Stigmella - Genital keys
A3: c) S.basiguttella vs S.samiatella vs ♀S.atricapitella
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Male:
Aedeagus v.long (2x genital capsule) packed with long curved spines > S.basiguttella
Aedeagus shorter (1.2x genital capsule) with sparse cornuti in 3 bundles > S.samiatella
Aedeagus v.long (2x genital capsule) packed with long curved spines > S.basiguttella
Aedeagus shorter (1.2x genital capsule) with sparse cornuti in 3 bundles > S.samiatella
Female:
Accessory lobe with a very distinctive large spined sclerotised plate > S.basiguttella
Ductus bursae with a very distinctive long band of spines > S.samiatella
Not as above; sclerotisation of accessory lobe confined to posterior end > S.atricapitella
Accessory lobe with a very distinctive large spined sclerotised plate > S.basiguttella
Ductus bursae with a very distinctive long band of spines > S.samiatella
Not as above; sclerotisation of accessory lobe confined to posterior end > S.atricapitella
B1: b) S.crataegella vs S.hybnerella
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Male:
Uncus broad, without lobes; gnathos horns slender, widely spaced, horizontal bar long > S.hybnerella
Uncus bilobed; gnathos horns broad, horozontal bar short forming a U > S.crataegella
Uncus broad, without lobes; gnathos horns slender, widely spaced, horizontal bar long > S.hybnerella
Uncus bilobed; gnathos horns broad, horozontal bar short forming a U > S.crataegella
Female:
Accessory lobe very long (¾ length of abdomen) with 6-7 convolutions > S.hybnerella
No information (but unlikely to be as above) > S.crataegella
Accessory lobe very long (¾ length of abdomen) with 6-7 convolutions > S.hybnerella
No information (but unlikely to be as above) > S.crataegella
B1: d) ♀S.prunetorum vs ♀S.aceris
Anterior apophyses slender; accessory lobe complex with 2-3 spined compartments > S.prunetorum
Anterior apophyses broad and short; corpus bursae with a band of spines; accessory lobe small > S.aceris
Anterior apophyses broad and short; corpus bursae with a band of spines; accessory lobe small > S.aceris
B3: a) 1: S.salicis vs S.obliquella vs S.myrtilella
Male:
Gnathos horns fused at base > S.obliquella
(Usually) 5 or 6 cornuti of unequal length > S.salicis
(Usually) 3 or 4 cornuti of equal length > S.myrtilella
Gnathos horns fused at base > S.obliquella
(Usually) 5 or 6 cornuti of unequal length > S.salicis
(Usually) 3 or 4 cornuti of equal length > S.myrtilella
Female:
Ovipositor protruding; anal tufts ½ length of apophyses; corpus bursae with sparse pectination > S.salicis
Ovipositor slightly protruding; anal tufts full length of apophyses; corpus bursae with dense pectination >S.myrtilella
Ovipositor not protruding; anal tufts full length of apophyses; apophyses short; corpus bursae with dense pectination; spermatheca with small spines >S.obliquella
Ovipositor protruding; anal tufts ½ length of apophyses; corpus bursae with sparse pectination > S.salicis
Ovipositor slightly protruding; anal tufts full length of apophyses; corpus bursae with dense pectination >S.myrtilella
Ovipositor not protruding; anal tufts full length of apophyses; apophyses short; corpus bursae with dense pectination; spermatheca with small spines >S.obliquella
B3: a) 2: S.lapponica vs S.confusella vs S.malella vs ♂S.sorbi
Male:
Gnathos with a broad median lobe: aedaegus with ~70 small thorns the apical 20 of which are distinctly larger than the rest > S.lapponica
Gnathos with a broad median lobe: aedaegus with ~70 small thorns of similar size > S.confusella
Gnathos with horns; vinculum slightly broader than long > S.malella
Gnathos with horns; vinculum distinctly longer than broad > S.sorbi
Gnathos with a broad median lobe: aedaegus with ~70 small thorns the apical 20 of which are distinctly larger than the rest > S.lapponica
Gnathos with a broad median lobe: aedaegus with ~70 small thorns of similar size > S.confusella
Gnathos with horns; vinculum slightly broader than long > S.malella
Gnathos with horns; vinculum distinctly longer than broad > S.sorbi
Female:
Genitalia ¾ length of abdomen > S.malella
