Zootaxa

Psyllidology—A special volume dedicated to Daniel H. Burckhardt on the occasion of his 70 birthday (Title page)

DAVID OUVRARD — Mon, 08 Dec 2025 00:00:00 +1300

Psyllidology—A special volume dedicated to Daniel H. Burckhardt on the occasion of his 70 birthday (Table of contents)

DAVID OUVRARD — Mon, 08 Dec 2025 00:00:00 +1300

Foreword

DAVID OUVRARD — Mon, 08 Dec 2025 00:00:00 +1300

Daniel H. Burckhardt at 70—an appreciation

Mon, 08 Dec 2025 00:00:00 +1300

PD Dr Daniel H. Burckhardt (Figs 1–4) turned 70 on 26 July 2023.

His extensive body of work on the taxonomy of insects, initiated even before his doctoral thesis on Western Palaearctic Aphalaridae in 1983, has since expanded to encompass all major psyllid groups (Hemiptera: Sternorrhyncha: Psylloidea), both extant and extinct, but also moss bugs (Hemiptera: Coleorrhyncha) and several families of beetles (Coleoptera, mainly Passandridae, but also Jacobsoniidae, Pterogeniidae and Staphylinidae). These contributions have had a profound and lasting impact on our global understanding of these relatively small and often overlooked groups of insects.

The biographical details of Daniel Burckhardt’s career and life will not be revisited here, as they have already been thoroughly documented elsewhere. In terms of his tireless dedication and remarkable productivity, the comprehensive list of his publications at the end of this article speaks for itself.

Another telling measure of his influence within entomology is the number of PhD students he has mentored, formally or informally, many of whom have gone on to establish successful careers in leading research institutions and natural history museums across Europe and beyond. At a time when taxonomic expertise is rapidly declining, with serious implications for biodiversity research, agriculture and conservation, his intellectual legacy, marked by rigour, precision, and clarity, has been effectively passed on to the next generation.

This tribute aims above all to highlight the personal and professional impact Daniel Burckhardt has had on so many colleagues and collaborators. Rather than a conventional biography, it offers a space for those who have worked with him to share their experiences and anecdotes, and to reflect on the influence he has had on their scientific journeys.

Burckhardtiana gen. nov., the first Neotropical member of the Euphyllurinae (Hemiptera: Psylloidea: Liviidae)

DALVA L. QUEIROZ — Mon, 08 Dec 2025 00:00:00 +1300

Burckhardtiana gen. nov. (Liviidae: Euphyllurinae) and three constituent Brazilian species, viz. B. apollo sp. nov., B. athena sp. nov and B. zeus sp. nov., are described and illustrated. Keys are provided for the identification of adults and immatures. The relationships to other members of Euphyllurinae, a subfamily previously unknown from the Americas, are discussed. The new species develop on Roupala montana (Proteaceae). This family is an unusual psyllid host (for 5 spp. in Australia and 2 spp. in South Africa).

**Life on sticky plants: two new species of Mitrapsylla (Hemiptera: Psylloidea: Psyllidae) on Chamaecrista (Fabaceae) in the Brazilian Highlands**

IGOR MALENOVSKÝ, LILIYA Š. SERBINA, DALVA L. QUEIROZ — Mon, 08 Dec 2025 00:00:00 +1300

Two new species of the Neotropical jumping plant-louse genus Mitrapsylla Crawford (Hemiptera: Psylloidea: Psyllidae: Ciriacreminae) are described from the highlands of the state of Minas Gerais in the Southeast Region of Brazil. Both species are associated with Chamaecrista (Fabaceae: Caesalpinioideae) and represent the first records of Psylloidea from this plant genus. Chamaecrista, especially its section Absus, has many species endemic to the Cerrado and Caatinga biomes in eastern Brazil. They are characterised by the presence of glandular trichomes that produce sticky secretion that hinders insect mobility and herbivory. Mitrapsylla burckhardtiella sp. nov. is unique within Mitrapsylla because of the long legs and rostrum in the adults and immatures, as well as the details of the tarsus, arolium and claws, the ventral position of the anus, the reduced sectasetae on the caudal plate and the presence of numerous long and thick capitate setae on dorsal sclerites and tubercles in the immatures. These character states are interpreted here as adaptations to living on young leaflets and stems of inflorescences of the densely hairy host plant Chamaecrista ursina, which may help to minimise contact with sticky exudates and camouflage the immatures on the surface of the host plant. In contrast, Mitrapsylla danieli sp. nov. associated with the sparsely haired Chamaecrista hedysaroides lacks these adaptations, and the morphology of adults and immatures is more similar to other Mitrapsylla spp. with non-sticky hosts. The phylogenetic relationships and systematic placement of the two new species within Mitrapsylla and other South American Ciriacreminae are also discussed on the basis of a phylogenetic analysis of the DNA sequences of the mitochondrial COI and cytb gene fragments, which we provide for the first time for four species of Mitrapsylla and two species of Queiroziella Burckhardt. As far as is known, M. burckhardtiella sp. nov. and M. danieli sp. nov. have a limited distribution in the highly diverse but threatened habitats of the Brazilian Cerrado and Campo Rupestre and may be of conservation importance, requiring further study.

