stomodaeum

• The true mouth is formed late by a tucking-in of epiblast, the stomodaeum (s.d.), which meets and fuses with the hypoblast, and is then perforated. —  Text Book of Biology, Part 1: Vertebrata
• The anus is formed by a tucking in, the proctodaeum, similar to the stomodaeum. —  Text Book of Biology, Part 1: Vertebrata
• Foregut: extends from the mouth to the end of gizzard; its epithelium being formed from the ectodermal invagination known as the stomodaeum. —  Explanation of Terms Used in Entomology
• An epiblastic tucking-in at st., the stomodaeum pre-figures the mouth; pr., the proctodaeum, is a similar posterior invagination which will become the anus. —  Text Book of Biology, Part 1: Vertebrata
• ); is cubitus 1, from media 4, to first anal (Comst First lateral suture: Odonata; starts from beneath base of front wing behind humeral suture and meets it behind second coxa First longitudinal vein: in Diptera; - radius 1 (Comst First submarginal cross-nervure: Hymenoptera; part of the media and the radio-medial cross vein (Comst Fissate: divided or split: with fissures or cracks Fissile -is: cleft or divided; as the wings in plume-moths: also used for lamellate Fissiparous: applied to that form of asexual generation in which the parent divides; each part becoming a new individual Fissure: a crevice: a narrow longitudinal opening: a slit Fissus: cleft: longitudinally divided nearly to base Fistula: a slender tube: specifically applied to the channel formed by the union of the two parts of proboscis in Lepidoptera Fistular: like a slender, cylindrical tube Flabellate: with long flat processes folding like a fan Flabelliform: fan-shaped Flabellum: a fan: a leafed structure: the transparent lobe at the end of the glossa in bees: also used as = flagellum; q.v Flabs: the lobes at the tip of the dipterous mouth:= labella; q.v Flaccid: feeble: limber: lax Flagelliform: whip-like; applied to a process Flagellum: that part of the antenna beyond the pedicel: a whip or whip-like process: the tail-like process of a spermatozoön Flammate -eus: flaming or fiery red [vermilion intensified Flange: a projecting rim or edge Flank: the sides of the thorax: the pleura Flaring: widening out like the mouth of a trumpet Flavescent: somewhat yellow Flavid: yellowed: sulphur yellow Flavo-testaceous: light yellow-brown: almost luteous Flavous -us: sulphur yellow [gamboge Flavo-vixens: green verging upon yellow [apple green + chrome yellow Flex: to bend: to curve back Flexible: pliable; with elastic properties Flexile -is: capable of being bent at an angle without breaking: flexible Flexuous -ose: almost zig-zag, without acute angles but more acute at angles than undulating: differs from sinuate in being alternately bent and nearly straight Flexor: that which bends; applied to muscles Flocculus -i: a hairy or bristly appendage on the posterior coxa of some Hymenoptera Floccus: a tuft of wool or wool-like hair Flosculiferous: species that bear a flosculus Flosculus: a small, tubular lunulate anal organ with a central style, in certain Fulgorids Fluviatile: inhabiting the margins of running streams Fly-blows: eggs or young maggots of flesh flies: meat is fly-blown when such eggs or larvae have been deposited on it Flying-hairs: very long slender surface hairs set in punctures Foetid glands: glandular structures from which a foul smelling liquid may be ejected Foliaceous: leaf-like, or resembling a leaf Folioles: leaf-like processes from a margin or protuberance Follicle: = cocoon, q.v.: a cellular sac or tube, as of a gland or ovary Folliculate: enclosed in a case, cocoon or follicle Food reservoir: Lepidoptera, a blind sac or diverticulum from the bind part of oesophagus lying in abdomen dorsal to the stomach Foot: the tarsus, q.v.; improperly used to = leg; but in the plural form refers to legs rather than tarsi: see feet Foot-shield: in caterpillars, the chitinous plate on outer side of abdominal feet Foot-stalk: of the maxilla, is the stipes Foramen: an opening in the body wall for the passage of a vessel or nerve: any opening at an apex: the opening of a cocoon Foramen magnum; the opening on the posterior surface of the head to give passage to those structures that extend from head to thorax occipital foramen Foramina: small openings in the body wall: in Orthoptera, the auditory organs on the anterior tibiae Forceps: hook or pincer-like processes terminating the abdomen, like specialized appendages of ear-wigs: similar processes in the male, used as clasping organs in copulation Forcipate: bearing forceps or similar structures Forcipiform: having the form of forceps or pincers Fore: anterior Foregut: extends from the mouth to the end of gizzard; its epithelium being formed from the ectodermal invagination known as the stomodaeum Forehead: in Mallophaga, the head in front of the mandibles and antennae Fore-intestine: =foregut, q.v Forficate: = forcipate, q.v Forks: Trichoptera; forks of veins in apical part of wing, numbered 1, 2, 3, etc Form: applied to representatives of a species which differ from the normal or type, in some uniform character; it is seasonal if it occurs at a period different from the type; dimorphic if there is an alternation of generations or two color patterns occur; or sexual