[Entomology • 2026] Zhangius rhymbon & Z. lophos • A New nanophyine Genus, Zhangius gen. nov., with descriptions of Two New Species (Coleoptera: Brentidae: Nanophyinae) from China and Thailand

Zhangius rhymbon  

Wang & Alonso-Zarazaga, 2026

 DOI: doi.org/10.3897/zookeys.1273.175356

Abstract

A new nanophyine genus, Zhangius Wang & Alonso-Zarazaga, gen. nov., with two new species Zhangius rhymbon Wang & Alonso-Zarazaga, sp. nov. (type species) and Zhangius lophos Wang & Alonso-Zarazaga, sp. nov., are described. The diagnostic characters of the new genus and species are provided. Keys to the male and female of the species and host data are presented.

Key words: Chiang Mai, identification key, Lyalia, new genus, Shiva, taxonomy, weevils, Yunnan

Zhangius rhymbon Wang & Alonso-Zarazaga, sp. nov.
1. Male; 2. Female; 3. Mating; 4. Host plant, Lagerstroemia tomentosa C. Presl, 1844, leaves and capsule; 5. Crown collecting by long-handle tropical net.

Zhangius Wang & Alonso-Zarazaga, gen. nov. 

 Zhangius rhymbon Wang & Alonso-Zarazaga, sp. nov.  

 Zhangius lophos Wang & Alonso-Zarazaga, sp. nov. 

 Zhiliang Wang, Miguel A. Alonso-Zarazaga. 2026. A New nanophyine Genus, Zhangius gen. nov., with descriptions of Two New Species (Coleoptera, Brentidae, Nanophyinae) from China and Thailand. ZooKeys. 1273: 205-220. DOI: doi.org/10.3897/zookeys.1273.175356 [18 Mar. 2026] 

[Botany • 2025] Rotala myanmarensis (Lythraceae) • A New Species from Myanmar and Taxonomic Reassessment of Rotala occultiflora var. leichhardtii

Rotala myanmarensis Arun Pr. & Sardesai, 

in Prasanth et Sardesai. 2025. 

DOI: doi.org/10.1002/njb.04956

Abstract

A new species of Rotala, viz. R. myanmarensis is described from Myanmar. It is characterized by 4-merous flowers, lanceolate petals, linear-ligulate nectary glands, and ovate seeds. Additionally, R. occultiflora var. leichhardtii is elevated to the rank of species as R. leichhardtii, based on morphological evidence, and is lectotypified. A detailed description, morphological comparative tables, and photographs are provided to aid species identification.

Keywords: amphiphyte, Myanmar, new species, Rotala

Rotala myanmarensis Arun Pr. & Sardesai sp. nov.:
 (a) Holotype, (b) detail of flowering and fruiting twig, (c) flower and fruit, (d) opened flower and fruit.

(a)–(d): all E.C. Wallace 9143 (K004761215).

 

Arun Prasanth and Milind M. Sardesai. 2025. Rotala myanmarensis sp. nov. (Lythraceae) from Myanmar and Taxonomic Reassessment of Rotala occultiflora var. leichhardtii. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.04956 [26 September 2025]

[Botany • 2024] Rotala konkanensis (Lythraceae) • A New Species of macrophyte from low-level ferricretes of Konkan region, Maharashtra, India

 

Rotala konkanensis Arun Pr., Chandore & Sardesai,

in Prasanth, Borude, Chandore et Sardesai, 2024. 

 DOI: doi.org/10.1007/s12228-024-09774-2

Abstract

Morphological studies of Rotala revealed a new species, Rotala konkanensis, from low-level ferricretes of the Konkan region of Maharashtra, India. The new species is described and illustrated here. A taxonomic key and morphological comparison table of new species with closely related taxa, geographical distribution and images are provided.

Keywords: Amphiphyte, India, lateritic plateaus, Rotala

Rotala konkanensis.
A–B. Habit. C. Flower with bract. D. Opened flower. E. Opened flower showing nectary glands. F. Capsule.

