Newman E. 1833

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Newman E. 1833 - Entomological notes. - Entomological Magazine, n°1, (art. XLVII partim : 416) + (art. LXII partim : 511-514). - ONLINE

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Newman (1833) innove en matière de systématique puisqu'il utilise des Classes et des (Ordres naturels : inded.). On trouve par exemple les Coleoptera (Carabites)), Hemiptera (Cimicites) et en ce qui nous concerne dans ces pages les Neuroptera (Perlites, Libellulites...).

Cet article contient les nouveaux genres Sympetrum, Orthetrum et Platetrum, ainsi que sous Libellula praenubila, une nouvelle forme pour Libellula quadrimaculata.

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Extraction du texte partim

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BY EDWARD NEWMAN. 511

CLASS.—NEUROPTERA.

NATURAL ORDER.—LIBELLULITES, ined.

Genus Libellulam ut a Doct. Leach circumscriptum, audendo iterum
dividere in terram ambiguam periclictor : nihilominus mihi videtur,
character unicus "metallce sexibus ambobus compares" non suffi-
cit, propterea distinctiones novas in corporis figuram conditas,
attentavi : instrumenta cibaria haud examinavi, quoniam genus
satis determinatum instanter universus monstrat aspectus, san-
ciuntque characteres enumerati existimo.

GENUS.—SYMPETRUM.d Newman.

Caput metathorace latius : propodeon, podeonque in commissura
incrassata : segmenta sequentia lateralibus compressa : protelum ac
adjacentia plus minusve incrassata : tetum minutum : teli appen-
dices notas cæteris distinctas vix præbent : alarum stigma utrin-
que convexum.

The remaining species of Dr. Leach's genus, Libellula,
widely differ from each other in the form of the posterior
segments, and in the length of the superior caudal appendages
of the male ; but in none of them are these segments com-
pressed as in the genus Sympetrum ; they will, in all proba-
bility, resolve eventually into three distinct genera, and as
such I had once prepared them for publication, together with
Sympetrum, as below,e but a dislike to name-giving induced
me to relinquish them.

A. Sexus colore discrepantes.

Symp. Scoticum. Mas, purpureo-nigrum, maculis flavis ;
alis hyalinis : pedibus nigris. Fem. olivaceum, maculis
flavis : subtus nigrum ; alis hyalinis basi flavis. Mas et
Fem. stigmate nigro, pedibus nigris.

d Συμπιεζω comprimo, ητρον abdomen.

e Sympetrum ; abdomen laterally compressed. Ex. Vulgatum, Linn., &c.
Orthetrum ; abdomen laterally parallel. Ex. Cærulescens, Fab. Cancel-
latum, Linn.
Platetrum ; abdomen depressed and dilated. Ex. Depressum, Linn. Con-
spurcatum, Linn.
Leptetrum ; abdomen conical and pointed. Ex. Quadrimaculatum, Linn. Præ-
nubilium, Newman.

I may add that it is with great pleasure I have seen the divisions of Clairville's
genus, Colymbetes, lately raised by our friends on the continent to the rank of
genera. They had long since been similarly divided and labelled with MS. names
in my own cabinet—causing much good-humoured raillery among my acquaint-
ance, at my love of making divisions.