Calolydella bifissus Fleming & Wood

Fleming, AJ, Wood, D. Monty, Smith, M. Alex, Hallwachs, Winnie & Janzen, Daniel H, 2018, Revision of the Mesoamerican species of Calolydella Townsend (Diptera: Tachinidae) and description of twenty-three new species reared from caterpillars in Area de Conservacion Guanacaste, northwestern Costa Rica, Biodiversity Data Journal 6, pp. 11223-11223 : 11223

Calolydella bifissus Fleming & Wood sp. n.

Materials

Type status: Holotype. Occurrence: occurrenceDetails: http://janzen.sas.upenn.edu; catalogNumber: DHJPAR0017132 ; recordedBy: D.H. Janzen, W. Hallwachs & Jose Perez; individualID: DHJPAR0017132; individualCount: 1; sex: M; lifeStage: adult; preparations: pinned; otherCatalogNumbers: 07-SRNP-40315, BOLD:AAA1939, ASTAP570-07; Taxon: scientificName: Calolydellabifissus; phylum: Arthropoda; class: Insecta; order: Diptera; family: Tachinidae; genus: Calolydella; specificEpithet: bifissus; scientificNameAuthorship: Fleming & Wood, 2016; Location: continent: Central America; country: Costa Rica; countryCode: CR; stateProvince: Alajuela; county: Sector Rincon Rain Forest; locality: Area de Conservacion Guanacaste ; verbatimLocality: Rio Francia Arriba; verbatimElevation: 400; verbatimLatitude: 10.8967; verbatimLongitude: -85.29; verbatimCoordinateSystem: Decimal; Identification: identifiedBy: AJ Fleming; dateIdentified: 2016; Event: samplingProtocol: Reared from the larva of the nymphalidae butterfly, Dircenna klugii; verbatimEventDate: 20-Feb-2007; Record Level: language: en; institutionCode: CNC; collectionCode: Insects; basisOfRecord: Pinned Specimen Type status: Paratype. Occurrence: occurrenceDetails: http://janzen.sas.upenn.edu; catalogNumber: DHJPAR0036636 ; recordedBy: D.H. Janzen, W. Hallwachs & Manuel Pereira; individualID: DHJPAR0036636; individualCount: 1; sex: M; lifeStage: adult; preparations: pinned; otherCatalogNumbers: 09-SRNP-36303, BOLD:AAA1939, ASHYE1547-09; Taxon: scientificName: Calolydellabifissus; phylum: Arthropoda; class: Insecta; order: Diptera; family: Tachinidae; genus: Calolydella; specificEpithet: bifissus; scientificNameAuthorship: Fleming & Wood, 2016; Location: continent: Central America; country: Costa Rica; countryCode: CR; stateProvince: Guanacaste; county: Sector Cacao; locality: Area de Conservacion Guanacaste ; verbatimLocality: Estacion Cacao; verbatimElevation: 1150; verbatimLatitude: 10.9269; verbatimLongitude: -85.4682; verbatimCoordinateSystem: Decimal; Identification: identifiedBy: AJ Fleming; dateIdentified: 2016; Event: samplingProtocol: Reared from the larva of the geometridae moth, Phyllodontalatrata; verbatimEventDate: 19-Jul-2009; Record Level: language: en; institutionCode: CNC; collectionCode: Insects; basisOfRecord: Pinned Specimen Type status: Paratype. Occurrence: occurrenceDetails: http://janzen.sas.upenn.edu; catalogNumber: 07-SRNP-40315 ; recordedBy: D.H. Janzen, W. Hallwachs & Jose Perez; individualCount: 2, siblings of holotype; sex: 1M, 1F; lifeStage: adult; preparations: pinned; otherCatalogNumbers: 07-SRNP-40315; Taxon: scientificName: Calolydellabifissus; phylum: Arthropoda; class: Insecta; order: Diptera; family: Tachinidae; genus: Calolydella; specificEpithet: bifissus; scientificNameAuthorship: Fleming & Wood, 2016; Location: continent: Central America; country: Costa Rica; countryCode: CR; stateProvince: Alajuela; county: Sector Rincon Rain Forest; locality: Area de Conservacion Guanacaste ; verbatimLocality: Rio Francia Arriba; verbatimElevation: 400; verbatimLatitude: 10.8967; verbatimLongitude: -85.29; verbatimCoordinateSystem: Decimal; Identification: identifiedBy: AJ Fleming; dateIdentified: 2016; Event: samplingProtocol: Reared from the larva of the nymphalidae butterfly, Dircenna klugii; verbatimEventDate: 20-Feb-2007; Record Level: language: en; institutionCode: CNC; collectionCode: Insects; basisOfRecord: Pinned Specimens

Description

Male (Fig. 7a, b, c). Length: 5-6mm. Head (Fig. 7b): frontal setae extending to base of postpedicel; frontal vitta tapering apically; fronto-orbital plate gold throughout, with a single row of fine setulae outside of frontal setae; parafacial at least 50% silver pollinose. Thorax (Fig. 7a, c): gold on dorsal surface, silver laterally (>50% coverage); vittae fused into two prominent dark stripes; postpronotum with two setae (inner basal seta absent); 1:3 acrostichal setae; 2:2 dorsocentral setae; 1:3 intra-alar setae; 1:3 supra-alar setae; three katepisternal setae; anatergite with three or more hair-like setae, often in a small tuft; scutellar discal setae situated slightly closer together than subapical scutellar setae. Wing vein R4+5 with at most 2-3 setulae dorsally at base, not extending to crossvein R-M. Abdomen (Fig. 7a): ground color dark brown-orange with uninterrupted transverse marginal pollinose bands; pollinosity gold dorsally, silver ventrally, with an orange spot lateroventrally at base of ST1+2; T3 with one pair of median marginal setae and one pair of discal setae; T4 with one pair of discal setae. Terminalia (Fig. 8): sternite 5 (Fig. 8c) with a wide U-shaped median cleft, 0.46X the length of the sternite from lobe to apex; each lobe with a smaller protrusion along upper margin of median cleft; inner margin covered by light pollinosity, appearing slightly darker than surrounding cuticle; lobe of sternite entirely covered with short setae, of varying lengths. Cerci with a fused base and cleft apex, slightly pinched at center (Fig. 8b); cercus, in lateral view, broad and with a slight downward bend. Surstylus digitiform and straight (Fig. 8a), appearing subequal to length of cercus when viewed laterally; surstylus with short setae along entire length; tip of surstylus appearing curved inwards when viewed dorsally.

Female (Fig. 7d, e, f). Length: 5mm. As male, except for the following characters: fronto-orbital plate 3X as wide as in male; frontal vitta not tapered, apically 1.2X as wide as in male; two katepisternal setae.

Diagnosis

Calolydella bifissus can be distinguished from all other species of Calolydella by the following combination of characters: two bold thoracic vittae, abdominal pollinosity concolorous on both dorsal and ventral surfaces, anatergite with a small tuft of hair-like setae, and abdominal ground color dark brown-orange.

Etymology

The specific epithet is derived from the Latin adjective " bifissus ", meaning cleft or cloven, in reference to cleft nature of the cerci, which are fused basally, a character state unique to this species.

Distribution

Costa Rica, ACG, Alajuela and Guanacaste provinces, 400-1150m.

Ecology

Calolydella bifissus has been reared twice, from two separate hosts, Dircenna kluggii (Geyer, 1837) ( Lepidoptera : Nymphalidae ) and Phyllodonta latrata ( Guenée, 1857) ( Lepidoptera : Geometridae ), in rain forest and cloud forest ecosystems.