Kerriidae Lindinger 1937
Creators: name: Kondo, Takumasa
name: Silva, Vitor Cezar Pacheco Da
name: Júnior, Alberto Luiz Marsaro
name: Takahashi, Satomi Moriyama
name: Peronti, Ana Lúcia Benfatti Gonzalez
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Kerriidae

description: Revised key to world genera of the family Kerriidae, based on adult females
(modified from Kondo & Gullan 2005, 2007)
1(0) With perivulvar pore clusters........................................................................... 2
– Without perivulvar pore clusters......................................................................... 6
2(1) With 3 or more pairs of perivulvar pores clusters, usually with 9–25 pairs......................................... 3
– With only 2, rarely 3 pairs of perivulvar pore clusters......................................................... 5
3(2) Antennae long, usually with 4 or 5 segments. Brachia long, Brachial plates heavily sclerotized, with a distinct terminal constriction behind crater rim...................................................... Metatachardia Chamberlin
– Antennae short, usually with 1 or 2 segments, rarely with 3 or 4. Brachia either long or short. Brachial plate mildly or heavily sclerotized, without a distinct terminal constriction behind crater rim............................................ 4
4(3) Canellar pores present near mouthparts......................................... Kerria (Chamberliniella) Varshney
- Canellar pores absent from near mouthparts....................................... Kerria (Kerria) Targioni Tozzetti
5(2) Marginal duct clusters usually duplex (Fig. 1B), rarely simplex (Fig. 1A). Last antennal segment bearing 3–8 setae........................................................................................... Tachardiella Cockerell
– Marginal duct clusters triplex (Fig. 1C). Last antennal segment bearing only 2 setae........ Austrotachardiella Chamberlin
6(1) Marginal duct clusters each heavily sclerotized, forming a subcircular to oval sclerotized plate (Fig. 1D).................................................................. Neotachardiella Kondo, Peronti, & Pacheco da Silva, gen. nov.
‒ Marginal duct clusters each membranous or only slightly sclerotized, not forming a sclerotized plate................... 7
7(6) Brachial plates often each with an elevated area or accessory projection containing a group of pseudospines.Brachia membranous, very long and often narrow. Dorsal spine situated at end of a long and narrow membranous pedicel... Albotachardina Zhang
– Brachial plates each without an elevated area. Brachia usually short and relatively thick. Dorsal spine not located at end of a long and narrow membranous pedicel..................................................................... 8
8(7) Dorsal spine duct(s) non-dendritic.................................................. Austrotachardia Chamberlin
– Dorsal spine duct(s) dendritic............................................................................ 9
9(8) Each marginal duct cluster with 2 closely associated auxiliary clusters, although auxiliary clusters are occasionally absent from 1 or 2 marginal duct clusters per specimen........................................... Afrotachardina Chamberlin
– Each marginal duct cluster without auxiliary clusters, although some microducts may be found scattered around its border.. 10
10(9) Anal ring divided into 4 separate sections. Derm around microducts in marginal duct clusters often slightly to moderately sclerotized; duct rims of 2 or more microducts often fused, especially around outer margin of cluster... Tachardina Cockerell
– Anal ring not divided into 4 separate sections, but may show partial segmentation. Derm around microducts in marginal duct clusters without any sclerotization; microducts not fused, although they may touch each other. Paratachardina Balachowsky
description: Published as part of Kondo, Takumasa, Silva, Vitor Cezar Pacheco Da, Júnior, Alberto Luiz Marsaro, Takahashi, Satomi Moriyama & Peronti, Ana Lúcia Benfatti Gonzalez, 2025, Redescription of Tachardiella ourinhensis Hempel, 1937 (Hemiptera: Kerriidae) and its transfer to Neotachardiella gen. nov., with descriptions of two new species of Neotachardiella on Myrtaceae from Brazil and Uruguay, pp. 269-286 in Zootaxa 5588 (2) on page 272, DOI: 10.11646/zootaxa.5588.2.4, http://zenodo.org/record/14896458