Eretmocerus liangyihchoui Shih, Ward & Polaszek, 2016

Ward, Samantha E., Shih, Yuan Tung, Ko, Chiun-Cheng & Polaszek, Andrew, 2016, Two new species of Eretmocerus Haldeman (Hymenoptera: Aphelinidae) parasitizing Aleurolobusrhododendri Takahashi and Dialeuroporadecempunctata (Quaintance & Baker) (Hemiptera: Aleyrodidae) from Taiwan, Biodiversity Data Journal 4, pp. 7713-7713 : 7713

Eretmocerus liangyihchoui Shih, Ward & Polaszek, 2016 sp. n.

Materials

Type status: Holotype. Occurrence: occurrenceRemarks: ex Aleurolobusrhododendri on Bauhiniavariegata; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Wufeng District, Taichung City, Taiwan Agricultural Research Institute ; Event: eventDate: 27-X-1993; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex Aleurolobusrhododendri on Bauhiniavariegata; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Nantou ; Event: eventDate: 28-X-1993; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on Averrhoacarambola; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Chiai ; Event: eventDate: 5-XI-1993; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on A.carambola; recordedBy: Ko Chiun-Cheng; individualCount: 3; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Wufeng ; Event: eventDate: 16-XI-1993; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on A.carambola; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Wufeng ; Event: eventDate: 16-XI-1993; Record Level: institutionCode: Natural History Museum, London, UK (BMNH) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on A.carambola; recordedBy: Ko Chiun-Cheng; individualCount: 2; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Fengshan ; Event: eventDate: 22-XI-1993; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on Rhododendronformosanum; recordedBy: Ko Chiun-Cheng; individualCount: 2; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Chushan ; Event: eventDate: 29-XI-1993; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on B.variegata; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Wufeng District, Taichung City, Taiwan Agricultural Research Institute ; Event: eventDate: 8-XII-1993; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on B.variegata; recordedBy: Ko Chiun-Cheng; individualCount: 2; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Nantou ; Event: eventDate: 23-XII-1993; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on B.variegata and A.carambola; recordedBy: Ko Chiun-Cheng; individualCount: 2; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Chunghsinghsintsun ; Event: eventDate: 23-XII-1993; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on B.variegata; recordedBy: Ko Chiun-Cheng; individualCount: 3; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Wufeng District, Taichung City, Taiwan Agricultural Research Institute ; Event: eventDate: 31-XII-1993; Record Level: institutionCode: 2♀ Natural History Museum, London, UK (BMNH), 1♀ Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on A.carambola; recordedBy: Ko Chiun-Cheng; individualCount: 2; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Wufeng ; Event: eventDate: 6-I-1994; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on B.variegata; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Wufeng District, Taichung City, Taiwan Agricultural Research Institute ; Event: eventDate: 17-I-1994; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on R.formosanum; recordedBy: Ko Chiun-Cheng; individualCount: 3; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Yangmingshan ; Event: eventDate: 27-I-1994; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on B.variegata; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Wufeng District, Taichung City, Taiwan Agricultural Research Institute ; Event: eventDate: 3-II-1994; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on Puerarialobata; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Wufeng ; Event: eventDate: 10-III-1994; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex Aleurocybotus sp. on Miscanthusfloridulus; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Kungkuan ; Event: eventDate: 20-III-1994; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on A.carambola; recordedBy: Ko Chiun-Cheng; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Mucha ; Event: eventDate: 7-I-1995; Record Level: institutionCode: Taiwan Agricultural Research Institute, Wufeng, Taiwan (TARI) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on Rhododendronoldhamii; recordedBy: Yuan Tung Shih; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Huwei ; Event: eventDate: 14-IX-2005; Record Level: institutionCode: National Taiwan University, Taipei, Taiwan (NTU) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on R.oldhamii; recordedBy: Yuan Tung Shih; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Linkou ; Event: eventDate: 4-XI-2005; Record Level: institutionCode: National Taiwan University, Taipei, Taiwan (NTU) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on R.oldhamii; recordedBy: Yuan Tung Shih; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Nantou ; Event: eventDate: 18-I-2006; Record Level: institutionCode: National Taiwan University, Taipei, Taiwan (NTU) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on R.formosanum; recordedBy: Yuan Tung Shih; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Ankeng ; Event: eventDate: 28-XII-2008; Record Level: institutionCode: National Taiwan University, Taipei, Taiwan (NTU) Type status: Paratype. Occurrence: occurrenceRemarks: ex A.rhododendri on R.formosanum; recordedBy: Yuan Tung Shih; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eretmocerusliangyihchoui; Location: country: Taiwan; locality: Yangmingshan ; Event: eventDate: 16-I-2009; Record Level: institutionCode: National Taiwan University, Taipei, Taiwan (NTU)

Description

Female holotype.

