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Satyrium acaciae / Sloe Hairstreak
Bishtakje e akacies
Lycaenidae - Theclinae
Satyrium acaciae (Fabricius , 1787). TL: S Russia.
 
  
1a. Satyrium acaciae, distribution map.  Historical data ;  Additional data from the 2018 update ;  New observations since the 2018 update.
1b. Satyrium acaciae ♂ underside. Romania (© Sylvain Cuvelier)
1c. Habitat of Satyrium acaciae. Hasi District, Albania (© Sylvain Cuvelier)
1d. Satyrium acaciae ♂ underside. Romania (© Sylvain Cuvelier)
1e. Satyrium acaciae ♀ with the typical black anal abdominal tuft. Mt. Ivani, Albania (© Lulëzim Shuka)
Description
♂♂
Small butterfly. Fw: 14-16 mm.
Hw: short tail on v2.
Ups: dark brown gc, rarely vestigial orange markings.
Upf: no sex-brand, unmarked.
Uns: paler brown gc, white postdiscal line on upf often absent or broken, well developed on hw.
Unh: orange marginal lunules in s1a to s3, small blue mark, in s2 black marginal spot on the distal side of the orange lunule.
♀♀
Similar size.
Abdomen: conspicuous black anal tuft.
Ups: dark brown gc, variable orange markings.
Uns: paler brown gc, white postdiscal line on upf often absent or broken, well developed on hw.
Unh: orange marginal lunules in s1a to s3, small blue mark, in s2 black marginal spot on the distal side of the orange lunule.
Similar species
Satyrium ilicis
Size: slightly larger Satyrium.
Upf: ♂♂  no sex-brand.
Uns: gc darker brown.
Unh:  discontinuous orange sm spots, black bordered on both sides.
Satyrium pruni
Size:slightly smaller Satyrium.
Upf: ♂♂ sex-brand.
Uph: ♂♂ conspicuous orange sm markings.
Unh: large orange sm band.
Unh:  sm band
edged with black spots.
Satyrium w-album
Size:slightly larger Satyrium.
Upf: ♂♂ sex-brand.
Unh: distinctive w-shaped pd white line.
Satyrium spini
Size:slightly larger Satyrium.
Upf: ♂♂ sex-brand.
Uph: ♂♂ round orange sm marking.
Unh: distinctive blue mark at anal angle.
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Life cycle
Adults: single generation from June to early August.
Egg: overwintering as small larva inside the chorion on a twig of the foodplant, 41-46 weeks.
Caterpillar: 31-52 days.
Pupa: 14-21 days.
Habitat
Satyrium acaciae inhabits dry, rocky areas with scattered low bushes and small trees with abundant Prunus spinosa from lowland up to 1600 (rarely up to 2000 m) m a.s.l.
Spatial requirement very modest, population density can be high.
Foodplants
Caterpillars feed mainly on Prunus spinosa, also mentioned are P. dulcis and Cotoneaster integerrimus.
Butterflies feed on honeydew and nectar of flowers of bushes and Rubus sp.
Distribution
Albania: local.
Balkan: AL - BG - BIH - GR - HR - NMK - MNE - RKS - RO - SLO - SRB
Europe: IB - IT - ALP - BAL - NWE - UK - SCA - EEU
Asia Minor, Transcaucasia, Caucasus and further east.
Conservation status
Satyrium acaciae is not endangered.
Albanian Red List: NE.
IUCN Red List, category at the Mediterranean level: LC.
Useful links
Bink 2015
Pyrgus.de
Lepiforum
Euroleps
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