Common Flathorn Plant Bug

Common Flathorn Plant Bug

Heterotoma planicornis

Daily sighting probability <5% · Rare
at Helsinki

In 3 days ~10% in a week ~20%

6 Verified sightings at Helsinki
August Best month

About the Common Flathorn Plant Bug

Heterotoma planicornis is a species of bug from Miridae family. Heterotoma planicornis can reach a length of about 4.6–5.3 millimetres (0.18–0.21 in) in males, while females are quite longer, reaching 4.9–5.5 millimetres (0.19–0.22 in).

The species are black or dark red coloured with pale green legs. Adults have some short hairs and strange shaped antennae, with a large flattened second antennal segment (hence the Latin species name planicornis, meaning flat horn). The nymphs are reddish in color and also have said strange antennae.

These species are look almost like its counterpart, Heterotoma merioptera and can be difficult to distinguish. The eggs are laid into young wood, hatch in May and the nymphs become adults by June. Adults occur from July to September. The eggs overwinter. This plant sucker shows one generation per year.

The nymphs and adults are active predators of spiders, aphids and mites. They are polyphagous, feeding on various insects (Psyllidae species, aphids and small other insects, Chrysomelidae and Lepidoptera eggs), but also on numerous plants and trees.

They prefer unripe fruits, buds, juices and nectar of various plants, mainly... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Birmingham 🇬🇧 United Kingdom
~10%
2 Brussels 🇧🇪 Belgium
~10%
3 Sacramento 🇺🇸 United States
~10%
4 Portland 🇺🇸 United States
~10%
5 Liverpool 🇬🇧 United Kingdom
~10%
6 Berlin 🇩🇪 Germany
~10%
7 Paris 🇫🇷 France
~10%
8 Leeds 🇬🇧 United Kingdom
~10%
9 Lyon 🇫🇷 France
<5%
10 Manchester 🇬🇧 United Kingdom
<5%

Before you go

What are the chances of seeing a Common Flathorn Plant Bug in Helsinki?

Rare

Under 5% of wildlife watchers report a Common Flathorn Plant Bug sighting in Helsinki on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 665th most-seen of the 838 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.

When is the best time to see a Common Flathorn Plant Bug in Helsinki?

July and August

In those months about 10% of wildlife watchers report a Common Flathorn Plant Bug in Helsinki on a given day, against under 5% in September to June, the lowest months.

Is Helsinki the best place to see a Common Flathorn Plant Bug?

15th of 23

Of the 23 cities where we can rate Common Flathorn Plant Bug sightings, Helsinki ranks 15th at under 5%. The best odds are in Birmingham (United Kingdom, about 10%), Brussels (Belgium, about 10%) and Sacramento (United States, about 10%).

Where does the Common Flathorn Plant Bug sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Common Flathorn Plant Bug is recorded against all the insects logged in Helsinki (6 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.

← Back to Helsinki