Euspilotus (Neosaprinus) perrisi ( Marseul, 1872 )

Lackner, Tomáš, 2010, Review of the Palaearctic genera of Saprininae (Coleoptera: Histeridae), Acta Entomologica Musei Nationalis Pragae (suppl.) 50, pp. 1-254 : 106-111

Euspilotus (Neosaprinus) perrisi ( Marseul, 1872)

( Figs. 35 , 53 , 74 , 88 , 117 , 162–167 , 178 , 318–338 )

Saprinus perrisi Marseul, 1872: 415 . Saprinus perrisi: SCHMIDT (1885a) : 308. Saprinus pseudognathoncus Reitter, 1904: 34 . Synonymized by DAHLGREN (1968): 86. Saprinus pseudognathoncus: REICHARDT (1941) : 184, 240, Fig. 82P; IABLOKOFF- KHNZORIAN (1964): 109. Euspilotus (Neosaprinus) perrisi: DAHLGREN (1968) : 86, Figs. 24 , 4B,C; KRYZHANOVSKIJ & REICHARDT (1976): 124,

Figs. 170–173 ; VIENNA (1980): 128, Figs. 48, 49 ; MAZUR & KASZAB (1980): 48, Figs. 25 A–D; MAZUR (1984):

71; MAZUR (1997): 238; YÉLAMOS (2002): 293, Figs. 145 , 146 A–E; MAZUR (2004): 91.

Note. Sensory structures of the antennal club and spermatheca were studied by De Mar zo & Vienna (1982a,b). Larva was described by Kal ashian (1996).

Type locality. France, Corsica.

Type material examined. Saprinus perrisi . SYNTYPE: ♀, ‘ Saprinus / perrisi m / Corse [illegible] / Aug. [?] [18]73 [round label, written] // Pokoy [illegible] [round, written label glued onto a mounting card] // Museum Paris / Coll. De Marseul / 28490 [written] // TYPE [red-printed label]’ ( MNHN).

Saprinus pseudognathoncus . HOLOTYPE: ♁, male genitalia extracted and glued to the same mounting card as the specimen: ‘Caucas. / Occid. / Novoross. / 15.vi.[18]99. / Starck [printed-written] // pseudognathon- / cus m. 1904. Typ [written] // coll. Reitter [printed] // Sapr. perrisi / Mars. / G Dahlgren det. [printed-written] // Monotypus 1904 / Saprinus / pseudognathoncus / Reitter [red-framed printed-written]’ ( HNHM).

Additional material examined. BULGARIA: Harmanli , 27.vi.1975, 4♀♀ 4♁♁, A. Olexa lgt .; Arkutino , vii.1972, 1 ♁ 1♀, A. Olexa lgt . KAZAKHSTAN: Ak-Say (Alma-Ata), 1.vi.1974, 1♁, A. Olexa lgt . TAJIKISTAN: Babatag , Bulbulchashma, 23.v.1974, 3 ♀♀, A. Olexa lgt . UZBEKISTAN: Kara Tepe (Samarkand), 28.vi.1976, 1 ♀ 3 ♁♁, A. Olexa lgt. ( TLAN) .

Redescription. Body length: PEL: 2.75–3.45 mm; APW: 0.875 –1.125 mm; PPW: 2.05–2.375 mm; EL: 1.75–2.15 mm; EW: 2.50–3.0 mm.

Body ( Figs. 318–319 ) roundly oval, moderately convex, body color dark brown to black, cuticle not metallic, elytral apex slightly rufous; legs, antenna and mouthparts rufous.

Antennal scape ( Fig. 322 ) darker than antennal flagellum, with sparse punctures with few short setae; club round, without visible articulation, with thick short yellow sensilla intermingled with sparser longer sensilla; sensory structures of antennal club ( Fig. 35 ) in form of two sensory areas on ventral side and five vesicles; one of them is larger than other four; vesicles arranged in two pairs on ventral and dorsal side respectively.

