Family Linyphiidae

Family Linyphiidae
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1a	Tibia IV with two dorsal spines	2
1b	Tibia IV with one dorsal spine, which sometimes might be totally reduced	12
2a	Metatarsi IV with a trichobothria genus Macrargus
2b	Metatarsi IV without a trichobothria	3
3a	Tibia I without lateral spines	4
3b	Tibia I with at least a prolateral spine	6
4a	Femur I with a prolateral spine genus Centromerus
4b	Femur I without a prolateral spine	5
5a	TmI less than 0.30 (see formula =>) genus Agyneta
5b	TmI more or > equal 0.30 genus Tennesseellum
6a	Tibiae with ventral spines	7
6b	Tibiae without ventral spines	8
7a	Carapace pale with dark median bifid stripe, femora with small dark spots genus *Pityohyphantes*		<= Click to see photo
7b	Carapace dark without median bifid stripe, femora without dark spots genus *Linyphia* (sensu lato)
8a	Metatarsi with a dorsal spine genus *Lepthyphantes* (sensu lato)
8b	Metatarsi without spines	9
9a	Femora with dorsal spine(s) genus *Bathyphantes* (sensu lato)
9b	Femora without dorsal spine(s)	10
10a	Fenur I with a prolateral spine genus *Porrhomma*
10b	Femur I without a prolateral spine	11
11a	TmI more than 0.50 (see 5a for details) genus *Microneta*
11b	TmI less than 0.50 genus *Aphileta*
12a	Tibial spines totally reduced. Very small not larger than 2 mm spiders	13
12b	Tibiae with one or two dorsal spines	14
13a	Abdomen with dorsal scutum genus *Ceraticelus*
13b	Abdomen without dorsal scutum genus *Ceratinopsis*
14a	Metatarsus IV with a trichobothria	15
14b	Metatarsus IV without a trichobothria	20
15a	Tibial spination 2-2-1-1 (it means tibia I&II with 2 dorsal spines each, Tibia III-IV with only a spine each)	16
15b	Tibial spination 1-1-1-1 (it means all tibia with a dorsal spine each)	17
16a	Paired tarsal teeth comb-shaped genus Walckenaeria
16b	Paired tarsal teeth not comb-shaped genus Souessa
17a	Tibia I-II with ventral spines	18
17b	Tibia I-II without ventral spines	19
18a	Tibia I-II with 2-3 pairs of ventral spines genus Grammonota
18b	Tibia I-II with 4-6 pairs of ventral spines genus Maso
19a	TmI more than 0.80 (see 5a for details) genus Pocadicnemis
19b	TmI less than 0.80 genus Ceratinella
20a	Tibia I with ventral spines genus Hypselistes
20b	Ti I without ventral spines	21
21a	TmI more than 0.80 (see 5a for details) genus Ceratinopsidis
21b	TmI less than 0.80	22
22a	Tibial spination 1-1-1-1 (it means all tibia with a dorsal spine each, see 15b for details)	23
22b	Tibial spination 2-2-1-1 or 2-2-2-1 (it means tibia I&II with 2 dorsal spines each, tibia III-IV with only a spine each; or tibia I-II-III with 2 dorsal spines each, tibia IV with only a spine)	25
23a	Abdomen with dorsal scutum (see 13a for details) genus *Floricomus*
23b	Abdomen without dorsal scutum	24
24a	Body lenght less than 2 mm genus Eridantes
24b	Body lenght more than 2 mm genus Oedothorax
25a	Tibial spination 2-2-1-1 (see 15a for details)	26
25b	Tibial spination 2-2-2-1	28
26a	Margin of carapace with large teeth in male, small in female genus Erigone		<= click here to see image
26b	Margin of carapace without teeth	27
27a	TmI less 0.40 (see 5a for details) genus Scironis
27b	TmI more than 0.40	28
28a	Male carapace without cephalic pits genus *Dicymbium*
28b	Male carapace with cephalic pits	29
29a	Male: palpal tibia with a long curved apical apophysis genus Diplocephalus
29b	Male: palpal tibia with one or two small apical apophyses genus Tapinocyba
30a	Paracymbium with two thick, long setae genus Islandiana
	Paracymbium without setae	30
30b	TmI less than 0.40 (see 5a for details) genus Collinsia
31a	TmI more than 0.40 (see 5a for details) genus Eperigone

genus Agyneta

Agyneta fabra (Keyserling, 1886)
Agyneta micaria (Emerton, 1882)
Agyneta simplex (Emerton, 1926)
Agyneta unimaculata (Banks, 1892)
Agyneta zygia (Keyserling, 1886)

genus Aphileta

Aphileta misera (O.Pickard-Cambridge, 1882)

genus Bathyphantes (sensu lato)

