Desmopachria lloydi Miller and Wolfe, 2018

Miller, Kelly B. & Wolfe, G. William, 2018, Nine New Species in the Desmopachria nitida Species-Group of the Neotropical Genus Desmopachria Babington, 1841 (Coleoptera: Adephaga: Dytiscidae: Hydroporinae: Hyphydrini), The Coleopterists Bulletin 72 (1), pp. 97-112 : 105-106

Desmopachria lloydi Miller and Wolfe , new species

Zoobank.org/ urn:lsid:zoobank.org:act:38EE2BE0-8A32-4ADB-9F9F-F03B257A5449 ( Figs. 22–25 , 72 )

Type Locality. Bolivia, Beni, El Porvenir Station NE San Borja .

Diagnosis. This species has exceptional male genitalia ( Figs. 22–25 ). The male median lobe is broad laterally and deeply bifid with the lateral rami distinctly asymmetrical with each ramus irregularly curved and twisted ( Figs. 22, 23 ). The lateral lobes are bilaterally symmetrical with each lobe bifid ( Figs. 24, 25 ). The dorsal ramus is abruptly curved dorsad, and the ventral ramus is evenly curved ventrad ( Fig. 24 ). This species is pale with the head and pronotum evenly yellow and the elytron evenly brown. The broad, asymmetrical, highly modified male median lobe is completely unique within the D. nitida speciesgroup.

Description. Measurements: TL = 1.7–1.8 mm, GW = 1.1–1.2 mm, HW = 0.6–0.7 mm, EW = 0.3 mm, TL/GW = 1.5, HW/EW = 2.1. Coloration: Head and pronotum evenly yellow. Elytron evenly brown. Head appendages, legs, and ventral surfaces yellow, darker on metacoxae and abdomen. Male genitalia: Male median lobe highly irregular and asymmetrical. In ventral aspect very broad, asymmetrical, deeply bifid with each ramus elongate, irregularly modified ( Figs. 22, 23 ). Lateral lobe in lateral aspect broad medially, apically bifid, ventral ramus short, curved ventrad, dorsal ramus short, abruptly curved dorsad ( Fig. 24 ); in ventral aspect broad, apical rami short and divergent ( Fig. 25 ).

Variation. Most of the specimens examined are teneral, and there is variation in intensity of the coloration of surfaces.

Etymology. This species is named lloydi in honor of Dr. Michael S. Lloyd, MD.

Distribution. The species is known only from the type locality in northern lowland Bolivia ( Fig. 72 ).

Habitat. Specimens were collected at lights.

Type Material. Holotype in KUNHM, male labeled, “ BOLIVIA: El Beni El Porvenir Stn. NE of San Borja 6-9 August 1988 / BIOLAT SI/MAB Robert W. Brooks ex., at lights/ HOLOTYPE Desmopachria lloydi Miller and Wolfe, 2017 [red label with black line border].” Paratypes: Five labeled same as holotype except each with “… PARATYPE Desmopachria lloydi Miller and Wolfe, 2017 [blue label with black line border];” two labeled, “ BOLIVIA: El Beni Beni Stn., Palm Camp , NE of San Borja, 31 July 1988 / Robert W. Brooks ex., at lights BIOLAT-SI/MAB/…” and paratype label as above .

Figures

Figs. 1–32. Male genitalia of Desmopachria species in the D. nitida species-group. D. curseenae: Median lobe – 1) Right lateral aspect; 2) Ventral aspect; Right lateral lobe – 3) Right lateral aspect; 4) Ventral aspect. D. delongi: Median lobe – 5) Right lateral aspect; 6) Ventral aspect; Right lateral lobe – 7) Right lateral aspect; 8) Ventral aspect. D. gingerae: Median lobe – 9) Right lateral aspect; 10) Ventral aspect; 11) Right lateral lobe, right lateral aspect. D. gyrationi: Median lobe – 12) Right lateral aspect; 13) Ventral aspect; 14) Right lateral lobe, right lateral aspect. D. hardyae: Median lobe – 15) Right lateral aspect; 16) Ventral aspect; 17) Right lateral lobe, right lateral aspect. D. kemptonae: Median lobe – 18) Right lateral aspect; 19) Ventral aspect; Right lateral lobe – 20) Right lateral aspect; 21) Ventral aspect. D. lloydi: 22) Median lobe, ventral aspect; 23) Apices of median lobe, anterior aspect; Right lateral lobe – 24) Right lateral aspect; 25) Ventral aspect. D. singhae: Median lobe – 26) Right lateral aspect; 27) Ventral aspect; 28) Right lateral lobe, right lateral aspect. D. vohrae: Median lobe – 29) Right lateral aspect; 30) Ventral aspect; Right lateral lobe – 31) Right lateral aspect; 32) Ventral aspect.

Figs. 71–72. Distribution of Desmopachria species in the D. nitida species-group. 71) D. curseenae, D. singhae, and D. vohrae; 72) D. lloydi.