Body length: 1.1 mm.

Colour. Head yellow to pale brown. Mesosoma yellow, some individuals with mid lobe of mesoscutum and metanotum brown; propodeum dark brown, but paler laterally. Gaster yellow. Antenna yellow to pale brown. Wings hyaline, except marginal and submarginal vein brown. Legs pale yellow.

Morphology.

Antenna (Fig. 7). Scape 4.5 × as long as wide, 2.8 × as long as radicle, 2.3 × pedicel length, 0.7 × clava length; pedicel 2.1 × as long as wide, 1.2 × as long as radicle, 0.4 × scape length; funicle I trapezoid, dorsal length 0.3 × ventral length; funicle II transverse rectangular, 2.4x as wide as long; clava clavate, much narrower at base than apex, 3.8-3.9 × as long as greatest width, 1.5 × scape length, 3.5 × pedicel length; clava with 16-20 longitudinal sensilla.

Head (Fig. 8). Vertex with 17-18 pairs of setae; face and occiput with transverse substrigose sculpture, interscrobal area vertically strigose; face with 10-12 pairs of setae; supraclypeal area with 13-15 setae; clypeus with 2+2 setae; upper posterior head with 14-16 setae, 3 pairs of long and robust setae present in a row across the head; lower posterior head with 12+12 setae.

Mesosoma (Fig. 9). Mid lobe of mesoscutum with 8 setae, anterior part with cellular reticulate sculpture, remainder with faint elongate reticulations; side lobe with 3 setae, anterior margins with faint reticulations; axilla with 1 long seta, weakly reticulate; scutellum with 4 setae, anterior pair length almost the same as posterior pair; 2 placoid sensilla placed close to the posterior pair of setae; scutellar reticulation weak; frenal arms normal, exceeding metanotum slightly.

Wings (Fig. 11). Fore wing 2.5-2.6 × as long as maximum width of disc; longest posterior marginal fringe seta 0.2 × disc width; base of wing with one seta, distal portion of costal cell with 4 setae; marginal vein short, 0.65 × Submarginal vein length, with 3-4 larger setae; parastigma with 1-2 long setae; a group of setae forming 3-4 lines between marginal vein and linea calva; linea calva incomplete, closed basally by 10-13 setae; submarginal vein with 3 long setae, 1.53 × as long as marginal vein and 2.7 × stigmal vein; marginal vein 1.77 × stigmal vein.

Legs. Mid tibial spur 0.5 × basitarsus length. Hind tibial spur 0.3 × basitarsus length.

Gaster. Gastral tergite 1 with reticulations on lateral margins; tergites 1-6 with paired setae as follows: 1, 2, 2, 2, 2, 1; syntergum (T7) with 4 setae; ovipositor (Fig. 10) normal, not exserted, 1.3 × clava, longer than mid tibia; 2.0 × scape.

Male. Unknown.

Diagnosis

Eretmocerus liangyihchoui sp.n. can be distinguished from other species in the genus by the following combination of characters: Mesoscutum with 8 setae; scape more than 0.66x clava length; propodeum dark brown.

Etymology

The species name liangyihchoui commemorates the late Dr Chou Liang-yih’s contribution to Aphelinidae studies in Taiwan.

Distribution

TAIWAN: Taipei City: Kungkuan, Mucha, Yangmingshan; New Taipei City: Ankeng; Taoyuan City: Linkou; Nantou County; Taichung City: Wufeng, TARI; Yunlin County: Huwei; Chiai City; Kaohsiung City: Fengshan.

Biology

Host.

Hemiptera : Aleyrodidae : Aleurolobus rhododendri Takahashi.