Chaitophorus tremulae Koch, 1854

Choi, Hwalran, Kim, Yeyeun & Lee, Seunghwan, 2025, Unveiling hidden diversity: new records of Chaitophorus (Hemiptera, Aphididae) in Korea from historical specimens, Biodiversity Data Journal 13, pp. e 150852-e 150852 : e150852-

Chaitophorus tremulae Koch, 1854

Materials

Type status: Other material. Occurrence: catalogNumber: # 88 HA 3711 ; recordedBy: J. Havelka; individualCount: 6; sex: female; lifeStage: adult; occurrenceStatus: present; disposition: in collection; associatedOccurrences: host: Populus davidiana ; occurrenceID: 045CC865-6020-5684-B585-D80F05169086; Taxon: taxonID: 2074419; namePublishedInID: 10.5281/zenodo.14387432; scientificName: Chaitophorus tremulae Koch, 1854 ; namePublishedIn: Koch, C. L. (1854) In Die Pflanzenläuse Aphiden getreu nach dem Leben abgebildet und beschrieben. J. L. Lotzbeck, Nürnberg. Vol. 1, 1–36 pp.; higherClassification: Animalia; kingdom: Animalia; phylum: Arthropod; class: Insects; order: Hemiptera ; family: Aphididae ; genus: Chaitophorus ; specificEpithet: tremulae ; taxonRank: species; nomenclaturalCode: ICZN; Location: continent: Asia; country: North Korea; countryCode: KP; stateProvince: Ryanggang Province; municipality: Hyesan; decimalLatitude: 41.387; decimalLongitude: 128.174; geodeticDatum: WGS 84; coordinateUncertaintyInMeters: 100; Identification: identifiedBy: yeyeun Kim; dateIdentified: 2025-02-19; Event: samplingProtocol: hand collected; eventDate: 1988-06-28; year: 1988; month: 06; day: 28; Record Level: type: specimen; modified: 2025-03-28; language: en; rights: Seoul National University; rightsHolder: Seoul National University; accessRights: not for profit use only; institutionID: NPRI; collectionID: SNU; basisOfRecord: PreservedSpecimen

Type status: Other material. Occurrence: catalogNumber: # 5895 ; recordedBy: J. Havelka; individualCount: 2; sex: female; lifeStage: adult; occurrenceStatus: present; disposition: in collection; associatedOccurrences: host: Populus davidiana ; occurrenceID: B1911DEB-ECE7-5D4C-B3C1-B6F695873087; Taxon: taxonID: 2074419; namePublishedInID: 10.5281/zenodo.14387432; scientificName: Chaitophorus tremulae Koch, 1854 ; namePublishedIn: Koch, C. L. (1854) In Die Pflanzenläuse Aphiden getreu nach dem Leben abgebildet und beschrieben. J. L. Lotzbeck, Nürnberg. Vol. 1, 1–36 pp.; higherClassification: Animalia; kingdom: Animalia; phylum: Arthropod; class: Insects; order: Hemiptera ; family: Aphididae ; genus: Chaitophorus ; specificEpithet: tremulae ; taxonRank: species; nomenclaturalCode: ICZN; taxonomicStatus: accepted; Location: continent: Asia; country: South Korea; countryCode: KR; municipality: Seoul; decimalLatitude: 37.475; decimalLongitude: 126.948; geodeticDatum: WGS 84; coordinateUncertaintyInMeters: 100; Identification: identifiedBy: yeyeun Kim; dateIdentified: 2025-02-19; Event: samplingProtocol: hand collected; eventDate: 1970-05-06; year: 1970; month: 05; day: 06; Record Level: type: specimen; modified: 2025-03-28; language: en; rights: Seoul National University; rightsHolder: Seoul National University; accessRights: not for profit use only; institutionID: NPRI; collectionID: SNU; basisOfRecord: PreservedSpecimen

Description

Apterous viviparous female (Fig. 4 , Table 4 ). Colour (macerated specimens). Body extremely blackish, slightly bright in the spinal part of abdomen. Antennae pale, except Ant. I, distal part of Ant. IV, Ant. V., Ant. VIb and PT. Legs pale, except mid- and hind femora, basal part of hind tibia and 2 HT. Cauda and anal plate distinctly pale. SIPH dark as body colour. Morphology. Body elongated oval-shaped; about 2.20 mm long. Head: smooth, seta very long and spine. Antenna slender; whole antennae almost 0.57 times as long as body length; PT 2.73 times as long as Ant. VIb. URS short and slightly blunt, with eight or more setae. Thorax: pronotum smooth. Hind femur and tibia about 0.55 mm and 0.69 mm long, respectively; Abdomen: abdominal tergites fused from I to VI, with blunt or furcate seta; dorsum with pore-like microstructure in a row of each segment. SIPH short and finely reticulate. Cauda distinctly knobbed with six setae.

Host plants

P. maximowiczii , P. sieboldii , P. simonii , P. tremula ( Blackman and Eastop 2024) .

Diagnosis

C. tremulae closely resembles C. salijaponicus morphologically. However, it can be distinguished by body length and marginal tergites: in C. tremulae , body length is longer than 1.8 mm and has no sclerotised marginal tergites, whereas in C. salijaponicus , body length is shorter than 1.8 mm and sclerotised marginal tergites are developed.

Distribution

Korea (new record), Great Britain, Netherlands, Germany, Denmark, Spain, Norway, Finland, Poland, Hungary, Turkey, Russia, Caucasus, Kazakhstan, Siberia, China, Mongolia, Japan ( Blackman and Eastop 2024).

Figures

Figure 4. Apterous viviparous female of Chaitophorus tremulae Koch, 1854. A whole body; B hind tibia and tarsus; C antenna; D head; E cauda; F siphunculus; G ultimate rostral segments. Scale bar: A, 0.5 mm; B, C, 0.1 mm; D, 0.1 mm; E, F, G, 0.05 mm.