Structure of sensilla on maxillary and labial palps in caddisflies of the genus Rhyacophila Pictet, 1834 (Trichoptera: Rhyacophilidae)

Q2 Agricultural and Biological Sciences

Invertebrate Zoology Pub Date : 2023-06-01 DOI:10.15298/invertzool.20.2.08

Diiak K.T. Abu, V. Ivanov, S. Melnitsky, M. Valuyskiy

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引用次数: 3

Abstract

: A comparative study of the structure and localization of sensilla on the palps of caddisflies from the genus Rhyacophila , the family Rhyacophilidae, was carried out for the first time. The structure of maxillary and labial palps in 15 species of the genus Rhyacophila was studied by scanning electron microscopy. Seven types and two subtypes of sensilla were found on these head appendages: pointed long trichoid sensilla, blunt chaetoid (gustatory) sensilla (two subtypes), campaniform sensilla, thick basiconic sensilla, petaloid sensilla, leaf-like pseudoplacoid and mushroom-like pseudoplacoid sensilla. The size of chaetoid and pointed trichoid sensilla on palp segments decreases towards the palp apex. Pseudoplacoid sensilla, as a rule, are found only on the terminal segments of the labial and maxillary palps, and in some species they completely disappear. Terminal segments of both pairs of palps have sensory fields formed by aggregations of petaloid sensilla. Apical sensory complexes are localized at the apical end of the maxillary and labial palps. At the top of these sensory areas there is a thick basiconic sensilla, on the lateral surface of the sensory complex there are rudimentary basiconic sensilla. The structure and localization of palpal sensilla, apical sensory complexes, and sensory zones with petaloid sensilla can be used for taxonomy purposes

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本文首次对湿蝇科湿蝇属湿蝇手掌上的感受器的结构和定位进行了比较研究。用扫描电镜研究了15种蛇属植物上颌和唇瓣的结构。在这些头部附属物上发现了7种类型和2个亚型:尖长毛状感受器、钝毛状(味觉)感受器(2个亚型)、钟形感受器、厚基状感受器、花瓣状感受器、叶状假placoid和蘑菇状假placoid感受器。触手节上的毛状和尖毛状感受器向触手端减小。一般来说，假placoid感受器只存在于唇和上颌触须的末端，在某些物种中它们完全消失。两对触须的末端都有花瓣状感受器聚集形成的感觉场。尖感觉复合体位于上颌和唇瓣的尖端。在这些感觉区域的顶部有一个厚的基基感受器，在感觉复合体的侧面有初级的基基感受器。掌状感受器、顶端感觉复合体和花瓣状感受器感觉带的结构和定位可用于分类目的

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来源期刊

Invertebrate Zoology Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

2.40

自引率

0.00%

发文量

期刊介绍： Scientific peer-reviewed journal INVERTEBRATE ZOOLOGY publishes original papers, reviews and brief communications on morphology, anatomy, embryology, taxonomy, phylogeny, and ecology of any group of invertebrates from protistans to lower chordates. INVERTEBRATE ZOOLOGY accepts manuscripts in English or Russian and publishes them in printed and electronic versions. The Russian translations of English titles, abstracts and figure captions of the papers written by non-Russian authors can be provided by the editors. Invertebrate Zoology invites authors to publish extended monographic manuscripts after usual reviewing procedure. The monographic manuscripts can include up to 400 thousand letters and be prepared in English or in Russian. Accepted monographic manuscripts will have priority to be published in the nearest issue of the journal.