Diaporthe guangzhouensis Ning Jiang & Y. Q. Zhu 2024, sp. nov.

Diaporthe guangzhouensis Ning Jiang & Y. Q. Zhu sp. nov. Fig. 4 Etymology. Named after the collection site of the type specimen, Guangzhou City. Holotype. China • Guangdong Province, Guangzhou City, Longdong straight street, 23 ° 11 ' 41.02 " N, 113 ° 22 ' 8.33 " E, 46 m asl, on diseased leaves of Bauhinia variegata, 8 Aug 2022, Yong Li, Chengbin Wang & Yaquan Zhu, (holotype: CAF 800095; ex-type culture: CFCC 58151). Description. Conidiomata pycnidial, scattered to aggregated, black, erumpent, raising above surface of culture medium, subglobose, 150–450 µm diam, exuding white or yellowish creamy conidial droplets from central ostioles after 30 days at 25 ° C. Conidiophores 12.5–24.5 × 1–2.5 μm, cylindrical, hyaline, unbranched, straight to sinuous. Conidiogenous cells densely aggregated, phiailidic, unbranched, straight or slightly curved, 5.5–10 × 2.0–7.5 μm. Beta conidia filiform, hyaline, straight or slightly curved, aseptate, 17.0–29.5 × 1.0–2.0 μm. Alpha conidia and gamma conidia not observed. Teleomorph not observed. Culture characteristics. Colonies covering entire plate after 2 weeks. On PDA with profuse aerial mycelium, white surface, reverse amber. On MEA with fluffy aerial mycelium, dirty white surface, reverse ochreous. On SNA white sparse aerial mycelium, surface and reverse white. Additional material examined. China • Guangdong Province, Guangzhou City, Longdong straight street, 23 ° 11 ' 41.02 " N, 113 ° 22 ' 8.33 " E, 46 m asl, on diseased leaves of Bauhinia variegata, 8 Aug 2022, Yong Li, Chengbin Wang & Yaquan Zhu, living culture GZ 13 E. Notes. Diaporthe guangzhouensis from the present study is phylogenetically close to D. tulliensis (Fig. 2). Diaporthe guangzhouensis differs from D. tulliensis in nucleotide sequence data (5 / 526 in ITS, 9 / 347 in tef 1, 13 / 711 in tub 2) (Crous et al. 2015). In addition, host and distribution data are vital for species identification (D. guangzhouensis inhabiting Bauhinia variegata in China vs. D. tulliensis inhabiting Theobroma cacao in Australia) (Crous et al. 2015).