Review of the Palaearctic genera of Saprininae (Coleoptera: Histeridae) Author Lackner, Tomáš text Acta Entomologica Musei Nationalis Pragae 2010 suppl. 2010-10-20 50 1 254 journal article 9574 10.5281/zenodo.4272127 724cb358-6f18-4816-afc7-bb42cb9b6942 0374-1036 4272127 Ammostyphrus cerberus Reichardt, 1924 ( Figs. 14 , 48 , 82 , 110 , 198–214 ) Ammostyphrus cerberus Reichardt, 1924: 165 . Ammostyphrus cerberus : REICHARDT (1941) : 337 , Fig. 174 ; KRYZHANOVSKIJ & REICHARDT (1976) : 241 , Fig. 469 ; MAZUR (1984) : 103 ; MAZUR (1997) : 266 ; MAZUR (2004) : 90 . Type locality. Kazakhstan , Perovskiy uezd, Chirkeili. Type material examined. HOLOTYPE : spec., ‘Perovskij u. / Peschannaya Pustina / Chirkeili / 23.iv.[19]09 [printed] // Type / Ammostyphrus / cerberus m. / A. Reichardt det. [printed-written] // Holotypus [red label, printed]’ ( ZIN ). Additional material examined. UZBEKISTAN : 1 ♁, 1 spec. , Buchara , Kyzylkum , 27.iv.1978 , A. Olexa lgt .; 1 spec. , ditto, but 30.vi.1976 ; 2 spec. , Karakum , Chiva [= Khiva] / 1.–5.v.1979 , A. Olexa lgt .; 1 ♁, Buchara , Shafrikan , 29.iv.1979 , A. Olexa lgt. ( TLAN ) . Figs. 198–207. Ammostyphrus cerberus Reichardt, 1924 , SEM: 198 – habitus, dorsal view; 199 – ditto, ventral view; 200 – lateral disc of metaventrite, metepisternum and fused metepimeron; 201 – head, dorsal view; 202 – ditto, ventral view; 203 – prosternum; 204 – mentum and cardines and stipites of maxilla, ventral view; 205 – protibia, dorsal view; 206 – metatibia, ventral view; 207 – ditto, dorsal view. Figs. 208–214. Ammostyphrus cerberus Reichardt, 1924 , male terminalia: 208 – 8 th sternite and tergite, ventral view; 209 – ditto, dorsal view; 210 – ditto, lateral view; 211 – 9 th tergite, 10 th tergite (dorsal view) and spiculum gastrale (ventral view); 212 – 9 th tergite, 10 th tergite and spiculum gastrale, lateral view; 213 – aedeagus, dorsal view; 214 – ditto, lateral view. Redescription. Body length: PEL: 2.0– 2.25 mm ; APW: 0.625–0.75 mm ; PPW: 1.5–1.625 mm ; EL: 1.45–1.625 mm ; EW: 1.375 –1.875 mm . Body ( Figs. 198–199 ) ovoid, strongly convex, cuticle dark brown with a stark bronze metallic luster; legs, antennae and mouthparts reddish-brown. Antennal scape ( Fig. 201 ) slightly thickened, with several short setae; club rather large, oval, without visible articulation, with thick short sensilla becoming slightly sparser basally, basal fourth of surface glabrous; sensory structures of antennal club ( Fig. 14 ) in form of stipe-shaped vesicle situated under a large circular sensory area on internal distal margin of the ventral side of antennal club. Mouthparts. Mandibles ( Fig. 82 ) stout, outer margin straight, strongly curved inwardly; acutely pointed, sub-apical tooth on left mandible moderately large, obtuse; labrum ( Fig. 48 ) sparsely punctate; labral pits present, with two setae; anterior margin medially with prominent convexity interrupting concavity; terminal labial palpomere thickened, its width about half its length; mentum ( Fig. 204 ) sub-trapezoid, anterior margin ( Fig. 110 ) shallowly emarginate, disc of mentum setose; cardo of maxilla with several moderately long setae; stipes triangular, with three moderately long setae; terminal maxillary palpomere thickened, its width about half its length; about three times as long as penultimate. Clypeus ( Fig. 201 ) flat, rounded laterally, rectangular, almost smooth, only with scattered microscopic punctation; frontal stria ( Fig. 201 ) well impressed, carinate, somewhat curved outwardly, continued as well impressed and carinate supraorbital stria; frontal disc slightly convex; frontal disc almost smooth, with scattered fine punctures; eyes flattened, visible from above. Pronotal sides ( Fig. 198 ) strongly convergent forwardly; apical angles blunt; marginal pronotal stria complete, well impressed and carinate; lateral pronotal stria carinate, posteriorly and anteriorly shortened, somewhat distant from lateral pronotal margin, on both ends curved inwardly; pronotal disc convex, almost smooth, only antero-lateral angles inside of the lateral pronotal stria with inconspicuous scattered shallow punctures; base of pronotal disc with a row of round punctures; pronotal hypomeron with short amber setae; scutellum small, but visible. Elytral humeri gently prominent; epipleura almost smooth, only with scattered microscopic punctation; marginal epipleural stria complete; marginal elytral stria strongly impressed, carinate, continued as complete apical elytral stria. Humeral elytral stria distinctly impressed on basal third, occasionally doubled; inner