The Frog-Biting Midges of the World (Corethrellidae: Diptera) Author Published, First text Zootaxa 2008 2008-06-16 1804 1 456 journal article 1175­5334 Corethrella ( Corethrella ) dominicana Borkent , new species DIAGNOSIS: Male adult : unknown. Female adult : only fossil species of Corethrella with only setae on the wing veins (other than on the wing margin) (as in Fig. 73C). DESCRIPTION: Male adult . Unknown. Female adult . Habitus as in Fig. 113A. Descriptive statistics: see Tables 6–11 . Head : Outline in anterior view uncertain. Number of large setae on frons between ventromedial area of ommatida uncertain. Antenna: pedicel without more elongate, stout, dorsal or dorsolateral setae; flagellomeres as in Fig. 32L ; sensilla coeloconica not visible; flagellomere 13 with well-developed apical bifurcation. Clypeus shape uncertain. Mandible not visible. Palpus ( Fig. 35 AC) with segment 3 swollen apically. Thorax : Posterior portion of dorsocentral row with 2 elongate setae situated somewhat lateral to one another. Prescutal suture uncertain. Shape of anterior anepisternum uncertain; ventral portion of posterior anepisternum not differentiated from dorsal portion. Wing : Angled in amber, similar to other Corethrella in the rotunda species group; apex of R 2 basal to apex of M 1 . Veins (other than wing margin) with setae. Legs : With only slender setae, lacking scales (except for some in patch of whip-like setae on posterior portion of hind tibia). Presence of thick, subapical setae on tarsomeres 1–3 uncertain. Claws of each leg equal to those of others; equal on each leg, simple (without inner teeth). Empodia thick. Immatures . Unknown. DISTRIBUTION AND BIONOMICS: Corethrella dominicana is known only from Dominican Republic amber (Fig. 139), dated at 19 million years old. There was a male Cecidomyiidae and a small parasitic wasp in the amber containing the holotype . TAXONOMIC DISCUSSION: The holotype is in excellent condition, mostly opaque but with portions of the antennae, palpi and legs cleared. TYPES: Holotype , female adult in unmounted piece of amber in storage box, labeled " HOLOTYPE Corethrella dominicana Borkent ”, “AMBER: Oligo-Miocene , Dominican Republic , AMNH no. DR-14-194, Locality : north mines, ♀ Corethrellidae ” ( AMNH ). DERIVATION OF SPECIFIC EPITHET: The name dominicana refers to the type locality in the Dominican Republic .