Philonthus (Philonthus) hapalemur, Hromádka & Janák, 2011

Hromádka, Lubomír & Janák, Jiří, 2011, Philonthus hapalemur sp. nov. and redescription of P. plasoni from Madagascar (Coleoptera: Staphylinidae: Philonthina), Acta Entomologica Musei Nationalis Pragae 51 (1), pp. 137-143 : 138-141

Philonthus (Philonthus) hapalemur sp. nov.

( Figs. 1–9 )

Type locality. Madagascar, Montagne d’Ambre, Antsahampano.

Type material. HOLOTYPE: J, ‘ MADAGASCAR 1075m, Antsiranana, Antsahampano Montagne d´Ambre , Malaise Trap, 15-19.xii.2004, 12.53°S 49.17°E, D.C. Lees BMNH (E) 2004-46 // Philonthus hapalemur sp. n. Hromádka & Janák det.2008// [red oblong printed label]’ ( BMNH) . PARATYPES: 2JJ, same label data as holotype ( BMNH, LHPC) ; 1 J ‘ Madagascar Est, 1100-1200m, Massiv Ambondrombe, J. Janák + P. Moravec lgt. // Ikoka env. 10.3.1996, plantations, crête Amboasa, camp 1’ ( JJRC) ; 1J ‘ Madagascar, Antsiranana prov., Ambohitra 30.11.- 2.12.1996, Ivo Jeniš leg.‘ ( JJRC) ; 1 J ‘ Madagascar Goudot // hospes var. verisim . // I.Sc. N.B.17.479, Coll. et det. A. Fauvel’ ( IRSNB) ; 1 J ‘ Madagascar: Province d‘Antananarivo, botanic garden near the entrance to Andasibe National Park, 18-29 June 2001 // 18° 55.58‘ S, 48° 24.47‘ E, collector: R. Harin‘Hala, California Acad. of Sciences , malaise trap-tropical forest, elev 1025 m, MA-01-08B-06 // CASENT 8040721’ ( CAS) ; 1 ♀, same label data, but ‘CASENT 8039050’ ( CAS) ; 1 J ‘ Madagascar: Province d‘Antananarivo, botanic garden near the entrance to Andasibe National Park, 30 April-14 May 2001 // 18° 55.58‘ S, 48° 24.47‘ E, collector: R. Harin‘Hala, California Acad. of Sciences , malaise trap-tropical forest, elev 1025 m, MA-01-08B-02 // CASENT 8026460’ ( CAS) ; 1 J ‘ Madagascar: Province d‘Antananarivo, botanic garden near the entrance to Andasibe National Park, 31 July-15 Aug 2001 // 18° 55.58‘ S, 48° 24.47‘ E, collector: R. Harin‘Hala, California Acad. of Sciences , malaise trap-tropical forest, elev 1025 m, MA-01-08B-09 // CASENT 8026596’ ( CAS) ; 1 J ‘ Madagascar: Province Diego-Suarez , dry forest 7 km N of Joffreville, 360 m, 7-27 April 2001 // 12° 20‘ S, 49° 15‘ E, R. Harin‘Hala collector, malaise trap, MA-01-07-10 // CASENT 8026054‘ ( CAS) ; 5 JJ same label data, but ‘CASENT 8026063’ / ‘CASENT 8026065’ / ‘CASENT 8026068’ / ‘CASENT 8026077’ / ‘CASENT 8026081’ ( CAS, JJRC); 1 ♀ ‘ Madagascar: Province Diego-Suarez, Sakalava Beach , dwarf littoral forest, 10 m, 20-28 July 2001 // 12° 15‘ 46‘‘ S, 49°23′51″E, R. Harin‘Hala collector, malaise trap - across sandy trail, MA-01-04B-15 // CASENT 8038518’ ( CAS), 1 ♀ same label data, but ‘CASENT 8038502’ ( CAS) ; 1 J ‘ Madagascar: Toliara Prov., Parc Nat. d‘Andohahela, Forêt d‘Ambohibory , 1.7 km 61° ENE Tsimelahy, 36.1 km 308° NW Tolagnaro, 16-20 I 2002 // 24° 55‘ 48‘‘ S, 46° 38‘ 44‘‘ E, coll. Fisher, Griswold et al., California Acad. of Sciences , at light - in tropical dry forest, elev 300, code: BLF4919 // CASENT 8031890’ ( CAS) .

