Dioryctria reniculelloides
In 3 days ~10% in a week ~20%
Dioryctria reniculelloides, the spruce coneworm, is a moth of the family Pyralidae. The species was first described by Akira Mutuura and Eugene G. Munroe in 1973. It is found from Nova Scotia to Alaska, south in the east to New York, and south in the west to California and New Mexico. It was recorded from China in 2009. Occasionally abundant, often in conjunction with epidemics of the spruce budworm, the spruce coneworm (Dioryctria reniculelloides Mutuura & Munroe) occurs through most or all of the range of spruce in North America, feeding on new foliage and cones of spruce, and often balsam fir (Ives & Wong 1988). When abundant, it can be a serious pest "particularly on white spruce" (Hedlin et al. 1980).
The wingspan is 9.5–11 mm. Adults are on wing from June to August in one generation per year. The larvae feed on Picea, Pseudotsuga menziesii, Tsuga, Abies and Pinus contorta. Larvae of the spruce budworm sometimes cause superficial damage on cones, but their effect on the seed crop is minimal (Ives & Wong 1988), at least in central Canada. Capable of causing less than 10% of a seed crop, the larvae of the cone cochylid (Henricus fuscodorsana Kearfott) feed in the cones, damaging scales and seed (Hedlin et al. 1980). The species overwinters as a first-instar larva. Pupation takes place in late June and early July. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Spruce Coneworm Moth sighting in Portland on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 427th most-seen of the 507 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Spruce Coneworm Moth in Portland on a given day, so our monthly data shows no clear season.
Only Portland, in our data
Portland is the only city on Wallace's Line with enough records to rate Spruce Coneworm Moth sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Pyralidae
The closest relatives of the Spruce Coneworm Moth that you can see in Portland (family Pyralidae, Pyralid Snout Moths) are Meal Moth (about 10%) and Indian-Meal Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spruce Coneworm Moth is recorded against all the insects logged in Portland (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.