(All photos from Arun Prasanth APR0081).

 Rotala konkanensis 

Arun Prasanth, Devidas B. Borude, Arun N. Chandore and Milind M. Sardesai. 2024. Rotala konkanensis (Lythraceae): A New Species of macrophyte from low-level ferricretes of Konkan region, Maharashtra. Brittonia.  76, 41–46. DOI: doi.org/10.1007/s12228-024-09774-2 [14 May 2024]

 x.com/APrasanthr/status/1791098576753549359

[Botany • 2025] Lagerstroemia yangchunensis (Lythraceae) • A New Species from Guangdong, China

Lagerstroemia yangchunensis  B.H.Wu & G.D.Chen,  

 Wu, X.-T. Liu, Bao, Ma, Y. Chen, G.-D. Chen, Hu, G.-F. Liu et Dai, 2025. 

阳春紫薇  ||  DOI: doi.org/10.3897/phytokeys.255.138826 

Abstract

A new species from southern China, Lagerstroemia yangchunensis B.H.Wu & G.D.Chen, sp. nov., is described in the present paper. This species is morphologically similar to L. duperreana Pierre ex Gagnep., but can be distinguished by its coarse bark with vertical fissures, calyx lobes glabrous inside, and flowers with shorter pseudopedicels and petals with longer claws. Detailed morphological characteristics, habitat information, and comparisons with similar species are provided.

Key words: Crape myrtle, Flora, new species, Yangchun

Lagerstroemia yangchunensis
A canopy view during flowering period B stems C flowering branchlet of the inflorescence D flowering branch E fruiting branch F part of the abaxial leaf surface G floral axes H leaves I flower buds J flower K gynoecium L petals M longer stamens N shorter stamens O capsules P seeds.

Photographed by Guo-Di Chen and Bao-Huan Wu.

 Lagerstroemia yangchunensis B.H.Wu & G.D.Chen, sp. nov.

 

Diagnosis. Lagerstroemia yangchunensis is morphologically similar to L. duperreana, but distinguished by its coarse bark with vertical fissures, calyx lobes glabrous inside, and flowers with shorter pseudopedicels and petals with longer claws.

 Bao-Huan Wu, Xiu-Ting Liu, Zi-Yu Bao, Xiao-Yan Ma, Ying Chen, Guo-Di Chen, Xing Hu, Guo-Feng Liu and Se-Ping Dai. 2025. Lagerstroemia yangchunensis (Lythraceae), A New Species from Guangdong, China. PhytoKeys. 255: 35-40. DOI: doi.org/10.3897/phytokeys.255.138826 

[Botany • 2023] Lagerstroemia stenophylla (Lythraceae) • A New Species from Hubei, China

Lagerstroemia stenophylla  B.H.Wu, X.Hu & S.P.Dai, 

in Wu, Hu, Tu, Wang et Dai, 2023. 

狭叶紫薇   ||  DOI: 10.3897/phytokeys.234.111861

 

Abstract

Lagerstroemia stenophylla, a new species from southeastern Shaanxi Province and northwestern Hubei Province of China is described. Morphologically, L. stenophylla resembles L. subcostata, but it differs in having 4-angular, subalate branchlets, elliptic-lanceolate, or narrowly elliptic leaves, and relatively larger flowers.

Key words: China, crape myrtle, Flora, new species

 Lagerstroemia stenophylla
A habitat B flowering individuals C stems D flowering branch E fruiting branch F leaves G flower buds H flowers I petals J capsules and seeds.

 Lagerstroemia stenophylla B.H.Wu, X.Hu & S.P.Dai, sp. nov.

Diagnosis: Lagerstroemia stenophylla is morphologically similar to L. subcostata Koehne, but distinguished by its branchlets 4-angular, sometimes subalate, leaves elliptic-lanceolate, narrowly elliptic, leaf apex acute, leaf base cuneate, flowers 2.5–3 cm in diameter.

