Eratomyia, Published, 2007

DE SOUZA AMORIM, DALTON & RINDAL, EIRIK, 2007, Phylogeny of the Mycetophiliformia, with proposal of the subfamilies Heterotrichinae, Ohakuneinae, and Chiletrichinae for the Rangomaramidae (Diptera, Bibionomorpha), Zootaxa 1535 (1), pp. 1-92 : 14

publication ID

https://doi.org/ 10.11646/zootaxa.1535.1.1

publication LSID

lsid:zoobank.org:pub:8E7D8F88-E564-423C-922B-C7098D06125F

DOI

https://doi.org/10.5281/zenodo.5088460

persistent identifier

https://treatment.plazi.org/id/039487A2-5B08-FF9D-4AB8-9AACFBADD237

treatment provided by

Felipe (2021-07-09 18:03:37, last updated by Plazi 2023-11-03 08:12:00)

scientific name

Eratomyia
status

gen. nov.

Eratomyia View in CoL , n. gen.

( Figs. 7–15 View FIGURES 7–10 View FIGURES 11–15 )

Type species. Eratomyia magnifica View in CoL sp. n., here designated

Diagnosis. First sector of m-cu longer than in other genera of subfamily, m-cu reaching CuA more distally. M 1+2 /M 3+4 shorter than m-cu, r-m long. Tergites 1-4 and 6 shining brown, tergite 5 yellow. Midpleural pit absent.

Etymology. The species name is feminine, from the Greek eratos, lovely, meaning a lovely fly.

Comments. This genus, which is known only from the type species, from Ecuador, appears in the phylogenetic analysis (below) as the sister group of Chiletricha , which is known from Chile, southern Argentina, and southern Brazil. It differs from the Chiletricha species in wing features, with a much wider basal cell, R 5 separated from C, and M 4 originating from CuA not as basally in the wing ( Figs. 10 View FIGURES 7–10 , 16 View FIGURES 16–19 ). Mouthparts are fairly similar ( Figs. 7 View FIGURES 7–10 , 17 View FIGURES 16–19 ). In the thorax, the mesepimeron of Eratomyia is more slender on its ventral half, whereas the laterotergite is slightly larger ( Figs. 8 View FIGURES 7–10 , 18 View FIGURES 16–19 ). Tergite 9 has strong spines on a pair of distal projections ( Fig. 12–15 View FIGURES 11–15 ), as also seen in Chiletricha ( Fig. 19 View FIGURES 16–19 ), Rhynchoheterotricha , and Insulatricha , and the gonocoxites have a pair of unique digitiform projections bearing setae and a pair of spines.

Gallery Image

FIGURES 7–10. Eratomyia magnifica, sp. n. 7. Head (apical maxillary palpal segments not represented), lateral view. 8. Thorax. 9. Front tibial apex, inner view. 10. Wing.

Gallery Image

FIGURES 11–15. Eratomyia magnifica, sp. n. 11. Male terminalia, posterior view. 12. Male terminalia, lateral view. 13. Gonostyle, external view. 14. Aedeagus and gonocoxal bridge. 15. Tergites VIII–X and cerci, posterior view.

Gallery Image

FIGURES 16–19. Chiletricha. 16, 17. Chiletricha seminuda (Freeman). 16. Wing. 17. Mouthparts, posterior view. 18, 19. Chiletricha marginata (Edwards). 18. Thorax. 19. Male terminalia, dorsal view.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Rangomaramidae