Pestalotiopsis coffeae-arabicae Y. Song, K. Geng, K.D. Hyde & Yong Wang bis, sp. nov. (Fig. 2) MycoBank

MB 804967

Differs from related Pestalotiopsis species mainly by its smaller conidia and shorter apical appendages.

Type: — CHINA. Hainan Province: Xinglong County, Tropical Botanical Garden, living leaves of Coffea arabica, 8 March 2012, K . Geng (HGUP4019, holotype!) .

Associated with red-brown leaf spots on living leaves of Coffea arabica . Conidiophores usually indistinct. Conidiogenous cells discrete, ampulliform to lageniform, smooth, thin-walled, hyaline, with 2–3 proliferations. Conidia fusoid to ellipsoid, straight to slightly curved, 4-septate, 16–20 × 5–7 µm (n=30, x =18.6 × 6.4 µm); basal cell short, conic to obconic, hyaline, thin-walled and verruculose; three median cells 11.8–13.5 µm long (n=30, x = 12.8 µm), dark brown, septa and periclinal walls darker than the rest of the cell, versicolorous; second cell from base pale brown, 3.5–4.5 µm (n=30, x = 4.1 µm); third cell darker brown, 3.5– 5µm (n=30, x = 4.1µm); fourth cell darker, 3.7–4.5 µm (n=30, x = 4 µm); apical cell 2.4–3.1 µm (n=30, x = 2.7µm), hyaline, obconic to subcylindrical, with 2–4 appendages (mostly 3); apical appendages 11–16 µm long (n=30, x = 13.5 µm), tubular, arising from the apex of the apical cell; basal appendage, 3–5 µm long (n=30, x = 3.5 µm), filiform. Colonies on PDA reaching 7 cm diam. after 8 days at 25° C, with undulate edge, whitish, with aerial mycelium on surface; fruiting bodies black, gregarious; reverse of culture pale luteous.

Habitat/ Distribution: —Known to inhabit Coffea arabica, Hainan Province, China.

Etymology: —In reference to the host, Coffea arabica, from which this fungus was first isolated.

Other material examined: — CHINA. Hainan Province: Xinglong County, Tropical Botanical Garden, living leaves of Coffea arabica, 8 March 2012, K . Geng (HGUP4015!) .