Tiarodes miyamotoi Ishikawa, Ca i and Tomokuni, 2005

Ishikawa, Tadashi, 2016, Discontinuous color variation in the assassin bug species Tiarodesmiyamotoi (Hemiptera: Reduviidae: Reduviinae), Biodiversity Data Journal 4, pp. 10225-10225 : 10225

Tiarodes miyamotoi Ishikawa, Ca i and Tomokuni, 2005

Tiarodes miyamotoi Ishikawa, Cai and Tomokuni, 2005, p. 282-285, orig. descr. and figs; Ishikawa and Miyamoto, 2012, p. 269, descr. and figs; Ishikawa, 2016, p. 447, cat.

Materials

Type status: Paratype. Occurrence: catalogNumber: 2016-00004 ; recordedBy: Tadafumi Nakata; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Ishigaki-jima Island; country: Japan; stateProvince: Okinawa; municipality: Ishigaki City; locality: Mt. Yarabu-dake ; decimalLatitude: 24.4401; decimalLongitude: 124.0869; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2000-07-11; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00005 ; recordedBy: Tadafumi Nakata; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Ishigaki-jima Island; country: Japan; stateProvince: Okinawa; municipality: Ishigaki City; locality: Mt. Yarabu-dake ; decimalLatitude: 24.4401; decimalLongitude: 124.0869; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2000-07-11; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00006 ; recordedBy: Tadafumi Nakata; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Ishigaki-jima Island; country: Japan; stateProvince: Okinawa; municipality: Ishigaki City; locality: Mt. Yarabu-dake ; decimalLatitude: 24.4401; decimalLongitude: 124.0869; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2000-07-19; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00007 ; recordedBy: Tadafumi Nakata; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Ishigaki-jima Island; country: Japan; stateProvince: Okinawa; municipality: Ishigaki City; locality: Mt. Yarabu-dake ; decimalLatitude: 24.4401; decimalLongitude: 124.0869; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2000-07-19; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00008 ; recordedBy: Tadafumi Nakata; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Ishigaki-jima Island; country: Japan; stateProvince: Okinawa; municipality: Ishigaki City; locality: Mt. Yarabu-dake ; decimalLatitude: 24.4401; decimalLongitude: 124.0869; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2000-07-19; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00009 ; recordedBy: Tadafumi Nakata; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Ishigaki-jima Island; country: Japan; stateProvince: Okinawa; municipality: Ishigaki City; locality: Mt. Yarabu-dake ; decimalLatitude: 24.4401; decimalLongitude: 124.0869; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2000-07-19; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00010 ; recordedBy: Tadafumi Nakata; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Ishigaki-jima Island; country: Japan; stateProvince: Okinawa; municipality: Ishigaki City; locality: Mt. Yarabu-dake ; decimalLatitude: 24.4401; decimalLongitude: 124.0869; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2000-07-19; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00011 ; recordedBy: Tomoyuki Tsuru; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Iriomote-jima Island; country: Japan; stateProvince: Okinawa; municipality: Taketomi Town; locality: Shirahama-rindo ; decimalLatitude: 24.3671; decimalLongitude: 123.7599; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2002-06-12; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00012 ; recordedBy: Seidai Nagashima; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Iriomote-jima Island; country: Japan; stateProvince: Okinawa; municipality: Taketomi Town; locality: Shirahama-rindo ; decimalLatitude: 24.3671; decimalLongitude: 123.7599; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2003-05-30; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00013 ; recordedBy: Seidai Nagashima; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Iriomote-jima Island; country: Japan; stateProvince: Okinawa; municipality: Taketomi Town; locality: Shirahama ; decimalLatitude: 24.363; decimalLongitude: 123.7546; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2003-05-31; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: catalogNumber: 2016-00014 ; recordedBy: Tomoyuki Tsuru; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Iriomote-jima Island; country: Japan; stateProvince: Okinawa; municipality: Taketomi Town; locality: Sonai ; decimalLatitude: 24.3856; decimalLongitude: 123.75; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2005; Event: samplingProtocol: none specified; eventDate: 2003-05-27; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 2016-00015 ; recordedBy: K. Kurihara; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Iriomote-jima Island; country: Japan; stateProvince: Okinawa; municipality: Taketomi Town; locality: Mt. Sonai-dake ; decimalLatitude: 24.3857; decimalLongitude: 123.7523; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 2002-06-18; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 2016-00001 ; recordedBy: Kuki Baba; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Okinawa-honto Island; country: Japan; stateProvince: Okinawa; municipality: Ogimi Village; locality: Kijoka ; decimalLatitude: 26.7043; decimalLongitude: 128.1478; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 2013-06-17; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 2016-00002 ; recordedBy: Takeru Naka; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Okinawa-honto Island; country: Japan; stateProvince: Okinawa; municipality: Ogimi Village; locality: Ogimi ; decimalLatitude: 26.684; decimalLongitude: 128.137; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 2013-07-01; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 2016-00003 ; recordedBy: Takeru Naka; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tiarodesmiyamotoi Ishikawa, Cai and Tomokuni, 2005; namePublishedIn: 2005; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Reduviidae; genus: Tiarodes; specificEpithet: miyamotoi; scientificNameAuthorship: Ishikawa, Cai and Tomokuni; Location: islandGroup: Ryukyu Islands; island: Okinawa-honto Island; country: Japan; stateProvince: Okinawa; municipality: Ogimi Village; locality: Ogimi ; decimalLatitude: 26.684; decimalLongitude: 128.137; geodeticDatum: WGS84; Identification: identifiedBy: Tadashi Ishikawa; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 2013-07-01; Record Level: institutionCode: ELTUA; collectionCode: IC; basisOfRecord: PreservedSpecimen