Etymology: The epithet of the new species refers to its narrow leaf blade.

Vernacular name: The Chinese name of the new species is here given as 狭叶紫薇 (xiá yè zǐ wēi).

Bao-Huan Wu, Xing Hu, Wen-Hui Tu, Wei Wang and Se-Ping Dai. 2023. Lagerstroemia stenophylla (Lythraceae), A New Species from China.  PhytoKeys. 234: 127-133. DOI: 10.3897/phytokeys.234.111861

[Botany • 2022] Rotala biglandulosa (Lythraceae) • A New Species of Macrophyte from High-level Ferricretes of the northern Western Ghats, India

 

Rotala biglandulosa Arun Pr. & Sardesai, 

in Prasanth & Sardesai, 2022. 

DOI: 10.1007/s12224-022-09418-x 

twitter.com/APrasanthR

Abstract

A new species, Rotala biglandulosa, is described here from the northern Western Ghats, Maharashtra, India. It is closely similar to R. juniperina but can be distinguished morphologically based on having stamens arising from base of the floral tube, the presence of three bipartite nectary gland, and capsules exceeding the floral tube. A phylogenetic study based on nrITS and psbA–trnH loci also confirmed the status of R. biglandulosa as a distinct species.

Keywords: Lythraceae, New species, Phylogeny, Rotala, Western Ghats

Rotala biglandulosa Arun Pr. & Sardesai, sp. nov. 

 Etymology The specific epithet ‘biglandulosa’ denotes bi-partite floral nectary glands.

Arun Prasanth and Milind M. Sardesai. 2022. Rotala biglandulosa (Lythraceae) – A New Species of Macrophyte from High-level Ferricretes of the northern Western Ghats, India. Folia Geobotanica. DOI: 10.1007/s12224-022-09418-x

  twitter.com/APrasanthR/status/1570977307166388227

[Botany • 2017] Lagerstroemia ruffordii • A New Species (Lythraceae) from Vietnam and Cambodia

Lagerstroemia ruffordii   T. T. Pham & Tagane

in Pham, Tagane, Chhang, et al, 2017.

 DOI 10.18942/apg.201705 

Abstract

A new species of Lagerstroemia ruffordii T. T. Pham & Tagane (Lythraceae) from Vietnam and Cambodia is described and illustrated. It is morphologically similar to L. petiolaris in having petioles more than 0.9 cm long, but distinguished mainly by its narrower leaves, larger flowers and distinctly 6-ridged calyx tube. DNA barcodes of the two chloroplast regions of rbcL and matK and one ITS of nuclear ribosomal DNA are also provided.

Keywords: DNA barcoding, Indochina, Lagerstroemia, Lythraceae, new species

Fig. 2. Lagerstroemia ruffordii T. T. Pham & Tagane from Vietnam (A–F) and Cambodia (G–I).

A, Habit; B, trunk; C, Leafy twig (adaxial side); D, leafy twig (abaxial side); E, flower; F. fruits; G. fruiting branch: H, abaxial leaf surface; I, fruits.

 [Photographs by Pham T. T. on 29 March 2016 for Pham T. T. & Nguyen T. T. 16032901 (A–F) and by S. Tagane on 1 November 2016 for Tagane et al. 6971 (G–I)].

Vernacular name in Cambodia. Kval Yang (in Sen Monorom), Sralao Chu (in Khmer).

 Etymology. The specific epithet ‘rufford’ is derived from the Rufford Small Grants Foundation that supported this research.

Trang Thanh Pham, Shuichiro Tagane, Phourin Chhang, Tetsukazu Yahara, Phetlasy Souradeth and Thu Thi Nguyen. 2017. Lagerstroemia ruffordii (Lythraceae), A New Species from Vietnam and Cambodia. Acta Phytotaxonomica et Geobotany. 68(3); 175-180. DOI 10.18942/apg.201705