A new species of Lachesilla Westwood (Psocoptera: Lachesillidae) in the andra group with a proposed classification of the andra group Author Mockford, Edward L. Author García, Alfonso N. text Zootaxa 2010 2335 49 58 journal article 10.5281/zenodo.193164 8727b401-83d5-414a-9065-ddd0e5e8365b 1175-5326 193164 Key to the subgroups of the Lachesilla andra species group (males only) 1 Claspers well developed and not fused to body of hypandrium but separated from it by a distinct line or attached to it at their base by membrane (see García Aldrete, 1974 , Fig. 7 ). Phallosome a single stem forked posteriorly, each tine bilobed or trilobed at its apex................................................................................................................. Subgroup I -. Claspers, when present, completely fused to body of hypandrium with no line of separation; claspers often greatly reduced or absent (see Fig. 6 and García Aldrete, 2000 , Figs. 3, 10 ). Phallosome not as above; if a single stem forked posteriorly, then each tine terminating in a spearhead-like structure; otherwise, phallosome either two rods fused only at base, or two separate rods ................................................................................................................................. 2 2 Phallosome a single stem forked in posterior half; each tine terminating in a spearhead-like structure..... Subgroup II -. Phallosome of two separate rods, or the two rods fused only at base........................................................................... 3 3 Hypandrium extended posteriorly as two lateral lobes ( Fig. 6 ); claspers either absent or represented (?) by a small process on or near the tip of each lateral hypandrial lobe.......................................................................... Subgroup III -. Hypandrium terminating as two rounded lobes not extending posterior to hypandrial midpoint; claspers represented by a pair of diagonal lines across hypandrium, converging at posterior hypandrial midpoint and a small cone or spike-like projection at their point of convergence.................................................................................... Subgroup IV