Pamphiliidae
Guides
Acantholyda
web-spinning sawflies, pine sawflies
Acantholyda is a genus of web-spinning sawflies in the family Pamphiliidae, distributed across Europe, Asia, and North America. Species are associated with coniferous hosts, particularly Pinus and Cedrus. Several species are significant forest pests capable of causing extensive defoliation during outbreaks. Larvae construct silken webs and may enter extended diapause in soil.
Acantholyda angulata
Acantholyda angulata is a species of sawfly in the family Pamphiliidae. The genus Acantholyda belongs to a group of primitive sawflies characterized by distinctive morphological features. Members of this family are typically associated with coniferous hosts, though specific host records for A. angulata remain limited. The species is known from very few observations, reflecting either genuine rarity or undercollection.
Acantholyda atripes
Acantholyda atripes is a species of web-spinning sawfly in the family Pamphiliidae. Members of this genus are known for their distinctive larval habit of constructing silken webs on coniferous foliage. The species name 'atripes' refers to dark-colored legs. Like other pamphiliids, it is associated with pine hosts.
Acantholyda bicolorata
Acantholyda bicolorata is a species of sawfly in the family Pamphiliidae. The genus Acantholyda is known for species that are commonly referred to as web-spinning sawflies or pine web-spinning sawflies, with larvae that construct silken webs on host plants. However, specific information regarding A. bicolorata itself is extremely limited in available sources. The species name 'bicolorata' suggests a two-colored appearance, but detailed biological or ecological data is not readily documented.
Acantholyda circumcincta
Acantholyda circumcincta is a species of sawfly in the family Pamphiliidae, a group commonly known as web-spinning sawflies. The genus Acantholyda contains species whose larvae construct silken webs on host plants. Adults are generally small to medium-sized sawflies with distinctive morphological features. Larval stages are associated with coniferous trees, where they feed gregariously within protective webs.
Acantholyda floridana
Acantholyda floridana is a species of sawfly in the family Pamphiliidae. The genus Acantholyda comprises web-spinning sawflies whose larvae construct silken webs on host plants. This species is endemic to Florida, with records from the northern and central portions of the peninsula. Adults are active in spring and early summer. Larval biology and specific host associations for this species remain poorly documented.
Acantholyda verticalis
Acantholyda verticalis is a species of sawfly in the family Pamphiliidae. It belongs to a genus of web-spinning sawflies whose larvae construct silken webs on host plants. The species has been documented in several Canadian provinces including Alberta, British Columbia, and New Brunswick. Like other pamphiliids, it is likely associated with coniferous hosts, though specific details for this species remain limited in available sources.
Cephalcia
spruce web-spinning sawflies
Cephalcia is a genus of web-spinning sawflies in the family Pamphiliidae, established by Panzer in 1803. Species are distributed across Europe, North America, and Asia. Larvae feed primarily on conifer needles, particularly spruce (Picea) and larch (Larix), and construct silk webs for protection while feeding. Several species are significant forest pests capable of causing defoliation during population outbreaks. The genus exhibits complex life cycles with variable voltinism, often involving extended diapause in soil-dwelling prepupal stages.
Cephalcia fulviceps
Cephalcia fulviceps is a species of sawfly in the family Pamphiliidae, a group of web-spinning sawflies. Members of this genus are associated with coniferous trees. The species is poorly documented in scientific literature.
Cephalcia semidea
Cephalcia semidea is a species of web-spinning sawfly in the family Pamphiliidae. Members of this genus are known for constructing silk webs on conifers, within which larvae feed gregariously. The species is rarely documented, with limited observational records available.
Cephalciinae
Cephalciinae is a subfamily of sawflies within the family Pamphiliidae. Members are characterized by their association with conifers, particularly as larvae that feed on pine needles. The subfamily includes the genus Cephalcia, which contains species known as pine sawflies. Adults are generally robust with broad heads relative to body size.