Intraspecific variation

In this species, a discontinuous geographical variation occurs between the Yaeyama and Okinawa-honto Island populations, the two forms are tentatively called “type-Y” and “type-O”, respectively. These types differ distinctly in coloration, but not in external morphology, including genital structures. The differences between the types are as follows (also see Table 1):

Head red, with irregular black markings in type-Y (Figs 2a, 3a), and blackish, more or less suffused with red on ventral disc, on dorsum of anterior lobe, and on both sides of posterior lobe in type-O (Figs 2c, 3b). Rostral segments I and II reddish with yellowish suffusion in type-Y (Figs 2b, 3a), and blackish in type-O (Figs 2d, 3b). Pronotum black on collar, red on anterior lobe, and dark red on posterior lobe in type-Y (Fig. 2a), and wholly blackish, with reddish suffusion on anterior disc of anterior lobe in type-O (Fig. 2c). Coxae and trochanters red with dark markings in type-Y (Figs 2b, 4a), and black with irregular red to yellow markings in type-O (Figs 2c, 4b). Femora each black on extreme apex in type-Y (Figs 2b, 4a), and black on apical fifth in type-O (Figs 2d, 4b). Large yellow spot of hemelytral corium vivid in type-Y (Fig. 2a), and obscure in type-O (Fig. 2c). Abdominal sternites III to VII reddish, darkened along anterior margin in type-Y (Fig. 2b), and entirely reddish in type-O (Fig. 2d). Abdominal laterotergites III to VI entirely red in type-Y (Fig. 2a, b), and red with anterior corner of each segment black in type-O (Fig. 2c, d). Abdominal laterotergite VII red in type-Y (Figs 2a, b, 5a), and black in type-O (Figs 2c, d, 5b). Male genital segments yellowish with irregular obscure markings in type-Y (Figs 2b, 5a), and entirely black in type-O (Figs 2d, 5b).

Improved diagnosis

Ishikawa et al. (2005) provided a diagnosis of T. miyamotoi in its original description. However, the intraspecific variation confirmed in this study makes the diagnosis revised. Therefore, this species is re-diagnosed as follow:

Tiarodes miyamotoi is recognized by the following combination of characters: body 15-20 mm long; head a little longer than pronotum; pronotal collar well developed and distinctly projecting on both sides; humeral width 1.2 times as long as pronotum in the midline; mesosternum without median sulcus; meso- and metasterna without median carina; hemelytral corium with one large, vivid to obscure yellow spot; venter of abdomen mostly generally reddish; abdominal laterotergite II blackish; parameres longitudinally carinate ventrally in apical half.

Distribution

Japan: the Ryukyu Islands [Okinawa-honto Island, the Yaeyama Islands (Ishigaki-jima Island and Iriomote-jima Island)]. This species was first recorded from Okinawa-honto Island.