Scymnus rubromaculatus
Taxonomy
- Polyphaga
- Cucujoidea
- Coccinellidae
- Scymnus
- Scymnus
- Scymnus rubromaculatus
Length: 1.3-1.5mm. Basic colour: black. Pattern: none. Number of spots: 0. Pronotum: black. Head colour: black with yellowish-brown mouthparts. Leg colour: black and yellowish-brown (at least tibiae ywllowish-brown). Other features: antennae and mouthparts yellowish-brown; hairs towards tip of elytra lie parallel to suture.
Habitats: deciduous woodlands, orchards, gardens, headrows, grasslands. Host plants: deciduous trees, Gorse, privet. Food: spider mites and small aphids. Overwintering sites: bark crevices, under bark.
Length: 1.5-2mm. Basic colour: brown. Pattern: dark brown to black along centre line, especially at the top, thus sometimes forming a dark T-shape. Number of spots: 0. Pronotum: black with brown tips, notably narrow. Head colour: black. Leg colour: brown. Other features: hairy.
Habitats: coniferous woodlands and trees. Host plants: needled conifers. Food: aphids and adelgids. Overwintering sites: sheltered positions on needled conifers, moss.
Length: 3mm. Background colour: beige. Pattern colour: black spots. Number of spots: 13-18 (16). Spot fusions: common: the three lateral spots on each elytron are usually fused. Melanic (black) forms: rare. Pronotum: beige with black spots. Leg colour: brown.
Fourth-instar larva: pale brown-grey with conspicuous long black hairs emanating from darker coloured tubercles. Pupa: pale yellowish brown with four rows of diffuse darker markings running longitudinally; remains of hairy fourth-instar larval skin visible at base.
Habitats: 16-spot ladybirds are commonly found in grassland. There are also records from scrub, saltmarsh and dune systems.
Host plants: Most 16-spot ladybird records are from grasses and other low plants, including reeds, nettle, dandelion, knapweed, hogweed, cow parsley and buttercup. This species has also been recorded from shrubs, including gorse, and from Scots pine.
Food: pollen, nectar, fungi.
Overwintering site: 16-spot ladybirds overwinter in low herbage, on gorse, in plant litter, on logs, fence posts and stone walls, often in extremely large aggregations.
Length: 1.8-2.2mm. Basic colour: black. Pattern: broad reddish-brown patch at rear of elytra. Number of spots: 0. Pronotum: black with reddish-brown front margin. Head colour: reddish. Leg colour: brown. Other features: hairy; tip of abdomen is reddish-brown.
Habitats: bogs, water margins and undisturbed grassland. Host plants: low-growing vegetation. Food: aphids. Overwintering sites: low down in low herbage.
Length: 1.6-2mm. Basic colour: brown. Pattern: a broad dark brown to black strip running along the centre line, widening at the top and bottom. Number of spots: 0. Pronotum: dark brown to black. Head colour: dark brown to black. Leg colour: brown, although variable. Other features: hairy.
Habitats: deciduous trees in marshy habitats. Host plants: willows and poplars. Food: aphids and scale insects. Overwintering sites: bark crevices and under the bark of willows and poplars.
Length: 1.5-2.2mm. Basic colour: black. Pattern: two red spots (roughly triangular in shape) at the front edges of the elytra. Number of spots: 2. Pronotum: black. Head colour: black. Leg colour: brown. Other features: hairy.
Habitats: various. Host plants: hedges, shrubs, trees, Ivy. Food: mealybugs and armoured scale insects. Overwintering sites: unknown.
Length: 2-2.8mm. Basic colour: black. Pattern: none. Number of spots: 0. Pronotum: black. Head colour: black. Leg colour: black with pale to dark brown tarsi. Other features: hairy.
Habitats: coniferous woodland and trees. Host plants: needled conifers. Food: aphids and adelgids. Overwintering sites: bark crevices and sheltered positions on needled conifers.
Length: 2.6-3.2mm. Basic colour: black. Pattern: two elongate red spots towards front of elytra. Number of spots: 2. Pronotum: black, with brown margins in male only. Head colour: brown (male), black (female). Leg colour: brown. Other features: hairy; rather elongate; brown mouthparts.
Habitats: heathland and other dry habitats. Host plants: low-growing vegetation. Food: aphids. Overwintering sites: leaf litter, grass tussocks and the rosettes of perennial plants.