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Species: Crematogaster monteverdensis   Longino, 2003 

Classification:
Download Data

Taxonomic History (provided by Barry Bolton, 2019)

Crematogaster monteverdensis Longino, 2003A PDF: 89 (w.q.) COSTA RICA. Neotropic. AntCat AntWiki HOL

Distribution:

  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Costa Rica
  Biogeographic regions (According to curated Bioregion/Taxon lists):
    Neotropical

Distribution Notes:

Costa Rica.

Biology:

Natural History:

Crematogaster monteverdensis inhabits moist forest areas in the Monteverde community area in the Cordillera de Tilar‡n and at a similar elevation on Cerro Cacao in the Cordillera de Guanacaste. I first encountered the species in Monteverde, where I observed workers and the small, dealate queens foraging together on the outside walls of a house. Subsequent collections were from nests in dead branches, either in recent treefalls or on the ground. These collections were generally located at pasture/forest edges. Nests were polygynous, with multiple dealate queens. Workers could be recruited to baits of mixed honey and solid vegetable oil. I have never seen alate queens, and one nest collection contained small apterous males similar to Wheeler's description of the males of atitlanica (Wheeler 1936, see sumichrasti).

Notes:

I identified monteverdensis specimens first as sumichrasti until I discovered the consistent differences in tibial pilosity and promesonotal profile. Crematogaster sumichrasti seems to have a microparapatric distribution with monteverdensis, because typical sumichrasti occur just downslope from Monteverde, at 700m elevation on the road down to the PanAmerican Highway.

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Longino, J. T., 2003, The Crematogaster (Hymenoptera, Formicidae, Myrmicinae) of Costa Rica., Zootaxa 151, pp. 1-150

Crematogaster monteverdensisHNS NEW SPECIES

Holotype worker

Costa Rica, Prov. Guanacaste, 3km N Santa Elena, 1500m , 10°20'N, 84°50'W, 26 Jun 1991 (Longino, collection code JTL2938) [INBC, specimen code JTLC000001403].

Paratypes

One dealate queen, same data as holotype [INBC, specimen code JTLC000001404]; GoogleMaps worker and queen, same data [BMNH, specimen code JTLC000001405]; GoogleMaps worker and queen, same data [LACM, specimen code JTLC000001406]; GoogleMaps worker and queen, same data [MCZC, specimen code JTLC000001407]; GoogleMaps worker and queen, same data [MHNG, specimen code JTLC000001408]; GoogleMaps worker and queen, same data [NHMB, specimen code JTLC000001409]; GoogleMaps worker and queen, same data [USNM, specimen code JTLC000001410]; GoogleMaps worker and queen, same data [UCDC, specimen code JTLC000001411] GoogleMaps.

Range

Costa Rica.

Description of worker

Differing from sumichrastiHNS in the following respects: tibiae with abundant suberect setae, but more uniform in length and none longer than maximum width of tibia ( sumichrastiHNS has one or more long macrosetae, subequal in length to twice maximum tibia width); pronotal dorsum with stronger longitudinal carinulae; dorsal and posterior faces of mesonotum meeting at an angle but angle less strongly produced, not tuberculate; dorsal pilosity generally shorter.

Measurements

Holotype: HL 0.702, HW 0.739, HC 0.685, SL 0.584, EL 0.192, WL 0.777, SPL 0.145, PTH 0.178, PTL 0.239, PTW 0.210, PPL 0.183, PPW 0.228, CI 105, OI 27, SI 83, PTHI 74, PTWI 88, PPI 125, SPI 19.

Other specimens: HL 0.726, 0.639, 0.718; HW 0.799, 0.686, 0.772; HC 0.732, 0.636, 0.699; SL 0.605, 0.554, 0.601; EL 0.199, 0.182, 0.208; A11L 0.248; A11W 0.135; A10L 0.114; A10W 0.119; A09L 0.076; A09W 0.093; A08L 0.057; A08W 0.074; WL 0.840, 0.719, 0.832; SPL 0.145, 0.134, 0.156; PTH 0.195, 0.184, 0.181; PTL 0.249, 0.222, 0.228; PTW 0.220, 0.206, 0.224; PPL 0.180, 0.151, 0.176; PPW 0.246, 0.220, 0.235; CI 110, 107, 108; OI 27, 28, 29; SI 83, 87, 84; PTHI 78, 83, 79; PTWI 88, 93, 98; PPI 137, 146, 134; SPI 17, 19, 19; ACI 0.24.

Queen

A normal queen (dorsal face of propodeum drops steeply from postscutellum and much of propodeum appears ventral to scutellum and postscutellum, Fig. 1) with general shape, sculpture, and pilosity characters of the worker; size characters as in Figures 4 and 5.

Etymology

This species is named after its type locality.

Biology

Crematogaster monteverdensisHNS inhabits moist forest areas in the Monteverde community area in the Cordillera de Tilarán and at a similar elevation on Cerro Cacao in the Cordillera de Guanacaste. I first encountered the species in Monteverde, where I observed workers and the small, dealate queens foraging together on the outside walls of a house. Subsequent collections were from nests in dead branches, either in recent treefalls or on the ground. These collections were generally located at pasture/forest edges. Nests were polygynous, with multiple dealate queens. Workers could be recruited to baits of mixed honey and solid vegetable oil. I have never seen alate queens, and one nest collection contained small apterous males similar to Wheeler's description of the males of atitlanica (WheelerHNS 1936, see under sumichrastiHNS).

Comments

The two closely related species monteverdensisHNS and sumichrastiHNS are uniquely characterized by the combination of yellow coloration, relatively long, upturned propodeal spines, and long flexuous posterolateral mesonotal setae that are subequal in length to humeral setae. The only difference is that Crematogaster sumichrastiHNS has one or two extremely long setae on the tibiae.

I identified monteverdensisHNS specimens first as sumichrastiHNS until I discovered the consistent differences in tibial pilosity and promesonotal profile. Crematogaster sumichrastiHNS seems to have a microparapatric distribution with monteverdensisHNS, because typical sumichrastiHNS occur just downslope from Monteverde, at 700m elevation on the road down to the PanAmerican Highway.

Specimen Habitat Summary

Found most commonly in these habitats: 1 times found in wet forest, 1 times found in moist forest edge.

Found most commonly in these microhabitats: 1 times Pasture/forest edge. Polygynous colony in dead stick., Crematogaster sumichrasti on side of Carlos and Liddys' house; workers and times 2030, 1 times Pasture edge near Estacion Mengo; in dead branch., 1 times Freshly cut canopy tree; nest in dead branch on ground, 1 times Cloud forest/moist forest patch on Pacific slope. Nest in internodes of recently, 1 times Cerro Pedregal. In dead branch., 1 times in house.

Collected most commonly using these methods: 1 times search.

Elevations: collected from 1100 - 1500 meters, 1440 meters average

Type specimens: Holotype monteverdensis: jtlc000001403; Paratype monteverdensis: jtlc000001404, jtlc000001406, jtlc000001407, jtlc000001408, jtlc000001409, jtlc000001410, jtlc000001411; paratype of Crematogaster monteverdensis: jtlc000001405



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