4,789 research outputs found
Orchesia (Orchestera) turkini Alekseev & Bukejs 2012
No full textOrchesia (Orchestera) turkini Alekseev & Bukejs, 2012 Material examined. One specimen with the collection number 1799 - 4 [CCHH], Baltic amber, Yantarny, Kaliningrad Region, Russia. Body length of the beetle is 3.6 mm. Syninclusions are absent.Published as part of Alekseev, Vitalii I. & Bukejs, Andris, 2015, A new species of the genus Orchesia Latreille (Coleoptera: Melandryidae) from Baltic amber with a key to species described from fossil resins, pp. 590-596 in Zootaxa 3947 (4) on page 593, DOI: 10.11646/zootaxa.3947.4.10, http://zenodo.org/record/23288
FIGURES 1–3 in New records and species of Crepidodera Chevrolat (Coleoptera: Chrysomelidae) in Eocene European amber, with a brief review of described fossil beetles from Bitterfeld amber
No full textFIGURES 1–3. Crepidodera tertiotertiaria sp. nov., holotype: 1—habitus, dorsal view; 2—habitus, ventral view; 3—head, frontal view.Published as part of Bukejs, Andris, Biondi, Maurizio & Alekseev, Vitalii I., 2016, New records and species of Crepidodera Chevrolat (Coleoptera: Chrysomelidae) in Eocene European amber, with a brief review of described fossil beetles from Bitterfeld amber, pp. 390-400 in Zootaxa 4193 (2) on page 392, DOI: 10.11646/zootaxa.4193.2.13, http://zenodo.org/record/16699
FIGURES 3–5 in Sucinolivolia torpida — a new genus and species of flea-beetles (Coleoptera: Chrysomelidae: Galerucinae) from Baltic amber
No full textFIGURES 3–5. Sucinolivolia torpida gen. nov. et sp. nov., holotype: 3—head, ventral view; 4—mesotarsus with appendiculate claws, 5—abdomen with exposed apex of aedeagus, and hind leg.Published as part of Bukejs, Andris, Biondi, Maurizio & Alekseev, Vitalii I., 2015, Sucinolivolia torpida — a new genus and species of flea-beetles (Coleoptera: Chrysomelidae: Galerucinae) from Baltic amber, pp. 119-126 in Zootaxa 4058 (1) on page 122, DOI: 10.11646/zootaxa.4058.1.7, http://zenodo.org/record/23967
Picemelinus irinae Alekseev & Grzymala, 2015, sp. nov.
No full textPicemelinus irinae sp. nov. Alekseev & Grzymala (Figs. 8–9) Material examined. Holotype No. 890 - 5 [CCHH], male (Figs. 8–9). The beetle inclusion is preserved in a polished piece of transparent amber with a yellowish shade without any further fixation. The piece is small, irregular in form, with maximum length 12 mm and maximum width 8 mm. The syninclusions are represented by two trichomes. Etymology. Matronymic, this new species is dedicated to the mother of the first author—Irina I. Alekseeva. Type strata. Baltic Amber. Eocene. Type locality. Russia, the Kaliningrad region, the Sambian [Samland] peninsula, Yantarny settlement [formerly Palmnicken]. Description. Length 1.8 mm; moderately convex, elongate. Unicolored, black. Upper surface biseriate, clothed with very short pubescence, one seta arising anterad of each puncture, with additional short, numerous setae between primary pubescence (pruinose pubescence). Body length 1.9 × maximum body width. Elytral length 3.6 × pronotal length. Head. Eyes large, oval, hemispherical, with slight anterior emargination, well-separated from hind margin of head; interocular space narrower than one ocular diameter; temples approximately 1 / 3 of minimum ocular diameter; apical maxillary palpomere elongate triangular; vertex covered by pubescence equal in length and width to elytral pubescence. Antenna (Fig. 8 B) filiform, 11 -segmented, pubescent, reaching middle of elytra when folded backward; scape, antennomere III, and antennomere XI longest; antennomere length ratios: 14 - 4-20 - 5 - 5-6 - 6 - 6 - 6 - 6- 11; antennomere III with two apical projections forming cavity for antennomere IV. Thorax. Pronotum (Fig. 8 A) transverse, width 0.7 × length, widest apically, with very shallow impression laterad of basal angle, disc with pubescence indistinct, punctation dense and coarse. Scutellum subquadrate, without visible punctation or pubescence. Elytron