Xylococcidae
Creators: name: Wu, San-An
name: Xu, Han
name: Zheng, Xinyi
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Xylococcidae

description: Key to families in the “ Xylococcidae and related groups” based on macropterous adult male   Notes: the following key is mainly based on the key in Hodgson & Foldi (2006) for the extant families and on the key in Koteja (2008) for the extinct families. The Kuwaniidae information is from the description for Kuwania bipora (Wu 2008).   
1(0) Groups of tubular ducts present medially on abdominal segments VII only........................................ 2  
- Groups of tubular ducts present medially on both segments VI and VII.......................................... 3  
 2(1) Antennae 10-segmented; fore wing with regular pinnate sculpture.................................. Matsucoccidae   
 - Antennae 9-segmented; fore wing without regular pinnate sculpture.................................... Ortheziidae   
3(1) Fore wing with a club-shaped pterostigma................................................................. 4  
- Fore wing without pterostigma.......................................................................... 7  
 4(3) Fore legs fossorial......................................................................... Margarodidae   
- Fore legs normally developed, not fossorial................................................................ 5  
 5(4) Fore wing with anterior flexing patch forked, and 2 posterior flexing patches............................ Qinococcidae   
- Fore wing with anterior flexing patch unbranched, and 0 or 1 posterior flexing patch............................... 6  
 6(5) Fore wing with cubital ridge and posterior flexing patch............................................ Weitschatidae   
 - Fore wing without cubital ridge or posterior flexing patch........................................... Jersicoccidae   
 7(3) Antennae pectinate....................................................................... Stigmacoccidae   
- Antennae filiform..................................................................................... 8  
 8(7) Each claw with several digitules.............................................................. Callipappidae   
- Each claw with 1 pair of digitules........................................................................ 9  
 9(8) Tarsus 5-segmented........................................................................ Macrodrilidae   
- Tarsus with 1 or 2 segments............................................................................ 10  
10(9) Fore wing with radial sector vein........................................................................ 11  
- Fore wing without radial sector vein..................................................................... 12  
 11(10) Endophallus present; claw with a pair of acute digitules............................................ Xylococcidae   
 - Endophallus absent; claw with a pair of knobbed digitules........................................... Kuwaniidae   
 12(10) Capitate setae present on antennae and legs........................................................ Arnoldidae   
- Capitate setae absent................................................................................. 13  
 13(12) Cubital ridge long, approaching posterior wing margin beyond 2/3 of its length; scutellum triangular........... Grohnidae   
 - Cubital ridge very short, reaching posterior wing margin at 1/4 of its length; scutellum oval................. Serafinidae
description: Published as part of Wu, San-An, Xu, Han & Zheng, Xinyi, 2022, A new coccoid family (Hemiptera: Coccomorpha) for an unusual species of scale insect on Podocarpus macrophyllus (Podocarpaceae) from southern China, pp. 543-558 in Zootaxa 5120 (4) on page 557, DOI: 10.11646/zootaxa.5120.4.5, http://zenodo.org/record/6392851