Aedes (Howardina) guerrero Berlin, 1969
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publication ID |
https://doi.org/ 10.11646/zootaxa.5360.2.7 |
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publication LSID |
lsid:zoobank.org:pub:6F1A5FDE-A1B8-46FF-A394-038C650752EA |
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DOI |
https://doi.org/10.5281/zenodo.10169007 |
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persistent identifier |
https://treatment.plazi.org/id/4508EF15-FFD6-FF90-FF28-FB04D6CDF910 |
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treatment provided by |
Plazi |
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scientific name |
Aedes (Howardina) guerrero Berlin, 1969 |
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Aedes (Howardina) guerrero Berlin, 1969 View in CoL
Type locality: Chilpancingo, Guerrero, Mexico. Additional references: Berlin (1969), Clark-Gil & Darsie (1983).
Female ( Figs 2–4 View FIGURE 2 View FIGURE 3 View FIGURE 4 ). Head: Vertex covered with decumbent scales; with a central stripe of pale yellow scales and 2 lateral stripes of broad dark scales, all begin at ocular line and end at occiput; lateral areas of vertex with broad yellowish scales; posterior area of occiput with narrow dark or golden erect scales ( Fig. 3a View FIGURE 3 ); antenna about 0.7 length of forefemur; pedicel with a spot of iridescent white scales on inner side; maxillary palpus covered with dark scales, apex with white scales ( Fig. 3a View FIGURE 3 ); palpus about 0.14 length of proboscis ( Fig. 3b View FIGURE 3 ); clypeus without scales and setae ( Fig. 3a View FIGURE 3 ). Thorax: Integument of antepronotum brown, covered with broad white scales and 4 setae; integument of postpronotum brown with broad white scales and narrow yellow scales on upper part ( Fig. 3b View FIGURE 3 ); integument of scutum dark brown, with 2 dorsocentral stripes (4 in total) of golden-yellow scales extending from anterior margin to scutellum; stripe of broad white scales on antealar area ( Fig. 3a View FIGURE 3 ); scutellum covered centrally and on each lateral lobe with a group of narrow slightly yellow scales; each lateral lobe with 3,4 strong setae distally; pleura with patches of white scales on proepimeral, proepisternal, subspiracular, postspiracular (in three parts), prealar, upper mesokatepisternal, lower mesokatepisternal, upper mesepimeral, lower mesepimeral and mesomeral areas ( Figs 2a View FIGURE 2 , 3b View FIGURE 3 ). Wing: Scales dark, narrow. Legs: Forecoxa with a spot of white scales; foretibia with a small spots of white scales at base and apex ( Fig. 4a View FIGURE 4 ); foretarsomeres 1 and 2 with white basal bands ( Fig. 4a View FIGURE 4 ); midcoxa with 2 spots of white scales; midfemur with spots of white scales beyond middle and at apex ( Fig. 4b View FIGURE 4 ); midtibia with a small band of white scales at base ( Fig. 4b View FIGURE 4 ); midtarsomeres 1 and 2 with white basal bands ( Fig. 4b View FIGURE 4 ); hindcoxa with a spot of white scales; hindfemur with spots of white scales beyond middle and at apex ( Fig. 4c View FIGURE 4 ); hindtibia with a small white basal band ( Fig. 4c View FIGURE 4 ); hindtarsomeres 1 and 2 with broad white basal bands ( Fig. 4c View FIGURE 4 ). Abdomen ( Fig. 2b View FIGURE 2 ): Terga covered with dark scales, terga III–V with basal bands of white scales, lateral margins of terga I–V white-scaled; tergum VI with a small inverted triangular patch of white scales; terga VI,VII with lateral margins white-scaled, more conspicuous than on other terga. Sterna not examined. Genitalia ( Fig. 5 View FIGURE 5 ): Tergum VIII ( Fig. 5a View FIGURE 5 ) with proximal 0.40 retracted into segment VII, forming a nearly triangular shape with a rounded apex; anterior portion covered with pale scales, posterior 0.20–0.30 with dark scales; setae present on distal 0.50, more numerous and robust at apex; VIII-Te index 0.76 (maximum length/maximum width), VIII-Te/IX index 2.68; length 0.39 mm; width 0.51 mm. Sternum VIII ( Fig. 5b View FIGURE 5 ) nearly quadrangular, wider posteriorly, with a slightly convex and nearly straight caudal margin; scales in mesal area over distal 0.80; setae on distal 0.50, more numerous and stronger near apical margin; setae 1–5-S in mesal area, 1-S near the center; VIII-S index 0.88 (maximum length/maximum width); length 0.47 mm; width 0.52 mm. Tergum IX ( Fig. 5c View FIGURE 5 ) heart-shaped with small heavily pigmented lobes, interlobular space concave, width as wide as base of each lobe; 4 setae on each lobe; IX-Te index 1.0 (maximum length/maximum width); length 0.14 mm; width 0.14 mm ( Fig. 5c, d View FIGURE 5 ). Insula ( Fig. 5c View FIGURE 5 ) with 6 large and many small setae. Upper vaginal lip ( Fig. 5c View FIGURE 5 ) heavily pigmented, short, with a median thickening. Lower vaginal lip ( Fig. 5c View FIGURE 5 ) also heavily pigmented, curved in the middle. Postgenital lobe ( Fig. 5c, d View FIGURE 5 ) with wide apical portion, with a nearly straight apex and 10–12 setae; ventral PGL/Ce index 0.71; dorsal PGL index 1.5; ventral PGL index 0.75; ventral length 0.17 mm; dorsal length 0.08 mm. Cercus ( Fig. 5c, d View FIGURE 5 ) with rounded apex, dorsal surface with 4 strong and numerous delicate setae on distal 0.4; Ce index 2.1; Ce/dorsal PGL index 2.8; length 0.24 mm, width 1.0 mm.
