Lecanicillium cauligalbarum X. Zou, J.R. Zhi & Y.M. Zhou

Zhou, Ye-Ming, Zhi, Jun-Rui, Ye, Mao, Zhang, Zhi-Yuan, Yue, Wen-Bo & Zou, Xiao, 2018, Lecanicilliumcauligalbarum sp. nov. (Cordycipitaceae, Hypocreales), a novel fungus isolated from a stemborer in the Yao Ren National Forest Mountain Park, Guizhou, MycoKeys 43, pp. 59-74 : 64-65

publication ID

https://dx.doi.org/10.3897/mycokeys.43.30203

persistent identifier

https://treatment.plazi.org/id/2802F827-AB6B-596E-1D72-544CB3D87FAF

treatment provided by

MycoKeys by Pensoft

scientific name

Lecanicillium cauligalbarum X. Zou, J.R. Zhi & Y.M. Zhou
status

sp. nov.

Lecanicillium cauligalbarum X. Zou, J.R. Zhi & Y.M. Zhou sp. nov. Figure 3

Diagnosis.

Characterised by phialides gradually tapering towards the apex, solitary or 2-3 whorls, 9-14.4 × 1.4-1.8 µm. Conidia cylindric, aseptate, 3.6-6.3 × 0.9-1.8 μm.

Type.

CHINA, Guizhou Province, Sandu county (107°53', 107°58'E; 24°54', 25°59'N, approximately 560-1365 m above sea level), September 2015, Yeming Zhou & Xiao Zou. Sequences from isolated strains (GZUIFRZHJ01 and GZUIFRZHJ02) have been deposited in GenBank (accession numbers to be provided).

Description.

Colony on PDA 15 mm in diameter after 7 days, 33 mm in diameter after 14 days at 25 °C, colony circular, white, cottony, umbonate, with radiating surface texture from above, with clear radial crack and primrose-yellow from reverse. Mycelium 0.9-1.8 μm wide, hyaline, smooth, septated, branched. Conidiophores usually arising from aerial hyphae, sporulate abundant. Phialides gradually tapering towards the apex, solitary or 2-3 whorls, 9-14.4 × 1.4-1.8 µm. Conidia cylindric, aseptate, 3.6-6.3 × 0.9-1.8 μm. In culture, both phialides and conidia are of similar general shape and size to those found on the host stemborer.

Host.

Stemborer ( Lepidoptera ) hidden amongst wooden sticks.

Habitat and distribution.

Hidden amongst pieces of wood in humid forests of southwest China.

Etymology.

The epithet ' cauligalbarum ' refers to the host (stemborer).

Teleomorph.

Not known.

Remarks.

With regard to phylogenetic relationships, L. cauligalbarum is closely related to the L. fungicola clade and L. fusisporum . The two strains (GZUIFRZHJ01 and GZUIFRZHJ02) formed a distinct lineage. All Lecanicillium species were included in the phylogenetic analysis except for L. evansii for which sequence data could not be located in public databases, although Zare and Gams (2001) published ITS sequences. The morphological features of L. evansii include brownish-cream to brown reverse, phialides solitary or up to 3-4 per node and two types of the conidia, slightly falcate with a pointed end macroconidia 4.5-7.5 × 0.8-1.2 µm and slightly curved microconidia 2.0-3.0 × 0.8-1.2 µm ( Zare and Gams 2001). L. evansii is distinct from L. cauligalbarum , which has conidia of 3.6-6.3 × 0.9-1.8 μm and 9-14.4 × 1.4-1.8 µm phialides.

In morphology L. cauligalbarum is is similar to L. aphanocladii , L. attenuatum and L. nodulosum with regard to the short conidiogenous cell (Table 3). However, L. cauligalbarum is distinguished by the pattern of spore production and the frequency of the wheel structure.