**A new psyllid genus from Taiwan, Danieliana gen. nov. (Hemiptera: Psylloidea: Psyllidae)**

DIANA M. PERCY — Mon, 08 Dec 2025 00:00:00 +1300

A new genus, Danieliana gen. nov., in the subfamily Amorphicolinae (Psyllidae) is described, and one new species is described from Taiwan, D. manmiaoyangae sp. nov. The definition of the subfamily Amorphicolinae previously based solely on Amorphicola is broadened to incorporate characteristics of the new genus not shared with Amorphicola. Amorphicola with two species from North America and Danieliana gen. nov. from Taiwan, are strongly supported grouping together in Amorphicolinae based on mitogenome data. The morphological and molecular divergence between the two genera is reflected in the placement in separate tribes within the subfamily (Amorphicolini trib. nov. and Danielianini trib. nov.). The host plant of D. manmiaoyangae sp. nov. is Caesalpinia crista (Fabaceae), and the immatures are free-living with eggs found on emerging foliage. The genus name and species name honour entomologists, Daniel Burckhardt and Man-Miao Yang, who together have contributed enormously to the knowledge of the psyllid fauna of Taiwan, as well as to a wide breadth of research that has furthered our understanding of psyllids.

The psyllid genus Triozidus Li, 1994 stat. rev., sensu novo (Hemiptera: Psylloidea: Triozidae) in East Asia is redefined with the addition of two new species from Taiwan inducing galls on the leaflet petiolules of Eleutherococcus trifoliatus (Araliaceae)

YI-CHANG LIAO, HIROMITSU INOUE, DIANA M. PERCY — Mon, 08 Dec 2025 00:00:00 +1300

The genus Triozidus Li, 1994 stat. rev., sensu novo has a complex history. Here we redefine the genus as a natural group with two new species from Taiwan, Triozidus burckhardti Liao & Percy sp. nov. from the southernmost peninsula, and Triozidus yangorum Liao & Percy sp. nov. from the central and northern mountain region. In addition, we redescribe the type species, Triozidus stackelbergi (Loginova, 1967) comb. nov. and Triozidus ukogi (Shinji, 1940) comb. nov., and we propose new combinations for a further two species as follows: Triozidus ceratophorus (Li, 2005) comb. nov. and Triozidus eleutherococci (Konovalova, 1980) comb. nov.; all new combinations except the latter are transferred from Heterotrioza Dobreanu & Manolache, and T. eleutherococci from Trioza Foerster. All but one Triozidus species with confirmed host plants are known to produce enclosed galls on Eleutherococcus (Araliaceae): Triozidus stackelbergi produces round galls on the leaf surface of Eleutherococcus sessiliflorus or more variably on leaf petioles, flowers, fruits and twigs of E. divaricatus; T. ukogi produces spindle-shaped galls on the leaf petioles or petiolules of E. spinosus; and T. yangorum produces round galls on the petiolules of the compound leaves or leaf bases of Eleutherococcus trifoliatus; T. burckhardti appears to share the same host plant and similar galling biology as T. yangorum. The description of T. yangorum and redescriptions of T. stackelbergi and T. ukogi are based on adults and immatures, and the immatures of T. stackelbergi and T. ukogi are described for the first time. Additionally, we provide new host and distribution records for T. stackelbergi in Japan. We provide identification keys for both adults and immatures, DNA barcode data for four of the six species, and an annotated mitochondrial genome for T. yangorum.

Trioza burckhardti sp. nov. (Hemiptera: Triozidae)—the first record of jumping plant-lice associated with Proteaceae in North Hemisphere

YI-CHANG LIAO, MAN-MIAO YANG — Mon, 08 Dec 2025 00:00:00 +1300

Trioza burckhardti sp. nov., a new species of jumping plant lice (Hemiptera: Triozidae) from Taiwan, is described and illustrated based on both adults and immatures. The latter induce leaf-curling galls on the shoots and flowers of Helicia spp. (Proteaceae) in Taiwan. This is the first recorded triozid species associated with Proteaceae in the Northern Hemisphere.

**Taxonomy and DNA barcoding of Cyamophila (Hemiptera: Psyllidae) from Japan, with the description of a new species**

HIROMITSU INOUE — Mon, 08 Dec 2025 00:00:00 +1300

The jumping plant-lice of the genus Cyamophila from Japan are reviewed. Three species are recognized. The new species, Cyamophila burckhardti sp. nov. is described. One new synonym is proposed: Cyamophila hexastigma (Horváth) = Cyamophila floribundae Cho & Burckhardt syn. nov. Cyamophila hexastigma and C. willieti (Wu) are redescribed, and the latter is newly recorded from Japan. Keys to species for adults and immatures, diagnoses, biological information, and DNA barcoding results are provided.

