Lachesilla championi, García Aldrete, 2017

García Aldrete, Alfonso N., 2017, New species of Lachesilla (Psocodea: Psocomorpha: Lachesillidae), in species group corona, from southern Mexico and Central America, Zootaxa 4347 (2), pp. 201-227 : 205-208

Lachesilla championi n. sp. Female

( Figs 14–17 )

Diagnosis. Subgenital plate concave posteriorly, flap broad, proximally narrow, widening distally, with posterior border obtusely convex. Gonapophyses stout, distally rounded, with sclerotized band proximally on outer border. Ninth sternum wide, broadly pentagonal, almost unpigmented, spermapore with pigmented rim, located towards posterior border.

Description. Color (56 years in 80% ethanol). Specimen mutilated, head and legs missing, only right forewing left. Remains of specimen lost after dissection and mounting the parts on the slide, hence color data not available.

Morphology. As in diagnosis, plus the following: Forewing pterostigma elongate, wider distally. Rs-M meeting at a point, areola postica wide, rounded apically, slightly slanted posteriorly ( Fig. 14 ). Subgenital plate ( Fig. 15 ) broad, with setae as illustrated, with a large pigmented area on each side of the flap, the flap almost twice as long as wide. Gonapophyses ( Fig. 16 ) sausage shaped, each with a field of 4–6 setae. Ninth sternum ( Fig. 16 ). Paraprocta ( Fig. 17 ) broad, semi-elliptic, setae as illustrated, sensory fields with 11 trichobothria. Epiproct ( Fig. 17 ) straight anteriorly, rounded posteriorly, with setae on distal half.

Measurements. FW: 2211.

Specimen studied. Holotype female. PANAMA. Cerro Punta. 19.vii.1961. J. M. Campbell ( ISU).

Etymology. This species honors the memory of George C. Champion, author of the Insecta. Coleoptera . Heteromera (part). Volume IV, Part 1 (1884–1893), Part 2 (1889–1893), Coleoptera . Rhynchophora. Volume IV, Part 4 (1902–1906), Coleoptera . Rhynchophora. Volume IV, Part 5 (1906–1909), Coleoptera . Rhynchophora. Volume IV, Part 7 (1909–1910), Insecta. Rhynchota. Hemiptera–Heteroptera. Volume II (1897–1901), and coauthor of the Insecta. Coleoptera . Phytophaga (part). Volume VI, Part 2 (1885–1894) of the Biologia Centrali- Americana.

Remarks. This species and L. willistoni n. sp., described below, have the posterior border of the subgenital plate concave in the middle, but the flap of the subgenital plate in L. championi is shorter and wider, the gonapophyses are distinct in both species, and besides, in L. championi they are associated to the ninth sternum, whereas in L. willistoni they are clearly associated to the clunium.

Figures

FIGURES 14 – 17. Lachesilla championi n. sp. Female. 14. Forewing. 15. Subgenital plate. 16. Gonapophyses and ninth sternum. 17. Epiproct and right paraproct. Scales in mm. Figures 16 and 17 to common scale.