Coelophthinia itoae Kurina, 2023

Kjaerandsen, Jostein, Kerr, Peter H., Lindemann, Jon Peder & Kurina, Olavi, 2023, When details matter: Integrative revision of Holarctic Coelophthinia Edwards (Diptera, Mycetophilidae), including mapping of its mitogenome, leads to the description of four new pseudocryptic species, Biodiversity Data Journal 11, pp. 98741-98741 : 98741

Coelophthinia itoae Kurina sp. n.

Materials

Type status: Holotype. Occurrence: catalogNumber: IZBE0251605 ; recordedBy: Olavi Kurina; individualCount: 1; sex: male; preparations: slide mounted in Euparal ; terminalia in glycerine in separate microvial; occurrenceID: ECFA61EE-9402-54B6-923C-ED7DAEB0CC79; Taxon : scientificName: Coelophthinia itoae; order: Diptera ; family: Mycetophilidae ; genus: Coelophthinia ; specificEpithet: itoae; scientificNameAuthorship: Kurina ; Location : country: Japan; stateProvince: HOKKAIDO: Hokkaido Prefecture; county: Kushiro-shi ; municipality: Kushiro-shi ; locality: Upper reach of Ibeshibetsu river , nearLake Akan , Akan-cho ; verbatimElevation: 448 m; decimalLatitude: 43.4891; decimalLongitude: 144.1477; Identification : identifiedBy: Olavi Kurina ; Event : samplingProtocol: sweep net; eventDate: 2006-10-03; Record Level: basisOfRecord: Preserved specimen Type status: Paratype. Occurrence: catalogNumber: IZBE0251606 ; recordedBy: Olavi Kurina; individualCount: 1; sex: male; preparations: slide mounted in Euparal ; terminalia in glycerine in separate microvial; occurrenceID: 47CE4ED8-BB2B-5256-962C-8E9F8204E75B; Taxon : scientificName: Coelophthinia itoae; order: Diptera ; family: Mycetophilidae ; genus: Coelophthinia ; specificEpithet: itoae; scientificNameAuthorship: Kurina ; Location : country: Japan; stateProvince: HOKKAIDO: Hokkaido Prefecture; municipality: Kushiro-shi ; locality: Upper reach of Ibeshibetsu river , nearLake Akan , Akan-cho ; verbatimElevation: 448 m; decimalLatitude: 43.4891; decimalLongitude: 144.1477; Identification : identifiedBy: Olavi Kurina ; Event : samplingProtocol: sweep net; eventDate: 2006-10-03; Record Level: basisOfRecord: Preserved specimen Type status: Paratype. Occurrence: catalogNumber: IZBE0251607 & TSZD-JKJ-106937 (BOLD voucher) ; recordedBy: Olavi Kurina; individualCount: 1; sex: female; preparations: pinned, mounted from ethanol; terminalia in glycerine in separate microvial; occurrenceID: 850DA64F-51D7-502C-AE32-0BD4FEAD130B; Taxon : scientificName: Coelophthinia itoae; order: Diptera ; family: Mycetophilidae ; genus: Coelophthinia ; specificEpithet: itoae; scientificNameAuthorship: Kurina ; Location : country: Japan; stateProvince: HOKKAIDO: Hokkaido Prefecture; municipality: Kushiro-shi ; locality: Lower reach of Ibeshibetsu river , near Lake Akan , Akan-cho ; verbatimElevation: 448 m; decimalLatitude: 43.4808; decimalLongitude: 144.1277; Identification : identifiedBy: Olavi Kurina ; Event : samplingProtocol: sweep net; eventDate: 2006-10-04; Record Level: basisOfRecord: Preserved specimen Type status: Paratype. Occurrence: catalogNumber: TSZD-JKJ-102075 ; recordedBy: J. Kjærandsen; individualCount: 1; sex: male; lifeStage: adult; preparations: Pinned (HMDS-dried from ethanol); associatedOccurrences: urn:uuid:b26051ad-2aad-49f6-97b4-02f1d7836785; occurrenceID: 0FB19303-C857-5587-B6D7-6CB8E3F0826E; Taxon: scientificName: Coelophthinia itoae; order: Diptera ; family: Mycetophilidae ; genus: Coelophthinia ; specificEpithet: itoae; scientificNameAuthorship: Kurina ; Location : country: Japan; stateProvince: HOKKAIDO: Hokkaido Prefecture; municipality: Chitose-shi ; locality: Bifue-gawa at Bifue-no-taki falls ; minimumElevationInMeters: 375; decimalLatitude: 42.72694; decimalLongitude: 141.19222; coordinateUncertaintyInMeters: 100; Identification: identifiedBy: J. Kjærandsen; dateIdentified: Sep-22-2007; Event: samplingProtocol: sweep net; eventDate: 2006-10-02; Record Level: institutionCode: TSZ; collectionCode: COL-003263 Type status: Paratype. Occurrence: catalogNumber: TSZD-JKJ-111450 ; recordedBy: J. Kjærandsen; individualCount: 1; sex: female; lifeStage: adult; preparations: Pinned (HMDS-dried from ethanol); associatedOccurrences: urn:uuid:496836f0-e75d-4b59-99fa-36c44f47ec12; occurrenceID: 10142870-BF28-555F-9B5A-02B6395959C3; Taxon: scientificName: Coelophthinia itoae; order: Diptera ; family: Mycetophilidae ; genus: Coelophthinia ; specificEpithet: itoae; scientificNameAuthorship: Kurina ; Location : country: Japan; stateProvince: HOKKAIDO: Hokkaido Prefecture; municipality: Kushiro-shi ; locality: Middle-lower reach of Ibeshibetsu River near Lake Akan , Akan-cho ; minimumElevationInMeters: 427; decimalLatitude: 43.48083; decimalLongitude: 144.13917; coordinateUncertaintyInMeters: 250; Identification: identifiedBy: J. Kjærandsen; dateIdentified: Sep-25-2020; Event: samplingProtocol: sweep net; eventDate: 2006-10-04; eventRemarks: Site 2; Record Level: institutionCode: TSZ - BOLD voucher; collectionCode: COL-003271 Type status: Other material. Occurrence: catalogNumber: TSZD-JKJ-111497 ; recordedBy: J. Kjærandsen; individualCount: 1; sex: female; lifeStage: adult; preparations: 80% alc.; associatedOccurrences: urn:uuid:c2186363-d6ce-4fb3-a92f-5d3fb9c49ce5; occurrenceID: 939DC69F-ABCF-56B7-B4DB-649FCA9933B7; Taxon: scientificName: Coelophthinia itoae; order: Diptera ; family: Mycetophilidae ; genus: Coelophthinia ; specificEpithet: itoae; scientificNameAuthorship: Kurina ; Location : country: Japan; stateProvince: HOKKAIDO: Hokkaido Prefecture; municipality: Kushiro-shi ; locality: Middle-lower reach of Ibeshibetsu River near Lake Akan , Akan-cho ; minimumElevationInMeters: 427; decimalLatitude: 43.48083; decimalLongitude: 144.13917; coordinateUncertaintyInMeters: 250; Identification: identifiedBy: J. Kjærandsen; dateIdentified: Sep-11-2020; Event: samplingProtocol: sweep net; eventDate: 2006-10-04; eventRemarks: Site 2; Record Level: institutionCode: TSZ; collectionCode: COL-003271

