Polycephalomyces formosus

Ciri dan struktur

Growing on the stroma of Ophiocordyceps sp. on an Elateroidea larva. Stroma single, arising from the body end of the host larva, unbranched. The larva reddish-brown, cylindrical, 21 × 1.3–1.6 mm, intersegmental membranes conspicuous. Stipe of the stroma shiny black, stiff, band-like, but twisted and deeply wrinkled (dry specimen), more than 20 mm long and 1.0–1.3 mm thick, surface smooth (the fertile head was missing). Synnemata solitary or caespitose, arising from the intersegmental membranes of the larva and the surface of the stroma, mostly unbranched, generally straight, capitate, 1–3.5 mm long and 50–600 µm thick. Stipe basally broad and compressed, then gradually cylindrical upwards, white, greyish-white to yellowish-brown, surface smooth. Fertile head (including spore mass) abruptly expanded, ellipsoidal, 100–300 × 80–250 µm, located at the top of every synnema and distinctly separated from the stipe. Spore mass covers the surface of every fertile head, 15–25 µm thick, yellowish-brown and composed of hymenia. Phialides of two types, A-phialides produced on fertile heads, B-phialides arising laterally along the entire stipe. A-phialides 3–5 in terminal whorl on basal conidiophores, cylindrical to narrowly conical, straight or curved, non-uniform, 10–20 (x – = 15.1, n = 30) µm long and 1.5–2 µm (x – = 1.7, n = 30) wide, basally and terminally narrow, neck narrow to 0.5 µm, collarettes and periclinal thickening not visible; A-conidia obovate to obpyriform, smooth-walled, hyaline, 2.1–3.2 (x – = 2.6, n = 30) µm long and 1.5–2.2 (x – = 1.8, n = 30) µm wide. B-phialides single or in terminal whorls of 2–3 on basal conidiophores, straight, symmetrical or asymmetrical, hyaline, generally cylindrical, 10–25 (x – = 17, n = 30) µm long, 2–3.5 (x – = 2.8, n = 30) µm thick at the base, 0.5–0.8 (x – = 0.65, n =30) µm thick at the end, collarettes and periclinal thickening not visible; B-conidia fusiform, hyaline, smooth-walled, 3.2–6.0 (x – = 4.6, n = 30) µm long and 1–1.8 (x – = 1.4, n = 30) µm wide.

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

Pengukuran mengikuti objek, spesimen atau kultur, dan metode yang disebutkan sumber. Baca uraian asli untuk konteks lengkap.

Habitat dan peran ekologis

On the stroma of Ophiocordyceps sp. on an Elateroidea larva on the ground in a humid bamboo (Chimonobambusa quadrangularis (Franceschi) Makino) forest in Guizhou karst regions. The larva might live in soil or decayed wood at first, but was then infected by Ophiocordyceps sp. and produced a sexual stroma. Following heavy rainfall, the host, together with the stroma of Ophiocordyceps sp., was washed away and exposed on the ground and at last, was parasitised by Polycephalomyces formosus. The fertile head of the stroma might have been lost during the floods.

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

Habitat atau konteks temuan

hutan

Substrat

tanah

Peran atau konteks

Belum dikategorikan pada rilis ini.

Reproduksi

Growing on the stroma of Ophiocordyceps sp. on an Elateroidea larva. Stroma single, arising from the body end of the host larva, unbranched. The larva reddish-brown, cylindrical, 21 × 1.3–1.6 mm, intersegmental membranes conspicuous. Stipe of the stroma shiny black, stiff, band-like, but twisted and deeply wrinkled (dry specimen), more than 20 mm long and 1.0–1.3 mm thick, surface smooth (the fertile head was missing). Synnemata solitary or caespitose, arising from the intersegmental membranes of the larva and the surface of the stroma, mostly unbranched, generally straight, capitate, 1–3.5 mm long and 50–600 µm thick. Stipe basally broad and compressed, then gradually cylindrical upwards, white, greyish-white to yellowish-brown, surface smooth.

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

Catatan identitas dan cakupan

• Nama diterima mengikuti Catalogue of Life Base2026-09-11; uraian mempertahankan konsep dan nama sumber aslinya.
• Preserve original treatment localities, hosts and substrate scope. Materials examined describe documented specimens, not the full global range.
• Impor dan terjemahan otomatis belum diperiksa editorial per profil. Struktur reproduktif yang disebutkan tidak membuktikan seluruh siklus hidup diketahui.
• Pengukuran pada uraian mengikuti spesimen, kultur, dan metode sumber; angka tidak diperluas ke semua populasi.

Melihat dengan konteks

Dokumentasi Polycephalomyces formosus menurut asosiasi foto pada record takson iNaturalist. Kredit: Atsushi Nakajima. Identitas mengikuti sumber; bukan penentuan spesimen independen.

Jenis

Fotografi

Kredit

(c) Atsushi Nakajima, some rights reserved (CC BY), uploaded by Atsushi Nakajima

Lisensi

CC BY 4.0

Sumber media

Buka entri sumber

Gambar menunjukkan objek menurut identifikasi sumber, bukan verifikasi independen spesimen oleh Fungi. Tidak ada skala baru yang ditambahkan.

Dokumentasi tambahan

Sumber profil

1. [1] Novel taxa and species diversity of Cordyceps sensu lato (Hypocreales, Ascomycota) developing on wireworms (Elateroidea and Tenebrionoidea, Coleoptera) — Polycephalomyces formosusBagian sumber: PMC8021543_section_22
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY 4.0 · Zha LS, Kryukov VY, Ding JH, Jeewon R, Chomnunti P.
2. [2] Catalogue of Life Base2026-09-11 — Polycephalomyces formosusBagian sumber: ColDP NameUsage.tsv ID 4L3TC; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Polycephalomyces formosusBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Media sumber: CC BY 4.0 · (c) Atsushi Nakajima, some rights reserved (CC BY), uploaded by Atsushi Nakajima
4. [4] Dokumentasi visual — Polycephalomyces formosusBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Teks sumber: CC BY 4.0 · Ling-Sheng Zha, Vadim Yu Kryukov, Jian-Hua Ding, Rajesh Jeewon, Putarak Chomnunti