Genitalia < ¾ length of abdomen > S.lapponica, S.confusella. No information on distinguishing these species
Genitalia ¾ length of abdomen > S.malella
Genitalia < ¾ length of abdomen > S.lapponica, S.confusella. No information on distinguishing these species
B3: b) 3: S.sakhalinella, S.luteella, S.glutinosae, S.centifoliella, S.betulicola
Male:
Gnathos horns broad and close-set > S.centifoliella (gnathos horns slender and widely separated in the remaining species)
Transtilla with distinct lateral processes > S.betulicola (transtilla bilobed without distinct processes in the remaining species)
Anterior emargination of vinculum shallow; apex of valva abruptly narrowed > S.sakhalinella
Anterior emargination of vinculum deep V-shaped > S.glutinosae
Anterior emargination of vinculum deep U-shaped > S.luteella
Gnathos horns broad and close-set > S.centifoliella (gnathos horns slender and widely separated in the remaining species)
Transtilla with distinct lateral processes > S.betulicola (transtilla bilobed without distinct processes in the remaining species)
Anterior emargination of vinculum shallow; apex of valva abruptly narrowed > S.sakhalinella
Anterior emargination of vinculum deep V-shaped > S.glutinosae
Anterior emargination of vinculum deep U-shaped > S.luteella
Female:
Corpus bursae without signa > S.centifoliella (a pair of elongate signa is present in the remaining species)
Corpus bursae extensively pectinate; signa large > S.sakhalinella
Corpus bursae pectinate in posterior half; signa short > S.betulicola
Corpus bursae with pectinations absent or indistinct, (signa variable) > S.luteella, S.glutinosae - indistinguishable from each other
Corpus bursae without signa > S.centifoliella (a pair of elongate signa is present in the remaining species)
Corpus bursae extensively pectinate; signa large > S.sakhalinella
Corpus bursae pectinate in posterior half; signa short > S.betulicola
Corpus bursae with pectinations absent or indistinct, (signa variable) > S.luteella, S.glutinosae - indistinguishable from each other
B4: a) 2: S.aurella vs S.splendidissimella
Male:
Aedeagus 1.5x as long as capsule; distal process of valva pointed, at 90° to outer margin > S.aurella
Aedeagus slightly longer than capsule; distal process of valva long and slightly curved; transtilla very broad > S.splendidissimella
Aedeagus 1.5x as long as capsule; distal process of valva pointed, at 90° to outer margin > S.aurella
Aedeagus slightly longer than capsule; distal process of valva long and slightly curved; transtilla very broad > S.splendidissimella
Female:
Ductus bursae not expanded; accessory lobe much larger than corpus bursae > S.aurella
Ductus bursae expanded; accessory lobe smaller than corpus bursae > S.splendidissimella
Ductus bursae not expanded; accessory lobe much larger than corpus bursae > S.aurella
Ductus bursae expanded; accessory lobe smaller than corpus bursae > S.splendidissimella
B4: b) 1: ♀S.alnetella vs ♀S.regiella vs ♀S.filipendulae
Pair of elongate signa in corpus bursae > S.alnetella
Accessory lobe small > S.regiella
Accessory lobe same size as corpus bursae > S.filipendulae
Accessory lobe small > S.regiella
Accessory lobe same size as corpus bursae > S.filipendulae
B4) b) 2: S.betulicola vs S.plagicolella
Male:
Uncus not lobed; gnathos horns widely spaced; aedeagus ½ as long as capsule > S.betulicola
Uncus bilobed, the lobes bifid; gnathos horns close-set; aedeagus about as long as capsule > S.plagicolella
Uncus not lobed; gnathos horns widely spaced; aedeagus ½ as long as capsule > S.betulicola
Uncus bilobed, the lobes bifid; gnathos horns close-set; aedeagus about as long as capsule > S.plagicolella
Female:
Pair of elongate signa in corpus bursae > S.betulicola
Corpus bursae with dense pectination but no signa > S.plagicolella
Pair of elongate signa in corpus bursae > S.betulicola
Corpus bursae with dense pectination but no signa > S.plagicolella
C2: b) S.tiliae vs S.spinosissimae vs S.viscerella vs S.minusculella vs S.samiatella vs ♀S.atricapitella
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Male:
Cornuti consisting of an anterior cordate plate with two long needles extending from its lateral margins > S.tiliae
Aedeagus ½ as long as capsule > S.viscerella
Aedeagus with a low density of cornuti in 3 groups > S.samiatella
Genital capsule distinctly elongate; lateral angles of vinculum broad; Uncus bilobed, the lobes not bifid, with a U-shaped notch between the lobes about the same size as a lobe > S.spinosissimae
Lateral angles of vinculum narrow; Uncus bilobed, the lobes not bifid, the notch between the lobes wider than a lobe > S.minusculella
Cornuti consisting of an anterior cordate plate with two long needles extending from its lateral margins > S.tiliae
Aedeagus ½ as long as capsule > S.viscerella
Aedeagus with a low density of cornuti in 3 groups > S.samiatella
Genital capsule distinctly elongate; lateral angles of vinculum broad; Uncus bilobed, the lobes not bifid, with a U-shaped notch between the lobes about the same size as a lobe > S.spinosissimae
Lateral angles of vinculum narrow; Uncus bilobed, the lobes not bifid, the notch between the lobes wider than a lobe > S.minusculella
Female:
Ductus bursae with a long band of spines > S.samiatella
Accessory lobe with sclerotised folds with spines at posterior end of corpus bursae > S.atricapitella
Genitalia ⅘ length of abdomen > S.viscerella
Corpus bursae large with dense rows of transverse pectinations; accessory lobe very small > S.spinosissimae
Accessory lobe straight > S.minusculella
I have found no information for distininguishing ♀S.tiliae
Ductus bursae with a long band of spines > S.samiatella
Accessory lobe with sclerotised folds with spines at posterior end of corpus bursae > S.atricapitella
Genitalia ⅘ length of abdomen > S.viscerella
Corpus bursae large with dense rows of transverse pectinations; accessory lobe very small > S.spinosissimae
Accessory lobe straight > S.minusculella
I have found no information for distininguishing ♀S.tiliae
C3: b) 3: S.viscerella, S.paradoxa, (S.magdalenae), S.nylandriella, S.oxyacanthella, S.minusculella, S.incognitella, S.perpygmaeella, ♀S.svenssoni, ♀S.ruficapitella, ♀S.roborella
Male:
Genital capsule distinctly elongate; vinculum very long with a deep emargination and broad lateral angles
Uncus bilobed, the lobes truncate; gnathos bar very broad, horns robust; aedeagus ½ length of capsule > S.viscerella
Uncus more emarginate than lobed (these 3 are very similar and somewhat variable):
Genital capsule distinctly elongate; vinculum very long with a deep emargination and broad lateral angles
- Gnathos horns+bar V-shaped; lateral arms broad > S.incognitella
- Gnathos horns+bar U-shaped; lateral arms moderate > S.perpygmaeella
Uncus bilobed, the lobes truncate; gnathos bar very broad, horns robust; aedeagus ½ length of capsule > S.viscerella
Uncus more emarginate than lobed (these 3 are very similar and somewhat variable):
- Aedeagus distinctly longer than capsule; distal process of valva very long > S.minusculella
- Aedeagus slightly longer than capsule; distal process of valva moderate > S.nylandriella
- Aedeagus slightly shorter than capsule; distal process of valva shortish > S.oxyacanthella
Female
Ductus bursae with a broad single coil filled with large spines > S.roborella
Large sclerotised plate in accessory lobe > S.svenssoni
Small sclerotised plate and spines at posterior end of accessory lobe > S.ruficapitella
Apophyses very long, anterior - broad-based, tapering, posterior - slender
Corpus bursae large, covered in pectination
Ductus bursae with a broad single coil filled with large spines > S.roborella
Large sclerotised plate in accessory lobe > S.svenssoni
Small sclerotised plate and spines at posterior end of accessory lobe > S.ruficapitella
Apophyses very long, anterior - broad-based, tapering, posterior - slender
- Ductus bursae expanded at posterior end; corpus bursae pectinate in anterior ½ > S.incognitella
- Ductus bursae with a small pouch; corpus bursae without pectination > S.perpygmaeella
Corpus bursae large, covered in pectination
- Genitalia ⅘ length of abdomen > S.viscerella
- Anal papillae (and abdominal apex) very broad; posterior apophysis with a small basal hook > S.paradoxa