Mouthparts. Mandibles ( Fig. 88 ) densely punctate, lateral margins rounded, mandibular apex acute; subapical tooth on left mandible obtuse; labrum ( Fig. 53 ) sparsely punctate, shallowly depressed medially; labral fold ( Fig. 74 ) weakly developed; two labral pits present, with one seta arising from each; terminal labial palpomere elongated, its width about one-third its length; mentum sub-trapezoid, anterior angles slightly produced, anterior margin shallowly emarginate medially, with shallow median notch ( Fig. 117 ), with several long setae; disc of mentum with sparse short setae; cardo of maxilla laterally with several short setae; stipes triangular, with three longer setae; terminal maxillary palpomere elongated, its width about one-fourth its length, about 2.5 times as penultimate.

Clypeus ( Fig. 322 ) rounded laterally, with round punctures, separated about twice their own diameter; frontal, supraorbital striae absent; postorbital stria vaguely impressed; frontal disc flat, with regular round punctures, separated by about their own to several times their diameter; eyes convex, well visible from above.

Pronotum ( Fig. 318 ) conspicuously narrower than elytra; pronotal sides on apical half almost straight, thence slightly convergent forwardly, on basal fourth strongly convergent; apical angles blunt; marginal pronotal stria well impressed, complete; pronotal disc slightly convex, with slight lateral depressions, pronotal foveae absent, disc laterally covered with coarse punctures, punctation weakened medially; pronotal hypomeron smooth; scutellum small, well visible.

Elytral epipleuron with regular round dense punctation; marginal epipleural stria complete, continued along elytral apex as incomplete apical stria; marginal elytral stria well impressed, obliterated near elytral apex. Humeral elytral stria weakly impressed on basal third, someti- mes double; inner subhumeral stria present as short median fragment; elytra with four well impressed dorsal striae 1–4, in small punctures, all about the same length, reaching about half of elytral length apically; fourth dorsal elytral stria curved towards sutural elytral stria, but not connected with it; sutural elytral stria shortened on basal third and apical sixth, in round punctures, not continuous with apical elytral stria; between sutural elytral stria and elytral suture a row of minute punctures present. Elytral disc entirely punctate, on apical half punctures denser and coarser, separated by about their own diameter; on basal half the punctation much finer and sparser.

Propygidium almost completely exposed, transverse, with deep coarse punctures; pygidium with sparser oblong punctures separated by about their own diameter, becoming smaller and sparser apically. Sexually dimorphic species, female with deeply impressed curious pygidial sulci ( Figs. 162–167 ).

Anterior margin of median portion of prosternum ( Fig. 323 ) rounded, densely punctate; preapical foveae vaguely impressed, linked by vague transverse sulcus; prosternal process distinctly convex, with sparse punctures; lateral prosternal striae straight, parallel, terminating on twothirds of process’ length apically; carinal prosternal striae on prosternal apophysis subparallel, thence strongly divergent anteriorly, parallel, terminating in vague pre-apical foveae.

Anterior margin of mesoventrite ( Fig. 325 ) shallowly emarginate medially; discal marginal mesoventral stria well impressed, carinate; disc of mesoventrite flat, with sparse punctures separated up to several times their own diameter; meso-metaventral suture vaguely impressed; meso-metaventral sutural stria absent.

Intercoxal disc of metaventrite ( Fig. 325 ) with a shallow longitudinal median depression in male, disc medially almost smooth, along posterior margin several rows of scattered punctures present; lateral metaventral stria well impressed, carinate, straight, almost reaching metacoxa; lateral disc of metaventrite ( Fig. 324 ) with setiferous punctures separated about their own diameter; metepisternum + fused metepimeron ( Fig. 324 ) evenly covered with much coarser and denser punctation, punctures separated less than half time their own diameter; metepisternal stria deeply impressed.

Intercoxal disc of first abdominal sternite broad, lateral stria vaguely impressed; disc with dense punctation, becoming finer and sparser medially.

