus tshuapensis sp. n. 3 det. DA Lott, 2009 ” (IRSNB). Distribution and bionomics. Known only from the holotype taken in the Democratic Republic of Congo (Fig. 142). Comparative notes. Fairly distinct within the A. orientalis species group by virtue of its small eyes, more sinuate front margin to the pronotum and the fused lobes of the paramere. The medial segments of the antennae and the terminal segment of the maxillary palpi are also more elongate than in the other species of the group. Etymology. The specific name is the masculine form of an adjective meaning “from Tshuapa”.Published as part of Lott, Derek A., 2010, The species of Acylophorus Nordmann (Coleoptera: Staphylinidae: Staphylininae) in continental sub-Saharan Africa, pp. 1-51 in Zootaxa 2402 on pages 14-15, DOI: 10.5281/zenodo.27590
Acylophorus janaki Lott, new species
No full textAcylophorus janaki Lott, new species (Figs 4–10) Description. Length 6.5–7.5 mm. Body black. Abdominal tergites with transverse microsculpture, but not iridescent. Antennae dark brown except for paler base of segment I. Segment XI also usually pale brown. Maxillary palpi pale brown with slightly darker terminal segment. Femora pale brown. Tibiae contrastingly dark brown. Tarsi pale brown. Head rounded, large (pronotum 1.6x wider than head), as wide as long with temples rounded behind somewhat large eyes (Fig. 4). Head produced in front of antennal insertion, covered with micro-punctures. Short dense pubescence behind eyes. Two pairs of short and pale interocular setae arising from foveate punctures much closer to eyes than each other. A line of four postocular setae visible from above on each side. No additional seta on hind margin of eye. Right mandible with large medial tooth in front of flange, no teeth on left mandible (Fig. 5). Maxillary palpi with terminal segment pubescent, more rounded on outer margin than inner margin and asymmetric, longer than glabrous penultimate segment which is triangular (Fig. 6). First segment of antenna as long as next four. Segments I to VII elongate, IX to X transverse (Fig. 7). Pronotum relatively narrow with sides less rounded, almost quadrate (1.1x wider than long) and widest toward basal half (Fig. 4), covered with micro-punctures, but more sparsely than on head. Dorsal, lateral and marginal setae relatively short. Elytra only slightly transverse (1.2x wider than long) (Fig. 4) with short pale pubescence that is not shining, arising from fine dense asperate punctures. Apical fringe of bristles rather short, not much longer than hairs on rest of elytra. Abdominal tergites with short, sparse pubescence, barely overlapping in centre of tergite III, though longer on apical tergites. Punctures evenly distributed across each tergite (Fig. 8). Male with apex of sternite IX entire. Paramere bilobed and divergent, twisted round side margin of median lobe, which is flattened and broadly incised at apex (Fig. 9). Pegs confusedly arranged at apex of each lobe (Fig 10). Type material. Holotype 3: “ South Africa, KwaZulu-Natal Pietermaritzburg, Queen Elizabeth Park, 29 O 34.157 ’S 30 O 19.299 ’E, 22.xi. 2006, J Janák leg / stream banks stepping on / Acylophorus? allardi Levasseur 3 det DA Lott, 2009 / HOLOTYPE Acylophorus janaki sp. n. 3 det DA Lott, 2010 ” (TMP). Paratypes 4313 Ƥ same data as holotype (cJanák, cLott). Comparative notes. This species was confused with A. allardi Levasseur by Lott (2010), but is distinct from that species in several characters. A. janaki has pale, dull straw-coloured pubescence on the elytra unlike the bright yellow pubescence on the elytra and abdomen of A. allardi. The punctures on each abdominal tergite of A. janaki are evenly distributed, while in A. allardi they are denser at the base of each tergite. In external characters, A. janaki resembles more closely A. congoensis Cameron, but can be distinguished by the less transverse elytra and the longer, more slender aedeagus (see Figs 9 and 11). Etymology. This species is named after Jiří Janák, who collected the type series. The species name is the genitive case of a Latinised version of his name.Published as part of Lott, Derek A., 2012, Further studies of African Acylophorus Nordmann (Coleoptera: Staphylinidae: Staphylininae), pp. 39-52 in Zootaxa 3168 on pages 43-44, DOI: 10.5281/zenodo.27978
Acylophorus micans Lott, new species