Description

Male. (Figs 9, 10 )

Coloration and most body characteristics as in the genus description. Body length 3.2 mm. Wing length 2.70-2.77 mm; ratio of length to width 1.9-2.5. Sensory organ dorsally on the basal half of mid-tibia elongate oval, 6.7 times longer than wide, length 0.34 that of tibial length.

Terminalia. Tergite 9 rectangular in dorsal view, about 1.25 times as long as wide, curved like a hood in lateral view. Medial protrusion of tergite 10 remarkably long, height approximately 4-5x width in posterior view, curved posteriad, densely setose. Gonocoxites in lateral view with a rounded outline, with slightly convex ventral margin. Posterolateral lobe of gonocoxite short and wide, only somewhat longer than wide, truncated apically, laterally bare for about 1.5x apical width. Spathulate gonocoxal lobe about 3 times as long as wide, curved slightly medially, without constricted base, basad of base with a group of 3-4 longer setae. Dorsal branch small, simple, wider than long, apically rounded, dorsally setose, with one extra long seta deviating from others. The broad lobe 1 (cf. Fig. 9 d) transversally extended, carrying 6 blunt setae along rim and 5 normal very long setae subapically on inner side. The narrow, acute tipped lobe 2 (cf. Fig. 9 d) tapering, with strong, blunt seta placed subapically; with one short and one very long seta in mid-section. Aedeagus 1.5x longer than spathulate gonocoxal lobe in lateral view, with swelling medially; apically narrowed into downcurved hook; apically with a spike at the outer side at the curving point; downcurved hook about three times of width of aedeagus basally.

Female. (Fig. 11)

Coloration as for male. Sensory organ dorsally on the basal half of mid-tibia elongate oval, 9.2 times longer than wide, length 0.32 that of tibial length.

Terminalia as described for genus. Tergite 8 short, posteriorly emarginated in dorsal view, bare. Tergite 9 short, posteriorly emarginated in dorsal view, bare, except posterior margin with row of 7-8 long setae, which are longer than those on cercus. Cercus about two times as long as wide medially, evenly covered with setae. Sternite 8 longer than tergites 8 and 9 together, posterolaterally rounded, posterior half setose, in ventral view hypogynal valves separated by V-shaped deep incision, about one-third as deep as segment length. Gonapophysis 8 elongate, about 8 times as long as wide, extending to mid-cercus, setose, with one deviating strong subapical seta.

Diagnosis

Coelophthinia itoae can be distinguished from other species of the genus by the combination of having a rounded shape of the gonocoxite as seen in lateral view, with a slightly convex ventral margin, a short and wide posterolateral lobe and a long and posteriad curved medial protrusion of tergite 10. The ventral branch of the gonostylus with broad lobe transversally extended. The aedeagus is uniquely shaped, short, with delimited swelling medially and with apical hook about three times longer than the width of the base of aedeagus. The length of the mid-tibial organ is about 0.3 of tibial length.

Etymology

Named after Tomiko Ito, who kindly guided JK and OK on a collecting trip around Hokkaidō, Japan, in 2006, when this species was collected and discovered.

Distribution

Eastern Palaearctic: Japan (Hokkaidō, Honshū).

Figures

Figure 10. Coelophthinia itoae sp. n., habitus (IZBE 0251605: Akan-cho, Japan).