Syneches fuscescens Bezzi

Menezes, Isis Sá & Ale-Rocha, Rosaly, 2016, Revision of the Amazonian species of Syneches Walker (Diptera, Hybotidae, Hybotinae), Zootaxa 4103 (5), pp. 401-442 : 419-420

publication ID

https://doi.org/ 10.11646/zootaxa.4103.5.1

publication LSID

lsid:zoobank.org:pub:4511286D-451E-4C2B-9CE3-5D7621E7DEDF

DOI

https://doi.org/10.5281/zenodo.6088590

persistent identifier

https://treatment.plazi.org/id/03CD87D9-9E3B-3A3C-6DCB-2CEAFB9454AF

treatment provided by

Plazi

scientific name

Syneches fuscescens Bezzi
status

 

Syneches fuscescens Bezzi View in CoL

( Figs 54–58 View FIGURES 54 – 58 , 119 View FIGURE 119 )

Syneches fuscescens Bezzi, 1909: 319 View in CoL . Collin, 1933: 28 (citation); Smith, 1967: 10 (catalog); Rafael & Ale-Rocha, 1995: 535 (revision); Yang et al., 2007: 309 (catalog).

Diagnosis. Large size (about 7.0 mm) with antenna, buccal pieces, thorax, abdomen and legs brown to dark brown. Postpedicel ovate, small, equal to length of scape and pedicel combined. Palpus distinctly bristly. Prosternum narrow. Scutum reasonably high, smaller than the height of mesopleuron; postpronotal lobe and postalar callus yellow; scutellum with yellow margins and five pairs of strong setae intercalated with small setae. Abdomen with long and abundant, yellow lateral setae. Fore femur swollen; mid tibia with AD, PD and P rows of robust setae on apical 2/3; hind femur with some few small but distinct AV setae. Wing sub-hyaline, brownish, with light infuscation from costal region to apex; pterostigma long and slender, brown, not filling up the apex of cell r1; apex of cell r1 narrow.

Description of male. Similar to female, except as follow: scutum with reddish brown pruinescence anteriorly, yellowish-gray pruinescence forming narrow dorsocentral stripe and covering prescutellar disc and scutellum. Pleura completely brown with pale golden pruinescence. Abdomen about 2.5 times length of thorax. Tergite 8 small, 2.2 times wider than long, posterior margin of sclerotized portion shallowly concave medially forming two small lobes, setae long and strong on sides ( Fig. 57 View FIGURES 54 – 58 ); sternite 8 trapezoidal with apical long setae ( Fig. 58 View FIGURES 54 – 58 ). Terminalia: elongate; hypandrium elongate, narrowed towards apex, with two sclerotized lobes apically, two rows of moderately long setae on central portion of distal half ( Fig. 55 View FIGURES 54 – 58 ); epandrial lamella wide, with long strong setae ( Figs 54–56 View FIGURES 54 – 58 ); phallus slender, slightly sharpened apically, with small sclerotized lateral protuberance; postgonite broadened basally with slender apical half, shorter than phallus ( Fig. 55 View FIGURES 54 – 58 ).

Examined material. BOLIVIA. La Paz; Nor Yungas, btw., Alcoche & Teoponte, 38 km, SW of Guanay, GPS 15°33′33.9″ S 67°44′ 04.5″W, 12.iv.2001, *Restrictions Apply, *USNM—Bolivia CBF, *Agreement 38 ( USMN). ECUADOR. Past. Puyo (25 kmN), 10.vii.1976, Sweeping, J. Cohen (1 ♀, USMN). PERU. Iquitos, iii.27.23, F 606v, H. Basster, Ac. 33591, Syneches fuscescens, Det. Ale-Rocha, 1999 (1 ♂, INPA).

Geographical distribution. Bolivia, Ecuador * and Peru * ( Fig. 119 View FIGURE 119 ).

Comments. This species is similar to S. amazonicus sp. nov. in having the scutum reasonably high, elongate legs, femora slightly dilated and pterostigma elongate, but can be differentiated from it by legs brown to dark brown. The male terminalia of Syneches fuscescens resemble that of S. dichrous , but differs from it by small apical split forming two sclerotized lobes on posterior margin of hypandrium and slender phallus with sharpened apex. The association was made by comparing with female specimens compared with the type.

CBF

Coleccion Boliviana de Fauna

INPA

Instituto Nacional de Pesquisas da Amazonia

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Hybotidae

Genus

Syneches

Loc

Syneches fuscescens Bezzi

Menezes, Isis Sá & Ale-Rocha, Rosaly 2016
2016
Loc

Syneches fuscescens

Rafael 1995: 535
Smith 1967: 10
Collin 1933: 28
Bezzi 1909: 319
1909
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