with short, simple pubescence, moderately convex, with slight depression on disc in basal third near suture; sides weakly rounded; width 0.7 × length; punctation dense and coarse; punctures finer towards lateral aspects of disc. Abdomen. Separation of abdominal ventrite I and abdominal ventrite II visible medially and laterally. Legs. Metafemur simple, without visible brush or comb of modified setae. Metatarsomere I length 3.0× metatarsomeres II–IV combined, metatarsomere II bilobed, metatarsomere III concealed. Diagnosis. Picemelinus irinae sp. nov. differs from the only extant described member of this genus from Japan, Picemelinus flabellicornis (Pic, 1910), by the simple instead of flabellate antennomeres V–X. The elongate scape and the very distinctive length and shape of antennomere III provide evidence for the congeneric status of these two species.Published as part of Alekseev, Vitalii I. & Grzymala, Traci L., 2015, New Aderidae (Coleoptera: Tenebrionoidea) from Baltic and Bitterfeld amber, pp. 239-257 in Zootaxa 3956 (2) on pages 244-245, DOI: 10.11646/zootaxa.3956.2.5, http://zenodo.org/record/23222
Zopheromimus Alekseev & Nabozhenko 2023, gen. nov.
No full textGenus Zopheromimus gen. nov. Type species: Zopheromimus auriborussiensis sp. nov. Derivatio nominis. The name of the new genus is a compound word and combines “ Zopherus ” (name of the type genus in the subfamily) and Greek “μῖμος”, “mimos” or in latinized form “mimus”, meaning “mimic”. The gender is masculine. Remarks. The new genus is monotypic; therefore, the generic description overlaps considerably with that of the species.Published as part of Alekseev, Vitalii I. & Nabozhenko, Maxim V., 2023, News from Baltic amber: a new tribe of extinct Paleogene ironclad beetles (Coleoptera: Zopheridae: Zopherinae), pp. 435-445 in Zootaxa 5297 (3) on page 438, DOI: 10.11646/zootaxa.5297.3.8, http://zenodo.org/record/800522
Diodesma slipinskii Alekseev & Bukejs, sp. nov.
No full textD. slipinskii Alekseev & Bukejs sp. nov. (Figs 7–9, 24) Type material. Holotype: Nr. 731-1 [CCHH] “Holotype / Diodesma slipinskii sp. nov. / des. Alekseev V.I. & Bukejs A.” [red hand-written label]; sex unknown. Complete beetle is included in a small, transparent, yellow amber piece embedded in block of GTS-polyester resin with dimensions 18 × 6 × 6 mm. Syninclusions are seven stellate Fagacean hairs and one mite (length 0.35 mm). Amber piece with inclusion possibly thermally treated in autoclave. Type strata. Baltic amber, Upper Eocene, Prussian Formation (Priabonian). Estimated age: 37.2–33.9 Ma. Type locality. Yantarny settlement (formerly Palmnicken), Sambian (Samland) Peninsula, Kaliningrad region, Russia. Differential diagnosis. Diodesma slipinskii sp. nov. differs from extant species of the genus in the following combination of characters: pronotum with protruding anterior angles; lateral sides of pronotum weakly explanate and flattened anteriad; elytra with small punctures; antennomere 10 subquadrate. Description. Body length about 2.25 mm, maximum height and width (at middle of elytra) 0.68 and 0.95 mm respectively; body elongate, strongly convex dorsally, flattened ventrally; body and appendages apparently uniformly black in colour. Head. 1.5× as wide as long; distinctly widest between antennae; vertex covered with dense, small, round, unisetose granules; frons and clypeus sparsely punctured and setose. Anterior clypeal margin widely rounded. Eyes large, prominent, conical, with coarse facets; interfacetal setae not apparent; distance between eye and antennal insertion slightly shorter than scape length. Maxillary palpus 4-segmented, short; palpomere 4 broad, oval-shaped. Labial palpus 3-segmented, palpomere 3 largest, ovate. Antennae short, extending to middle of pronotum; 11- segmented with 2-segmented club, densely covered with dark, straight semierect setae. Scape, pedicel and antennomere 3 elongate; antennomeres 4–9 transverse; antennomere 10 