Protibia ( Fig. 326 ) slightly dilated, outer margin with about ten low teeth topped with short thin denticle, diminishing in size in proximal direction; setae of outer row regular, short; protarsal groove deep; anterior protibial stria shortened apically; setae of median row shorter but denser than those of outer row, terminating in several tarsal denticles; protibial spur well developed, bent, growing out from apical margin of protibia; outer part of posterior surface ( Fig. 326 ) obscurely variolate, separated from substrigulate median part of posterior surface by vague boundary and row of minute denticles present on basal half; posterior protibial stria complete, with tiny sclerotized setae turning into three inner posterior denticles; inner row of setae double.

Mesotibia ( Fig. 327 ) slender, outer margin with two rows of short denticles; setae of outer row regular, sparse, about as long as denticles themselves; median row of setae double, setae shorter but denser than those of outer row; posterior mesotibial stria almost complete; anterior surface of mesotibia coriarious-punctate; anterior mesotibial stria complete, terminating in two tiny sclerotized setae; mesotibial spur short; claws of apical tarsomere slightly bent, longer than half its length; metatibia slenderer than mesotibia, in all aspects similar to it, but denticles on outer margin even sparser.

Male genitalia. Eighth sternite ( Figs. 328–331 ) completely fused, laterally with dense rows of long setae, apically with large inflatable membrane (velum) ( Fig. 331 ); eighth tergite and eighth sternite not fused laterally ( Fig. 330 ); eighth tergite comparably short. Ninth tergite ( Figs. 332–333 ) conspicuously broader than small tenth tergite; spiculum gastrale ( Figs. 337–338 ) widely expanded on apical end, on basal end not expanded; basal end dilated from ventral view. Aedeagus ( Figs. 334–336 ) slender; basal piece of aedeagus rather long, ratio of its length: length of parameres 1: 2.10; parameres fused almost along their entire length with a small circular slit for ejaculatory duct of median lobe; aedeagus apically slightly curved ventrad ( Fig. 335 ).

Figures

Figs. 29–38. Saprininae, sensory structures of the antennal club (vesicles marked with grey; sensory areas shaded): 29 – Xenophilothis choumovitchi (Thérond, 1965); 30 – Zorius funereus (Schmidt, 1890); 31 – Alienocacculus neftensis (Olexa, 1984); 32 – Philothis (Philothis) arcanus Reichardt, 1930; 33 – Philothis (Atavinus) atavus (Reichardt, 1931); 34 – Philothis (Farabius) hexeris Reichardt, 1930; 35 – Euspilotus (Neosaprinus) perrisi (Marseul, 1872); 36 – Gnathoncus rotundatus (Kugelann, 1792); 37 – Eremosaprinus vlasovi (Reichardt, 1941); 38 – Microsaprinus therondianus (Dahlgren, 1973).

Figs. 47–73. Saprininae, labral structures, dorsal view (left half showing external and right half showing internal structures): 47 – Alienocacculus neftensis (Olexa, 1984); 48 – Ammostyphrus cerberus Reichardt, 1924; 49 – Chalcionellus amoenus (Erichson, 1834); 50 – Chivaenius kryzhanovskii Olexa, 1980; 51 – Eopachylopus ripae (Lewis, 1885); 52 – Eremosaprinus vlasovi (Reichardt, 1941); 53 – Euspilotus (Neosaprinus) perrisi (Marseul, 1872); 54 – Exaesiopus grossipes grossipes (Marseul, 55); 55 – Gnathoncus rotundatus (Kugelann, 1792); 56 – Hypocaccus (Hypocaccus) rugiceps (Duftschmid, 1805); 57 – Hypocacculus (Hypocacculus) metallescens (Erichson, 1834); 58 – Hypocacculus (Colpellus) praecox (Erichson, 1834); 59 – Hypocacculus (Nessus) rubripes (Erichson, 1834); 60 – Microsaprinus therondianus (Dahlgren, 1973); 61 – Myrmetes paykulli Kanaar, 1979; 62 – Paravolvulus lateristriatus (Solskij, 1876); 63 – Philothis (Philothis) arcanus Reichardt, 1930; 64 – Philothis (Atavinus) atavus (Reichardt, 1931); 65 – Philothis (Farabius) hexeris Reichardt, 1930; 66 – Pholioxenus phoenix (Reichardt, 1930); 67 – Reichardtiolus duriculus (Reitter, 1904); 68 – Saprinus (Saprinus) semistriatus (Scriba, 1790); 69 – Saprinus (Hemisaprinus) subvirescens (Ménétries, 1832); 70 – Saprinus (Phaonius) pharao (Marseul, 1855); 71 – Styphrus corpulentus Motschulsky, 1845; 72 – Xenonychus tridens (Jacquelin-Duval, 1852); 73 – Xenophilothis choumovitchi (Thérond, 1965).

