Lasiochilus Reuter 1871
Creators: name: Carpintero, Diego Leonardo
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Anthocoridae
Lasiochilus

description: Lasiochilus Reuter, 1871
Lasiochilus Reuter, 1871: 562. Type-species by monotypy: Lasiochilus pallidulus Reuter, 1871.
DESCRIPTION: Male: medium-sized species, oblong-oval, not flattened dorso-ventrally. Head: antennal segment II 2.5x the length of I, with sparse pilosity, segment I and II with setae of length not larger than twice the width of segment; labium shorter (subgenus Semiotoscelis) reaching middle of mesosternum or longer (subgenus Lasiochilus) reaching midcoxae; segment I very short, not reaching base of antennal segment I. Thorax: Pronotum smooth, laterally not carinate (excepting in duckei), slightly elevated calli; collar present, lateral margin not sinuate. Midfovea present; longitudinal median sulcus absent. Scutellum punctured. Hemelytra straight, deeply punctured on clavus and endocorion; from each of these punctures emerges a seta. Membrane pruinose. Cuneus smooth. Ostiolar peritreme short and slightly curved towards the back (Figs. 15–16); forefemora enlarged, unarmed. Foretibiae with row of teeth. Foretrochanters, sometimes also forecoxae, with row of tooth-like spines on their inner margin, probably having a stridulatory function. Metasternum elongate with thick prominence. Abdomen: Characteristic row of transversal punctures on urosternites. Genitalia with left paramere long, curved with apex acute. Right paramere absent. Grouping of copulatory spines on apical left margin of sixth sternite, apically rounded, toothlike.
Female: Similar to male in measurements and coloration; forelegs more slender and unarmed. Genitalia: most of species with parietovaginal gland (inapparent in L. duckei). Central punctures on seventh sternite present in some species.
DISTRIBUTION: This genus is distributed from southern United States to central Argentina (Buenos Aires).
DISCUSSION: Many Old and New World species were described in this genus. Author considers (see discussion on Dilasia) that the group formed by L. pallidulus and its related species is restricted to five species (two of them new) separated from Dilasia, the most closely related genus, by having strong punctures with emerging setae on clavus and endocorion and by the shape of the sexual secondary structures on males. Considering the extreme diversity of Lasiochilinae, Reuter’s subgenus of Lasiochilus, Hapa is here synonymized with the nominotypical subgenus. The characteristic pterygodimorphism of Hapa, also present in the other new species of this genus, L. colpoides (female macropter and male brachypter) and in Dilasia neotropicalis and D. varicolor (with macropterous and brachypterous females), and L. pallidulus, Dilasia carvalhoi, Eusolenophora testaceoides and E. divisoides (with brachypterousy present in both sexes), means that this character is variable and present in other genera and not useful to grouping species. Semiotoscelis Reuter, 1884 is retained as subgenus of Lasiochilus and will be discussed in detail later in the publication.
Key to species of Lasiochilus
1. Large eyes; frons rather narrow, with two impressed arched lines. Labium reaching middle of mesosternum................................................................................... s.g. Semiotoscelis Reuter, 1884 ......... 2
- Smaller eyes, frons with no impressed and arched lines. Labium reaching midcoxae... s. g. Lasiochilus Reuter, 1871 ......... 3
2. Larger, more elongate species (2.75 mm); piceous.................................... L. (S.) curvicrus Reuter, 1884
- Smaller, broader species (1.5–2.2 mm); paler; obovate (Fig. 196)................................ L.(S.) duckei n. sp.
3. Brownish species; left paramere strongly curved inwards (90º) (Fig. 210)........................ L.(L.) colpoides n. sp.
- Testaceous to yellowish species; left paramere sligtly curved inwards............................................ 4
4. Left paramere shorter, wide, with external margin slightly angulated and tip acute (Fig. 216); interocular space wider (0.29 mm)................................................................. L.(L.) hirtellus Drake & Harris, 1926
- Left paramere longer, narrower, with external margin curved, and apical portion narrow (Fig. 228); interocular space narrower (0.26–0.27 mm).............................................................. L. (L.) pallidulus Reuter, 1871
description: Published as part of Carpintero, Diego Leonardo, 2014, Western Hemisphere Lasiochilinae (Hemiptera: Heteroptera: Anthocoridae) with comments on some extralimital species and some considerations on suprageneric relationships, pp. 1-87 in Zootaxa 3871 (1) on pages 50-52, DOI: 10.11646/zootaxa.3871.1.1, http://zenodo.org/record/4947859