[Entomology • 2026] Teulisna breveprocessa & T. nicobara • Two New Species and A New Species Record of Genus Teulisna Walker (Lepidoptera: Erebidae: Arctiinae) from India

[1-2]. Teulisna breveprocessa sp. nov., Devikulam, Kerala, India;
[3] T. ruma (Swinhoe. 1889), Nilgiri, Tamil Nadu, India; [4] T. basigera (Walker [1865]), Tamil Nadu, India (NZCZSI); [5] T. inducta (Walker 1864), Naduvattam, Tamil Nadu, India;
[6-8]. T. nicobara sp. nov., Great Nicobar Islands, Govind Nagar, India.

S. Singh, N. Singh & Joshi, 2026 

DOI: doi.org/10.1016/j.japb.2026.03.007

Abstract

Two new species of the genus Teulisna Walker, 1862 (Lepidoptera: Erebidae: Lithosiina) are described from India: T. (Cossa) breveprocessa sp. nov. (from the Western Ghats of Kerala) and T. (Tegulata) nicobara sp. nov. (from the Great Nicobar Island). The former is diagnosed with its close congeners in the subgenus Cossa Walker: T. (C.) ruma (Swinhoe, [1890] 1889), T. (C.) munnara Volynkin, 2023, T. (C.) basigera (Walker, [1865]) and T. (C.) inducta (Walker, [1865]), whereas the latter is diagnosed with T. (Tegulata) chiloides chiloides (Walker 1862). T. (Poikilothosia) sayinyingpo Huang, Volynkin & Černý, 2025, from Arunachal Pradesh, which is a new record to India.

Keywords: Kerala, Lithosiina, Nicobar Islands, NorthEast Himalaya, Tegulata, Western Ghats

Habitus of Teulisna spp.
1. Teulisna breveprocessa sp. nov., m# HT, Devikulam, Kerala, India (NZCZSI); 2. T. breveprocessa sp. nov., m# PT, Devikulam, Kerala, India (NZCZSI);
3. T. ruma (Swinhoe. 1889) m# Avalanchi, Nilgiri, Tamil Nadu, India (NZCZSI); 4. T. basigera (Walker [1865]) m# Pykara, Tamil Nadu, India (NZCZSI);
5. T. inducta (Walker 1864), m#, Naduvattam, Tamil Nadu, India (NZCZSI);
6. T. nicobara sp. nov., m# HT Great Nicobar Islands, Govind Nagar, India (NZCZSI); 7. T. nicobara sp. nov., m# PT Great Nicobar Islands, Govind Nagar, India (NZCZSI); 8. T. nicobara sp. nov., f# PT, Great Nicobar Islands, Govind Nagar, India (NZCZSI);
9. T. sayinyingpo Huang, Volynkin & Černý, 2025 m#, Sela, Arunachal Pradesh, India (NZCZSI); 10. T. sayinyingpo Huang, Volynkin & Černý, 2025 f#, Sela, Arunachal Pradesh, India (NZCZSI).

Teulisna (Cossa) breveprocessa sp. nov. (from the Western Ghats of Kerala) 

T. (Tegulata) nicobara sp. nov. (from the Great Nicobar Island).

Santosh Singh, Navneet Singh and Rahul Joshi. 2026. Two New Species and A New Species Record of Genus Teulisna Walker (Lepidoptera: Erebidae: Arctiinae) from India. Journal of Asia-Pacific Biodiversity. In Press. DOI: doi.org/10.1016/j.japb.2026.03.007 [20 April 2026]

[Entomology • 2025] Crematogaster epispina • A New twig-nesting Species of the Crematogaster quadriruga group (Hymenoptera: Formicidae) from Vietnam

Crematogaster epispina  Hosoishi, 

in Hosoishi & Pham, 2025. 

 DOI: doi.org/10.1016/j.japb.2025.08.003

 Abstract

A new species of the ant genus Crematogaster is described from the worker and queen castes. Crematogaster epispina sp. nov., belonging to the Crematogaster quadriruga group, is discovered in a dead twig on a tree in Vietnam. Crematogaster epispina sp. nov. is distinguished from other members by having the propodeal spines curving upward and propodeal spiracles touching the metapleural gland bulla. An updated key to the species of the C. quadriruga group is proposed.