Description. Body length 7.8-8.3 mm, length of fore body (to end of elytra) 3.5–3.9 mm. Body entirely black, elytra with slight bronze sheen, clypeus narrowly yellowish brown along anterior margin and around antennal sockets, maxillary and labial palpi dark brown, palpomere 1 lighter, antennae black, base of antennomere 2 yellowish brown, legs black, femora of anterior legs brown.

Head distinctly transverse, wider than long (w/l ratio 1.35/1.00 = 1.35), slightly narrowed posteriad. Eyes large and slightly convex, distinctly longer than temples (eye length/temple length ratio 0.60/0.25 = 2.40). Area between eyes with 4 coarse punctures, medial interocular punctures slightly shifted to the front, distance between medial punctures five times distance between medial and lateral puncture. Temporal area with several variably large punctures. Surface with very fine and dense microsculpture consisting of mostly transverse waves.

Antennae very long, exceeding the posterior margin of pronotum by the length of combined antennomeres 10–11 when reclined. Antennomere 1 almost as long as antennomeres 2–3 combined, distinctly longer than antennomere 11. Relative length of antennomeres: 1 = 0.48; 2 = 0.25; 3 = 0.30; 4–7 = 0.20; 8–10 = 0.18; 11 = 0.30.

Pronotum longer than wide (l/w ratio 1.55/1.40 = 1.11), bulging, parallel-sided, lateral margins in anterior fourth slightly sinuate. Posterior angles strongly rounded. Each dorsal row with 5 coarse, equidistant punctures, punctures 5 distant from the posterior margin about the length of antennomere 1. Each sublateral row with 2 coarse punctures, punctures 1 on the same level as punctures 3 in dorsal row. Lateral margins with several bristles of variable length. Microsculpture similar to that on head.

Scutellum very densely and coarsely punctate, punctures somewhat larger than eye facets, distance between punctures smaller than their diameter.

Elytra wider than long (w/l ratio 2.15/1.95 = 1.10), slightly widened posteriad. Punctation sparser and coarser than that on scutellum. Surface without microsculpture. Setation greyish.

Abdomen wide, distinctly narrowed from fifth visible tergite towards apex. Elevated area between two basal lines on first three visible tergites coarsely and densely punctate.

Legs. Metatibia as long as metatarsus, meso- and metatibiae with several long bristles on external side. Metatarsomere 1 as long as metatarsomere 5, relative length on metatarsomeres: 1 = 0.30; 2–4 = 0.18; 5 = 0.30.

Abdomen. Punctation of basal portion of all tergites similar to that on elytra, gradually sparser towards posterior margin of each tergite. Surface without microsculpture. Setation similat to that on head.

Male. Protarsomeres 1–3 slightly dilated and sub-bilobed, each covered with modified pale setae ventrally, protarsomere 4 slightly narrower than preceding ones. Sternite VIII as in Fig. 8 , sternite IX as in Fig. 5 . Aedeagus ( Figs. 1, 2, 4 ): Median lobe with sides subparallel or slightly narrowed apicad, in apical quarter distinctly flattened from both sides and ending in subacute apex, paramere long, apical part with about 15 sensory peg setae and about 10 short fine setae ( Figs. 3, 6 ).

Female. Protarsomeres 1–3 less dilated than those of male, each covered with modified pale setae ventrally. Tergite X minutely notched apically ( Fig. 7 ), genital segment with gonocoxites as in Fig. 9 .

Differential diagnosis. Based on external characters and morphology of the genitalia, it is not possible to assign P. hapalemur sp. nov. to any species groups hitherto defined. It differs from all Afrotropical and Madagascan species in the shape of aedeagus that has the median lobe with subparallel sides and paramere slightly resembling that of P. jocquei Lecoq, 1996 described from the Comoros. However, P. hapalemur sp. nov. differs from the latter species in the parallel-sided pronotum and in the narrow apical part of the median lobe that is distinctly longer (compare with LECOQ 1996: Figs. 56, 58).

Etymology. The name of this species, a noun in apposition, is a Latin generic name of the Malagasy Gray Gentle Lemur Hapalemur griseus (Link, 1795).

Distribution. Madagascar.

Figures

Figs. 1–9. Philonthus hapalemur sp. nov. 1 – aedeagus, ventral view, 2 – aedeagus, lateral view, 3, 6 – apex of paramere with sensory peg setae, ventral view, 4 – aedeagus, ventral view, transmitted light, 5 – male sternite IX, 7 – female tergite X, 8 – apical portion of male sternite VIII, 9 – gonocoxite of female genital segment. 1–3, 5: holotype, 4, 6–9: paratype. Scales: 0.5 mm (1 = 2, 4, 5, 7–9), 0.25 mm (3) and 0.1 mm (6).