Atrichopogon grogani Huerta & Dzul, 2012, new species
Creators: name: Huerta, Herón
name: Dzul, Felipe
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ceratopogonidae
Atrichopogon
Atrichopogon grogani

description: Atrichopogon grogani, new species
Figs. (4B–8)
DIAGNOSIS. Male: only Neotropical species of Atrichopogon with pilose lobe on sternite 9, aedeagal-parameral complex with basal arch poorly developed, with evident basal, sclerotized band; median portion with posterolateral margin wrinkled. Female, with the following combination of characters: large spermatheca; femora and tibiae with narrow basal and broad subapical pale rings; pharynx with spicules and scutum and subscutellum darker.
DESCRIPTION. Male adult. Head. Pale brown. Ommatidia without interfacet pubescence; broadly abutting medially for length of 5–6 ommatidia. Antenna (Fig. 5 A), flagellomeres 10-13 brown; with plume setae welldeveloped; flagellomeres 2–9 partially fused; flagellomeres 9–10 with plume setae, 10 longer than 9, flagellomere 9/10 0.68–0.69 (0.68, n=2); flagellomeres 11–13 elongate; flagellomere 11 longer than other flagellomeres; flagellomere 13 with apical projection not basally constricted; AR 1.23–1.24 (1.23, n=2). Palpus (Fig. 5 C) brown; third segment with subapical sensory pit opening on distal third; segments 4, 5 separate; PR 2.46–2.47 (2.46, n=2). Proboscis length 0.18–0.19 (0.18, n=2) mm; head width/proboscis length 2.7 (n=2). Thorax darker, scutum and subscutellum darker, scutellum brown; scutum with setae arising directly from surface, not in pits; with lateral suture. Paratergite with one seta. Anepisternum narrow, broadly bilobed posteriorly. Wing (Fig. 6 A) plain, without pattern of pigmented membrane; without macrotrichiae; second radial cell 2.6 times longer than first; first radial open; wing length 1.51–1.52 (1.51, n=2) mm; breadth 0.43 (n=2) mm; CR 0.68 (n = 2). Halter pale.
Legs pale brown; femora and tibiae (Figs. 7 A–C) with narrow basal and broad subapical pale rings; hindtibia slightly expanded at apex. Fore femur with subapical tuft of setae. Hindtibial spur thick, longer than width of hindtibia at midlength; hindtibial comb with 10 spines; prothoracic TR 2.9–2.10 (2.9, n=2), mesothoracic TR 2.6–2.7 (2.6, n=2), metathoracic TR 2.6–2.7 (2.6, n=2); claws curved; empodia present. Abdomen (Fig. 8 D) brown. Genitalia (Figs. 4 B, 8D–E) large (length 0.3 mm), tergite 9 extending to same level of apex of gonocoxite; swollen basally; posterior margin rounded; sternite 9 with prominent pilose mesal lobe. Gonocoxite without medial lobe, moderately stout, gonocoxite length/width 2.0 (n=2); gonostylus 0.75 as long as gonocoxite, swollen at base, tapering to apex, tip rounded with tiny apical cuticular projection spine. Aedeagal-parameral complex broad, rounded; lateral arms curved posteriorly; basal arch poorly developed, with evident basal, sclerotized band; median portion with posterolateral margin wrinkled; small, triangular posteroventral processes. Cercus lobe-like, not extending beyond margin of tergite.
Female adult. As for male, with following differences. Head: female have bare eyes and with broadly abutting ommatidia medially for a length of 8 ommatidia; pharynx with spicules. Antenna with flagellomeres 1–8 longer than breadth; flagellomeres 9–13 elongate, proportions as shown in Fig. 5 B, flagellomere 13 with apical projection; AR 2.0 (n = 2); palpus as Fig. 5 D; PR 2.4–2.6 (2.5, n=2); head width/proboscis length 3.2 (n=2). Mandible without teeth. Thorax: prothoracic TR 3.2–3.3 (3.2, n=2), mesothoracic TR 3.0–3.1 (3.0, n=2), metathoracic TR 2.3 (n= 2).
Legs pale brown, pattern as in Figs. 7 D–F. Wing (Fig. 6 B) membrane infuscated without pattern of pigmented membrane; anterior veins brown; coarse macrotrichia numerous on distal third of wing; second radial cell nearly 3.3 times longer than fist; first radial cell open; wing length 1.67–1.71 (1.69, n=2) mm; breadth 0.69 (n=2) mm; CR 0.77 (n=2). Abdomen (Figs. 8 A–B). Genitalia: Sternite 8 narrow, with pair of lateral lobes, anterior with long setae, posterior with tuft of short setae. Sternite 9 narrow. Spermatheca (Fig. 8 C) long, with short neck, measuring 0.24–0.26 (0.25, n=2) mm by 0.12–0.14 (0.13, n=2) mm.
DISTRIBUTION. Mexico: Oaxaca.
TAXONOMIC DISCUSSION. Atrichopogon grogani is similar to A. mexicanus Huerta (2001). Both are large, brown species, and the females have bare eyes and with broadly abutting ommatidia medially for a length of 8 ommatidia, pharynx with spicules, mandible unarmed, membrane of wing with dense macrotrichia, legs with basal and subapical pale bands, spermatheca long and sternite 8 with posterolateral setal tufts. Sternite 9 of the male of both species bear a prominent pilose lobe on mesal portion, tergite 9 is rounded and the gonostylus tapers apically, with a tiny projection on its tip. However, A. grogani is clearly distinguished from A. mexicanus by the small basal arch and with evident basal, sclerotized band of the aedeagal-parameral complex. The females are nearly identical, except by coloration of scutum and subscutellum darker in A. grogani, while A. mexicanus is brown.
TYPES: HOLOTYPE. Male adult on microscope slide in Euparal. “ MEXICO /Oaxaca/Municipio San Juan Guichicovi/Localidad El Zacatal/ 26–28/jul/2009 /Trampa Malaise/Col. Salceda Sánchez B., Rodríguez Atanacio J. & Ordoñez Álvarez J./ HOLOTYPE / Atrichopogon grogani Huerta & Dzul (CAIM)”. Paratypes. One male and two females, same data as holotype.
DERIVATION OF SPECIFIC EPHITHET: We are pleased to dedicate this species to our colleague, Dr. William Grogan Jr., in recognition of his friendship and for his valuable contributions to ceratopogonid systematics.
description: Published as part of Huerta, Herón & Dzul, Felipe, 2012, Two New Species of the Genus Atrichopogon Kieffer (Diptera: Ceratopogonidae) from Mexico, pp. 20-30 in Zootaxa 3557 on pages 24-30, DOI: 10.5281/zenodo.215472