tegmen

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Related to tegmina: hemelytra

teg·men

 (tĕg′mən)
n. pl. teg·mi·na (-mə-nə)
A covering or integument, especially:
a. The thin plate of bone that covers the middle ear.
b. The tough leathery forewing of certain insects.
c. The inner layer of a seed coat.

[Latin tegimen, tegmen, covering, from tegere, to cover; see (s)teg- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

tegmen

(ˈtɛɡmən)
n, pl -mina (-mɪnə)
1. (Zoology) either of the leathery forewings of the cockroach and related insects
2. (Botany) the delicate inner covering of a seed
3. (Botany) any similar covering or layer
[C19: from Latin: a cover, variant of tegimen, from tegere to cover]
ˈtegminal adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

teg•men

(ˈtɛg mən)

n., pl. -mi•na (-mə nə)
1. a covering or integument, esp. of a plant or animal.
2. the delicate inner coat of a seed.
3. either of a pair of leathery forewings extending over the hind wings in certain insects.
[1800–10; < Latin: covering (also tegumen, tegimen) =teg(ere) to cover + -men n. suffix]
teg′mi•nal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Thorax brownish red; pronotum brown, hexagonal, with a median carina strongly marked; pronotum with anterior margin straight, lateral-anterior margins straight, lateral posterior margin slightly sinuous, posterior margin grooved; scutellum brownish with slight central concavity, tegmina castaneous, apical plexus of veins developed; hindwings hyaline with brownish venation, vein Cu1 not thickened at base; legs brownish red; metathoracic tibia with two lateral spines (basal spine equal in size to spines in apical crown; apical spine larger than spines in apical crown); apical crown of spines on tibia consisting of two rows; basitarsus with three rows of spines covered by long setae; subungueal process present and triangular.
black varnish on tegmina, green coloration, size, etc., being open to considerable variation.
No obstante, pueden diferenciarse de la manera siguiente: en Microcentrum la cabeza es mas ancha y robusta que en Phylloptera; las tegmina tienen el area anterior dorsal triangular extendiendose posteriormente, mas alla que en Phylloptera; las tegmina son redondas pero no de forma regular como en Phylloptera, el margen dorsal (interior) es mas recto casi hasta la punta, el margen dorsal externo (superior) declina suavemente hacia la punta, de modo que distalmente las tegmina se estrechan y la punta es mas angosta que en Phylloptera.
Prothorax with two long slender spines ventrally between forelegs, tegmina without distinct dots
Eyes round; partially hemispherical; pronotum with acute humeral notches on lateral lobes; Tegmen, wing fully developed; tegmina of moderate width short as compare to wings.
The new genus is related to the Triassic representatives of Xenopteridae as their tegmina have the following synapomorphies: tegmen is rather small (9-24 mm long); Sc ends well before the apical part of the tegmen; branches of RA are comb-like; proximal (free) part of MP is strongly reduced, indistinguishable from a cross-vein; branches of MP+[CuA.sub.1] are not numerous and occupy a rather narrow area; base of CuA2 is situated in the middle part of the tegmen, not very far from the RS base.
(1) Computed tomography of the temporal bone is recommended to assess middle ear or mastoid lesions for erosion of the labyrinth, facial canal, and tegmina. (9)
Poekillopteraphalaenoides is characterized by having general pale yellowish color with black spots on the tegmina and wings (Figs 1C-D) (Costa Lima 1942).