Figs. 74–78. Saprininae, labrum, frontal view: 74 – Euspilotus (Neosaprinus) perrisi (Marseul, 1872); 75 – Pholioxenus phoenix (Reichardt, 1930); 76 – Philothis (Atavinus) atavus (Reichardt, 1931); 77 – Philothis (Farabius) hexeris Reichardt, 1930; 78 – Ctenophilothis chobauti (Théry, 1900).

Figs. 81–89. Saprininae, mandibles, ventral view: 81 –Alienocacculus neftensis (Olexa, 1984); 82 – Ammostyphrus cerberus Reichardt, 1924; 83 – Chalcionellus amoenus (Erichson, 1834); 84 – Chivaenius kryzhanovskii Olexa, 1980; 85 – Ctenophilotis chobauti (Théry, 1900); 86 – Eopachylopus ripae (Lewis, 1885); 87 – Eremosaprinus vlasovi (Reichardt, 1941); 88 – Euspilotus (Neosaprinus) perrisi (Marseul, 1872); 89 – Exaesiopus grossipes grossipes (Marseul, 1855).

Figs. 109–141. Saprininae, anterior margin of mentum, ventral view: 109 – Alienocacculus neftensis (Olexa, 1984); 110 – Ammostyphrus cerberus Reichardt, 1924; 111 – Axelinus ghilarovi Kryzhanovskij, 1976; 112 – Chalcionellus amoenus (Erichson, 1834); 113 – Chivaenius kryzhanovskii Olexa, 1980; 114 – Ctenophilotis chobauti (Théry, 1900); 115 – Eopachylopus ripae (Lewis, 1885); 116 – Eremosaprinus vlasovi (Reichardt, 1941); 117 – Euspilotus (Neosaprinus) perrisi (Marseul, 1872); 118 – Exaesiopus grossipes grossipes (Marseul, 1855); 119 – Gnathoncus rotundatus (Kugelann, 1792); 120 – Hypocaccus (Hypocaccus) rugiceps (Duftschmid, 1805); 121 – Hypocaccus (Baeckmanniolus) dimidiatus dimidiatus (Illiger, 1807); 122 – Hypocacculus (Hypocacculus) metallescens (Erichson, 1834); 123 – Hypocacculus (Colpellus) praecox (Erichson, 1834); 124 – Hypocacculus (Nessus) rubripes (Erichson, 1834); 125 – Microsaprinus therondianus (Dahlgren, 1973); 126 – Myrmetes paykulli Kanaar, 1979; 127 – Paravolvulus ovillum (Solskij, 1876); 128 – Philothis (Philothis) arcanus Reichardt, 1930; 129 – Philothis (Atavinus) atavus (Reichardt, 1931); 130 – Philothis (Farabius) hexeris Reichardt, 1930; 131 – Pholioxenus phoenix (Reichardt, 1930); 132 – Reichardtiolus duriculus (Reitter, 1904); 133 – Saprinillus paromaloides Kryzhanovskij, 1974; 134 – Saprinus (Saprinus) semistriatus (Scriba, 1790); 135 – Saprinus (Hemisaprinus) subvirescens (Ménétries, 1832); 136 – Saprinus (Phaonius) pharao (Marseul, 1855); 137 – Styphrus corpulentus Motschulsky, 1845; 138 – Turanostyphrus ignoratus Tishechkin, 2005; 139 – Xenonychus tridens (Jacquelin-Duval, 1852); 140 – Xenophilotis choumovitchi (Thérond, 1965); 141 – Zorius funereus (Schmidt, 1890).