Male ( Figs 6 View FIGURE 6 , 7 View FIGURE 7 ). Similar to female except for antenna (flagellomeres with larger flagellar whorls) and sexual characters. Genitalia ( Figs 6 View FIGURE 6 , 7 View FIGURE 7 ): Tergum IX moderately developed, with a slightly convex interlobar space, each lobe rather indistinct, with 3,4 (mode 3) short setae, usually with a thin accessory seta located below the lobe ( Figs 6a View FIGURE 6 , 7a View FIGURE 7 ). Gonocoxite ( Fig. 6a View FIGURE 6 ) long and cylindrical, more than 3.5 times its width at level of claspette. Claspette ( Fig. 6a View FIGURE 6 ) small, inconspicuous but slightly pointed, located near base of gonocoxite, with a long apical seta; basal portion about twice or less length of apical seta. Gonostylus ( Fig. 6a, b View FIGURE 6 ) about 0.25 times as long as gonocoxite, proximal 0.75 inflated, mainly in middle part, tapering to narrow distal 0.25, with 1 distal seta; claw relatively long, about 0.20–0.25 length of gonostylus. Proctiger ( Figs 6a View FIGURE 6 , 7a, b View FIGURE 7 ) strongly developed; paraproct ( Fig. 7b View FIGURE 7 ) simple, large, slender, strongly sclerotized, slightly curved distally with an apical tooth or beak, with 4 small cercal setae. Aedeagus ( Fig. 7c View FIGURE 7 ) similar in length to proctiger, lateral plates ( Figs 6a View FIGURE 6 , 7c View FIGURE 7 ) distinctly separated, each appearing as a slightly large and pyriform lobe on either side.
Pupa ( Fig. 8 View FIGURE 8 ). Chaetotaxy in Table 1 View TABLE 1 . Cephalothorax: Slightly tanned. Trumpet: Slightly darker than cephalothorax; length 0.43–0.53 mm (m = 0.47; sd = 0.03; n = 28), width 0.09–0.11 mm (m = 0.09; sd = 0.006; n = 28), trumpet index 4.18–5.44 (m = 4.77; sd = 0.45; n = 28), pinna 0.08–0.13 mm (m = 0.1; sd = 0.016; n = 28), meatus 0.3–0.42 mm (m = 0.36; sd = 0.036; n = 28) ( Fig. 8a View FIGURE 8 ). Abdomen: Slightly tanned, terga with darker central areas, length 3.0– 3.7 mm (m = 3.26; sd = 0.25; n = 28); nearly all setae single, setae 1-I and 9-VIII fanlike with aciculate dendritic branches. Paddle: Slightly yellow, lighter than abdomen, midrib conspicuous, except at apex, with marginal serration more conspicuous from mid-length to apex; length 0.68–0.78 mm (m = 0.73; sd = 0.027; n = 28), width 0.49–0.58 mm (m = 0.53; sd = 0.032; n = 28), paddle index 1.25–1.47 (m = 1.37; sd = 0.066; n = 28). Genital lobe: Darker than body; length J ( Fig. 8b View FIGURE 8 ) 0.44–0.5 mm (m = 0.47; sd = 0.025; n = 28), ♀ 0.27–0.3 mm (m = 0.28; sd = 0.013; n = 28).
Fourth-instar larva. Antenna: With a few scattered spicules. Abdomen: Segment I glabrous; segments II– VIII with spine-like spicules; seta 1-V,VI with 5 or fewer branches. Abdominal segment VIII: Comb with 12–14 scales in a single row, individual scales long, pointed, finely fringed nearly to apex. Abdominal segment X: Saddle with distinct large caudal marginal spine-like spicules, not extending beyond insertion of seta 1-X. Siphon: Pecten with about 20 spines that extend to mid-length of siphon, ending just before insertion of seta 1-S, spines pointed with a conspicuous basal tooth and finely denticulate margin; seta 1-S usually with 2 or 3 branches; siphon index approximately 3.5.
Bionomics. The immature stages develop in epiphytic bromeliads on Quercus species.
Distribution. Aedes guerrero has been recorded in Guatemala (Santa Bárbara, Clark-Gil & Darsie 1983) and Mexico: Estado de México, Guerrero, Oaxaca, Puebla ( Berlin 1969; Díaz-Nájera & Vargas 1973; Heinemann & Belkin 1977b; Viveros-Santos & Sandoval-Ruiz 2018; Adeniran et al. 2021).
Material examined. 13♀, 13J, 24 pupal exuviae, 11 larval exuviae, 14 larvae, MEXICO: Puebla, Amozoc, State Park General Lázaro Cárdenas del Río “Flor del Bosque”, Quercus forest (19° 01′ 12′′ N, 98° 06′ 41′′ W), 2,353 m a.s.l., water accumulated in epiphytic bromeliads on Quercus species, 26 September 2014; 3♀ Pe, 1JPe, Quercus forest (19°01′ 20′′ N, 98° 06′ 46′ W), 2,408 m a.s.l., water accumulated in epiphytic bromeliads on Quercus species, 28 September 2018.
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