Tryonicus parvus
In 3 days ~20% in a week ~40%
The Tryonicidae are a family of cockroaches. Two genera containing 17 species are currently confirmed as belonging to this family, including the South American housebug. Table 1: Number of species of Tryonicidae in each region in which it is present (A=adventive, E=endemic, I=indigenous)
Beccaloni & Eggleton's (2011) figures of '10 genera, 47 species' presumably does not take into account Murienne's (2009) publication (they do not cite it) According to Murienne (2009: 49), the tribe Methanini certainly belongs to the Blattidae: Polyzosteriinae, as probably does the group of New Caledonian endemic genera Angustonicus, Pallidionicus, Pellucidonicus, Punctulonicus, and Rothisilpha
A report has been published of an unidentified endemic "tryonicine" from New Zealand, in addition to the adventive Tryonicus parvus, but details are too sketchy at present to accept this record. Klass, K.-D.; Meier, R. 2006: A phylogenetic analysis of Dictyoptera (Insecta) based on morphological characters. Entomologische Abhandlungen, 63(1-2): 3-50. PDF Archived 2016-04-14 at the Wayback Machine
McKittrick, F.A.; Mackerras... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Auckland | 🇳🇿 New Zealand |
With luck
About 10% of wildlife watchers report a Tryonicus parvus sighting in Auckland on a given day, based on 41 verified sightings from GBIF citizen-science data. It is the 167th most-seen of the 689 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
February–September and November–December
In those months about 10% of wildlife watchers report a Tryonicus parvus in Auckland on a given day, against under 5% in January and October, the lowest months.
Only Auckland, in our data
Auckland is the only city on Wallace's Line with enough records to rate Tryonicus parvus sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Blattodea
The closest relatives of the Tryonicus parvus that you can see in Auckland (order Blattodea, Cockroaches and Termites) are Balta bicolor (about 20%), Gisborne Cockroach (about 10%) and Neotemnopteryx fulva (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tryonicus parvus is recorded against all the insects logged in Auckland (41 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.
