Corethrella (Corethrella) jenningsi Lane, 1956

Published, First, 2008, The Frog-Biting Midges of the World (Corethrellidae: Diptera), Zootaxa 1804, pp. 1-456 : 102-103

Corethrella (Corethrella) jenningsi Lane

Corethrella jenningsi Lane 1942:106 . Type locality: Canal Zone, Panama. Holotype º (USNM). Lane 1953: 75.

DIAGNOSIS: Male adult: unknown. Female adult: only extant species of Corethrella in the New World with the wing with a distinct midlength band (Fig. 68L), with the katepisternum uniformly pigmented ( Fig. 46D), with a uniformly light brown midfemur (some with very faint basal darker pigmentation) which contrasts with the dark base of the hind femur, and with the hind tibia with discrete basal and apical bands ( Fig. 46D).

DESCRIPTION: Male adult. Unknown. Female adult. Descriptive statistics: see Tables 6–11. Head: Outline in anterior view laterally elongate ( Fig. 9D). Coronal suture short, extending ventrally to ventral margin of ommatidia but weaker at midlength. Two large setae on frons between ventromedial area of ommatida (as in Fig. 16E). Antenna mostly missing, flagellomere 1 pale, shape as in Fig. 28F. Clypeus ( Fig. 17 AI) squarish. Mandible with small, pointed teeth. Palpus ( Fig. 34E) pale; segment 3 swollen near midlength. Thorax (as in Fig. 46D): Light brown with darker pigmentation on pronotum to anepimeron and area ventral to this. Posterior portion of dorsocentral row with group of about 7 elongate setae. Prescutal suture elongate, interrupted by area of pale cuticle. Anterior anepisternum divided diagonally by sinuous suture, dorsal portion about equal to ventral portion. Ventral portion of posterior anepisternum triangular, uniformly brown, with anterodorsal margin thick. Wing (Fig. 68L): Apex of R 2 basal to apex of M 1. Anterior margin with differently, discretely pigmented scales (indicating anterior margin of midlength band), with midlength band; veins (other than costa and wing margin) with well-developed scales. Halter light brown, as dark as scutellum. Legs (as in Fig. 46D): Light brown with midcoxa, hind coxa, hind trochanter, basal 1/4 of hind femur, base and apex of hind tibia dark brown; midtrochanter, very base of midfemur slightly pigmented; mid-, hind leg tarsi with tarsomeres 2–4 with slight indication of banding. With only slender setae, lacking scales (except for some in patch of whip-like setae on posterior portion of hind tibia). Midleg with thick, subapical setae on each of at least tarsomeres 1–3. Claws of each leg equal to those of others; equal on each leg, simple (without inner teeth). Abdomen: Tergites 1–7, sternites 3–7 light brown; posterolateral margin of sternite 1, lateral margins of sternite 2 medium brown; segment 8 medium brown. Cercus light brown

Immatures. Unknown.

DISTRIBUTION AND BIONOMICS: Corethrella jenningsi is known only from the type locality in Panama (Fig. 125) at an altitude near 0 m .

TAXONOMIC DISCUSSION: The holotype was originally on a pin but has been placed on a microscope slide for this study. Lane (1942) described the antennae of the holotype as brown but these were missing (except for one flagellomere 1) when I examined it.

Lane and Aitken (1956:533) described the male, pupa and larva of this species as well as additional females from Trinidad and Tobago but these were almost certainly those of C. badia , described below. The

designation of a male allotype for C. jenningsi by Lane and Aitken (1956) subsequent to its original description by Lane (1942) is not allowed by the ICZN.

MATERIAL EXAMINED: Holotype, adult female on microscope slide, labeled “ Corethrella jenningsi Lane, 1941 , holotipo, Canal Zone, Pan, 1908–9, A.H. Jennings Coll ” ( USNM).

DERIVATION OF SPECIFIC EPITHET: The name jenningsi refers to the collector of the holotype, A.H. Jennings, as noted by Lane (1942, 1953).