Reproduction, egg morphology and development observed in Monographis queenslandicus (Diplopoda: Polyxenidae)

  title={Reproduction, egg morphology and development observed in Monographis queenslandicus (Diplopoda: Polyxenidae)},
  author={Cuong Van Huynh and Anneke A. Veenstra},
This study provides new insight into penicillate sexual behaviour and egg development as observed in Monographis queenslandicus Huynh et Veenstra, 2013 (Polyxenidae). [] Key Result The developing eggs were found to have two distinct stages, namely the chorion and pupoid, which both proved to be of 12-14 days duration. Both stages were characterized by distinctive external morphology. Morphological features observed pre ecdysis included the development of a smooth, tough membrane of the chorion.
Morphology and mating behaviour in the millipede Megaphyllum unilineatum (C.L. Koch, 1838) (Myriapoda, Diplopoda, Julida) under laboratory conditions
Investigating mating behaviour in laboratory conditions and identifying traits that could possibly be the target of pre-copulatory selection in the julid species Megaphyllum unilineatum found differences in certain behavioural sequences are similar to those previously reported in M. bosniense, while such similarity is not detected with respect to morphological variation in the mentioned species.
Reproduction, egg morphology and development observed in two Australian penicillate millipedes, Lophoturus queenslandicus (Lophoproctidae) and Phryssonotus novaehollandiae (Synxenidae) (Diplopoda)
The results indicate that the reproductive strategies of Australian lophoproctid and synxenid species are adapted to their harsh environment.


Postembryonic development of the ovary in the penicillate diplopod, Eudigraphis nigricans (Miyosi) (Diplopoda, Penicillata)
During the period from the third through the seventh (the last) larval instar, some cell clusters containing several previtellogenic oocytes and interstitial cells successively separate forward and backward from the germarium to form a series of paired patch‐shaped vitellarial areas on the extending ventral ovarian epithelium.
Taxonomy and biology of a new species of Pincushion Millipede of the genus Monographis (Diplopoda: Polyxenidae) from Australia.
The genus Monographis may be divided into two groups based on the arrangement of sensilla on the 6th antennal article: species with a crescent-shape arrangement and those with a triangular arrangement.
Soil biology guide
Find out more about the phylum of Insects and its uses in soil and environment.
Anamorphosis in millipedes (Diplopoda)—the present state of knowledge with some developmental and phylogenetic considerations
The contrasting principles of elongation and contraction, subject of much debate among diplopodologists, are shown both to have played a role in the course of millipede evolution.
Phylogenetic implications of structure of adult ovary and oogenesis in the penicillate diplopod, Eudigraphis nigricians (miyosi) (diplopoda: Myriapoda)
The ovary is a long, saclike organ lying between the alimentary canal and the ventral nerve cord from the fourth through the ninth body segment, and the ovarian wall consists of a thin ovarian epithelium and a sparse muscle covering.
Egg envelopes in diplopods, a comparative ultrastructural study.
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