Lachesilla penta
This record describes Lachesilla penta (species). Recorded family: Lachesillidae. Recorded order: Psocodea.
Identification and Appearance
Subgenital plate has narrow terminally pigmented arms that curve inward and a flat truncated posterior margin like that in Fig. 202 in ; sternum 9 w/flattened oval pigmented area surrounding the spermapore [Fig. 642 ]; females of L. penta and L. tropica are very similar in appearance and both occur on branches with persistent dead leaves, but can be distinguished by the subgenital plate. (Comment by Diane Young)
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Psocodea (Barklice, Booklice, and Parasitic Lice)
- Suborder
- Psocomorpha
- Family
- Lachesillidae (Fateful Barklice)
- Genus
- Lachesilla
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Additional species information
Species notes from the sources
Etymology: Lachesilla penta Sommerman 1946
About Barklice, Booklice, and Parasitic Lice: the wider group
Order-level background for Psocodea, the group containing Lachesilla penta. Species-specific details appear above.
Group overview
Psocodea includes ~11,000 described species of booklice, barklice, and parasitic lice. Booklice (Psocoptera) are among the most common household insects, thriving in humid environments where they feed on mold and fungi.
Ecological role of the group
Barklice are important decomposers that feed on algae, lichens, and fungi on tree bark. They help recycle nutrients in forest ecosystems. Parasitic lice have co-evolved with their hosts for millions of years, providing insights into host evolutionary history.
Economic and practical significance of the group
Head lice (Pediculus humanus capitis) affect an estimated 6-12 million children aged 3-11 in the U.S. annually (CDC). The U.S. lice treatment market is valued at over $1 billion per year.
Recorded sources for this group: CDC, dermatology research, entomology textbooks. Imported estimates may describe particular regions or reporting periods.
Photos of Lachesilla penta (5)
Photo credits: Contributed by Maury J. Heiman; Additional contributions by Beatriz Moisset , v belov