Functional Morphology and Ultrastructure of the Peripheral Antennal Sensillar System of (Müller, 1766) (Insecta: Hemiptera: Pentatomidae).

The antennae of the shield bug (Müller, 1766) were examined through scanning and transmission electron microscopy to reveal their general morphology, as well as the antennal sensilla's distribution, size, and ultrastructure of their dendrites and function. The antennae comprise five antennomeres (one scape, two pedicels, and two flagellomeres). Different lengths of chaetic mechanosensilla (Ch1-Ch4) exist on all antennomeres, and several highly sensitive campaniform sensilla are embedded in the exoskeleton and measure cuticular strain.

The first description of an apterous aphid morph of the family Canadaphididae (Hemiptera, Sternorrhyncha, Aphidomorpha).

The first apterous morph of the Canadaphididae family is described based on Canadian amber inclusions. On the basis of morphological features, it was assigned to the species Canadaphis carpenteri. For the first time, a fluorescence microscope was used to examine a representative of the Canadaphididae family, revealing previously unknown details.

The earliest pollen-loaded insects from the Lower Permian of Russia.

Recent fossil discoveries suggest that the coevolution of insect pollinators and gymnosperms started long before the appearance of flowering plants. One of the keys to understanding the origins of pollination relationships is fossil insects with gymnosperm pollen attached to the body surface. Such fossils are exceedingly rare to find, especially from the Palaeozoic, a time when ambers with insect inclusions were absent.

Canadaphis mordvilkoi, Kononova 1976 (Hemiptera: Sternorrhyncha: Canadaphididae)redescription and neotype designation.

Here we present a redescription of an aphis species Canadaphis mordvilkoi Kononova, 1976 based on a recently found specimen originating from the same locality as holotype (Yantardakh (Kheta Formation), Taimyr Peninsula, Russia). The new specimen is far better preserved and many characters invisible and not mentioned in original description are available for our analysis. As a result, we were capable to indicate affinities with other species belonging to the Canadaphididae family.

Possible long-proboscid insect pollinators from the Early Permian of Russia.

Insect pollination is one of the hallmarks of flowering plants. Bees, moths, flies, and some other pollinators evolved elongate siphonate mouthparts for sucking concealed nectar and occasionally other liquids. However, it is clear from the fossil record that insects with similar adaptations appeared long before the mid-Cretaceous radiation of angiosperms.

Morphological and histological study of the forewing of (Linnaeus, 1758) (Hemiptera, Sternorrhyncha).

Wings of males were studied. Both ventral and dorsal surfaces of wings were examined under light and scanning electron microscopes. The structure regarded as vein cubitus anterior turned out to be a reinforcement element only.

Is there a relationship between the morphology of the forewing axillary sclerites and the way the wing folds in aphids (Aphidomorpha, Sternorrhyncha, Hemiptera)?

The present study describes the relationship between the morphology of the forewing axillary sclerites and the way the wings fold among 24 aphid genera as compared to a representative of coccids. Architecture of the forewing base was imaged with scanning electron and optical (fluorescence) microscopy. Significant differences in morphology of axillary sclerites between aphid species were observed, despite their belonging to one infraorder.

New genus and species of the extinct aphid family Szelegiewicziidae and their implications for aphid evolution.

Recently, we are witnessing an increased appreciation for the importance of the fossil record in phylogenetics and testing various evolutionary hypotheses. However, this approach brings many challenges, especially for such a complex group as aphids and requires a thorough morphological analysis of the extinct groups. The extinct aphid family Szelegiewicziidae is supposed to be one of the oviparous lineages in aphid evolution.

The forewing of the (Scopoli 1763) (Hemiptera, Sternorrhyncha): a morphological and histological study.

Dorsal and ventral sides of the forewing of (Scopoli 1763) (Sternorrhyncha, Hemiptera) were examined by scanning electron microscopy. Reinforcement elements on their surface as well as scale-like elements were described. Using histological methods, cross-sections of the material were done.

Polyphyly of the extinct family Oviparosiphidae and its implications for inferring aphid evolution (Hemiptera, Sternorrhyncha).

Aphidoidea, the so-called "true aphids" are one of the most challenging groups in terms of solving the phylogenetic relationships. Morphology-based analyses were strongly affected by widespread homoplasy, while the molecular-based attempts struggled with the lack of sufficient phylogenetic signal. Despite significant improvements, the higher classification still remains unresolved and rather controversial.

Comparative morphology of the forewing base articulation in Sternorrhyncha compared with a representative of Fulgoromorpha (Insecta, Hemiptera).

The forewing articulation of single species from each of the four subgroups of Sternorrhyncha (Aleyrodomorpha, Aphidomorpha, Coccomorpha, Psyllomorpha) was examined by optical and scanning electron microscopy. The species were compared with a species of Cixiidae (Fulgoromorpha), as an outgroup of Sternorrhyncha. We present the results of a comparative analysis of the forewing articulation in these five groups, propose a standardized terminology and compare our findings with those previously reported.

The structure of extremely long mouthparts in the aphid genus Walker (Hemiptera: Sternorrhyncha: Aphididae).

Scanning electron microscopy and light microscopy were used to elucidate the morphology of labium and mandibular and maxillary stylets of the aphids (L.) and Cholodkovsky. The mechanism of labium shortening associated with feeding process was described as well.

New mayfly genera from the Middle Triassic of Poland and their evolutionary and paleogeographic implications (Ephemerida: Litophlebiidae, Vogesonymphidae).

Two new mayfly genera and species from the Triassic deposits of the Pałęgi area (southeast Poland) are described. This is the first description of aquatic insects from the Pałęgi locality. Triassolitophlebia palegica gen.

Revised concept of the fossil genus Oviparosiphum Shaposhnikov, 1979 with the description of a new genus (Hemiptera, Sternorrhyncha, Aphidomorpha).

This paper presents a revision of the aphid genus Oviparosiphum, which is known from the Cretaceous period. Redescriptions of two species: Oviparosiphumjakovlevi Shaposhnikov, 1979 and Oviparosiphumbaissense Shaposhnikov & Wegierek, 1989 are made, and an updated diagnosis of this genus is provided. Oviparosiphumbaissense is the type species of a newly described genus Archeoviparosiphum gen.

Chauliodites niedzwiedzkii sp. n. (Grylloblattida: Chaulioditidae) from Triassic sediments of Poland.

A new representative of the family Chaulioditidae (Insecta, Grylloblattida), Chauliodites niedzwiedzkii sp. n., is described from the Upper Olenekian-Lower Anisian sediments of Pałęgi in Holy Cross Mountains, Poland.

A new family of aphids (Hemiptera, Sternorrhyncha) from the Lower Cretaceous of Baissa, Transbaikalia.

The family Rasnitsynaphididaefam. n. has a unique combination of characters: 9-segmented antennae; rhinaria arranged in many transverse rows, surrounding the antennal segments; segment IX narrower than other segments of flagellum, always without rhinaria; cubitus branches separated; ovipositor present; siphuncular pores absent.