subquadrate; antennomere 11 rounded. Antennomere length ratios: 6-5-5-4-4-3-3-3-3-5-3. Thorax. Pronotum transverse, 1.2× as wide as long, widest at middle; pronotal disc convex, densely covered with unisetose granules (distinctly larger than granules on head). Lateral sides weakly explanate and flattened anteriad. Anterior margin arcuate; lateral and posterior margins rounded; anterior angles triangular, acute, prominent, reaching middle of eye; posterior angles obtuse. Pro-, meso- and metasternum weakly rugose. Procoxal cavities open posteriorly, meso- and metacoxal cavities closed. All coxae separated: procoxae by elongate (3:1 length to width ratio), parallel-sided prosternal process; mesocoxae by distance approximately 0.3 of coxal diameter; metacoxae by intercoxal process of ventrite 1 (slightly narrower than metacoxal diameter). Scutellum small, indistinct. Elytra ovate, length 1.5 mm, width 0.95 mm; strongly convex dorsally, slightly wider than pronotum at humeri, jointly rounded apically; weakly rugose at disc and crenulated laterally in basal one-fourth of length. Humeral angles rounded. Each elytron with 10 rows of small, round punctures, distance between strial punctures equal to 1.5–2.0× diameter of one puncture; intervals flat, distance between striae approximately 3–4× diameter of single puncture. Strial punctures bearing long, curved setae. Scutellary striole not apparent. Epipleura well-developed, reaching apex of elytra, widest at humeral angle. Hind wings not apparent. Ratio of lengths of mesoventrite to metaventrite to abdomen: 3-3-14. Abdomen. With five visible, similarly articulated ventrites. Ventrite length ratios: 22-14-11-9-10. Setation of ventrites not apparent (possibly absent); ventrite 5 rounded apically. Intercoxal process of abdominal ventrite 1 rounded. Legs. Tarsi tetramerous. Length of apical tarsomere equal to combined length of tarsomeres 1–3; tarsomere 3 smallest. Tarsal claws simple, large, equal in size, with length about one-third of tarsomere 4. Etymology. Patronymic, this new species is named in honor of a renowned coleopterist and specialist on zopherid beetles, Dr. Adam Ślipiński (CSIRO, Canberra, Australia)Published as part of Alekseev, Vitalii I. & Bukejs, Andris, 2016, New Zopheridae (Coleoptera: Tenebrionoidea) from Baltic amber, pp. 409-427 in Zootaxa 4178 (3) on pages 414-415, DOI: 10.11646/zootaxa.4178.3.6, http://zenodo.org/record/25478
Orchesia turkini Alekseev & Bukejs 2012
No full text<i>Orchesia turkini</i> Alekseev & Bukejs, 2012 <p> <b>Material examined.</b> One specimen with collection number MMO 1/43 7657/133 [MWO]; Baltic amber, adult, sex unknown, complete specimen partially obscured by milky opacity (left and ventral sides). Body length of the specimen is 3.5 mm. The beetle inclusion is preserved in a small-sized, yellow-orange, flat, polished piece of transparent amber with dimensions of 16×11× 2.5 mm without supplementary fixation. Syninclusions are absent.</p> <p>One specimen with collection number MMO 1/22 4730/258 [MWO]; Baltic amber, adult, sex unknown, complete specimen. Body length of the specimen is 3.6 mm. The beetle inclusion is preserved in a small-sized, orange, flat, polished piece of transparent amber with dimensions of 16×12× 2 mm without supplementary fixation. Syninclusions are absent.</p> <p>One specimen with collection number 7862 [CAG]; Baltic amber, adult, sex unknown, complete specimen. Syninclusions are represented by few stellate fagacean trichomes and numerous detrital particles.</p>Published as part of <i>Alekseev, Vitalii Igorevich & Bukejs, Andris, 2021, Fossil Melandryidae (Coleoptera: Tenebrionoidea) from Eocene Baltic amber of the Sambian peninsula: new genus, six new species, new records and key to described taxa, pp. 142-166 in Zootaxa 4965 (1)</i> on page 162, DOI: 10.11646/zootaxa.4965.1.7, <a href="http://zenodo.org/record/4723237">http://zenodo.org/record/4723237</a>
Vanonus aestiorum Alekseev & Grzymala, 2015, sp. nov.
