Dichaetomyia taveuniana Pont & Evenhuis

Taveuni House Fly (Dichaetomyia taveuniana)

The Taveuni House Fly was described in the year 2006, it was found during the sorting of insect trap material from the islands of Taveuni and Viti Levu.

It is a small, orange colored fly with a dark pattern on the dorsal side of the thorax.

~~~

The species belongs to a quite large genus, of which, however, only three species are known to occur on the Fijian Islands. Beside the new species these are the Elegant House Fly (Dichaetomyia elegans Malloch), which is known from the islands of Ovalau, Vanua Levu and Viti Levu, and the Orange House Fly (Dichaetomyia vicaria (Walker)), which is widely distributed, and which may not be native to the Fijian Islands.

*********************

References:

[1] Adrian C. Pont; Neal Evenhuis: A New Species of Dichaetomyia Malloch (Diptera: Muscidae) from the Fijian Islands. Fiji Arthropods VI. Edited by Neal L Evenhuis & Daniel J. Bickel. Bishop Museum Occasional Papers 90: 3-7. 2006

*********************

edited: 23.06.2017

Advertisements

Trupanea bidensicola Hardy & Delfinado

Beggarticks Fruit Fly (Trupanea bidensicola)

The Beggarticks Fruit Fly comes from the island of Kaua’i and was described in the year 1980.

It closely resembles the Thick-legged Fruit Fly (Trupanea crassipes (Thomson)) and was considered identical with it for some time.

The larvae of this species feed on the developing seeds of the Cosmosflower Beggarticks (Bidens cosmoides (A. Gray) Sherff), and probably also on other species from that genus.

*********************

edited: 23.06.2017

Campsicnemus aa Evenhuis

Nukuhiva Long-legged Fly (Campsicnemus aa)

This species from the island of Nuku Hiva was described in the year 2009.

The males reach a length of about 0,34 cm, the pale smoky grey colored wings are of about the same lenght. The head is dark brown to black in color, the thorax, which is slightly shimmering bluish on the upside, is brown to dark brown colored and covered with several black setae, the abdomen is dark brown in color and likewise covered with black setae on the upside. The legs are yellowish resp. yellowish brown in color.

The females of this species are hitherto unknown. [1]

~~~

About 200 species of the genus Campsicnemus are currently known from the Polynesian region alone, new species are discovered and described regularely.

*********************

References:

[1] Neal L. Evenhuis: Review of Camspicnemus (Diptera: Dolichopodidae) of the Marquesas, French Polynesia, with description of four new species groups. Zootaxa 2004: 25-48. 2009

Humongochela hardyi Evenhuis

Hardy’s Waterfall-loving Long-legged Fly (Humongochela hardyi)

This species, which is endemic to the island of Nuku Hiva, was described in the year 2004, together with the two other presently known species from this genus.

The males reach a size of about 0,56 to 0,58 cm. The head is grey to black in color, the thorax and the abdomen are dark brown. The legs are yellow resp. brown in color. The wings are about 0,5 cm long and subhyaline throughout.

The females are completely black in color, but show a blue-green gloss. Their legs are brown colored. The wings are smoky brown in color, the veins are somewhat darker.

This species was found on several places of the island, but always within the immediate proximity of waterfalls.

*********************

References:

[1] Neal L. Evenhuis: Humongochela, a new genus of waterfall-loving flies from the Marquesas Islands (Diptera: Dolichopodidae). Bishop Museum Bulletin in Entomology 12: 35-43. 2004

Gonomyia tahitiensis Alexander

Tahitian Crane Fly (Gonomyia tahitiensis)

