Image Number: 0002164

Ventral views of the abdomens’ of both H. pakistanae and H. balciunasi showing the morphology of the external male genitalia. Note the cruciate or crossed macrochaetae in both species, a configuration that is not found in native Hydrellia species. The primary difference between the two introduced species is the size and shape of the macrochaetae. In H. pakistanae, the macrochaetae are smaller and needle-like in comparison to H. balciunasi where the macrochaetae are larger and spoon-shaped at the ends
Image type:
Image view:
Ventral / Adaxial / Front

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Image location:
United States


Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Atelocerata
Class: Hexapoda (including Insecta)
Infraclass: Neoptera
Subclass: Pterygota
Order: Diptera
Suborder: Brachycera
Infraorder: Acalyptratae
Superfamily: Ephydroidea
Family: Ephydridae
Subfamily: Hydrelliinae
Tribe: Hydrelliini
Genus: Hydrellia
Subject: Hydrellia spp. Robineau-Desviody 1830


Kingdom: Plantae
Phylum: Magnoliophyta
Class: Liliopsida
Subclass: Alismatidae
Order: Hydrocharitales
Family: Hydrocharitaceae
Genus: Hydrilla
Subject: Hydrilla verticillata (L. f.) Royle
Node Affiliation:
Image uploaded:
Monday, January 1, 2001
Image last updated:
Saturday, January 23, 2016