Figs. 162–167.Euspilotus (Neosaprinus) perrisi (Marseul, 1872), variability of female pygidial sulci. Figs. 162–165 after OLEXA (1975).

Figs. 174–178. Variability of the caudal end of spiculum gastrale:174 – Philothis (Farabius) hexeris Reichardt,1930; 175 – Hypocacculus (Nessus) rubripes (Erichson, 1834); 176 – Microsaprinus therondianus (Dahlgren, 1973); 177 – Saprinus (Saprinus) semistriatus (Scriba, 1790); 178 – Euspilotus (Neosaprinus) perrisi (Marseul, 1972).

Figs. 318–327. Euspilotus (Neosaprinus) perrisi (Marseul, 1872), SEM micrographs: 318 – habitus, dorsal view; 319 – ditto, ventral view; 320 – protibia, dorsal view; 321 – antennal club, ventral view; 322 – head, dorsal view; 323 – prosternum; 324 – lateral disc of metaventrite, metepisternum and fused metepimeron; 325 – mesoventrite + metaventrite; 326 – protibia, ventral view; 327 – metatibia, dorsal view.

Figs. 328–338. Euspilotus (Neosaprinus) perrisi (Marseul, 1872), male terminalia: 328 – 8th sternite and tergite, ventral view; 329 – ditto, dorsal view; 330 – ditto, lateral view; 331 – ditto, frontal view; 332 – 9th tergite and 10th tergite, dorsal view; 333 – ditto, lateral view; 334 – aedeagus, dorsal view; 335 – ditto, lateral view; 336 – apex of aedeagus, frontal view; 337 – spiculum gastrale, ventral view; 338 – ditto, lateral view

Figs. 9–28. Saprininae, sensory structures of the antennal club (vesicles marked with grey; sensory areas shaded): 9 – Saprinus (Saprinus) semistriatus (Scriba, 1790); 10 – Saprinus (Hemisaprinus) subvirescens (Ménétries, 1832); 11 – Myrmetes paykulli Kanaar, 1979; 12 – Styphrus corpulentus Motschulsky, 1845; 13 – Saprinus (Phaonius) pharao (Marseul, 1855); 14 – Ammostyphrus cerberus Reichardt, 1924; 15 – Chalcionellus amoenus (Erichson, 1834); 16 – Chivaenius kryzhanovskii Olexa,1980; 17 – Ctenophilothis chobauti (Théry,1900); 18 – Eopachylopus ripae (Lewis, 1885); 19 – Exaesiopus grossipes grossipes (Marseul, 1855); 20 – Hypocaccus (Hypocaccus) rugiceps (Duftschmid, 1805); 21 – Hypocaccus (Baeckmanniolus) dimidiatus dimidiatus (Illiger, 1807); 22 – Hypocacculus (Hypocacculus) metallescens (Erichson, 1834); 23 – Hypocacculus (Colpellus) praecox (Erichson, 1834); 24 – Hypocacculus (Nessus) rubripes (Erichson, 1834); 25 – Paravolvulus lateristrius (Solskij, 1876); 26 – Pholioxenus phoenix (Reichardt, 1930); 27 – Reichardtiolus duriculus (Reitter, 1904); 28 – Xenonychus tridens (Jacquelin-Duval, 1852).

Fig. 4. Saprininae, antenna, dorsal view, schematic.

Figs. 168–173. Saprininae, male terminalia, schematic: 168 – 8th sternite, ventral view; 169 – 8th sternite and tergite, dorsal view; 170 – ditto, lateral view; 171 – ninth tergites and tenth tergite, dorsal view; 172 – spiculum gastrale (10th sternite), ventral view; 173 – aedeagus, dorsal view.

Figs. 144–145. Left maxilla, ventral view. 144 – Eremosaprinus vlasovi (Reichardt, 1941); 145 – Xenophilotis choumovitchi (Thérond, 1965).

Fig. 146. Saprininae, pronotum and elytra, oblique lateral view.