Callophrys spinetorum
Callophrys spinetorum, the thicket hairstreak, is a butterfly of the family Lycaenidae. It was described by William Chapman Hewitson in 1867. It is found in North America from British Columbia through the Rocky Mountains to New Mexico and Mexico and through California to Baja California.[1] The habitat consists of pinyon-juniper forests, mixed woodlands, and coniferous forests.
| Thicket hairstreak | |
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| Species: | C. spinetorum |
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| Callophrys spinetorum (Hewitson, 1867) | |
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The wingspan is 25–32 mm. The upperside is steel blue and the underside reddish brown. The hindwings with a white postmedian band which forms a W shape near the tail. Adults are on wing from May to August in one generation per year. They feed on flower nectar.
The larvae feed on Arceuthobium species.[2]
Subspecies
- Callophrys spinetorum spinetorum (California, Colorado)
- Callophrys spinetorum millerorum Clench, 1981 (New Mexico)
gollark: Did you just randomly decide to calculate that?
gollark: Well, you can, or also "it would have about the same mass as the atmosphere".
gollark: Wikipedia says that spider silk has a diameter of "2.5–4 μm", which I approximated to 3μm for convenience, so a strand has a 1.5μm radius. That means that its cross-sectional area (if we assume this long thing of spider silk is a cylinder) is (1.5e-6)², or ~7e-12. Wikipedia also says its density is about 1.3g/cm³, which is 1300kg/m³, and that the observable universe has a diameter of 93 billion light-years (8.8e26 meters). So multiply the length of the strand (the observable universe's diameter) by the density of spider silk by the cross-sectional area of the strand and you get 8e18 kg, while the atmosphere's mass is about 5e18 kg, so close enough really.
gollark: Okay, so by mass it actually seems roughly correct.
gollark: So, spider silk comes in *very* thin strands and is somewhat denser than water, interesting.
References
- Callophrys spinetorum, at Markku Savela's Lepidoptera and Some Other Life Forms
- Butterflies and Moths of North America
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