if the members of one sex differ uniformly from those of the other Formic: of, pertaining to or derived from ants Formicary: an ant's nest or ant-hill Fornicate: arched or vaulted: concave within, convex without Fossa -ae: = fossula; q.v Fossoria: burrowers: in Orthoptera, the mole crickets and allies; in Hymenoptera, the digging wasps Fossorial: formed for or with the habit of digging or burrowing Fossula -ae: a deep groove or sinus with sharp edges: specifically applied to grooves on the head or sides of prothorax in which the antennae are concealed Fossulate: a surface with oblong impressions Fossulet: an elongated, shallow groove Fourth longitudinal vein: Diptera (Will media 2 (Comst Fovea, Foveola -ae: a shallow depression with well-marked sides: a pit Foveate: with foveae or pit-like depressions Foveolate: with shallow cavities like a honey-comb Fractus: broken: also applied to a geniculate antenna Fragile: easily breakable: thin and brittle Frass: the excrement; usually the excreted pellets of caterpillars Free: unrestricted in movement: not firmly joined with or united to any other part: said of pupae when all the parts and appendages are separately encased as in Coleopteran Frenatae: that series of Lepidoptera in which a more or less well-marked frenulum occurs Frenate: having a frenulum Frenulum: the spine, simple in males, compound in females, arising from the base of secondaries in many Lepidoptera, whose function it is to unite the wings in flight: in Cicada the triangular lateral piece on the mesonotum which connects with the trochlea: the anal area of secondaries and thus = tendo, q.v Frenulum hook: in the males of frenate Lepidoptera, a hook or fold into which the frenulum is fitted Frenum: that which holds things together: a lunate or triangular portion at the inner and hinder base of the wing in Odonata and Trichoptera; see tendo Fringe -es: an edging of hair, scales or other processes extending well beyond the margin and usually of even length: in Lepidoptera, fringes occur on the outer margins of all wings and consist of scales or hair projecting beyond the wing membrane Frog: the articular pan, - q.v Frons: = front; q.v Front: the anterior portion of head between base of antennae and below ocelli: in Homoptera, the vertical median area of face Frontal: referring to the front of head or anterior aspect of any part Frontal costa: Orthoptera, a prominent vertical ridge of bead which may be median or lateral: see median carina and lateral carina Frontal fastigium: in Orthoptera, that process of the face extending dorsad between the antennae and meeting or nearly meeting the fastigium of the vertex in Tettigidae Frontal fissure: Diptera; the impressed line extending from the frontal lunule to the border of the mouth Frontal lobes: in Psyllidae, two lobes or swellings more or less completely divided by a suture in which an ocellus is situated Frontal lunule: Diptera; an oval or crescentic space above the base of antennae in Cyclorrhapha, bounded by the frontal suture Frontal processes: Diptera; = antennal process, q.v Frontal ridge: in Coleopteran; a sharp ridge on the dorsal margin of the eye, extending forward Frontal stripe: Diptera; the middle of the front when membranous or discolored: = vitta frontalis Frontal suture: Diptera; separates the frontal lunule from that part of the head above it: in Coleopteran; = clypeal suture Frontal tubercles: in certain Aphids, are raised structures upon which the antennae are placed Frontal triangle: Diptera; the triangular space in males, between the eyes below, limited by a line drawn through base of antennae Frontal vesicle: in Odonata; that elevated area on the vertex upon which the ocelli are situated Fronto-orbital bristles: in Diptera; are placed on each side of the front, just below the vertical bristles Fugitive: soon disappearing; not permanent Fulcrant: the trochanter when continued along the femur, as in Carabids Fulcrum: the chitinous envelope at the base of mouth in Diptera and Hymenoptera, covering the beginning of the oesophagus: any structure that serves as a support to another Fulgidus: shining Fuliginous -osus: sooty or smoky brown [Van Dyke brown + a little black Fulvo-aeneous: brazen, with a touch of brownish yellow [brown pink Fulvous -us: tawny; light brown with much yellow; nearly orange [pale cadmium yellow + Indian red Fumate -us: smoky gray [gray Fumose: smoky Function: the work or duty which a given part or organ normally performs Fungicolous: living in or on fungi Funicle: the joints between the scape and club in Funiculate antennae: a small cord: a slender stalk Funiculate: whip-like: long, slender, composed of many flexible joints Funicule: a small, cord-like structure; especially when sheathed Funiculus: the main tendon of abdomen: in Hymenoptera a slender ligament connecting the propodeum to petiole on its dorsal aspect Furca: a fork: the anal appendage used for leaping in Thysanura; see furcula: the forked ental processes of the sternum Furcal orifice: see sternal into orifice Furcate: forked; divided nto two approximately equal divisions Furcula: a forked process: an osmaterium {Scanner's comment: sic. —  Explanation of Terms Used in Entomology

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