Aduncothrips Ananthakrishnan, 1963

Li, Yajin, Elie, Ntirenganya, Liu, Hui & Zhang, Hongrui, 2022, Aduncothrips newly recorded from China, with three new species and a new generic synonym (Thysanoptera: Aeolothripidae), Zootaxa 5141 (1), pp. 49-59 : 50

publication ID

https://doi.org/ 10.11646/zootaxa.5141.1.4

publication LSID

lsid:zoobank.org:pub:271A3DDC-440A-4776-B88D-93589601778D

DOI

https://doi.org/10.5281/zenodo.6585267

persistent identifier

https://treatment.plazi.org/id/03FA87BD-B14C-C06A-FF62-FF1D42DBC3D1

treatment provided by

Plazi

scientific name

Aduncothrips Ananthakrishnan
status

 

Aduncothrips Ananthakrishnan View in CoL

Erythrothrips (Aduncothrips) Ananthakrishnan, 1963: 99 . Type species Erythrothrips asiaticus Ramakrishna & Margabandhu, 1931: 1029 View in CoL , by monotypy.

Desmidothrips Mound, 1977: 149 View in CoL . Type species D. walkerae Mound View in CoL , by original selection from two species. Syn.n.

The genus Aduncothrips View in CoL has been known only from India, with the only modern redescription provided by Rachana et al. (2020). In contrast, Desmidothrips View in CoL was erected for a species from New Zealand, and was compared only to three genera from the southern hemisphere in which species share the character state of the sternites bearing discal setae ( Mound 1977). At that time, it was not known that the type species of Aduncothrips View in CoL also shares this condition, in contrast to the many species of the northern hemisphere genus, Aeolothrips View in CoL , in which sternal discal setae are absent. In preparing the descriptions of the three new species from China given below, it was realized that the only character state to distinguish the genus Desmidothrips View in CoL from Aduncothrips View in CoL was the presence of a transverse dark band on the fore wings in contrast to longitudinal dark bands. However, the three new species from China are very similar to each other in sculpture and chaetotaxy, although one has fore wings with longitudinal bands and the other two species have transverse bands. Similar variation in wing pattern occurs among species of Aeolothrips View in CoL in Europe and North America ( Mound et al. 2019), and wing colour patterns are not accepted as a useful generic distinction in that genus. Females of Aduncothrips View in CoL have maxillary palp segment II subdivided ( Ananthakrishnan 1963, Rachana et al. 2020); a condition that also occurs in some other Aeolothripids. In the work presented here we have established that, in contrast to their conspecific females, the males of four Aduncothrips View in CoL species have the maxillary palp segment II undivided, whereas in two species both sexes have this segment undivided (the male is not known in one species). Intraspecific variation has also been reported in some Desmothrips View in CoL species ( Mound 1967). As a result of the generic synonymy proposed here a total of seven species are now listed in Aduncothrips View in CoL .

Diagnosis. Female. Body color usually brown or darker; fore wing with longitudinal dark bands. Antennae 9-segmented, VI–IX united, sensorium on III–IV vermicular and extending around apex with internal markings, segments V–VIII with small sense-cones having elongate bases ( Fig. 9 View FIGURES 1–9 ). Maxillary palps 3-segmented; females with segment II subdivided (except in inauditus and walkerae ), males with segment II not subdivided. Head and pronotum with transverse striae, without long setae. Mesonotum closely striate, CPS absent. Metascutum closely striate with markings between the striae. Fore tibiae with a pair of dark brown spines at apex. Abdominal tergites with transverse striae laterally; sternites with discal setae. Male. Similar to but smaller than female; tergites without tubercles, tergite I with paired longitudinal ridges, IX without claspers; sternites II–VII with 3–4 pairs of posteromarginal setae and with discal setae.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Thysanoptera

Family

Aeolothripidae

Loc

Aduncothrips Ananthakrishnan

Li, Yajin, Elie, Ntirenganya, Liu, Hui & Zhang, Hongrui 2022
2022
Loc

Desmidothrips

Mound, L. A. 1977: 149
1977
Loc

Erythrothrips (Aduncothrips)

Ananthakrishnan, T. N. 1963: 99
Ramakrishna, T. V. & Margabandhu, V. 1931: 1029
1963
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