tegmen

(redirected from tegminal)
Also found in: Medical, Encyclopedia.

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.]

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

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.
Mentioned in ?
References in periodicals archive ?
levyi, with energy at 7 kHz and from 11 to 24 kHz, are likely the result of exciting radiating tegminal speculae into action, these then vibrating at their inherent resonance frequencies (Montealegre-Z et al.
1c,e,g,h); male stridulatory organ not protruding beyond the level of posterior tegminal margin; Cerci of male much thinner than second antennal segment very slightly and gradually widened and barely flattened outer margin (Fig.
Descripcion: Macho de medidas: Largo del fastigio al final de la tegminal 5,7; largo del fastigio al final del abdomen 14,8; largo de la prozona 1,1 ; largo de la metazona 1,05; largo total del pronoto 2,15; ancho del pronoto 1,75; ancho del femur posterior 1,6; largo del femur posterior 10,2; largo de la tegmina 11,45; diametro del ojo a 1,3; diametro del ojo b 1,6; distancia interocular 0,05; ancho de la cabeza gena-gena 1,9.
8); distal part of tegmen almost twice as narrow as widest part of proximal half (except in region of stridulatory apparatus); tegminal apex narrowly rounded; tegminal subcostal area almost without crossveins; tegminal R with 2 branches in distal third; area between tegminal M and CuA narrow (Fig.
Females practically apterous (minute tegminal lobes, hardly visible looking from behind under pronotum).
In one of the two females examined the elytra are shorter, just reaching the sixth abdominal tergite, showing that tegminal length is variable in this species).
Unlike in most other Tettigonioidea, female phaneropterines also usually possess tegminal stridulatory organs.
All of its winged species have females with tegminal stridulatory organs, and in a few species with completely reduced female tegmina, these organs are lost.
These groups can be distinguished by characteristics including: song type (chirping vs trilling and continuous vs interrupted); tegminal morphology; coloration of the head, pronotum, and abdomen; antennae color; and antennal markings on the pedicel and scape.
Tegminal pads slender, considerably surpassing second abdominal tergite; length three times greater than width, gradually expanding to their rounded apices; venation prominent, longitudinal, fairly regular.