subhumeral stria present medially, shortened; elytra with four dorsal striae 1–4, in fine punctures, increasing in length from first to fourth, fourth stria surpasses elytral half apically, basally connected with sutural elytral stria; sutural stria well impressed, apically connected with apical elytral stria. Elytral disc almost smooth, punctation confined to apical third, along sutural stria reaching about one-third of elytral length anteriorly, punctures separated by about their own to twice their diameter. Propygidium partially covered by elytra, with dense shallow punctures; pygidium convex, about as long as broad, with coarser and denser elongate punctures than those of propygidium, forming longitudinal rugae. Anterior margin of median portion of prosternum ( Fig. 203 ) rounded; pre-apical foveae absent; marginal prosternal stria absent anteriorly; prosternal process slightly compressed, setose, rounded dorsally; carinal prosternal striae absent (in some specimens vaguely present between procoxae, as in Chivaenius ); lateral prosternal striae well impressed, carinate, convergent anteriorly, vaguely united in front. Anterior margin of mesoventrite almost straight, somewhat curved outwardly; discal marginal mesoventral stria laterally well impressed, carinate, somewhat weakened medially; disc of mesoventrite convex, with dense deep punctures separated about their own to twice their diameter, posteriorly growing in size; meso-metaventral sutural stria formed by a row of large punctures; intercoxal disc of metaventrite flat, almost smooth, only with microscopic punctation, along posterior margin with three rows of deep punctures; lateral metaventral stria ( Fig. 200 ) well impressed, carinate, curved outwardly, almost attaining meso-metepisternal suture. Lateral disc of metaventrite ( Fig. 200 ) slightly concave, with scattered shallow punctures, fringed with short setae; metepisternum on apical two-thirds with sparse shallow punctures fringed with short setae, basal third + fused metepimeron almost glabrous, only with several shallow punctures. Intercoxal disc of first abdominal sternite almost completely striate laterally; anterior half of disc with coarse punctures separated by about their own diameter, posteriorly punctures replaced by very fine scattered microscopic punctation; along posterior margin row of larger punctures present; lateral disc of all visible abdominal sternites laterally setose. Protibia ( Fig. 205 ) on outer margin with two large triangular teeth topped with large triangular denticle, followed by one low tooth topped with minuscule denticle, followed by another microscopic denticle; protarsal groove shallow; tarsi shortened, but not rudimentary; anterior protibial stria shortened apically; protibial spur short, growing out from apical protibial margin; outer part of posterior surface of protibia smooth; median part of posterior surface with irregular setae; posterior protibial stria vaguely impressed; inner margin of protibia with dense row of setae. Mesotibia not particularly dilated, outer margin with two rows of stout short denticles growing in size in proximal direction; posterior surface with sparse brush of two – outer and median – rows of setae; posterior mesotibial stria reaching half length of mesotibia apically, next evanescent; anterior surface of mesotibia almost smooth, with microscopic wrinkles; anterior mesotibial stria shortened apically; apical margin of mesotibia anteriorly with numerous inner anterior denticles; mesotibial spur short, stout; claws of apical tarsomere longer than half its length. Metatibia ( Figs. 206–207 ) slightly dilated and thickened, outer margin with two rows of short denticles, one row situated above the other, second row somewhat shifted from outer margin, observable only from ventral view; posterior surface of metatibia with rows of setae similar to those of mesotibia; anterior surface and apical margin of metatibia ( Fig. 207 ) similar to that of mesotibia; claws of apical tarsomere gently bent, longer that half its length. Male genitalia. Eighth sternite ( Figs. 208–209 ) longitudinally separated medially, apically with inconspicuous velum and sparse short setae; eighth tergite and eighth sternite not fused laterally ( Fig. 210 ), spiculum gastrale ( Figs. 211–212 ) expanded on both ends. Basal piece of aedeagus ( Figs. 213–214 ) very short, ratio of its length: length of parameres approximately 1: 7; parameres ( Figs. 213–214 ) fused almost along basal three-fourths; apex with pseudopores; aedeagus strongly curved ventrad ( Fig. 214 ).