Der Apfelblattsauger (Psylla mali Schm.)

Speyer, W.

doi:10.1007/978-3-642-90948-1_2

Der Apfelblattsauger 1929

DOI: 10.1007/978-3-642-90948-1_2

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Der Apfelblattsauger (Psylla mali Schm.)

W. Speyer

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2019

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“…The male internal reproductive organ complex of approximately 175 species from all eight extant families of the Hemipteran superfamily Psylloidea (Cicero et al unpublished; Mathur 1975, Glowacka 1987, Brown and Hodkinson 1988) is known to possess an endocuticular structure that classical authors called the ‘sperm pump’ (Speyer 1929 for Cacopsylla (= Psylla ) mali (Schmidberger) (Hemiptera: Psyllidae)), ‘ejaculatory pump’ (Saunders 1921 for C. mali ), or ‘piston-shaped organ’ (Witlaczil 1885 for Baeopelma (= Psylla ) foersteri (Flor) (Hemiptera: Psyllidae)). Synonymies are taken from Ouvrard (2019).…”

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confidence: 99%

New Anatomical Evidence from the Male Asian Citrus Psyllid (Hemiptera: Liviidae) Invokes Controversy Over the Accepted Function of Some Male Reproductive Organs in Psylloidea

Cicero

Stansly

2019

Journal of Insect Science

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Males of many Psylloidea are known to possess a characteristic structure at the functional hub of their reproductive apparatus, between afferent and efferent passage of seminal fluid. The structure is a squat, cylindrical endoskeleton consisting of two sections. Classical authors named them as ‘sperm pump’ and ‘ejaculatory duct’, based on superficial resemblance to a spring-loaded, thimble-shaped cylinder, encircled by smooth, vertical columns interpreted to be muscles which, when contracted, compress the cylinder and affect seminal fluid discharge. The discovery of numerous spherules of unknown composition and function in and around the columns of the Asian citrus psyllid male genitalia invoked rigorous scrutiny of the classical literature for evidence to support its claims, and determined that the grounds for vetting the structure as a sperm pump were fully teleological. This paper raises several objections to modern acceptance of this classical interpretation, presenting them as problematic, thought-provoking, and sometimes controversial anatomical features. The two sections are herein called ‘drum’ and ‘spout’. As an endoskeleton, the sections are an invagination of the exoskeleton and therefore cannot receive seminal fluid into their hollow. A phallus is identified inside an aedeagal tube, indicating that it is the ejaculatory duct—the tube, drum, and spout are considered its housing. A sheath envelopes the drum and is directly continuous with the spout hypodermis, another problematical feature raising the question of whether it is detached from adherence to the drum cuticles. Also, there are four afferent tubes but only two openings in the drum to receive their seminal fluids.

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confidence: 99%

New Anatomical Evidence from the Male Asian Citrus Psyllid (Hemiptera: Liviidae) Invokes Controversy Over the Accepted Function of Some Male Reproductive Organs in Psylloidea

Cicero

Stansly

2019

Journal of Insect Science

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Der Apfelblattsauger (Psylla mali Schm.)

Cited by 1 publication

References 0 publications

New Anatomical Evidence from the Male Asian Citrus Psyllid (Hemiptera: Liviidae) Invokes Controversy Over the Accepted Function of Some Male Reproductive Organs in Psylloidea

New Anatomical Evidence from the Male Asian Citrus Psyllid (Hemiptera: Liviidae) Invokes Controversy Over the Accepted Function of Some Male Reproductive Organs in Psylloidea

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