Chaetopodella ornata, Hayashi & Papp, 2007

Hayashi, T. & Papp, L., 2007, Oriental Species Of Chaetopodella Duda (Diptera: Sphaeroceridae), Acta Zoologica Academiae Scientiarum Hungaricae 53 (2), pp. 117-130 : 128-130

publication ID	https://doi.org/ 10.5281/zenodo.12585561
persistent identifier	https://treatment.plazi.org/id/03A387C5-FFD4-6C48-D15D-5AACFF23FCB1
treatment provided by	Felipe
scientific name	Chaetopodella ornata
status	sp. nov.

Treatment

Chaetopodella ornata View in CoL sp. n.

( Figs 21–24 View Figs 18–24 )

Holotype male ( NIID): NEPAL: Sarangkot , Pokhara, Nepal, Oct. 21–22, 1992, T. Hayashi – Buffalo dung.

Paratypes. NEPAL: 3 males, 9 females, same data as holotype ( NIID, 2 males, 2 females in HNHM) [genitalia of one male and female each in a plastic microvial with glycerol] ; 1 male, 1 female, Phedi (nr. Pokhara), Oct. 19, 1992, T . Hayashi ( NIID) ; 1 male, 2 females, Phedi (nr. Pokhara), Oct. 24, 1992, T . Hayashi ( NIID) ; 1 male, Potana to Dampus, Aug. 1, 1990, K. Kanmiya ( NIID) .

Measurements in mm: body length 1.9 (holotype), 1.52–1.60 (paratype males), 1.87–2.1 (paratype females), wing length 1.8 (holotype), 1.67–1.73 (paratype males), 1.79–2.1 (paratype females), wing width 0.70 (holotype), 0.68–0.70 (paratype males), 0.85–0.88 (paratype females).

Head: Mostly blackish brown, heavily microtrichose, silvery spots around bases of macrochaetae; frons with reddish brown areas between ifr and ors setae and a silvery sagittal line on central part of frontal vitta; gena yellowish brown, lunule and face dark brown; gena without special modification of minute setae near posterior end, 3 weak ifr; anterior ors about as long as 1/2 length of posterior ors; eye oval, its longest diameter about 2.7 times as long as smallest genal width; antenna dark brown, about 3.0 times as long as antenna, shortly ciliate.

Thorax: Mostly deep velvety black; 6 rows of ac microsetae in front of suture, 3 strong dc; broad light yellowish stripe through postpronotum, notopleura and supra-alar area; 2 kepst, anterior very weak; scutellum velvety black, somewhat wider than long; 2 sc long, apical one about 1.8 and lateral one about 1.0 times as long as scutellum.

Wing: Slighly yellowish, veins yellowish brown; C somewhat darker, not extended beyond apex of R4+5, first sector with a little stronger setae than those of second and third sectors; R4+5 gently bent up to C; C-index = 1.50–1.80; R-M – dM-Cu: dM-Cu = about 2.5; alula broad and rounded; halter reddish brown to dark brown.

Legs: Dark brown to black. Male fore femur and tibia thickened, tibia with anterior incision on apical 1/3, fore tarsus swollen but not flattened, without long dense lateral setae. Fore femora with a dorsal seta on basal 2/3; mid femur with a ventral row of 4 setae on basal 1/ 5 in male; t 2 chaetotaxy as in that of Ch. latitarsis .

Abdomen: Male sternite 4 large, as long as broad (0.26 mm). Male sternite 5 ( Fig. 21 View Figs 18–24 ) comparatively long (in the direction of the body axis). Processes asymmetrical with several, comparatively short but thick thorns.

