Calamagrostis small-reed
(For a dichotomous table for galls on Calamagrostis by Hans Roskam click here)
Dichotomous table for leafminers
1a larva with chitinised head; in narrow parts of the mine frass in a central line => 2
1b larva a maggot; in narrow parts frass in two lines along the sides => 3
1c galls, etc => Tables for all parasites per species
Dichotomous table for leafminers
1a larva with chitinised head; in narrow parts of the mine frass in a central line => 2
1b larva a maggot; in narrow parts frass in two lines along the sides => 3
1c galls, etc => Tables for all parasites per species
2a a number of Elachistidae; the larvae are not sufficiently known to enable the construction of a key: Elachista adscitella, albidella, albifrontella, apicipunctella, argentella, bifasciella, bisulcella, deriventa, dimicatella, elegans, fasciola, griseella, maculicerusella, obliquella, pomerana, pullicomella, stabilella, subalbidella, subnigrella, vonschantzi
3a larva: mandible with 1 tooth; at the start of the mine (may be inside a leaf sheath) at the outside an egg shell: Hydrellia griseola
3b mandible with 2 or more teeth; no egg shell visible => 4
4a mine begins in the leaf blade or the leaf sheath, descends into the inside of the sheath; there also the puparium: Cerodontha denticornis
4b mine entirely in the blade => 5
5a larva: cephalic skeleton of Agromyzinae-type ** => 6
5b cephalic skeleton of Phytomyzinae-type => 8
6a larva solitary => 7
6b larvae communal: Agromyza nigrella / A. mobilis
7a larva: rear spiracula separated by 3-4 x their diameter; rear end of cut off at a right angle: Agromyza rondensis
7b rear spiracula almost touching each other; rear end cut off obliquely: Agromyza albipennis
8a pupation outside the mine => 9
8b puparium in the mine => 12
9a larva yellow => 10
9b larva whitish => 11
10a larva: posterior spiraculum with 3 papillae: Liriomyza flaveola
10b posterior spiraculum with ≥ 12 papillae: Cerodontha flavocingulata
11a species of dry habitats; rear spiraculum dagger-shaped: Cerodontha atra
11b species of wet situations; rear spiraculum shaped like a boat hook: Cerodontha calamagrostidis
12a puparium: front spiracula penetrating the epidermis: Chromatomyia nigra
12b puparium not in connection with the outside world => 13
13a puparium anchored in the mine with a strand of silk => 14
13b puparium loose in the mine => 17
14a larva: the black warts at the outside of the rear spiracula without a “root”: Cerodontha incisa
14b these warts with a distinct “root” => 15
15a warts small: Cerodontha melicae
15b warts large => 16
16a mountain species: Cerodontha pygmella
16b lowland species: Cerodontha pygmaea
17a puparium unusually slender, almost resembling a caterpillar, in the leaf sheath: Cerodontha hennigi
17b puparium squat as usual, in the blade => 18
18a larva: rear arms of the cephalic skeleton weakly chitinised, pale; puparium: yellow- to dark brown, intersegmental constrictions shallow => 19
18b rear arms of cephalic skeleton strongly chitinised, dark brown; puparium metallic black, intersegmental constrictions rather deep: Cerodontha calamagrostidis
19a larva: segments laterally covered with fine spinulation over their entire width: Cerodontha beigerae
19b spinulation only at the front and rear margins of the segments: Cerodontha imbuta
* See also the key to grass-inhabiting Agromyza-larvae.