Valid Names Results
Wu, S.-A., 2022 (Qinococcidae
Type species: Qinococcus podocarpus Wu, S.-A.
by original designation
accepted valid name
Notes: The adult male of the species has compound eyes and a waxy tuft on the abdomen, and is undoubtedly a member of the “Xylococcidae and related groups” informal grouping. Since these adult males also have unusual venation of the fore wing and morphology of the post-tergites on the prothorax, a new family and genus were established for the species.
- Systematics: This new family was established mainly based on the structure of the adult male of Q. podocarpus Wu, sp. n., which possesses: 1) prothorax with an inverted “π”-like post-tergite, and 2) fore wing with pterostigma and unusual venation, with the anterior flexing patch branched and a clear line present posterior to the cubital ridge. Based on the morphology of the adult male, the new family Qinococcidae is closest to the extinct family Weitschatidae Koteja 2008. They share the following characters: antennae each 10-segmented, with flagellar segments cylindrical and lacking capitate setae; compound eyes present; scutum without a membranous area; scutellum without membranous lateral areas; basisternum hexagonal; fore wings hyaline, broad at base, with a narrow alar fold for holding hamuli, subcostal ridge with distinct club-shaped pterostigma, cubital ridge situated beyond middle of wing; tarsus two-segmented; tail tufts present on abdominal tergites VI and VII (Koteja 2008; Vea & Grimaldi 2015; Lin et al. 2018); but Qinococcidae can be easily distinguished from Weitschatidae by the anterior flexing patch being forked and in having two posterior flexing patches in the fore wing.
- Structure: Family diagnosis. Adult female. Body tadpole-shaped, with head and thorax wide and abdomen narrow. Antennae much reduced, plate-like. Mouthparts developed. Legs much reduced. Thoracic spiracles with pores in atrium; abdominal spiracles numbering 5 pairs, also each with pores in atrium. Anal ring simple. Venter of abdominal segment I developed. Vulva opening longitudinally. Pores of several types present, including large simple pores and multilocular pores, each with 2–6 central loculi. Adult male. Xylococcid-like; antennae each filiform, long, and 10- segmented. A pair of compound eyes and
two dorsal ocelli present. Legs well developed, with tarsi each 2-segmented; each claw with 2 denticles. Abdomen
with large tubular ducts on tergites VI and VII. Head with a box-like arrangement of ventral ridges. Prothorax dorsally with strong pronotal ridge extending uninterrupted across hind part of neck, and an inverted “π”-like posttergite. Fore wing large, with a pterostigma, anterior flexing patch branched, and a clear line present posterior to cubital ridge. Hind wing reduced, lobe-like, with apex bilobate. Endophalus absent.
- General Remarks: Detailed description and illustration in Wu, Xu & Zhang, 2022 The genus is monotypic at present(2022), however, Wu, et al. state that based on the published descriptions of the adult females of Jansenus burgeri Foldi and Neogreenia spp., it is
possible that these two genera may also fall within Qinococcidae, but none of their males have been studied. The adult females of these three genera all share (i) vulva opening longitudinally, and (ii) multilocular pores each with 2–6 central loculi
biology, description, taxonomy, pp. 544-545