Homoneura biumbrata (Loew 1873), Loew, 1873

Semelbauer, Marek & Kozánek, Milan, 2014, The immatures of lauxaniid flies (Diptera: Lauxaniidae) and their taxonomical implications, Zootaxa 3780 (3), pp. 401-454: 410

publication ID

http://dx.doi.org/10.11646/zootaxa.3780.3.1

publication LSID

lsid:zoobank.org:pub:170F4E3F-847E-48F7-AF68-AA0E4BC7936A

persistent identifier

http://treatment.plazi.org/id/501F0803-ED03-2E37-FF53-FF71FF71264C

treatment provided by

Plazi

scientific name

Homoneura biumbrata (Loew 1873)
status

 

Homoneura biumbrata (Loew 1873)  

Living larvae only moderately dorsoventrally flattened, the distal parts of Malpighian tubules expanded.

Egg ( Figs 3–5 View FIGURES 1 – 8 ). Length 0.77–0.79 mm. Scaphoid from lateral view, dorsal side with 4–5 marked ridges, ventral side with ridges suppressed but more numerous. The chorion perforated. Posterior tubercle prominent and asymmetrical from lateral view.

First instar ( Figs 39, 40 View FIGURES 39 – 44 ). Length 1.60–1.83 mm. Medially to the mouth hooks flat rounded outgrowths present. The peristomal cirri rather stout. The ventral organ flatwith three digitiform outgrowths.

Cephaloskeleton ( Fig. 163 View FIGURES 162 – 167 ). Length 021– 0.25 mm. The mouth hooks with three strong apical teeth; basal part sclerotised, the dental sclerites indistinguishable.

Second instar ( Figs 41 View FIGURES 39 – 44 ). Length 1.89–3.27 mm. Facial mask relatively narrow (12 scraping cirri per row). The peristomal cirri rather stout and few in numbers. The lateral of abdominal segments covered by bumps.

Cephaloskeleton ( Fig. 178 View FIGURES 177 – 182 ). Length 0.35–0.38 mm. Mouth hooks converging, 2 apical teeth. Intermediate sclerite strong, ventral bridge narrow. Epistomal sclerite shorter than broad, posterior hyaline plate with two symmetric lobes. Ligulate sclerites stalked, converging. Subhypostomal sclerites converging. Dorsal bridge semilunar. Dorsal cornua broader than ventral cornua from lateral view; distal third of ventral cornua hyaline. Cibarium hyaline.

Third instar ( Figs 42–44 View FIGURES 39 – 44 ). Length 3.57–4.05 mm. The facial mask relatively narrow (8–15 scraping cirri per row). The scraping cirri in anterior rows either bifid or trifid. The peristomal cirri stout and few in number. Labial lobe large and broad. The first thoracic segment with broad dorsal belt of comb spines. The second and third thoracic segment with narrow belt of comb spines and laterally with bumps. The anterior spiracles fan-shaped with 5 papillae. The processes of anal division poorly yet clearly developed. The posterior spiracles on stout short sprouts, the peristigmatic tufts small and simple.

Cephaloskeleton ( Fig. 193 View FIGURES 192 – 197 ). Length 0.59 mm (n= 1). Mouth hooks converging. Intermediate sclerite robustly built, ventral bridge narrow. Epistomal sclerite narrow with posterior hyaline process. Ligulate sclerites as converging vertical plates. Subhypostomal sclerite as converging arms. Rami and parastomal bars rather thick. Dorsal bridge semilunar. Dorsal cornua broader than ventral ones. Distal third of ventral cornua hyaline. Cibarium hyaline.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Lauxaniidae

Genus

Homoneura