No full textVanonus aestiorum sp. nov. Alekseev & Grzymala (Figs. 11, 14– 16) Material examined. Holotype No. AWI-037 [CVIA], possible male (Fig. 14–16). The beetle inclusion is preserved in a polished piece of transparent amber with a yellowish shade without any further fixation. The amber piece is parallelepiped, with maximum length 20 mm and maximum width 11 mm. The plant syninclusions are represented by ten trichomes. Etymology. The species name is derived from the Old Latin names of the West Baltic tribes (Aestorum nationem, Aestiorum gentes, Hesti(s), Aesti/Aisti, Êstum). Type strata. Baltic Amber. Eocene. Type locality. Russia, the Kaliningrad region, the Sambian [Samland] peninsula, Yantarny settlement [formerly Palmnicken]. Description. Length 2.3 mm; moderately convex, elongate; uniformly dark gray. Upper surface biseriate, clothed in short pubescence, one seta arising anterad of each puncture, with additional numerous setae between primary pubescence (pruinose pubescence). Body length 2.9 × maximum body width. Elytral length 1.4 × pronotal length. Head. Eyes large, oval, hemispherical, with distinct anterior emargination; well-separated from hind margin of head; interocular space about as wide as ocular diameter; temples approximately 1 / 5 of ocular diameter; apical maxillary palpomere broad, triangular, slightly rounded; apical labial palpomere wide, possibly subquadrate. Antenna filiform, robust (Fig. 11 B); 11 -segmented, pubescent; reaching basal third of elytra when folded backward; scape, antennomeres III and antennomere XI longest; antennomere length ratios: 10 - 4-8 - 5 - 5 - 5 - 5 - 5 - 5 - 5- 10. Thorax. Pronotum (Fig. 11 A) transverse, broadest anterad of middle; finely, densely punctate; with very fine and short simple pubescence, with three faint basal pronotal impressions. Scutellum trapeziform, widest at base. Elytron pubescent, with primary and interstitial setae, moderately convex, slightly depressed on disc in basal third; sides weakly rounded; width 0.55 × length; punctation irregular, moderately dense. Abdomen. Separation of abdominal ventrite I and abdominal ventrite II visible laterally, obsolete medially. Legs. Metafemur slightly curved, with posterior brush of setae running length of metafemur, approximately 1 / 3 × width of metafemur (Fig. 16). Metatarsomere I approximately 2 × metatarsomeres II-IV combined; metatarsomere II bilobed; metatarsomere III small and concealed. Diagnosis. Vanonus aestiorum sp. nov. is similar in general appearance to V. ulmerigicus, and differs from it by the dense punctation of the pronotum, the scarce and almost invisible short pronotal pubescence, the form of the pronotal impressions (divided in three parts and more shallow), and the ratios of the antennomeres.Published as part of Alekseev, Vitalii I. & Grzymala, Traci L., 2015, New Aderidae (Coleoptera: Tenebrionoidea) from Baltic and Bitterfeld amber, pp. 239-257 in Zootaxa 3956 (2) on pages 246-247, DOI: 10.11646/zootaxa.3956.2.5, http://zenodo.org/record/23222
Microscapha andrzeji Bukejs et Alekseev 2015
No full text<i>Microscapha andrzeji</i> Bukejs et Alekseev, 2015 <p> <b>Material examined.</b> One specimen with collection number MMO 1 7657/1265 [MWO]; Baltic amber, adult, female, complete specimen. The beetle inclusion is preserved in a small, yellow, polished piece of transparent amber with dimensions of 12×10× 4.5 mm without supplementary fixation. Syninclusions are represented by one Acari specimen.</p> <p> <b>Note.</b> The specimen is unicolorous rufous, with body length 1.71 mm, body width 0.79 mm (body length/width ratio 2.18), with sutural stria reaching scutellar shield and scutellar sides straight. The characters correspond to the described <i>M. andrzeji</i> with the exception of the body coloration. The holotype of <i>M. andrzeji</i> is dark brown, with maxillary palpomere 4 and antennomeres 9–10 rufous only, while the specimen under study is unicolorous rufous (like the holotype of <i>M. kugelanni</i> <b>sp. nov.</b>). The color difference between the studied amber specimens is considered insignificant for species attribution in this case and possibly caused by the fossilization of amber and alteration of inclusions after burial.</p>Published as part of <i>Alekseev, Vitalii Igorevich & Bukejs, Andris, 2021, Fossil Melandryidae (Coleoptera: Tenebrionoidea) from Eocene Baltic amber of the Sambian peninsula: new genus, six new species, new records and key to described taxa, pp. 142-166 in Zootaxa 4965 (1)</i> on page 162, DOI: 10.11646/zootaxa.4965.1.7, <a href="http://zenodo.org/record/4723237">http://zenodo.org/record/4723237</a>
Palaeocnopus Alekseev & Grzymala, 2015, gen. nov.
