Calythea Schnabl & Dziedzicki

Gomes, Lucas Roberto Pereira & Carvalho, Claudio José Barros de, 2022, Taxonomy of the Neotropical species of Calythea (Anthomyiidae: Diptera), with description of two new species from South America, Revista Brasileira de Entomologia (e 20210102) 66 (1), pp. 1-11 : 2-3

publication ID

https://doi.org/ 10.1590/1806-9665-RBENT-2021-0102

DOI

https://doi.org/10.5281/zenodo.8111409

persistent identifier

https://treatment.plazi.org/id/4C5687B4-FF9B-FF80-E543-E863FA4BF99B

treatment provided by

Felipe

scientific name

Calythea Schnabl & Dziedzicki
status

 

Calythea Schnabl & Dziedzicki View in CoL

Calythea micropteryx View in CoL species group

Diagnosis. Male holoptic. Body black in general color, bright silvery grey-dusting pruinosity on thorax and abdomen ( Figs. 1-3 View Figure 1 View Figure 2 View Figure 3 ). Frontal vitta, antenna and palp black. Gena and parafacialia black with silvery pruinosity ( Figs. 1a View Figure 1 , 2a, d View Figure 2 , 3a, d, g View Figure 3 ). Anepimeron, anepisternum, and meron black, silvery pruinose ( Figs. 2c, f View Figure 2 ). Prescutellar region, and postalar callus pruinose. Scutellum apically pruinose. Apical scutellar setae longer than basal and discal scutellar setae. Abdomen with 3 subtriangular dark spots basally connected on each abdominal tergite ( Fig. 3c View Figure 3 ). Arista short pubescent. Presence of a keel on face, between antennae. Prosternum and katepimeron setulose. Meron bare or posteriorly setulose below spiracle. Katepisternum 1+2, covered by many long setae, including a differentiated seta discernible below the two posteriors one. Apex of scutellum ventrally setulose. Prealar short or absent. 1 supra-alars. 2 intra-alars. 2 postalars. Wing hyaline. Lower calypter 1.5 times larger than upper one. Fore tibia with one a seta. Hind tibia with 1 av (submedian), 2 ad (supramedian and submedian), 1 d (preapical), and a long pd (submedian) seta. Pulville small, similar to tarsomere width. Subcostal vein evenly bowed towards the Costal vein, without any sinuosity. Vein dm-m straight. Palpi claviform. Sternite 1 setulose. Sternite 5 with a serrated edge on its posterior incision ( Figs.4a, e, i, m, q View Figure 4 ). Cerci triangular on posterior view ( Figs. 4b, f, j, n, r View Figure 4 ). Pregonite with two long setae, postgonite with a median long seta and distiphallus very large and rounded ( Figs. 4d, h, l, p, t View Figure 4 ). Female: Dichoptic; body dark brown, palpi claviform, twice enlarged than male; interfrontal setae present. Thorax with 3-5 longitudinal stripes. Katepisternum 1+2, without several long covered setae. Pulville smaller, about half of tarsomere width. Epiproct as long as its wide, tergite 6 and 7 T-shaped dorsally ( Figs. 5b, e, h, k View Figure 5 ). Hypoproct longer than wide, sternite 6 and 7 trapezoid ( Figs. 5c, f, i, l View Figure 5 ). Three spermathecae, one smaller with about half diameter of the others.

Identification key to the males of Calythea Schnabl & Dziedzicki species from Neotropical Region

The Palaearctic species C. nigricans Robineau-Desvoidy, 1830 was erroneously recorded from Neotropical Region ( Pont, 1974), and C. monticola Bigot, 1885 occurs in the Nearctic Region of Mexico and United States ( Griffiths, 1987). Both species were not included in the key. The species C. costana Séguy, 1934 is only known from its type-locality in Uruguay, this species probably is not an Anthomyiidae ,

due to male terminalia and dorsocentrals setae 2+4, and also was not included in the key.

1. Eyes setulose; thorax without pruinose near transversal suture ( Fig. 3e View Figure 3 ); hind tibia with a pd seta 4 times longer than tibia width ...................................................................... C. crenata Bigot, 1885 View in CoL

- Eyes bare; thorax with pruinose near transversal suture ( Fig. 1b View Figure 1 , 2b View Figure 2 , 3b, 3h View Figure 3 ); hind tibia with a pd seta 2-3 times longer than tibia width ….................................................................. 2

2 (1). Face not projecting beyond frontal angle …......................... 3

- Face projecting beyond frontal angle…..................................4

3 (2). Palpi enlarged; frons with fronto-orbital plates separated by frontal vitta ( Fig. 3a View Figure 3 ); anterior anepisternal seta twice longer than covered cilia; thorax pruinose from transversal suture, with a forward projection, reaching the anterior dorsocentral presutural seta ( Fig. 3b View Figure 3 ) …........................................ C. comis Stein, 1911 View in CoL

- Palpi slightly enlarged; frons at narrowest point with contiguous fronto-orbital plates ( Fig. 3g View Figure 3 ); anterior anepisternal seta slightly longer than covered cilia; thorax pruinose from transversal suture, without forward projection, reaching anterior dorsocentral presutural seta ( Fig. 3h View Figure 3 ) …...................... .............................................. C. micropteryx (Thomson, 1869) View in CoL

4 (2). Margin of calypters brownish; setulae on sternite 1 twice longer than length of sternite; postgonite distally not bilobate ( Fig. 4d View Figure 4 ) …............................................... C. andina View in CoL new species

- Margin of calypters whitish; setulae on sternite 1 slightly longer than length of sternite; postgonite distally bilobate ( Fig. 4h View Figure 4 ) …................................... C. cochlearis View in CoL new species

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Anthomyiidae

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