Simulium (Hearlea) juarezi Vargas & Díaz Nájera

Coscarón, S., Esquivel, D. R. Miranda, Moulton, J. K., Arias, C. L. Coscarón- & Bernal, S. Ibañez, 2004, Simulium (Hearlea) Vargas, Martínez Palacios, & Díaz Nájera (Diptera: Simuliidae): Taxonomic revision and cladistic analysis, Zootaxa 396, pp. 1-52 : 22-23

publication ID

https://doi.org/ 10.11646/zootaxa.396.1.1

publication LSID

lsid:zoobank.org:pub:88E81C6A-69D2-4C50-9D58-738C8270C720

DOI

https://doi.org/10.5281/zenodo.5227474

persistent identifier

https://treatment.plazi.org/id/066EE960-FFE6-8B31-0451-E931FB7100DE

treatment provided by

Felipe

scientific name

Simulium (Hearlea) juarezi Vargas & Díaz Nájera
status

 

Simulium (Hearlea) juarezi Vargas & Díaz Nájera View in CoL

Figs. 1F, G View FIGURE 1 , 3A View FIGURE 3 , 5N, O.

Simulium (Hearlea) juarezi Vargas & Díaz Nájera 1957: 205 View in CoL , 262, 304, Figs. 161–169; Díaz Nájera & Vulcano 1962: 100, Figs. 72–75.

Female: Wing length, 3.3–3.8 mm. General coloration blackish brown. Head brown, with frons and clypeus gray pollinose. Scape and pedicel light brown; flagellum dark brown. Palpus and haustellum dark brown. Scutum brown, with grayish pruinosity and yellowish– green to brown decumbent hairs varying in coloration with light position. Scutum with 1+1 submedian vittae that are silvery white with posterior lighting and blackish with anterior lighting, extending from 1+1 subquadrate anterior spots to prescutellar area; median blackish stripe about 3 times wider than silvery submedian stripes ( Figs. 1F, G View FIGURE 1 ); humeral spots light gray pollinose as are narrow lateral borders and prescutellar area. Legs yellowish brown, with apices of femora, tibiae, and tarsomeres dark brown–black. Basal portion of cibarium smooth, with thickened rim, and 1+1 subovoidal sublateral prominences. Abdomen dark brown. Genitalia as in S. capricorne .

Male: Wing length, 3.2–3.6 mm. General coloration as in female but more darkened. Scutum velvety blackish, with anterior third grayish pollinose and separated medially by blackish area ( Fig. 3A View FIGURE 3 ). Legs mostly brownish dark, with closely appressed yellowish brown short hairs and blackish long hairs. Hind basitarsus 4 times longer than broad. Genitalia as in S. capricorne .

Pupa: Cocoon slipper shaped, closed anteroventrally, neatly woven, with reinforced anterior margin and frequently covered by sand particles. Length: basal, 3.4–4.0 mm; dorsal, 3.2–3.5 mm. Frontoclypeus and anterodorsum of thorax with abundant, rounded, variably sized granules. Gill with three semi­membranous branches; medial branch largest, strongly clavate, with numerous tubercles dorsally and annulations basally; ventral branch laterally flattened, subannulated, directed medially; dorsal branch slowly accuminate, subannulated, slightly shorter than ventral branch, directed medially. ( Figs. 5 N, O View FIGURE 5 ).

Larva: (Diagnosis derived from Díaz Nájera & Vulcano, 1962). Length, 7.5 mm. General coloration greenish dorsally and yellowish ventroapically. Cephalic apotome darkened basally and medially. Labral fan with 50 primary rays. Hypostoma with 8–10 lateral setae per side. Postgenal cleft dome shaped, narrowed distally. Posterior circlet with ca. 145 rows of 17 hooks. Rectal papillae trilobed, with 5–7 lobules per lobe (15–21 total), median anterior diverticle larger than others.

Material examined: México: México, Río Frío 3000 m, 1 female, 1 male reared, 1 pupa, 6 September 1969, P. & B. Wygodzinsky ( AMNH) .

Distribution: México: México, Oaxaca, Veracruz, Chiapas and Michoacán.

Discussion: The peculiar expanded, dorsally globulose medial gill branch is diagnostic for this species. The closest species with inflated gill branches is S. contrerense .

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Simuliidae

Genus

Simulium

Loc

Simulium (Hearlea) juarezi Vargas & Díaz Nájera

Coscarón, S., Esquivel, D. R. Miranda, Moulton, J. K., Arias, C. L. Coscarón- & Bernal, S. Ibañez 2004
2004
Loc

Simulium (Hearlea) juarezi Vargas & Díaz Nájera 1957: 205

Diaz Najera, A. & Vulcano, M. 1962: 100
Vargas, L. & Diaz Najera, A. 1957: 205
1957
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