Keywords: Asia, Cuc Phuong National Park, dead twig, Orthocrema, taxonomy

 Crematogaster epispina sp. nov.:
A–C, holotype worker (HW, 0.42; WL, 0.47) (KUECANT051); A, body in profile view; B, full-face view of head; C, body in dorsal view.
D–F, paratype dealate queen (HW, 0.76; WL, 1.58) (KUECANT054); D, body in profile view; E,full-face view of head; F, body in dorsal view.

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Crematogaster epispina Hosoishi, sp. nov.

Diagnosis of worker. Antennal scape reaching posterolateral corners of the head. Propodeal spines thick and up-curved. Propodeal spiracle large and attached to the metapleural gland bulla. Subpetiolar process weakly developed. Subpostpetiolar process undeveloped, but venter of the postpetiole convex. Integument essentially smooth and shiny.

Diagnosis of queen. Antennal scape not reaching posterolateral corners of the head. Subpetiolar process low, with a ventral angle. Dorsal surface of the head smooth and shiny. Clypeus smooth.

Etymology. The species name refers to the upwardly directed propodeal spine of the species.

 

Shingo Hosoishi and Thai Hong Pham. 2025. Description of A New twig-nesting Species of the Crematogaster quadriruga group (Hymenoptera: Formicidae) from Vietnam, with an updated key. Journal of Asia-Pacific Biodiversity. In Press, DOI: doi.org/10.1016/j.japb.2025.08.003 [27 September 2025]

 

[Mollusca • 2025] Clione japonica • A New cryptic Species of Clione (Gastropoda: Gymnosomata) in deep waters of the Japan Sea (East Sea) and shallow waters of the southern Okhotsk Sea

 

Clione japonica

Tomoyasu, Hiroshi & Jing, 2025

DOI: doi.org/10.1016/j.japb.2025.10.002

Abstract

We describe a new cryptic species of Clione from intermediate and deep waters of the Japan Sea (East Sea) and from shallow coastal waters of the southern Okhotsk Sea. Diagnosis is based on a suite of stable morphological traits—particularly laterally extended foot lobes and a broader central radular tooth—with c oxidase subunit I (COI) data providing supplementary support. Maximum likelihood analyses of the COI dataset resolved two sister clades: specimens from the Japan Sea (East Sea) occurred only in the clade that also contains the new species, whereas specimens from the southern Okhotsk Sea occurred in both. In contrast, Automatic Barcode Gap Discovery, applied to the same alignment, recovered a single molecular operational taxonomic unit (MOTU) consistent with shallow divergence and the lack of a clear barcode gap. As COI distances from C. okhotensis Yamazaki & Kuwahara, 2017, are modest, we rely primarily on morphology and reciprocal monophyly for species recognition, with COI data playing a supplementary role. We hypothesize that hydrographic structure and Late Quaternary isolation of the Japan Sea (East Sea) shaped this lineage, and that its occurrence in the Okhotsk Sea reflects transport by regional water masses. The new species highlights hidden diversity in pelagic pteropods and the role of semi-enclosed seas in fostering regional differentiation.

Keywords: Clione, COI gene, gymnosomata, Japan Sea (East Sea), taxonomy

  The new species Clione japonica sp. nov., holotype (SMRZ M20):
A, front view; B, dorsal view; C, right-side view; D, left-side view

<scale bars: 2 mm (A–D)>.

Family CLIONIDAE Rafinesque, 1815

Genus Clione Pallas, 1774

Clione japonica sp. nov.  

Diagnosis. Body with three ciliated rings (anterior, mid-body, tail region). No space between head tentacles and mouth. Lateral foot lobes ellipsoidal and extending outward. Visceral mass bright orange to red, occupying much of the anterior body (Figure 2, Figure 3B). Radula with broad central tooth and protruding lateral expansions (Figure 4, Figure 5).

Etymology. The species name japonica refers to the location of first discovery, the Japan Sea (East Sea).

Distribution. Known from deep waters of the Japan Sea (East Sea) (JSPW and JSIW) and shallow waters of the southern Okhotsk Sea.

 Yamazaki Tomoyasu, Shimada Hiroshi and Zhang Jing. 2025. A New cryptic Species of Clione (Gastropoda) in deep waters of the Japan Sea (East Sea) and shallow waters of the southern Okhotsk Sea. Journal of Asia-Pacific Biodiversity. In Press, DOI: doi.org/10.1016/j.japb.2025.10.002 [7 November 2025]