No full textGenus Palaeocnopus gen. nov. Alekseev & Grzymala Type species: Palaeocnopus densipunctatus sp. nov. Alekseev & Grzymala, here designated Diagnosis. The combination of small overall body size (1.4–1.8 mm), the deep basal pronotal impressions, the elytra with uniseriate pubescence, the coarsely faceted and protuberant eyes, and the metathoracic femora without any excavation or modified setal comb or brush differs from all currently described extant and extinct genera of Aderidae. This new genus most closely resembles Cnopus Champion, 1893, but can be distinguished by the two deep, lateral triangular impressions at the anterior pronotal angles and the metathoracic legs with metatarsomere I equal to or slightly longer than the following metatarsomeres combined. Description. Body small and elongate (1.4–1.8 mm), upper surface clothed with uniseriate pubescence, with one seta arising anterad of each puncture, without additional setae between; antenna long, filiform, 11 -segmented; eyes large, oval, hemispherical, coarsely faceted, adjacent to hind margin of head; pronotum transverse, maximal width at or close behind middle, with two deep, lateral triangular impressions at anterior angles and 1–2 shallow to deep basal or sub-basal impressions, form of which is species-specific; separation of abdominal ventrite I and abdominal ventrite II visible laterally, obsolete medially; metafemur simple, lacking distinctive comb or brush of modified setae, metatarsomere II bilobed and metatarsomere III small. Etymology. The new genus-group name Palaeocnopus is composed of “ palaeo ” (meaning old, ancient) and “ Cnopus ”, the name of its putative sister genus. The name is masculine. Species composition. Four newly described extinct species. Remarks. Several observed characters, such as the antennomere ratios and the size of the eyes and area between them, are assumed to be sexually dimorphic because all other characters appear to be constant between specimens. These differences have been observed between males and females of extant aderid taxa, such as those in the genus Euglenes Westwood, wherein males have elongate antennomeres and enlarged eyes as compared to females. These characters can later be confirmed by finding a pair of Palaeocnopus “ in copula ” within an amber inclusion. Systematic placement. The genus Palaeocnopus shares several putative morphological synapomorphies with the potentially closely related genus Cnopus Champion, 1893 such as the globular pedicel, the coarsely faceted eyes lacking anterior emargination, the deep basal pronotal impressions, the uniseriate elytral pubescence, and the absence of any metathoracic femoral modifications. Preliminary phylogenetic analyses of the Aderidae place this genus within a clade containing the genera Cnopus, Scraptogetus Broun, 1893, and the currently unplaced North American species ‘ Xylophilus ’ constrictus Fall, 1901, based upon the globular pedicel, the coarsely faceted eyes lacking anterior emarginations, the shallow to deep pronotal impressions, and uniseriate elytral pubescence. The higher-level classification of the Aderidae is currently under revision (TLG in preparation) and we refrain from discussing the phylogenetic placement of this new genus further in order to avoid future classification confusion.Published as part of Alekseev, Vitalii I. & Grzymala, Traci L., 2015, New Aderidae (Coleoptera: Tenebrionoidea) from Baltic and Bitterfeld amber, pp. 239-257 in Zootaxa 3956 (2) on page 249, DOI: 10.11646/zootaxa.3956.2.5, http://zenodo.org/record/23222
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