Male terminalia ( Figs 21–24 View Figs 18–24 ) small. Epandrial pair of setae 0.19 mm long. Surstylus ( Figs 23–24 View Figs 18–24 ) with a smaller subbasal process, which bears 4–5 long setae, its medial (basal) part continued widely also below epandrium. Postgonite ( Fig. 22 View Figs 18–24 ) with a subapical, lateral, broad based ridge (cf. Fig. 11 View Figs 8–12 for Ch. latitarsis ) and with a rather sharp apex (structurally similar to that of Ch. latitarsis ). Phallapodeme similar to that of Ch. latitarsis .

Female cerci short, cercal setae short, even the longest ones not much longer than 0.10 mm.

Etymology. The specific epithet ‘ornata’ (Latin: “decorated”) refers to the beautiful coloration of its body.

In the World Catalogue of Sphaeroceridae ( ROHÁČEK et al. 2001) a complete bibliography for the taxonomy and nomenclature of the genus was given.

KEY TO THE PALAEARCTIC AND ORIENTAL SPECIES OF CHAETOPODELLA DUDA View in CoL

1 (2) Fronto-orbital setae subequal in size. Three pairs of long and thick ifr. Thorax unicolorous, without light stripes or silvery spots around bases of macrochaetae. Frons more than 1 1/2 long as broad. A widespread Palaearctic species from England to Japan and the Russian Far East. Ch. scutellaris (HALIDAY) View in CoL

2 (1) Anterior fronto-orbital setae much shorter and thinner than posterior pair. Two to four pairs of thin and short ifr. Thorax with light stripes or at least silvery spots present around bases of macrochaetae. Frons less than 1/2 long as broad.

3 (6) Larger species, wing length about 2.5 mm. Male fore leg modified.

4 (5) Male fore tibia much thickened, fore tibia baseball bat shaped. Male fore tarsus swollen but not flattened. Frons with a silvery sagittal line to lunule. Gena without special modification of minute setae near posterior end. A pair of broad light stripe through postpronotum, notopleura and supra-alar area, mesonotum otherwise deep velvety black. Nepal Ch. ornata sp. n.

5 (4) Male fore tibia somewhat swollen. Male fore tarsus flattened, fore tarsomeres with long dense lateral setae. Female fore tarsomeres less flattened but distinctly so. Frons with silvery ocellar triangle, its apex not reaching lunule. Gena with a batch of dark minute setae directed downwards near posterior end. Notopleura yellowish. Mesonotum with broad, densely and less densely grey microtrichose stripes. Thailand and Viet Nam Ch. latitarsis sp. n.

6 (3) Smaller species, wing length less than 2.0 mm. Fore tarsomeres not flattened or only indistinctly so. Notopleura concolorous with mesonotum, or, thorax with a broad light stripe over postpronotum, notopleura and wing base. Two widespread Oriental species.

7 (8) Thorax with a broad light yellowish stripe over postpronotum, notopleura and wing base. Mesonotum with lighter stripes, frons reddish to orange anteriorly between orbital and interfrontal plates, or even sagittally. Silvery spots around bases of mesonotal macrochaetae small. Face light. Two katepisternals, both weak. Male mid tibia without a ventral seta on basal 1/2. Wing greyish, brownish, veins light brown. Female abdominal setae small Ch. orientalis sp. n.

8 (7) Thorax and frons unicolorous dark. Silvery spots around bases of mesonotal macrochaetae large. Face dark. Posterior katepisternal seta much stronger than anterior. Male mid tibia with a strong ventral seta on basal 1/2. Wing membrane, and even posterior veins, milky. Female abdomen with extremely long lateral marginal setae on tergites 5–7. Ch. nigrinotum sp. n.

Acknowledgements – This study was partly supported by the Grant-in-Aid for Monbusho International Scientific Research Program (Field Research) to Tokyo Medical and Dental University in 1992 (Grant No. 04041043) and to Toyama Medical and Pharmaceutical University in 1988 (Grant No. 63941058), KAKENHI 17405011 (Principal investigator: M. OHARA), and by the National Scientific Research Fund (OTKA, No. T 042540 and K 060593 to L. PAPP). We are grateful to the two reviewers for advice.