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Protohermes grandis

Protohermes grandis

Protohermes grandis

A species of Protohermes

Protohermes grandis is a large, colorful species of dobsonfly occurring in China, Japan, Korea, and Taiwan. “The TDF for P.grandis larvae suggests that their low TPs in nature were caused by incorporation of vascular plant-derived amino acids (with a different N-15 profile from that of algae) and not by an unusually low TDF or by the effects of the satiation/starvation on amino acid metabolism.

General Info About Protohermes grandis
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Attributes of Protohermes grandis
Colors
Brown
Black
Yellow
Habitat
Stone room
Adult Food Sources
Nectar, sap, honeydew, plant juices, and possibly fluids from fruits
Larva Food Source
Small aquatic organisms, tadpoles, small fish, aquatic insects, invertebrates
Biting/stinging
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Chewing mouthparts
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Distribution Area of Protohermes grandis
China, Japan, Korea
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Predators of Adult Protohermes grandis
Birds, bats, rodents, larger insects, spiders
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Interesting Facts About Protohermes grandis
Despite protohermes grandis's intimidating size, it remarkably hovers like a hummingbird while feeding on nectar during nighttime.
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Scientific Classification of Protohermes grandis
Tips for Finding Protohermes grandis
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Youth Habitat of Protohermes grandis
Freshwater Habitats
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Habitat Preferences of Protohermes grandis Through Different Life Stages
The larvae of protohermes grandis are typically found in cool, clear streams or rivers where they inhabit the spaces under stones or logs, feeding on other small aquatic invertebrates. To find them, one would sift through the sediment or turn over stones in these freshwater environments. In contrast, the adults are usually observed near the same aquatic habitats but are more terrestrial, often spotted on the vegetation nearby. Searching for adult protohermes grandis requires scanning leaves and branches, especially during the evening or night, as they are attracted to lights and are most active at that time.
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When is the Best Time to Observe Protohermes grandis
The suitable time to find adult protohermes grandis is during their flight season, which is usually in the late spring and summer months, at night when they are most active. Aquatic larvae of protohermes grandis can be found throughout the year, but the best time is during warmer months when they are more active.
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What is the Best Weather to Observe Protohermes grandis
Adult protohermes grandis prefer to fly in warm, humid weather without strong winds, which makes for the ideal weather for observation or capture. The larvae, being aquatic, are less influenced by weather conditions but are more easily found when water levels are lower and waters are clearer.
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How and Where Can You Find Protohermes grandis at Different Life Stages
Egg Eggs of protohermes grandis are usually laid on vegetation near water bodies. To find them, inspect the leaves and stems of plants just above the water surface in a calm, slow-moving stream or pond.
Larva Larval protohermes grandis are aquatic and predacious. Search for them by gently sweeping a net through the water near the edges of streams or ponds and examining the contents for the sizeable predatory larvae.
Pupal Protohermes grandis pupae are typically found in moist soil or detritus near the water where the larvae developed. Look for them by carefully excavating soil along the bank of a stream or pond.
Adult Capture or observe adult protohermes grandis by using a light trap at night, as they are nocturnal and attracted to light. Alternatively, search for them resting on vegetation near water bodies during the day.
Are Protohermes grandis harmful?
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