Colobostema emilianoi, Huerta, Heron, 2013

Huerta, Heron, 2013, New species of the genus Colobostema Enderlein (Diptera: Scatopsidae) from Mexico, Zootaxa 3619 (2), pp. 183-194 : 184

publication ID	https://doi.org/ 10.11646/zootaxa.3619.2.6
publication LSID	lsid:zoobank.org:pub:842987A2-768D-4296-A2CD-9FCA8E8F76F1
DOI	https://doi.org/10.5281/zenodo.6162147
persistent identifier	https://treatment.plazi.org/id/03A5E76A-714A-047E-F1C7-FEFBFF06B9CB
treatment provided by	Plazi
scientific name	Colobostema emilianoi
status	sp. nov.

Treatment

Colobostema emilianoi View in CoL sp. nov.

( Figs. 1 View FIGURE 1 A, 2A, 3A, 4A, B, 5A, 6A, 7A)

Type material. HOLOTYPE male, labeled: MEXICO, Chiapas, Municipio Chenalhó, cerca a la Localidad La Esperanza, 14 al 17-Nov-2009, Malaise trap, Salceda Sánchez B. & Rodríguez, A. A., cols. Specimen dissected and mounted on microscopic slide, deposited in CAIM. Three male paratypes, same data as holotype.

Diagnosis. Costal cell wide; CuA1 ends before level of the apex of costa; tergite 7 with posterior margin medially produced; penis not reaching apical margin of tergite 9; tergite 9 triangular.

Description. Male. Head dark brown. Eyes with interommatidial spicules; antenna with 8 flagellomeres ( Fig. 1 View FIGURE 1 A) uniformly brown; first flagellomere subcylindrical, flagellomeres 2 to 7 wider than long, distal flagellomere club-shaped; flagellum length 0.53 (0.52–0.54 mm, n=2); palpus ( Fig. 2 View FIGURE 2 A) light brown, short, with rounded apical sensory pit, length 0.05 mm (n=2); labellum light brown, short and rounded. Thorax uniformly brownish; scutum covered with short setae; anterior spiracular sclerite with 28–30 setae; anepisternum and anepimeron with scattered setae, 3 katepisternal setae. Legs brownish; femora uniformly brown; tibiae annulated, broad basal and apical pale rings on all tibiae; tarsi pale brown. Wing ( Fig. 3 View FIGURE 3 A) length 1.61 mm (1.53–1.69 mm, n=2), width 0.76 mm (0.71–0.82 mm, n =2); membrane entirely densely micropilose. Anterior veins R1, Rs and R4+5 broadened and thickened, with irregularly arranged rows of short setae on dorsal surface; costal cell wide; C 0.7 of total wing length; r-m very short; fork of M slightly asymmetrical, with a weakly marked sub-basal angle on M1; M1, M2, CuA1 and CuA2 not reaching wing margin; false vein faint; CuA1 ends before apex of C; CuA2 weakly sigmoid. Halter pale brown, with 4 setae on stem. Abdomen: Sternite 7 (Fig. 4B) with shallow posterior emargination, length, 0.41 mm, width, 0.14 mm; anterior margin of tergite 7 (Fig. 4A) concave, posterior margin medially produced, length, 0.29 mm, width, 0.15 mm. Genital capsule massive ( Fig. 5 View FIGURE 5 A); gonocoxite short and robust, with pointed apex, length 0.10 mm, width 0.04 mm; paramere ( Fig. 6 View FIGURE 6 A) bearing comb of dense setae; penis elongate, sinuous subapically, length, 0.13 mm, not reaching apical margin of tergite 9; tergite 9 ( Fig. 7 View FIGURE 7 A) triangular, with pair of short and strong teeth-like apical projections, length, 0.13 mm, width at base, 0.15 mm.

Female. Unknown.

Discussion. This species is similar to C. variatum Cook and C. bijleveldi Haenni & Rapp. C. emilianoi may be distinguished from C. variatum by the wing venation, the medially produced posterior margin of tergite 7 and the setae of the paramere. The new species is similar to C. bijleveldi in the shape of tergite 7 and male genitalia, but differs in the length of tergite 9 with respect to the length of gonocoxite (in C. bijleveldi T9 is short and does not reach the apex of gonocoxite); also in C. emilianoi CuA1 ends before level of the apex of costa (in C. bijleveldi CuA1 ends beyond level of the apex of C).

Distribution. Mexico (Chiapas).

Ecology. Specimens were collected using a Malaise trap, in a tropical dry forest, at the elevation of 460 m. GPS Coordinates: 92 29´55´´N; 16° 59´47´´W.

Etymology. This species is named after my son, Emiliano Huerta Trujillo, for being such an inspiration in my life.