// Workers AI · dad joke modeWhat did Physokermes say? I'm stuck on you.
| Physokermes | |
|---|---|
 | |
| Bud scales | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Insecta |
| Order: | Hemiptera |
| Suborder: | Sternorrhyncha |
| Family: | Coccidae |
| Genus: | Physokermes Targioni Tozzetti 1868 |
| Species | |
|
See text | |
Physokermes are a genus of scale insects known as the bud scales. They are restricted to the Holarctic,[1] though Physokermes hemicryphus has been introduced to North America.[2] Some species are plant pests.
Morphology
[edit]Pre-reproductive females are membranous and reddish-brown, once females begin to lay eggs they are globular or kidney-shaped become light to dark brown, and eventually heavily sclerotized.[3] The adult females resemble the bud of their coniferous hosts,[4] hence the name bud scale.
Physokermes are difficult to identify to species, as only pre-reproductive females can be used.[4] Once females begin to oviposit, their bodies become distorted and it is not possible to detect the morphological features necessary to identify them to species.
Species
[edit]There are 13 described species in the genus Physokermes:[3]
- Physokermes coloradensis Cockerell 1895
- Physokermes concolor Coleman 1903 - fir bud-scale
- Physokermes fasciatusBorchsenius 1957
- Physokermes hellenicus Kozár & Gounari 2012
- Physokermes hemicryphus (Dalman) 1826 - small spruce bud-scale
- Physokermes inopinatus Danzig & Kozár 1973 - Hungarian spruce bud-scale
- Physokermes insignicola (Craw) 1894 - Montery pine scale
- Physokermes jezoensis Siraiwa 1939
- Physokermes picaefoliae Tang 1984
- Physokermes piceae (Schrank) 1801 - spruce bud-scale
- Physokermes shanxiensis Tang 1991
- Physokermes sugonjaevi Danzig 1972
- Physokermes taxifoliae Coleman 1903 - Douglas fir scale
References
[edit]- ↑ Kozar, F; Gounari, S; Hodgson, C; Fetyk, K; Goras, G. "A new species of Physokermes Targioni Tozzetti (Hemiptera: Coccoidea: Coccidae) from Greece". Zootaxa. 3566: 23=28. Retrieved 26 June 2018.
- ↑ Furniss, Malcolm M (2004). "Observations on an introduced bud scale, Physokermes hemicryphus (Homoptera: Coccidae), infesting Norway spruce in Idaho". Canadian Journal of Forest Research. 34 (6): 1348–1352. Bibcode:2004CaJFR..34.1348F. doi:10.1139/x04-016. ISSN 0045-5067.
- 1 2 García Morales, M; Denno, BD; Miller, DR; Ben-Dov, Y; Hardy, NB (2016). "Physokermes entry on scalenet". ScaleNet: A literature-based model of scale insect biology and systematics. Database. Retrieved 26 May 2018.
- 1 2 Malumphy, C (2009). "Confirmation of the presence of small spruce bud scale, Physokermes hemicryphus (Hemiptera: Coccoidea: Coccidae), in Britain". British Journal of Entomology and Natural History. 22 (1): 15–22.
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