Neurotoma
Neurotoma is a genus of sawflies in the family Pamphiliidae, established by Konow in 1897. The genus contains approximately twelve described species distributed across Europe, Southeastern Asia, and North America. At least one Nearctic species, N. crataegi, has been documented feeding on hawthorn (Crataegus sp.) as larvae. The genus belongs to the suborder Symphyta, representing one of the more species-rich genera within the relatively small family Pamphiliidae.
Onycholyda
Onycholyda is a genus of sawflies in the family Pamphiliidae, established by Takeuchi in 1938. Species occur in Europe, North America, and China. Larvae feed on Rubus species (Rosaceae), with documented associations including Rubus inopertus and R. hirsutus. The genus includes at least six described species, with some larval stages and male specimens only recently described.
Onycholyda quebecensis
Onycholyda quebecensis is a species of sawfly in the family Pamphiliidae, order Hymenoptera. As a member of this family, it is a non-stinging relative of wasps and bees with larvae that develop on plants. The species epithet 'quebecensis' indicates a geographic connection to Quebec, Canada. Very few observations of this species exist in public databases.
Onycholyda rufofasciata
Onycholyda rufofasciata is a species of web-spinning sawfly in the family Pamphiliidae, first described by Norton in 1869. The species is recorded from multiple Canadian provinces including Alberta, Manitoba, New Brunswick, and Newfoundland. As a member of Pamphiliidae, it likely produces silk webbing on host plants during larval development, though specific biological details remain poorly documented. The genus Onycholyda contains approximately 20 species distributed primarily in the Holarctic region.
Pamphilius
leaf-rolling sawflies
Pamphilius is a genus of approximately 115 species of leaf-rolling sawflies in the family Pamphiliidae. Adults are typically 10–15 mm in length with black bodies, yellowish spots on the head, yellow legs, and transparent wings. Larvae are solitary or colonial leaf-rollers that feed on various deciduous trees and shrubs. The genus has a Holarctic distribution, occurring in North America and Eurasia.
Pamphilius middlekauffi
Pamphilius middlekauffi is a species of sawfly in the family Pamphiliidae, suborder Symphyta. It is one of 30 sawfly species newly recorded in Arkansas during field work by Dr. Michael Skvarla, representing a significant range extension from previously known localities. The species belongs to a group of plant-feeding wasps whose larvae develop on plant material.
Pamphilius murrayi
Pamphilius murrayi is a species of web-spinning sawfly in the family Pamphiliidae, suborder Symphyta. Like other members of its genus, it is a plant-feeding wasp with larvae that develop on host plants. The species belongs to a group of sawflies characterized by a serrated ovipositor used to insert eggs into plant tissue. Records of this species are sparse, with limited observational data available.
Pamphilius ochreipes
Viburnum Web-spinning Sawfly
Pamphilius ochreipes is a web-spinning sawfly in the family Pamphiliidae. Larvae feed within leaf rolls on cultivated Viburnum opulus, constructing silk webbing for protection. The species has a univoltine life cycle, overwintering as larvae in soil and emerging as adults in late spring. Adults have been collected across North America, though detailed biological studies are limited to southern Ontario populations.
Pamphilius pallimaculus
Pamphilius pallimaculus is a species of web-spinning sawfly in the family Pamphiliidae. It is one of 30 sawfly species newly documented in Arkansas through field research by Dr. Michael Skvarla, representing a significant range extension from previously known localities. The species belongs to a group of plant-feeding wasps whose larvae spin protective webs on host plants.
Pamphilius semicinctus
Pamphilius semicinctus is a species of web-spinning sawfly in the family Pamphiliidae, suborder Symphyta. As with other members of this genus, the larvae construct silk webs on host plants for protection while feeding. The species belongs to a group of plant-feeding wasps that are economically insignificant and harmless to humans. Specific details regarding its distribution and biology remain poorly documented in available literature.