Tiania lithocarpicola Ning Jiang, 2025

Jiang, Ning, Xue, Han & Li, Yong, 2025, Novel genus and species of Diaporthostomataceae (Diaporthales) in China, IMA Fungus 16, pp. e 145422-e 145422 : e145422-

Tiania lithocarpicola Ning Jiang sp. nov.

Fig. 5

Etymology.

Named after the host genus Lithocarpus and “ - cola ” = “ inhabiting ”.

Diagnosis.

Distinct from its sister species T. chinensis by shorter conidia.

Typus.

CHINA • Hainan Province, Changjiang Li Autonomous County, Bawangling National Forest Park, on diseased leaves of Lithocarpus elaeagnifolius , 12 November 2018, Yong Li (holotype CAF 800042 ; ex-holotype culture CFCC 55331 ) .

Description.

Conidiomata in culture sporodochial, aggregated, erumpent, pulvinate, light brown, 150–650 μm diam., exuding light brown conidial masses. Conidiophores hyaline, smooth, cylindrical, branched. Conidiogenous cells hyaline, smooth, cylindrical to ampulliform, attenuate towards the apex, phialidic, 6.5–22.5 × 1.5–2.5 μm. Conidia aseptate, hyaline, smooth, multi-guttulate, fusoid to ellipsoid, straight or slightly curved, (4.5 –) 5–6.5 (– 7.5) × 2–2.5 (– 3) μm (n = 50), L / W = 1.9–3.5.

Culture characteristics.

Colonies on PDA flat, spreading, with moderate flocculent aerial mycelium and even margin, forming concentric rings, white to straw, reaching 90 mm diam after 2 wk at 25 ° C. Colonies on MEA flat, spreading, with moderate flocculent aerial mycelium and undulating margin, forming salmon irregular center area and smoke grey to ochreous outer area, reaching 70 mm diam after 2 wk at 25 ° C. Colonies on SNA flat, dense, white, slowly growing.

Additional material examined.

CHINA • Hainan Province, Changjiang Li Autonomous County, Bawangling National Forest Park, from leaf spots of Lithocarpus elaeagnifolius , 12 November 2018, Yong Li (living culture CFCC 55882 ) .

Distribution.

China, Hainan Province.

Ecology.

Associated with leaf spot disease with Lithocarpus elaeagnifolius .

Notes.

Tiania lithocarpicola is phylogenetically closely related to T. chinensis but can be distinguished by its shorter conidia (5–6.5 × 2–2.5 μm in T. lithocarpicola vs. 8–9 × 2.5–3 μm in T. chinensis ).

Figures

Figure 5. Tiania lithocarpicola sp. nov. from Lithocarpus elaeagnifolius (CAF 800042). A Colonies on PDA, MEA and SNA after 10 d at 25 ° C; B conidiomata formed on PDA; C conidiogenous cells; D – G conidia. Scale bars: 300 μm (B); 10 μm (C – G).