Bolitophila (Bolitophila) zempoala Huerta 2018, new species
Creators: name: Huerta, Heron
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Bolitophilidae
Bolitophila

description: Bolitophila (Bolitophila) zempoala, new species
(Figs 1 ̄8)
Type−material. Holotype, male. MEXICO, Estado de México, Reserva Natural “Parque Nacional Lagunas de Zempoala” [19° 3´13.60´´ N, 99° 18´54.70´´W], 30̄ 31-Jul-2005, Malaise Trap, Breidenbaugh, M. & Huerta, H. (CAIM). Paratype, male, same data as holotype (CAIM).
Diagnosis. Scutum dark brown, except postpronotum and lateral margins pale yellow; vein R 2+3 ending in R 1; m̄cu crossvein oblique; in ventral view posterior margin of gonocoxites medially emarginated, with a broad Ūshaped depression, mesally with a pair of setose lobes; gonostylus in dorsal view with apical margin serrated (sharp spines); appendices of gonostylus strongly sclerotized, with basal portion L̄shaped, midportion swollen, bearing lateral short, fine spines.
Description Male: Body length 6.0 mm.
Head. (Fig. 2A). Brown, wider than long. Eyes dark brown, dichoptic, facets of similar width, length of interommatidial setae close to facet width. Three ocelli present, ocellar triangle brown, ocelli of similar size, distance between ocelli similar to ocellus diameter. Vertex slightly elevated, setose; frons bare, frontal furrow marked by a line, frontal tubercle small, between the bases of the antenna, face with several setae disposed as Fig. 2B. Clypeus with 6 setae. Mouthparts considerably reduced, labella small; premental apodeme Ȳshaped. Maxillary palpus longer than labella, five articulated segments. First segments very short, with a subapical seta; second segment cylindrical, shorter than third segment, with two subapical setae; third segment cylindrical, covered with several setae; fourth segment subcylindrical, similar in length to third, with several setae; fifth segment longer than other segments, cylindrical, setose, lighter than other segments, with the base pale, apex rounded. Antenna pale brown, length 4.96 mm (scape, pedicel and flagellomeres) (Fig. 3A), with 14 cylindrical flagellomeres. Scape subquadrate; pedicel moniliform; flagellomere 1 with the base pale; all flagellomeres covered with scattered setae; length of flagellomeres ĪXIV (mm): 0 44, 0.42, 0.50, 0.47, 0.43, 0.42, 0.37, 0.32, 0.29, 0.26, 0.23, 0.18, 0.19, 0.22; last flagellomere rounded apically, with apical setae and a pair of subapical setae (Fig. 3B).
Thorax. (Fig. 4A). Scutum dark brown, except postpronotum and lateral margins pale yellow; no transverse suture; notopleural, supra–alar areas and postalar callus without bristles; scutellum dark brown except lateral margin pale brown; mediotergite dark brown; pleural sclerites dark brown; katepisternum with three small setae.
Legs. Elongated and slender, uniformly brown, except base of fore femur pale brown; covered with fine trichia; tibial spurs 1:2:2. Coxae setose; femora clothed with fine microtrichia and setation. Fore and hind femur similar in length, mid femur shorter. All tibiae densely covered with microtrichia and regular rows of setae. Tibiae all similar in length with hind tibia slightly longer. Fore tibia with apical spur (Fig. 4B) about 1.05 times length of tibial diameter at apex, external mid spur similar in length to fore tibial spur and external hind spur about 1.4 times length of fore tibial spur. Apical comb of setae present at inner face of tibiae. First tarsomere of fore leg similar in length to tibia; first tarsomere of mid and hind legs shorter than tibia of each leg. All legs with dense microtrichia and with ventral row of spines. Tarsal claws dark brown, with basal inner teeth.
Wing (Fig. 5). Length, 4.63 mm; width, 1.42 mm. Membrane covered with abundant microtrichia, without macrotrichia. Stigma faint. All veins reaching wing margin; veins R 1, R 5, M 1, M 2 and M 4 with dark macrotrichia mainly in the apex. Costa long, reaching tip of wing, barely extending beyond tip of R 5. Sc long, ending in C, and before the base of Rs; R 1 long, curved at apex, extending about 3/4 of wing length. Base of Rs oblique, running considerably far from R 1. R 2+3 ending in R 1, short, sinuate; medial fork arising beyond the node of Rs and r-m; r̄m oblique; M 4 ends at wing margin almost the same level of the apex of R 1; CuA curved to the apex, reaching wing margin almost at the same level as the medial fork; m̄cu crossvein distinct. CuP extending slightly more beyond the middle of the wing. Halteres brown, pedicel and capitulum covered with short setae; elongated, similar in length to thorax, length 1.0 mm.
Abdomen. (Fig. 6). Segments brownish, elongated, length 4.5 mm, segments cylindrical, except last segment shorter.
Male genitalia (Figs 7 ̄8). Brownish. Length 0.30 mm, wide 0.36 mm. Gonocoxites robust, setose, fused ventromedially, anterior margin transverse, posterior margin of gonocoxites medially emarginated, with a broad Ūshaped depression (Figs 7 A–B); mesally a pair of setose lobes. Gonostylus robust, shorter than gonocoxite, lobe densely setose (Figs 8 A–B), in dorsal view with serrated margin apically (Fig. 8C); subbasal appendices spinelike, strongly sclerotized, with basal portion L̄shaped, mid-portion swollen, bearing lateral short, fine spines, distal portion with pointed tip (Figs 8B, D); cuplike process with distal margin comblike (Fig. 8B). Aedeagal complex (Fig. 7E) consisting of a simple, straight process with a pair of short lateral branches on anterior end, an opening at apex, ventrally covered by fused parameres (Figs 7 C–E). Tergite 9 with setation along posterior margin. Cercus short, with apex pointed, covered with setae (Fig. 8E).
Female. Unknown.
Distribution. Mexico (boundary between the states of Morelos and Mexico). The type locality is natural reserve “Parque Nacional Lagunas de Zempoala’’ (Fig. 1).
Etymology. The specific name is a noun in apposition, and refers to the name of type locality.
Remarks. Bolitophila (B.) zempoala spec. nov. is very closely related to Bolitophila (Bolitophila) dubiosa Van Duzee, 1928 and B. (B.) dupla Garrett, 1925. The three species exhibit similar characteristics of the male genitalia, however, the differences are mainly in the gonostyle: in B. dubiosa and B. dupla, the sclerotized appendices of the gonostylus is V or Ūshaped without a lateral spine (Kjaerandsen 2018a, b), whereas in B. zempoala it is L-shaped, with the lateral margin of the midportion bearing a lateral short spine (Fig. 8D). With respect to B. dupla the original description included no details, however, Shaw (1962) indicated the postpronotum (humeri) is brown, whereas in B. zempoala it is pale yellow. Otherwise, two similar Palaearctic species, Bolitophila (B.) basicornis (Mayer, 1951) and Bolitophila (B.) tenella Winnertz, 1864, exhibit similar appendices of the gonostylus, in B. basicornis it is L-shaped with bifid apex (Hutson et al. 1980) and B. tenella present Ūshaped with apex pointed (Hutson et al. 1980).
description: Published as part of Huerta, Heron, 2018, First record of the family Bolitophilidae (Diptera: Sciaroidea) from the Lagunas de Zempoala National Park, Mexico, with description a new species, pp. 553-562 in Zootaxa 4521 (4) on pages 555-561, DOI: 10.11646/zootaxa.4521.4.4, http://zenodo.org/record/2610146