Adelomyrmex quetzal Longino

Longino, John T., 2012, A review of the ant genus Adelomyrmex Emery 1897 (Hymenoptera, Formicidae) in Central America, Zootaxa 3456, pp. 1-35 : 28-30

Adelomyrmex quetzal Longino , sp. nov.

( Figs 20 , 21 )

Type material. Holotype worker. Guatemala, Baja Verapaz: Biotopo Quetzal , 15.21224 −90.21421 ± 50 m, 1750 m, 7 May 2009 ( LLAMA Wa-B- 02-1-39) [ CAS, unique specimen identifier CASENT 0614520]. Paratypes (workers): Guatemala, Baja Verapaz: 4.5km S Purulha, 15.226 −90.2 ± 10 km, 1630 m, 21 May 1991 (R. S. Anderson 91-006) [ ICN, CASENT 0604444], [ INBIO, CASENT 0604450], [ UCD, CASENT 0604453], [ UNAM, CASENT 0604443]; same data but 24 May 1991 (R. S. Anderson 91-019) [ LACM, CASENT 0603653], [ UVGC, CASENT 0603652]; 7.5km S Purulha, 15.2 −90.2 ± 12 km, 1630 m, 26 May 1991 (R. S. Anderson 91-026) [ BMNH, CASENT 0601496], [ EAPZ, CASENT 0601501], [ECOSCE, CASENT 0601495], [ MCZC, CASENT 0627819], [ MZSP, CASENT 0627816], [ USNM, CASENT 0627815].

Geographic range. Guatemala.

Diagnosis. Mandible lacking differentiated basal and masticatory margins; counting from apex, fifth tooth closer to sixth (basal) tooth than to fourth tooth; scape lacking long erect setae projecting above underlying pubescence; gaster dark red brown, concolorous with rest of body (gaster contrastingly yellow in the similar A. mackayi ); metanotal groove not impressed (impressed in A. mackayi ).

Description. Worker. HW 0.67–0.71 (n=6); mandible without differentiated masticatory and basal margins, with six distinct teeth distributed from apex to base, fifth tooth closer to sixth (basal) tooth than to fourth tooth, and with a deep notch between sixth tooth and basal condyle; dorsal surface of mandible with several coarse longitudinal striae and several large piligerous puncta; in full face view, lateral clypeal teeth project from beneath clypeal shelf; lateral clypeal teeth located on anterior (ventral) margin of clypeus and separate from transverse carina that forms clypeal shelf; hypostomal tooth absent; compound eye composed of 11–13 ommatidia; face fully sculptured with longitudinal rugae.

Short anterior face of pronotum well separated from dorsal face by an elevated transverse ruga; dorsal profile of promesonotum and propodeum forming a single arched convexity, metanotal groove not impressed; propodeal spines pronounced, acute; space between propodeal spines a broad concavity without distinct dorsal and posterior faces, smooth and shiny with a few transverse rugae; rest of mesosoma with strong, linear, longitudinal rugae; petiolar and postpetiolar nodes subquadrate with differentiated anterior, dorsal, and posterior faces; petiole and postpetiole coarsely irregularly rugose laterally, transversely rugose dorsally; postpetiole in dorsal view about as long as wide to slightly longer than wide, with straight anterior margin and evenly rounded posterior margin; gastral dorsum smooth and shining.

Scape with abundant long subdecumbent pubescence; clypeus and frontal carinae with long erect setae; posterior and posterolateral margins of head with long erect setae; mid and hind tibia with abundant long subdecumbent setae and 2–3 differentiated erect setae that are longer than width of tibia; in profile, dorsal surfaces of head, mesosoma, and gaster with relatively sparse, long, erect setae; FSH about 0.08, FSI 0.11.

Color dark red brown.

Biology. This species occurs in cloud forest, from 1550–1750 m elevation. It is known from ten different Winkler samples of sifted litter, from two regions of Guatemala.

Etymology. Referring to the type locality.

Figures

FIGURE 20. Adelomyrmex quetzal sp. nov., holotype (Guatemala, CASENT 0614520). Scale bars are 0.5 mm for face and dorsal views, 1.0 mm for lateral view.

FIGURE 21. Distribution of material examined in this study: Adelomyrmex anxiocalor sp. nov., A. betoi, A. bispeculum sp. nov., A. brenesi, A. laevigatus, A. mackayi, A. marginodus sp. nov., A. metzabok sp. nov., A. micans, A. microps, A. minimus, A. paratristani sp. nov., A. quetzal sp. nov., A. tristani.