This species, which comes from the island of Tahiti, was described in the year 1921.

~~~

Lucy Evelyn Cheesman writes in the year 1932 in ‘Hunting insects in the South Seas’.:

“They have one most curious and unaccountable habit, shared with many other midges, and that is to hang upside down in cobwebs. The spiders know them quite well, and apparently make no attempt to catch them. But although some of the webs where they hang are sticky to the touch, yet the midges never seem to be entrapped. It is a curious habit for any insect to hang suspended in this fashion, and why they should do so in a place so fraught with danger as a spider’s web is incomprehensible. On some islands there are spiders with white bands to their legs which at first sight can be mistaken for these midges, but whether the spider mimics the midge or the other way is not plain, for it is difficult to see what advantage such mimicry would be to either.” [1]

*********************

References:

[1] L. E. Cheesman: Hunting insects in the South Seas. Ballou 1933
[2] C. P. Alexander: Tipulidae of the Southeastern Pacific (Diptera). Bishop Museum Occasional Papers 18(22): 337-347. 1947
[3] J. H. Nitta; P. M. O´Grady: Mitochondrial phylogeny of the endemic Hawaiian craneflies (Diptera, Limoniidae, Dicranomyia): Implications for biogeographiy and species formation. Mol. Phylogenet. Evol. (2008), doi:10.1016/j.ympev.2007.12.021

Drosophila alsophila Hardy & Kaneshiro

Banded Picturewing Fly (Drosophila alsophila)

The Banded Picturewing Fly is believed to be extinct, it is known from two localities at the Hualalai volcano on the island of Hawai’i and was always rare.

The flies placed their eggs on the woody stems of plants of the genera Charpentiera and Urera, on whose decaying bark their larvae fed.

An exact extinction date cannot be given.

*********************

edited: 05.10.2016

Drosophila molokaiensis Grimshaw

Molokai Picturewing (Drosophila molokaiensis)

This species from the island of Moloka’i (?) is known only on the basis of the type specimen, which lacks the head, and which cannot be assigned to any of the species groups within the genus.

*********************

References:

[1] Karl N. Magnacca; Patrick M. O’Grady: New combinations in Hawaiian Drosophila and Scaptomyza (Diptera: Drosophilidae): zootaxa 1926: 53-60. 2008

Bryania bipunctata Aldrich

Nihoa Two-spotted Asteriid Fly (Bryania bipunctata)

This species, which obviously occurs exclusively on the island of Nihoa, was described in the year 1931 on the basis of two female specimens.

The animals reach a length of about 0,16 cm.

~~~

The genus is monotypic, and the species is only distantly related to the other Hawaiian members of the family Asteiidae.

*********************

References:

[1] J. M. Aldrich: New Acalytrate Diptera from the Pacific and Oriental Regions. Proc. Haw. Ent. Soc. 7(3): 395-399. 1931
[2] Patrick M. O´Grady; Karl Nicholas Magnacca: Studies in Hawaiian Diptera I: New Distributional Records for Endemic Asteia (Asteiidae). Biodiversity Data Journal 2: e1010. doi: 10.3897/BDJ.2.e1010

Campsicnemus makawao Evenhuis

Makawao Long-legged Fly (Campsicnemus makawao)

This species was scientifically described in the year 2011 and named after the typus locality, the Makawao Forest Reserve in the east part of Maui.

The Makawao Long-legged Fly resembles the two species Campsicnemus penicillatus Parent from the island of Hawai’i as well as Campsicnemus penicillatoides Evenhuis from Kaua’i.

The animal is about 0,3 to 0,31 cm long. The head is dark brown, the thorax is yellowish brown and the abdomen is brown in color. The legs are yellowish white in color. The wings are about 0,31 to 0,32 cm long and subtransparent.

The females of this species are hitherto unknown.

********************

References:

[1] Neal L. Evenhuis: New Species of Campsicnemus from East Maui, Hawaiian Islands (Diptera: Dolichopodidae). Bishop Museum Occasional Papers 109: 15-22. 2011

Physiphora insulaepaschalis (Enderlein)

Easter Island Lance Fly (Physiphora insulaepaschalis)

This fly species is one of the few, still existing endemic animal species of Easter Island that survived the complete destruction of the island’s former ecosystem.

The fly is about 0,25 to 0,28 cm in length, its wings, which are yellowish brown colored and inconspicuous banded, reach a length of about 0,25 cm.

The head is black and shows a strong metallic blue gloss, the forehead is yellowish brown in color. The thorax is deep black in color and glossy metallic blue too. The abdomen is brownish red in color and glossy blue too. The legs are dark brown in color.

Males and females resemble each other.

*********************

References:

[1] G. Enderlein: Die Dipterenfauna der Juan-Fernandez-Inseln und der Oster-Insel. in The Natural history of Juan Fernandez and Easter Island, edited by Carl Skottsberg. Vol. 3: 643-680., Zoology. Uppsala: Almqvist & Wiksells Boktryckeri, 1921-1940