Immature stages of the Rubiaceae-feeding
metalmark butterflies (Lepidoptera: Riodinidae),
and a new function for the tentacle nectary organs
November
2018
Gregory J. Nielsen and Lucas A.
Kaminski;
Metalmark butterfly (Riodinidae) diversity is heavily
concentrated in the Neotropical lowland forests
but despite their prevalence basic information on
immature stages is still scarce.
Here we describe the life cycle of seven taxa in
the Rubiaceae-feeding section of the Mesosemiina, including three Mesosemia Hübner, [1819], three Leucochimona Stichel, 1909, and the first
information for Semomesia Westwood, 1851. Immature stage
morphology of Mesosemia cippus Hewitson, 1859 is described in
detail through scanning electron microscopy.
Generally, eggs are laid singly and caterpillars
are folivorous with a cryptic green coloration
except for M. cippus which has gregarious
caterpillars with a bright yellow color pattern.
The genus Sapphire
Metalmarks, Lasaia (H. Bates, 1868) contains arround
14 species, all of which are found exclusively in
the neotropics. They are small butterflies,
averaging about 28 to 32 mm in wingspan. Males
have extremely reflective wing scales, shimmering
in metallic turquoise, blue or steely grey
according to species. Females are generally a
dull earthy brown colour. Both sexes have a
similar pattern of black spots.
Males are often seen along the
sandbanks with others butterflies along small
streams, where they suck minerals and ammonia, as
well as the droppings from mammals.
Females are rarely seen,
and lives mostly up in the bushes and trees of Mimose, Albizia species. Pea, Fabaceae family which is the foodplant for
the caterpillar.
Lars
Andersen and
Peter Møllmann has so far seen three
species in Bolivia: Glittering Sapphire, Lasaia agesilas (Latreille, 1809). Cat's-eye
Sapphire, Lasaia
arsis(Staudinger, 1887) & Kenneth's
Sapphire, Lasaia kennethi(Weeks, 1901).
But there are certainly several species?
Sapphire
Metalmarks species
you maybe can expect to find in Bolivia are: Variegated
Sapphire, Lasaia meris (Stoll, 1781). Bolivian Sapphire, L. moeros (Staudinger, 1888). L. aerugo (Clench, 1972). Clench's
Sapphire, L.
pseudomeris (Clench,
1972). Oily Sapphire, L. ouleus (Godman, 1903) and L. incoides (Schaus, 1902).
Kenneth's Sapphire or Kenneth's
Lasaia, Lasaia kennethi(Weeks, 1901)
Great Jewelmark, Anteros
kupris aureocultus (Stichel, 1909)
Principalis
Jewelmark, Anteros principalis (Hopffer 1874).
Caranavi 1200 m., Yungas, Bolivia
december 13 - 20, 2021.
Photographer; Gottfried Siebel
Principalis
Jewelmark, Anteros principalis (Hopffer,
1874).
Caranavi Highlands, Yungas,
Bolivia
january 28, 2019.
Photographer; Peter
Møllmann
Principalis
Jewelmark, Anteros principalis (Hopffer,
1874).
Coroico, Yungas, Bolivia
november 4, 2017.
Photographer; Hiroaki
Takenouchi
Principalis
Jewelmark, Anteros
principalis (Hopffer,
1874).
The adults
are elusive, and usually encountered singly, in
the vicinity of rivers or streams. They normally
rest on the upper surface of leaves, and always
hold their wings erect when settled.
This species is found in undisturbed rainforest
habitats at altitudes between 0-1100m.
The caterpillar folds the edge of a leaf into a
tube and lives within. The foodplants include Vochysia (Vochysiaceae) and Miconia (Melastomataceae).
Is distributed on the eastern slopes of the Andes
from Colombia, Ecuador to Peru and Bolivia.
There are 22 species in
the genus Anteros, distributed variously
from Mexico to Bolivia. The genus is closely
allied to Sarota and Helicopis in Riodinidae family, and like them is
characterised by having silvery markings on the
underside wings, and very "furry" legs.
Riodinidae are a pantropical family, with the
majority of species occurring in the Amazonas and
Andeans eastside. There are
around 1300 to 1325? known species of Riodinidaein the neotropical region, from Mexico
to Argentina.