Beauveria araneola W.H. Chen, Y.F. Han, Z.Q. Liang & D.C. Jin, 2017

Chen, Wan-Hao, Han, Yan-Feng, Liang, Zong-Qi & Abstract, Dao-Chao Jin, 2017, A new araneogenous fungus in the genus Beauveria from Guizhou, China, Phytotaxa 302 (1), pp. 57-64 : 59-60

Beauveria araneola W.H. Chen, Y.F. Han, Z.Q. Liang & D.C. Jin , sp. nov. ( Figure 2 )

MycoBank No.: MB815354

Type:— CHINA. Guizhou Province: Huaxi, N 26°42′, E 106°67′, 17 March 2015, Shuai Li (holotype GZAC 150317, ex-type culture GZU 0317bea and dried ex-type culture GZU 0317bea.1).

Colony growth and appearance similar on full strength Sabouraud’s dextrose and potato dextrose agars, 40–46 mm in diam. After 14 days at 25 °C, colony non-odorous, white to yellowish white, with aerial mycelium white, dense, velutinous, powdery while sporulating. Reverse light aurantium. Vegetative hyphae septate, branched, hyaline, smooth walled, 1.1–3.2 μm wide. Conidiogenous cells solitary or occurring in lateral clusters, with base subcylindrical or occasionally subspherical, 3.2–5.9 (–10.8) × 0.9–1.1(–1.3) μm, and sympodially branced neck tapering into a long slender denticulate rachis, geniculate or irregularly bent, 6.4–16.2 × 0.5–1.1 μm. Conidia 1.3–4.5 × 0.9–2.5 μm, Q = 1.9–3.2 (Lm = 2.7, Wm =1.4, Qm =1.6), ellipsoidal to globose, hyaline, aseptate, walls smooth and thin.

Etymology:— araneola , referring to its host spider.

Distribution:— Guizhou Province, China.

Material examined:—Dried specimen GZAC 150317 (holotype) and its isolate GZU 0317bea have been deposited at Guizhou University ( GZAC).

Notes: The new species is similar to four other species in the genus Beauveria ( Table 1), Beauveria caledoninca Bissett & Widden , Beauveria lii Sheng L. Zhang & B. Huang , Beauveria sinensis Ming J. Chen, Z.Z. Li & B. Huang and Beauveria vermiconia de Hoog & V. Rao. However , Beauveria araneola can be easily distinguished from these species by its long slender denticulate rachis, subcylindrical conidiogenous cells, and ellipsoidal to globose conidia.

Figures

FIGURE 2. Beauveria araneola sp. nov. a. Infected spider; b. The colony on PDA after 14d at 25°C; c. Conidia; d. e. Conidiogenous cells solitary and usually in dense lateral clusters. Bar: b = 10 mm; c, d, e = 10 μm.