No full text<i>Acylophorus micans</i> Lott, new species <p>(Figs 12, 62, 88, 120)</p> <p> <b>Description.</b> Length 4.5– 5mm. Head and elytra black. Pronotum dark brown. Abdominal tergites dark brown and iridescent. Appendages all pale, last segment of maxillary palpi sometimes darker.</p> <p>Head of average size (pronotum 1.7x wider than head), 1.1x wider than long with rounded well developed temples and pigmented area produced well in front of antennal insertion (Fig. 12). Eyes relatively small. Dorsal surface of head covered with dense micro-punctures. Dense pale pubescence behind eyes. Two pairs of interocular setae arising from foveate punctures much closer to eyes than each other. Four postocular setae visible on each side, additional seta on hind margin of eye absent. Maxillary palpi with terminal segment pubescent, markedly asymmetric, longer than glabrous penultimate segment which is broadly triangular (Fig. 62). First segment of antenna as long as next six. Segments I to II elongate, IV to X transverse (Fig. 88).</p> <p>Pronotum slightly transverse (1.2x wider than long) with sides well rounded, widest in basal half, covered with dense micro-punctures. One pair of dorsal setae and one pair of lateral setae. Marginal setae long. Elytra transverse (1.7x wider than long) with close, bright yellow pubescence arising from asperate punctures finer. Apical fringe of bristles longer than pubescence on other parts of the elytra. Pubescence on abdominal tergites long arising from asperate punctures that are stronger and sparser than on elytra. Abdomen appears wide because of overall small body size.</p> <p>Apex of sternite IX broadly rounded. Paramere bilobed, each lobe twisted round side margin of median lobe, pegs confusedly arranged along inner half, basal lip absent (Fig. 120). Median lobe of aedeagus not much longer than paramere.</p> <p> <b>Type material. Holotype</b> 3: “ Ivory Coast 7–17km. W. Abidjan I-63 / Coll. W.L. Brown Jr. leg. / HOLOTYPE <i>Acylophorus micans</i> <b>sp. n.</b> 3 det. DA Lott, 2009” (FMNH). <b>Paratypes</b> 1Ƥ: same data as holotype; 131Ƥ (mounted on same card): “Mts. De Cristal Gabon / gabonensis Fvl. / R.I.Sc.N.B. 17.479 Coll. et det. A. Fauvel / PARATYPE <i>Acylophorus micans</i> <b>sp. n.</b> 3 det. DA Lott, 2009” (IRSNB); 2: “Loango Gabon / Coll. et det. A. Fauvel A <i>cylophorus gabonensis</i> Fauv. R.I.Sc.N.B. 17.479 / PARATYPE <i>Acylophorus micans</i> <b>sp. n.</b> det. DA Lott, 2009” (IRSNB). Note that Fauvel gave this species the name <i>gabonensis</i> on his specimen labels, but he never published a description.</p> <p> <b>Further material examined. CAMEROON</b>: Missellele near Mt Cameroon, F Zumpt, 1936, 1Ƥ (FMNH).</p> <p> <b>Distribution and bionomics.</b> Known so far from Côte d’Ivoire, Cameroon and Gabon (Fig. 143). There are no data on habitat.</p> <p> <b>Comparative notes.</b> Somewhat similar to <i>A. densipennis</i> by virtue of the bright yellow pubescence on the elytra, but smaller in overall size and with relatively small eyes and long apical bristles on the elytra. The aedeagus is also completely different. Much smaller than other species in the group with small eyes. <b>Etymology.</b> The specific name is a present participle meaning “glittering” and refers to the iridescent abdomen.</p>Published as part of <i>Lott, Derek A., 2010, The species of Acylophorus Nordmann (Coleoptera: Staphylinidae: Staphylininae) in continental sub-Saharan Africa, pp. 1-51 in Zootaxa 2402</i> on pages 19-20, DOI: <a href="http://zenodo.org/record/275907">10.5281/zenodo.275907</a>
Acylophorus uhligi Lott, new species
No full textAcylophorus uhligi Lott, new species (Figs 12–16) Description. Length 7–8 mm. Body black. Abdominal tergites with transverse microsculpture, but not iridescent. Antennae dark brown except for paler segments I and XI. Maxillary palpi pale brown with slightly darker terminal segment. Femora and tibiae dark brown. Tarsi reddish brown. Head rounded, large (pronotum 1.6x wider than head), as wide as long with temples rounded behind somewhat large eyes (Fig. 12). Head produced in front of antennal insertion, covered with micro-punctures. Short dense pubescence behind eyes. Two pairs of short and pale interocular setae arising from foveate punctures much closer to eyes than each other. A line of four postocular setae visible from above on each side. No additional seta on hind margin of eye. Maxillary palpi with terminal segment pubescent, more rounded on outer margin than inner margin and asymmetric, longer than glabrous penultimate segment which is triangular (Fig. 13). First segment of antenna as long as next five. Segments I to VI elongate, IX to X transverse (Fig. 14). Pronotum relatively narrow with sides less rounded, almost quadrate (1.1x wider than long) and widest toward basal half (Fig. 12), covered with micro-punctures, but more sparsely than on head. Dorsal, lateral and marginal setae relatively short. Elytra strongly transverse (1.65x wider than long) (Fig. 12) with short pale pubescence that is not shining, arising from fine dense asperate punctures. Apical