Danieliana, Percy, 2025

Percy, Diana M., 2025, A new psyllid genus from Taiwan, Danieliana gen. nov. (Hemiptera: Psylloidea: Psyllidae), Zootaxa 5727 (1), pp. 101-112 : 103-105

publication ID	https://doi.org/10.11646/zootaxa.5727.1.7
publication LSID	lsid:zoobank.org:pub:291AF60D-A9FF-4B3C-B249-4999BC88AB88
persistent identifier	https://treatment.plazi.org/id/5D1FB569-1A01-3450-7AB9-87128C66FD99
treatment provided by	Plazi
scientific name	Danieliana
status	gen. nov.

Treatment

Genus Danieliana gen. nov.

Type species: Danieliana manmiaoyangae sp. nov., by present designation. Adult structure. Mid-sized psyllid. Head, in profile, moderately inclined at 30–45° from longitudinal body axis ( Figs. 1H, 1M View FIGURE 1 ). Thorax moderately arched ( Fig. 1M View FIGURE 1 ). Vertex longer than genae, separated from genae by transverse suture; genae forming diverging conical processes contiguous at base; coronal suture fully developed. Antenna 10-segmented, filiform, equal to or more than 1.5 times as long as head width, segment 3 shorter than segment 7, segments 4–6 and 8 subequal ( Figs. 1I, 1J View FIGURE 1 ), a single subapical rhinarium on each of segments 4, 6, 8, and 9; terminal seta longer than segment 10 ( Fig. 1G View FIGURE 1 ). Clypeus slightly flattened ventrally, hardly visible in lateral view, distal proboscis segment short, distinctly exceeding procoxae ( Figs. 1F 1H View FIGURE 1 ). Thorax moderately arched ( Figs. 1H, 1M View FIGURE 1 ), width subequal to head width; pronotum ribbon-shaped; mesopraescutum in longitudinal body axis about as long as mesoscutum; propleurites with subequal epimeron and episternum. Legs moderately long ( Fig. 1M View FIGURE 1 ); metacoxa with moderately large, thorn-shaped meracanthus, length of metafemur and metatibia subequal, base of metatibia with short genual spine, apex bearing 5 (1+3+1) sclerotised apical spurs, basal metatarsus with 2 apical spurs and slightly shorter than apical metatarsus ( Fig. 1K View FIGURE 1 ). Forewing widest in apical half, broadly rounded apically ( Figs. 1A, 1C View FIGURE 1 ); membrane semitransparent, covered in densely spaced surface spinules in all cells, but with mostly spinule free areas bordering veins ( Fig. 1L View FIGURE 1 ); three typical radular spine clusters, one each at apical margin of cells cu 1, m 2 and m 1, and a fourth less prominent cluster at the apical margin of cell r 2 ( Fig. 1L View FIGURE 1 ); costal break developed; pterostigma broad but short; vein R longer than M+Cu; anal break close to apex of vein Cu 1b. Hindwing ~0.8 times length of forewing, membranous, costal setae grouped, vein M+Cu developed. Male proctiger one segmented, more or less parallel sided ( Fig. 2A View FIGURE 2 ); male subgenital plate elongate, about twice as long as high ( Fig. 2A View FIGURE 2 ); paramere in lateral view simple, long, and slender ( Figs. 2B, 2C View FIGURE 2 ), with long simple setae on the interior and posterior surfaces, and short simple setae on the exterior surface ( Fig. 2C View FIGURE 2 ). Female terminalia short ( Fig. 2K View FIGURE 2 ); proctiger apex acute in dorsal view ( Fig. 2G View FIGURE 2 ), anal ring narrowly oval and composed of a double row of cells ( Fig. 2J View FIGURE 2 ); subgenital plate shorter than proctiger, apex blunt in ventral view ( Fig. 2H View FIGURE 2 ); ovipositor small with valvulae dorsalis low ( Fig. 2I View FIGURE 2 ) .