Bathyphantes albiventris (Banks, 1892)
Bathyphantes brevis (Emerton, 1911)
Bathyphantes pallidus (Banks, 1892)
Diplostyla concolor (Wider, 1834)

genus Centromerus

Centromerus cornupalpis (O.Pickard-Cambridge, 1875)
Centromerus persolutus (O.Pickard-Cambridge, 1975)
Centromerus sylvaticus (Blackwall, 1841)

genus Ceraticelus

Ceraticelus carinatus (Emerton 1911)
Ceraticelus fissiceps (O.Pickard-Cambridge, 1874)
Ceraticelus laticeps (Emerton, 1894)
Ceraticelus minutus (Emerton, 1882)
Ceraticelus similis (Banks, 1892)

genus Ceratinella

Ceratinella brunnea Emerton 1882

genus Ceratinopsidis

Ceratinopsidis formosa (Banks, 1892)

genus Ceratinopsis

Ceratinopsis interpres (O.Pickard-Cambridge, 1874)

genus Collinsia

Collinsia oxypaederotipa (Crosby, 1905)
Collinsia plumosa (Emerton 1882)

genus Dicymbium

Dicymbium elongatum (Emerton, 1882)

genus Diplocephalus

Diplocephalus subrostratus (O. Pickard-Cambridge 1873)

genus Eperigone

Eperigone bryantae Ivie et Barrows, 1935
Eperigone contorta (Emerton 1882)
Eperigone entomologica (Emerton, 1911)
Eperigone index (Emerton 1914)
Eperigone maculata (Banks, 1892)
Eperigone tridentata (Emerton, 1882)
Eperigone trilobata (Emerton, 1882)
Eperigone undulata (Emerton, 1914)
Eperigone sp.

genus Eridantes

Eridantes erigonoides (Emerton, 1882)

genus Erigone

Erigone atra Blackwall, 1833
Erigone autumnalis Emerton, 1882
Erigone blaesa Crosby et Bishop, 1928
Erigone dentigera O.Pickard-Cambridge, 1874
Erigone dentosa O.Pickard-Cambridge, 1894

genus Floricomus

Floricomus nasutus (Emerton, 1911)
Floricomus plumalis (Crosby, 1905)

genus Grammonota

Grammonota gigas (Banks, 1896)
Grammonota inornata Emerton, 1882
Grammonota inusiata Bishop et Crosby, 1932
Grammonota ornata (O. P.-Cambridge, 1875)
Grammonota pictilis Chamberlin et Ivie, 1943

genus Hypselistes

Hypselistes florens (O. P.-Cambridge, 1875)

genus Islandiana

Islandiana longisetosa (Emerton 1882)

genus Lepthyphantes (sensu lato)

Lepthyphantes sabulosus (Keyserling, 1886)
Tenuiphantes tenuis (Blackwall, 1852)
Tenuiphantes zebra (Emerton, 1882)

genus Linyphia (sensu lato)

Microlinyphia pusilla (Sundevall, 1830)
Neriene clathrata (Sundevall, 1830)
Neriene radiata (Walckenaer, 1841)

genus Macrargus

Macrargus multesimus (O.Pickard-Cambridge, 1875)

genus Maso

Maso sundevalli (Westring, 1851)

genus Microneta

Microneta viaria (Blackwall, 1841)

genus Oedothorax

Oedothorax montiferus (Emerton, 1882)
Oedothorax trilobatus (Banks, 1896)

genus Pityohyphantes

Pityohyphantes subarcticus Chamberlin et Ivie, 1943

genus Pocadicnemis

Pocadicnemis pumila (Blackwall, 1841)

genus Porrhomma

Porrhomma terrestre (Emerton, 1882)
Porrhomma sp.

genus Scironis

Scironis tarsalis (Emerton, 1911)

genus Souessa

Souessa spinifera (O. Pickard-Cambridge 1874)

genus Tapinocyba

Tapinocyba sp.

genus Tennesseellum

Tennesseellum formica (Emerton, 1882)

genus Walckenaeria

Walckenaeria atrotibialis O.Pickard-Cambridge, 1878
Walckenaeria auranticeps (Emerton, 1882)
Walckenaeria castanea (Emerton 1882)
Walckenaeria directa (O.Pickard-Cambridge, 1874)
Walckenaeria exigua Millidge, 1983
Walckenaeria minuta (Emerton, 1882)
Walckenaeria pallida (Emerton, 1882)
Walckenaeria spiralis (Emerton, 1882)
Walckenaeria thrinax (Chamberlin et Ivie 1933)
Walckenaeria tumida (Crosby et Bishop, 1931)