Platycnemis pennipes female
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|Female platycnemis pennipes / Female White-legged Damselfly / Vrouwtje blauwe breedscheenjuffer / Weibchen Blaue Federlibelle / Femelle d'Agrion à larges pattes.|
Platycnemis pennipes (Pallas, 1771)
Adults. Adult body about 333639 mm long. Average wingspan 45 mm.
The eyes lateral and widely separated; brown (in the female), or blue (in the male).
Legs whitish blue, dark-lined along the upper surface. Hind tibia with a conspicuous featherlike expansion. Thoracic antehumeral stripes present (humeral stripes also conspicuous); blue, or green, or green to yellow (blue or greenish in the mature male, yellowish-greenish in the female).2. Pterostigma present; dark brown to reddish brown (in the male), or yellow (in the female).
Abdomen linear from base to tip, or linear from base to tip to linear from a conspicuously swollen base; 2731 mm long; predominantly grey ((-ish), in some females), or blue (with black markings, in males), or green (with black markings, in typical females); predominantly longitudinally lined to complexly patterned (with a median black line, crossed by a thin black band towards the posterior of segments 26; the line broadened and conspicuously medianly split on segments 8 and 9); without mid-dorsal spots. The male abdomen without auricles on segment 2; with paired inferior anal appendages.
Nymphs. The nymphs elongate and slender-bodied, gradually tapering posteriorly; when mature, 18.522 mm long.
The antennae with the scape considerably shorter than the other segments taken together; with the first flagellar segment shorter than the pedicel. The mask narrowed gradually to the hinge; without a median cleft. The outer margins of the labial palps armed with small spines. Distal margins of the labial palps rather irregularly finely toothed to coarsely toothed (with one large tooth). The moveable hooks of the labial palps without setae. The apical combs of the tibiae mainly of trifurcated setae.
The abdomen terminating in three conspicuous caudal gills. The three caudal appendages all lamellar. The caudal lamellae narrowly oblanceolate; (apiculate-) pointed (the apiculum longer than in Coenagriidae); hairy on both margins to beyond the middle; without nodes, and with no clear demarcation between proximal and distal series of marginal hairs; with much-branched primary tracheal branches leaving the main trunk at an upward angle. The gizzard with 816 radially symmetrical folds.
Classification. Zygoptera; family Platycnemididae.
General comments. Both sexes exhibit the featherlike expansion of the hind tibia which immediately distinguishes this species.
hansh, phlr has marked this note useful
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super focus and sharpness and - like always - natural colours. The background is a little noisy. Upon noise reduction, the damselfly will probably stand out even clearer (I tried a workshop).
Best wishes, Peter
- [2006-12-27 15:41]
Deze staat er toch wel loeischerp op. Op het groen grassprietje na vind ik dit één van je mooiere foto's. Prachtig beestje en evenzo vastgelegd.
great focus! your picture is very precise!