Immature structure. Body elongate-oval in dorsal view with wing pads protruding ( Fig. 3A View FIGURE 3 ). Antenna 7- segmented, with last segment showing numerous partial divisions, longest segment 7th, shortest segment 4th, single subapical rhinarium on 3rd and 5th segments, and two on the basal half of 7th segment, with small scattered simple setae and two long stout setae apical and subapical on terminal segment ( Figs. 3C, 3D View FIGURE 3 ). Head and thorax with scattered long and shorter capitate setae and very short rod-like setae, and a single ocular capitate seta ( Fig. 3B View FIGURE 3 ). Forewing pads lacking humeral lobes, both forewing and hindwing pads bearing long marginal capitate setae, and shorter capitate setae on the surface ( Fig. 3H View FIGURE 3 ). Legs bearing capitate and simple setae ( Fig. 3I View FIGURE 3 ), tarsal arolium longer than claws, fan-shaped with petiole and unguitractor, claws well developed ( Fig. 3E View FIGURE 3 ). Caudal plate developed, semi-circular and rounded apically, with 4+4 marginal sectasetae and long capitate setae ( Fig. 3F View FIGURE 3 ). Anus in ventral position, circumanal ring heart-shaped, consisting of a single row of pores ( Fig. 3G View FIGURE 3 ).

Biology. Immatures are free living on young foliage.

Comment. Previously, Amorphicola , with two species, was the only genus in subfamily Amorphicolinae . Danieliana gen. nov. is sufficiently divergent from the North American Amorphicola based on both morphological and molecular data for these genera to be recognized as separate tribes within subfamily Amorphicolinae . Danieliana gen. nov. is similar to Amorphicola in general body and wing structure as given in Burckhardt et al. (2021). It differs from Amorphicola in having broader forewings with higher cells cu 1 and m 1, head with longer, upturned genae, longer antenna with a short 3 rd segment (shorter than 7 th and subequal to 4 th, 5 th, 6 th and 8 th), metatibia with a genual spine and 5 versus 4 apical spurs, paramere long and slender. Some of these differences suggest Danieliana gen. nov. shares traits characteristic of the related subfamily, Ciriacreminae ( Burckhardt et al. 2021). Ciriacreminae includes 19 genera most of which occur on Fabaceae hosts ( Ouvrard 2022). In particular, there is some resemblance to Isogonoceraia Tuthill, 1964 , particularly Isogonoceraia venusta Tuthill, 1964 with which Danieliana shares the broad forewing, longer antenna with near equal length of most flagellar sections ( Fig. 1J View FIGURE 1 ), large pterostigma (wide but short), presence of small genual spine, short female genitalia and somewhat in the shape of the female proctiger. It does not share the elongate vertex, contiguous genae, and peculiar shape of the aedeagus apex. Isogonoceraia includes two described species, with one species in Brazil and one species in the Mariana Islands ( Micronesia). Isogonoceraia is also the only member of Ciriacreminae with caesalpinoid legume hosts, a trait also shared with Danieliana

Systematics. Danieliana gen. nov. was included, as an undescribed genus, in the mitogenome analysis of Percy et al. (2018) (referred to as “Genus unnamed (Taiwan)” in Table 3) where it was found to group strongly (97%) in Group U with Amorphicola Heslop-Harrison, 1961 . Amorphicola includes two species, both distributed in North America on hosts in the legume genus Amorpha ( Fabaceae ) ( Tuthill 1943; Halbert & Burckhardt 2020; Ouvrard 2022). Group U was recognized as a new subfamily, Amorphicolinae , in Burckhardt et al. (2021) to accommodate Amorphicola , which is considered well characterised by its paramere morphology and by the Amorpha ( Fabaceae ) host associations. The phylogenetic placement and strong support grouping Danieliana gen. nov. with Amorphicola in Percy et al. (2018) implies it was tacitly assumed included in subfamily Amorphicolinae . The morphological differences between the two genera are also outlined in the revised subfamily definition (above) to accommodate Danieliana in subfamily Amorphicolinae .

Etymology. The genus name honours Daniel Burckhardt for his prodigious contribution to our knowledge of psyllids.

Note on species description. Danieliana gen. nov. is described as a monotypic genus. The species description below provides details of species-specific characteristics not supplied in the generic description above.