fringe of bristles longer than hairs on rest of elytra. Abdominal tergites with short, sparse pubescence, barely overlapping in centre of tergite III, though longer on apical tergites. Punctures evenly distributed across basal tergites, more sparsely distributed toward apex of tergite VII. Male with apex of sternite IX entire. Paramere bilobed and divergent, twisted round side margin of median lobe, which is flattened and broadly incised at apex (Fig. 15). Pegs confusedly arranged at apex of each lobe (Fig 16). Type material. Holotype 3: “ ZIMBABWE 7–9. xii. 1993 18 O 17 ’S / 32 O 43 ’E Nyanga NP: Rhodes Dam, reed + fern sievings, leg M. Uhlig / HOLOTYPE Acylophorus uhligi sp. n. 3 det. DA Lott” (ZMBH). Paratypes 3 Ƥ same data as holotype (ZMBH). Comparative notes. This species is similar to A. janaki, but can be distinguished by the strongly transverse elytra. The aedeagi are similar except for an apparent difference in the shape of the apex of the median lobe and a sparser distribution of pegs on the paramere. However, the extent of infraspecific variation in these features is as yet unknown. Etymology. This species is named after Manfred Uhlig, who collected the type series. The species name is the genitive case of a Latinised version of his name.Published as part of Lott, Derek A., 2012, Further studies of African Acylophorus Nordmann (Coleoptera: Staphylinidae: Staphylininae), pp. 39-52 in Zootaxa 3168 on pages 45-46, DOI: 10.5281/zenodo.27978
Acylophorus setiger Lott, new species
No full text<i>Acylophorus setiger</i> Lott, new species <p>(Figs 22, 71, 98, 136)</p> <p> <b>Description.</b> Length 6mm. Body brown, head darker. Legs pale. Antennae pale with middle segments darker. Palpi all pale.</p> <p>Head of average size (pronotum 1.7x wider than head), 1.1x wider than long with well developed temples behind large eyes (Fig. 22). Pigmented area of head extends in front of antennal insertion. Micro-punctures very sparse and concentrated toward front of head. Short pubescence behind eyes. Three pairs of interocular setae and a line of four postocular setae visible from above on each side. Maxillary palpi with two terminal segments pubescent, terminal segment very elongate, slightly asymmetric, longer than penultimate segment, which is also elongate (Fig. 71). First segment of antenna as long as next five. Segments I to III elongate, VII to X transverse (Fig. 98).</p> <p> Pronotum slightly transverse (1.2x wider than long) with sides well rounded, widest in basal half. Shining with no micro-punctures. One pair of dorsal setae and one pair of lateral setae. Marginal setae long and more numerous than in <i>A. orientalis</i>. Elytra very transverse (1.9x wider than long) with sparse pubescence and coarse asperate punctures which are stronger than in <i>A. orientalis</i>. Apical bristles much longer than hairs on the rest of the elytra. Abdominal tergites also with long, sparse pubescence. Punctures much sparser on apical half of each tergite than on basal half. Apical fringe of bristles on each tergite of two distinct lengths, the shorter bristles more numerous than the longer bristles, as in <i>A. trigonocephalus</i>.</p> <p>Male sternite IX with apex entire. Aedeagus with simple paramere, pegs arranged around margin with one or two scattered inside (Fig. 136). Median lobe with apex barely expanded, only just surpassing paramere.</p> <p> <b>Type material. Holotype</b> 3: “ Paratype / Mioko Fernando Poo 1700–2000m 8.XII.51 / De Keyser Lopdome et A. Villiers / PARATYPE / M. Cameron Bequest B.M. 1955-147 / <i>Acylophorus brevipennis</i> Cam. Cotype / HOLOTYPE <i>Acylophorus setiger</i> <b>sp. n.</b> 3 det. DA Lott, 2009” (BMNH).</p> <p> Note that Cameron gave this species a manuscript name <i>brevipennis</i> and labelled types accordingly, but he never published a description.</p> <p> <b>Distribution and bionomics.</b> Only known so far from a single specimen taken on the island of Bioko (formerly known as Fernando Po) in Equatorial Guinea (Fig. 147). There are no data on habitat.</p> <p> <b>Comparative notes.</b> Similar to <i>A. trigonocephalus</i>, but with short, very transverse elytra and distinctive aedeagus with paramere that is not bilobed. The paler colour may also be diagnostic.</p> <p> <b>Etymology.</b> The specific name is the masculine form of an adjective meaning “bristly” and refers to the long setae on the body.</p>Published as part of <i>Lott, Derek A., 2010, The species of Acylophorus Nordmann (Coleoptera: Staphylinidae: Staphylininae) in continental sub-Saharan Africa, pp. 1-51 in Zootaxa 2402</i> on pages 30-31, DOI: <a href="http://zenodo.org/record/275907">10.5281/zenodo.275907</a>
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