Euspilotus (Neosaprinus) perrisi
Creators: name: Lackner, Tomáš
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Histeridae
Euspilotus
Euspilotus perrisi

description: 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).
description: Published as part of Lackner, Tomáš, 2010, Review of the Palaearctic genera of Saprininae (Coleoptera: Histeridae), pp. 1-254 in Acta Entomologica Musei Nationalis Pragae (suppl.) (suppl.) 50 on pages 106-111, DOI: 10.5281/zenodo.4272127