The jumping plant-lice (Hemiptera: Psylloidea) of Myanmar

GEONHO CHO, SEUNGHWAN LEE — Mon, 08 Dec 2025 00:00:00 +1300

The jumping plant-lice of Myanmar are reviewed based on material collected during recent expeditions by the Seoul National University (2016–2019) and published records. To date, only five psyllid species, viz. Ctenarytaina gravelyi, Diaphorina citri, Diceraopsylla brunettii, Pauropsylla depressa and Pseudophacopteron tuberculatum have been recorded from Myanmar. In this study, 21 species of 5 families, 10 subfamilies, and 16 genera are presented. Yangus burckhardti Cho sp. nov. is described from Myanmar. The new species is diagnosed and illustrated, and a key is provided to identify the adults of Yangus species in the world. The new species develops on Harrisonia perforata (Blanco) Merr. (Rutaceae), a liana species native to Southwest China to Tropical Asia. The distribution and host plants are provided for Myanmar based on museum material and published records.

Two new and rare psyllids (Hemiptera, Psylloidea) from French Polynesia

DIANA M. PERCY — Mon, 08 Dec 2025 00:00:00 +1300

Two new psyllid species, Ctenarytaina elinae sp. nov. and Anomocephala rosiegeorgeorum sp. nov., are described from French Polynesia. Both are single island endemics known only from a small number of specimens. Ctenarytaina elinae sp. nov. is in the primarily Austro-Pacific genus Ctenarytaina Ferris & Klyver (Aphalaridae), and with the addition of C. elinae there are now three Ctenarytaina species in French Polynesia. Ctenarytaina elinae sp. nov. is endemic to Tahiti in the Society Islands, and although the host is unrecorded there is some evidence to suggest it may be Metrosideros (Myrtaceae). Previously monotypic, Anomocephala Tuthill (Triozidae), with the addition of A. rosiegeorgeorum sp. nov., now includes two species, and both of these are endemic to Rapa island in the southern Austral archipelago. Both the genus, Anomocephala, and the type species, Anomocephala unica Tuthill, 1942, are redescribed. The host plant of Anomocephala rosiegeorgeorum sp. nov. is likely Metrosideros collina. The new species names recognize entomologists working in the Pacific, and this contribution to this special issue honours one of the most prolific psyllid researchers and taxonomists, Daniel Burckhardt.

New records of jumping plant lice (Hemiptera: Psylloidea) from Iran

MOHAMMADREZA LASHKARI, SEYED MOZAFFAR MANSOURI — Mon, 08 Dec 2025 00:00:00 +1300

Colposcenia albomaculata Loginova (Aphalaridae) and Cacopsylla initialis (Loginova) (Psyllidae) are recorded for the first time from Iran. The former was previously known only from Afghanistan, Tadzhikistan, Turkmenistan and Uzbekistan, and the latter from Armenia and the Korean Peninsula. Here we discuss morphological characters for separating Colposcenia albomaculata and the similar C. osmanica Vondráček, and we redescribe C. initialis. Moreover, morphological similarity suggests that C. initialis and Psylla praevia Loginova are congeneric, and, therefore, we propose the following new combination: Cacopsylla praevia (Loginova), comb. nov.

**Similar male calling signals in morphologically different sympatric species of Aphalara Foerster, 1848 (Hemiptera: Psylloidea: Aphalaridae)**

DMITRI YU. TISHECHKIN — Mon, 08 Dec 2025 00:00:00 +1300

In many insect taxa, comparative analysis of acoustic signals is a useful tool for recognition of biological species. However, in species that do not perceive each other’s signals due to allopatry, different biotopic preferences, or host specializations, signal patterns can be similar. I revealed two pairs of morphologically distinctive Aphalara species producing almost identical vibrational signals. Aphalara avicularis and A. freji were not strictly sympatric, but acoustic interactions between them due to physical contact between their host plants or accidental landing of insects on alien hosts is quite possible. A. borealis and A. maculipennis were strictly sympatric and are certainly able to perceive each other’s signals. Apparently, during the mate search, the studied species, in addition to vibrational communication, use chemical or/and visual cues. Thus, in the taxonomy of psyllids, the acoustic signal pattern is by no means always a reliable species trait. Distinct differences in the genitalia shape certainly indicate that the studied taxa are different species. At the same time, the similarity of signals in such species, even if they are strictly sympatric, cannot be evidence of their taxonomic synonymy.

**A new genus and species of mid-Cretaceous whitefly—Patsenga danielburckhardti gen. et sp. nov. (Hemiptera, Sternorrhyncha, Aleyrodidae) from amber of Kachin, Myanmar**

JOWITA DROHOJOWSKA, BARBARA FRANIELCZYK-PIETYRA, JACEK SZWEDO — Mon, 08 Dec 2025 00:00:00 +1300

A new genus and species of Bernaeinae whiteflies from the early Cenomanian Kachin (Myanmar) amber is described. Patsenga danielburckhardti Drohojowska et Szwedo gen. et sp. nov. is the third representative of Bernaeinae from Kachin amber, exhibiting a combination of plesiomorphic characteristics, including the retention of a median ocellus, and the presence of vein M, alongside apomorphic states that are also shared with other contemporaneous Bernaeinae from this fossil resin. Morphological characters of the newly described fossil are briefly discussed.